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* [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file
@ 2024-10-14 15:02 syzbot
  2024-10-15  8:44 ` Lorenzo Stoakes
  2024-10-15 20:05 ` Liam R. Howlett
  0 siblings, 2 replies; 9+ messages in thread
From: syzbot @ 2024-10-14 15:02 UTC (permalink / raw)
  To: Liam.Howlett, akpm, linux-input, linux-kernel, linux-mm,
	linux-usb, lorenzo.stoakes, syzkaller-bugs, vbabka

Hello,

syzbot found the following issue on:

HEAD commit:    4a9fe2a8ac53 dt-bindings: usb: dwc3-imx8mp: add compatible..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
console output: https://syzkaller.appspot.com/x/log.txt?x=13425040580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=4510af5d637450fb
dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17336fd0580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/883c5319cb52/disk-4a9fe2a8.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/caf4421ed2ef/vmlinux-4a9fe2a8.xz
kernel image: https://storage.googleapis.com/syzbot-assets/d8e3beb01d49/bzImage-4a9fe2a8.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ce483fd06e2061f44f5d@syzkaller.appspotmail.com

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 1-...D } 2645 jiffies s: 2181 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 13390 Comm: modprobe Not tainted 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:407
Code: 6d b5 fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 38 eb 0d ff eb a2 e8 c1 eb
RSP: 0018:ffffc900001b7f08 EFLAGS: 00000002
RAX: dffffc0000000060 RBX: 00000000000003fd RCX: 0000000000000000
RDX: 00000000000003fd RSI: ffffffff82a07780 RDI: ffffffff936356a0
RBP: ffffffff93635660 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000020 R14: fffffbfff26c6b26 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f62d4710409 CR3: 000000011ced8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 serial_in drivers/tty/serial/8250/8250.h:137 [inline]
 serial_lsr_in drivers/tty/serial/8250/8250.h:159 [inline]
 wait_for_lsr+0xda/0x180 drivers/tty/serial/8250/8250_port.c:2068
 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline]
 serial8250_console_write+0xf5a/0x17c0 drivers/tty/serial/8250/8250_port.c:3393
 console_emit_next_record kernel/printk/printk.c:3092 [inline]
 console_flush_all+0x800/0xc60 kernel/printk/printk.c:3180
 __console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
 _printk+0xc8/0x100 kernel/printk/printk.c:2432
 printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
 show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285
 sched_show_task kernel/sched/core.c:7582 [inline]
 sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7557
 show_state_filter+0xee/0x320 kernel/sched/core.c:7627
 k_spec drivers/tty/vt/keyboard.c:667 [inline]
 k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
 kbd_keycode drivers/tty/vt/keyboard.c:1522 [inline]
 kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541
 input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2549
 input_pass_values+0x777/0x8e0 drivers/input/input.c:126
 input_event_dispose drivers/input/input.c:352 [inline]
 input_handle_event+0xb30/0x14d0 drivers/input/input.c:369
 input_event drivers/input/input.c:398 [inline]
 input_event+0x83/0xa0 drivers/input/input.c:390
 hidinput_hid_event+0xa12/0x2410 drivers/hid/hid-input.c:1719
 hid_process_event+0x4b7/0x5e0 drivers/hid/hid-core.c:1540
 hid_input_array_field+0x535/0x710 drivers/hid/hid-core.c:1652
 hid_process_report drivers/hid/hid-core.c:1694 [inline]
 hid_report_raw_event+0xa02/0x11c0 drivers/hid/hid-core.c:2040
 __hid_input_report.constprop.0+0x341/0x440 drivers/hid/hid-core.c:2110
 hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285
 __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
 dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1988
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
 handle_softirqs+0x206/0x8d0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1037
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:122 [inline]
RIP: 0010:lock_is_held_type+0x35/0x150 kernel/locking/lockdep.c:5890
Code: bd ff ff ff ff 41 54 55 53 48 83 ec 08 8b 0d ea d3 67 03 85 c9 0f 84 dd 00 00 00 65 8b 05 2b 0c 14 79 85 c0 0f 85 ce 00 00 00 <65> 4c 8b 25 93 46 15 79 41 8b 94 24 94 0a 00 00 85 d2 0f 85 b6 00
RSP: 0018:ffffc90003d0f840 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff920007a1f12 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff88ebb040
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8727e760
R13: 00000000ffffffff R14: ffffc90003d0fab8 R15: 00007fe8bee64000
 lock_is_held include/linux/lockdep.h:249 [inline]
 __might_resched+0x4ca/0x5e0 kernel/sched/core.c:8593
 down_write+0x6f/0x200 kernel/locking/rwsem.c:1576
 i_mmap_lock_write include/linux/fs.h:507 [inline]
 vma_link_file+0x7b/0x120 mm/vma.c:1582
 mmap_region+0x16ec/0x2900 mm/mmap.c:1515
 do_mmap+0xc00/0xfc0 mm/mmap.c:496
 vm_mmap_pgoff+0x1ba/0x350 mm/util.c:588
 ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe8bf117b74
Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f
RSP: 002b:00007ffde3a3dad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffde3a3db50 RCX: 00007fe8bf117b74
RDX: 0000000000000001 RSI: 0000000000007000 RDI: 00007fe8bee64000
RBP: 00007ffde3a3deb0 R08: 0000000000000000 R09: 000000000001b000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007fe8bf0f4fc0
R13: 00007ffde3a3df38 R14: 000000000001a43e R15: 0000000000000000
 </TASK>
 </TASK>
task:kworker/u8:7    state:R  running task     stack:32568 pid:14340 tgid:14340 ppid:3242   flags:0x00004000
Call Trace:
 <TASK>
 __switch_to_asm+0x70/0x70
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14342 tgid:14342 ppid:2678   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2bc08caa90
RSP: 002b:00007ffd5b9ec338 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f2bc09bb860 RCX: 00007f2bc08caa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f2bc09bb860 R08: 0000000000000001 R09: 41db0d9426285180
R10: 00007ffd5b9ec1f0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2bc09bf658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14346 tgid:14346 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:kworker/u8:6    state:R  running task     stack:28784 pid:14347 tgid:14347 ppid:1131   flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:kworker/u8:3    state:R  running task     stack:32568 pid:14354 tgid:14354 ppid:46     flags:0x00004000
Call Trace:
 <TASK>
 __switch_to_asm+0x70/0x70
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14355 tgid:14355 ppid:1131   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5de21e6a90
RSP: 002b:00007fff1611ff28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f5de22d7860 RCX: 00007f5de21e6a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f5de22d7860 R08: 0000000000000001 R09: 46780758b7766d57
R10: 00007fff1611fde0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5de22db658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14359 tgid:14359 ppid:1131   flags:0x00000000
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14366 tgid:14366 ppid:2678   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:modprobe        state:R  running task     stack:25136 pid:14373 tgid:14373 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa2dfe27a90
RSP: 002b:00007ffd872a30e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fa2dff18860 RCX: 00007fa2dfe27a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fa2dff18860 R08: 0000000000000001 R09: 5f652800365ccb43
R10: 00007ffd872a2fa0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa2dff1c658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25136 pid:14379 tgid:14379 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14384 tgid:14384 ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14387 tgid:14387 ppid:46     flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14393 tgid:14393 ppid:2678   flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14398 tgid:14398 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14401 tgid:14401 ppid:3242   flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14410 tgid:14410 ppid:3242   flags:0x00000000
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14421 tgid:14421 ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:23984 pid:14430 tgid:14430 ppid:46     flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f622cd7da90
RSP: 002b:00007ffd1393cf78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f622ce6e860 RCX: 00007f622cd7da90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f622ce6e860 R08: 0000000000000001 R09: dfc6ef523a5d942e
R10: 00007ffd1393ce30 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f622ce72658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14435 tgid:14435 ppid:3242   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd05f2dca90
RSP: 002b:00007ffdd773bdf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fd05f3cd860 RCX: 00007fd05f2dca90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fd05f3cd860 R08: 0000000000000001 R09: 4535f641cc4c0f28
R10: 00007ffdd773bcb0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fd05f3d1658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14440 tgid:14440 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe7ecd82a90
RSP: 002b:00007ffcc7a7bf68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fe7ece73860 RCX: 00007fe7ecd82a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fe7ece73860 R08: 0000000000000001 R09: 2fdb21dbc668df0d
R10: 00007ffcc7a7be20 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fe7ece77658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14446 tgid:14446 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14448 tgid:14448 ppid:46     flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7d319bfa90
RSP: 002b:00007ffe4a0e5cd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f7d31ab0860 RCX: 00007f7d319bfa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f7d31ab0860 R08: 0000000000000001 R09: df5d5dca07fffb84
R10: 00007ffe4a0e5b90 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f7d31ab4658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14453 tgid:14453 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff382b23a90
RSP: 002b:00007fffced1e578 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007ff382c14860 RCX: 00007ff382b23a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007ff382c14860 R08: 0000000000000001 R09: 48767732b8a00d20
R10: 00007fffced1e430 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ff382c18658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:23984 pid:14458 tgid:14458 ppid:1131   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6854
 __cond_resched+0x1b/0x30 kernel/sched/core.c:7192
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14462 tgid:14462 ppid:1131   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:modprobe        state:R  running task     stack:24416 pid:14466 tgid:14466 ppid:46     flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa2b9c04a90
RSP: 002b:00007ffcac65ac18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fa2b9cf5860 RCX: 00007fa2b9c04a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fa2b9cf5860 R08: 0000000000000001 R09: 44ac5dd007bc47d9
R10: 00007ffcac65aad0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa2b9cf9658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14472 tgid:14472 ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14475 tgid:14475 ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14482 tgid:14482 ppid:2678   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f564677ca90
RSP: 002b:00007ffea046cdf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f564686d860 RCX: 00007f564677ca90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f564686d860 R08: 0000000000000001 R09: 93e6ddf45d0859c7
R10: 00007ffea046ccb0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5646871658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14488 tgid:14488 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14497 tgid:14497 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14504 tgid:14504 ppid:3242   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe9ec399a90
RSP: 002b:00007ffee4562488 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fe9ec48a860 RCX: 00007fe9ec399a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fe9ec48a860 R08: 0000000000000001 R09: 0fccf8818db050ca
R10: 00007ffee4562340 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fe9ec48e658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25136 pid:14509 tgid:14509 ppid:1131   flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14512 tgid:14512 ppid:3242   flags:0x00000000
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14515 tgid:14515 ppid:1131   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14516 tgid:14516 ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcaccae7a90
RSP: 002b:00007fff73141d48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fcaccbd8860 RCX: 00007fcaccae7a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fcaccbd8860 R08: 0000000000000001 R09: a45b974d1de31a4f
R10: 00007fff73141c00 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fcaccbdc658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14521 tgid:14521 ppid:46     flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4322dd7a90
RSP: 002b:00007fffc607e378 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f4322ec8860 RCX: 00007f4322dd7a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f4322ec8860 R08: 0000000000000001 R09: 5c992bf7597daffb
R10: 00007fffc607e230 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f4322ecc658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:24416 pid:14526 tgid:14526 ppid:1131   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f638696fa90
RSP: 002b:00007ffe0066ce18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f6386a60860 RCX: 00007f638696fa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f6386a60860 R08: 0000000000000001 R09: c9a8bb5340cb61d8
R10: 00007ffe0066ccd0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f6386a64658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:24416 pid:14532 tgid:14532 ppid:1131   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14540 tgid:14540 ppid:3242   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3a9b2d4a90
RSP: 002b:00007ffe77381b78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f3a9b3c5860 RCX: 00007f3a9b2d4a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f3a9b3c5860 R08: 0000000000000001 R09: 755e1725d4f4842a
R10: 00007ffe77381a30 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f3a9b3c9658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14545 tgid:14545 ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f560707fa90
RSP: 002b:00007ffe65145b28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f5607170860 RCX: 00007f560707fa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f5607170860 R08: 0000000000000001 R09: b546563a3277b2da
R10: 00007ffe651459e0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5607174658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14550 tgid:14550 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14558 tgid:14558 ppid:3242   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14564 tgid:14564 ppid:3242   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 __pfx_lock_release+0x10/0x10 kernel/locking/lockdep.c:5346
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14569 tgid:14569 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:modprobe        state:R  running task     stack:23984 pid:14574 tgid:14574 ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14577 tgid:14577 ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14584 tgid:14584 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14585 tgid:14585 ppid:3242   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14587 tgid:14587 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14599 tgid:14599 ppid:1131   flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14602 tgid:14602 ppid:1131   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:modprobe        state:R  running task     stack:25136 pid:14607 tgid:14607 ppid:2678   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:modprobe        state:R  running task     stack:25136 pid:14612 tgid:14612 ppid:1131   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5193264a90
RSP: 002b:00007ffe01417e78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f5193355860 RCX: 00007f5193264a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f5193355860 R08: 0000000000000001 R09: 5005ebcf5767047b
R10: 00007ffe01417d30 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5193359658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14618 tgid:14618 ppid:1131   flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14621 tgid:14621 ppid:1131   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14629 tgid:14629 ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:24704 pid:14634 tgid:14634 ppid:3242   flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25408 pid:14636 tgid:14636 ppid:1131   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8d8d1ffa90
RSP: 002b:00007ffe30417e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f8d8d2f0860 RCX: 00007f8d8d1ffa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f8d8d2f0860 R08: 0000000000000001 R09: 44dca94248773cd7
R10: 00007ffe30417d00 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f8d8d2f4658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25136 pid:14642 tgid:14642 ppid:3242   flags:0x00000002
Call Trace:
 <TASK>


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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If the report is already addressed, let syzbot know by replying with:
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#syz test: git://repo/address.git branch-or-commit-hash
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^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file
  2024-10-14 15:02 [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file syzbot
@ 2024-10-15  8:44 ` Lorenzo Stoakes
  2024-10-15 10:32   ` syzbot
  2024-10-15 20:05 ` Liam R. Howlett
  1 sibling, 1 reply; 9+ messages in thread
From: Lorenzo Stoakes @ 2024-10-15  8:44 UTC (permalink / raw)
  To: syzbot
  Cc: Liam.Howlett, akpm, linux-input, linux-kernel, linux-mm,
	linux-usb, syzkaller-bugs, vbabka

On Mon, Oct 14, 2024 at 08:02:26AM -0700, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit:    4a9fe2a8ac53 dt-bindings: usb: dwc3-imx8mp: add compatible..

Strange that this hit in the USB tree.

It's possible this is another variant of the problems introduced by the
maple tree bug fixed in [0] as this has been seen to result in hanged
processes due to memory corruption.

This is sitting in the unstable hotfixes branch in mm so not yet in an rc,
so it is possible. The issue is that it manifests in potentially
unpredictable ways so it may be this or it may not.

In any case the vma_link_file() stall seems likely to be due to contended
lock, and since we are pulling the address_space against which we take that
lock from a vma, which could be a UAF due to the bug, this seems plausible.

On the other hand, I notice that CONFIG_DEBUG_VM_MAPLE_TREE is enabled here
which causes very expensive validation (not in vma_link_file() but
elsewhere) which can cause RCU stalls.

[0]:https://lore.kernel.org/linux-mm/48b349a2a0f7c76e18772712d0997a5e12ab0a3b.1728314403.git.lorenzo.stoakes@oracle.com/

Either way, it's probably worth retrying on a repo with this fix so...

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable

> git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
> console output: https://syzkaller.appspot.com/x/log.txt?x=13425040580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=4510af5d637450fb
> dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
> compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17336fd0580000
>
> downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/883c5319cb52/disk-4a9fe2a8.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/caf4421ed2ef/vmlinux-4a9fe2a8.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/d8e3beb01d49/bzImage-4a9fe2a8.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+ce483fd06e2061f44f5d@syzkaller.appspotmail.com
>
> rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
>  1-...D } 2645 jiffies s: 2181 root: 0x2/.
> rcu: blocking rcu_node structures (internal RCU debug):
>
> Sending NMI from CPU 0 to CPUs 1:
> NMI backtrace for cpu 1
> CPU: 1 UID: 0 PID: 13390 Comm: modprobe Not tainted 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
> RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:407
> Code: 6d b5 fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 38 eb 0d ff eb a2 e8 c1 eb
> RSP: 0018:ffffc900001b7f08 EFLAGS: 00000002
> RAX: dffffc0000000060 RBX: 00000000000003fd RCX: 0000000000000000
> RDX: 00000000000003fd RSI: ffffffff82a07780 RDI: ffffffff936356a0
> RBP: ffffffff93635660 R08: 0000000000000001 R09: 000000000000001f
> R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
> R13: 0000000000000020 R14: fffffbfff26c6b26 R15: dffffc0000000000
> FS:  0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007f62d4710409 CR3: 000000011ced8000 CR4: 00000000003506f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
>  <NMI>
>  </NMI>
>  <IRQ>
>  serial_in drivers/tty/serial/8250/8250.h:137 [inline]
>  serial_lsr_in drivers/tty/serial/8250/8250.h:159 [inline]
>  wait_for_lsr+0xda/0x180 drivers/tty/serial/8250/8250_port.c:2068
>  serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline]
>  serial8250_console_write+0xf5a/0x17c0 drivers/tty/serial/8250/8250_port.c:3393
>  console_emit_next_record kernel/printk/printk.c:3092 [inline]
>  console_flush_all+0x800/0xc60 kernel/printk/printk.c:3180
>  __console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
>  console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
>  vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
>  vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
>  _printk+0xc8/0x100 kernel/printk/printk.c:2432
>  printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
>  show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285
>  sched_show_task kernel/sched/core.c:7582 [inline]
>  sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7557
>  show_state_filter+0xee/0x320 kernel/sched/core.c:7627
>  k_spec drivers/tty/vt/keyboard.c:667 [inline]
>  k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
>  kbd_keycode drivers/tty/vt/keyboard.c:1522 [inline]
>  kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541
>  input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2549
>  input_pass_values+0x777/0x8e0 drivers/input/input.c:126
>  input_event_dispose drivers/input/input.c:352 [inline]
>  input_handle_event+0xb30/0x14d0 drivers/input/input.c:369
>  input_event drivers/input/input.c:398 [inline]
>  input_event+0x83/0xa0 drivers/input/input.c:390
>  hidinput_hid_event+0xa12/0x2410 drivers/hid/hid-input.c:1719
>  hid_process_event+0x4b7/0x5e0 drivers/hid/hid-core.c:1540
>  hid_input_array_field+0x535/0x710 drivers/hid/hid-core.c:1652
>  hid_process_report drivers/hid/hid-core.c:1694 [inline]
>  hid_report_raw_event+0xa02/0x11c0 drivers/hid/hid-core.c:2040
>  __hid_input_report.constprop.0+0x341/0x440 drivers/hid/hid-core.c:2110
>  hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285
>  __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
>  usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
>  dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1988
>  __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
>  __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755
>  hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
>  handle_softirqs+0x206/0x8d0 kernel/softirq.c:554
>  __do_softirq kernel/softirq.c:588 [inline]
>  invoke_softirq kernel/softirq.c:428 [inline]
>  __irq_exit_rcu kernel/softirq.c:637 [inline]
>  irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
>  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
>  sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1037
>  </IRQ>
>  <TASK>
>  asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
> RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
> RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:122 [inline]
> RIP: 0010:lock_is_held_type+0x35/0x150 kernel/locking/lockdep.c:5890
> Code: bd ff ff ff ff 41 54 55 53 48 83 ec 08 8b 0d ea d3 67 03 85 c9 0f 84 dd 00 00 00 65 8b 05 2b 0c 14 79 85 c0 0f 85 ce 00 00 00 <65> 4c 8b 25 93 46 15 79 41 8b 94 24 94 0a 00 00 85 d2 0f 85 b6 00
> RSP: 0018:ffffc90003d0f840 EFLAGS: 00000246
> RAX: 0000000000000000 RBX: 1ffff920007a1f12 RCX: 0000000000000001
> RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff88ebb040
> RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8727e760
> R13: 00000000ffffffff R14: ffffc90003d0fab8 R15: 00007fe8bee64000
>  lock_is_held include/linux/lockdep.h:249 [inline]
>  __might_resched+0x4ca/0x5e0 kernel/sched/core.c:8593
>  down_write+0x6f/0x200 kernel/locking/rwsem.c:1576
>  i_mmap_lock_write include/linux/fs.h:507 [inline]
>  vma_link_file+0x7b/0x120 mm/vma.c:1582
>  mmap_region+0x16ec/0x2900 mm/mmap.c:1515
>  do_mmap+0xc00/0xfc0 mm/mmap.c:496
>  vm_mmap_pgoff+0x1ba/0x350 mm/util.c:588
>  ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542
>  __do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
>  __se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline]
>  __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fe8bf117b74
> Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f
> RSP: 002b:00007ffde3a3dad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
> RAX: ffffffffffffffda RBX: 00007ffde3a3db50 RCX: 00007fe8bf117b74
> RDX: 0000000000000001 RSI: 0000000000007000 RDI: 00007fe8bee64000
> RBP: 00007ffde3a3deb0 R08: 0000000000000000 R09: 000000000001b000
> R10: 0000000000000812 R11: 0000000000000246 R12: 00007fe8bf0f4fc0
> R13: 00007ffde3a3df38 R14: 000000000001a43e R15: 0000000000000000
>  </TASK>
>  </TASK>
> task:kworker/u8:7    state:R  running task     stack:32568 pid:14340 tgid:14340 ppid:3242   flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14342 tgid:14342 ppid:2678   flags:0x00004002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f2bc08caa90
> RSP: 002b:00007ffd5b9ec338 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f2bc09bb860 RCX: 00007f2bc08caa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f2bc09bb860 R08: 0000000000000001 R09: 41db0d9426285180
> R10: 00007ffd5b9ec1f0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f2bc09bf658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14346 tgid:14346 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:kworker/u8:6    state:R  running task     stack:28784 pid:14347 tgid:14347 ppid:1131   flags:0x00004000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:kworker/u8:3    state:R  running task     stack:32568 pid:14354 tgid:14354 ppid:46     flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14355 tgid:14355 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f5de21e6a90
> RSP: 002b:00007fff1611ff28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f5de22d7860 RCX: 00007f5de21e6a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f5de22d7860 R08: 0000000000000001 R09: 46780758b7766d57
> R10: 00007fff1611fde0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f5de22db658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14359 tgid:14359 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14366 tgid:14366 ppid:2678   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14373 tgid:14373 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fa2dfe27a90
> RSP: 002b:00007ffd872a30e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fa2dff18860 RCX: 00007fa2dfe27a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fa2dff18860 R08: 0000000000000001 R09: 5f652800365ccb43
> R10: 00007ffd872a2fa0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fa2dff1c658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14379 tgid:14379 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14384 tgid:14384 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14387 tgid:14387 ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14393 tgid:14393 ppid:2678   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14398 tgid:14398 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14401 tgid:14401 ppid:3242   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14410 tgid:14410 ppid:3242   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14421 tgid:14421 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:23984 pid:14430 tgid:14430 ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f622cd7da90
> RSP: 002b:00007ffd1393cf78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f622ce6e860 RCX: 00007f622cd7da90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f622ce6e860 R08: 0000000000000001 R09: dfc6ef523a5d942e
> R10: 00007ffd1393ce30 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f622ce72658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14435 tgid:14435 ppid:3242   flags:0x00004002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fd05f2dca90
> RSP: 002b:00007ffdd773bdf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fd05f3cd860 RCX: 00007fd05f2dca90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fd05f3cd860 R08: 0000000000000001 R09: 4535f641cc4c0f28
> R10: 00007ffdd773bcb0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fd05f3d1658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14440 tgid:14440 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fe7ecd82a90
> RSP: 002b:00007ffcc7a7bf68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fe7ece73860 RCX: 00007fe7ecd82a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fe7ece73860 R08: 0000000000000001 R09: 2fdb21dbc668df0d
> R10: 00007ffcc7a7be20 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fe7ece77658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14446 tgid:14446 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14448 tgid:14448 ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f7d319bfa90
> RSP: 002b:00007ffe4a0e5cd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f7d31ab0860 RCX: 00007f7d319bfa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f7d31ab0860 R08: 0000000000000001 R09: df5d5dca07fffb84
> R10: 00007ffe4a0e5b90 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f7d31ab4658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14453 tgid:14453 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7ff382b23a90
> RSP: 002b:00007fffced1e578 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007ff382c14860 RCX: 00007ff382b23a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007ff382c14860 R08: 0000000000000001 R09: 48767732b8a00d20
> R10: 00007fffced1e430 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007ff382c18658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:23984 pid:14458 tgid:14458 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6854
>  __cond_resched+0x1b/0x30 kernel/sched/core.c:7192
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14462 tgid:14462 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:24416 pid:14466 tgid:14466 ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fa2b9c04a90
> RSP: 002b:00007ffcac65ac18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fa2b9cf5860 RCX: 00007fa2b9c04a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fa2b9cf5860 R08: 0000000000000001 R09: 44ac5dd007bc47d9
> R10: 00007ffcac65aad0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fa2b9cf9658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14472 tgid:14472 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14475 tgid:14475 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14482 tgid:14482 ppid:2678   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f564677ca90
> RSP: 002b:00007ffea046cdf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f564686d860 RCX: 00007f564677ca90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f564686d860 R08: 0000000000000001 R09: 93e6ddf45d0859c7
> R10: 00007ffea046ccb0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f5646871658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14488 tgid:14488 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14497 tgid:14497 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14504 tgid:14504 ppid:3242   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fe9ec399a90
> RSP: 002b:00007ffee4562488 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fe9ec48a860 RCX: 00007fe9ec399a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fe9ec48a860 R08: 0000000000000001 R09: 0fccf8818db050ca
> R10: 00007ffee4562340 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fe9ec48e658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14509 tgid:14509 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14512 tgid:14512 ppid:3242   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14515 tgid:14515 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14516 tgid:14516 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fcaccae7a90
> RSP: 002b:00007fff73141d48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fcaccbd8860 RCX: 00007fcaccae7a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fcaccbd8860 R08: 0000000000000001 R09: a45b974d1de31a4f
> R10: 00007fff73141c00 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fcaccbdc658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14521 tgid:14521 ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f4322dd7a90
> RSP: 002b:00007fffc607e378 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f4322ec8860 RCX: 00007f4322dd7a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f4322ec8860 R08: 0000000000000001 R09: 5c992bf7597daffb
> R10: 00007fffc607e230 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f4322ecc658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24416 pid:14526 tgid:14526 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f638696fa90
> RSP: 002b:00007ffe0066ce18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f6386a60860 RCX: 00007f638696fa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f6386a60860 R08: 0000000000000001 R09: c9a8bb5340cb61d8
> R10: 00007ffe0066ccd0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f6386a64658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24416 pid:14532 tgid:14532 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14540 tgid:14540 ppid:3242   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f3a9b2d4a90
> RSP: 002b:00007ffe77381b78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f3a9b3c5860 RCX: 00007f3a9b2d4a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f3a9b3c5860 R08: 0000000000000001 R09: 755e1725d4f4842a
> R10: 00007ffe77381a30 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f3a9b3c9658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14545 tgid:14545 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f560707fa90
> RSP: 002b:00007ffe65145b28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f5607170860 RCX: 00007f560707fa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f5607170860 R08: 0000000000000001 R09: b546563a3277b2da
> R10: 00007ffe651459e0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f5607174658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14550 tgid:14550 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14558 tgid:14558 ppid:3242   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14564 tgid:14564 ppid:3242   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __pfx_lock_release+0x10/0x10 kernel/locking/lockdep.c:5346
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14569 tgid:14569 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:23984 pid:14574 tgid:14574 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14577 tgid:14577 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14584 tgid:14584 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14585 tgid:14585 ppid:3242   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14587 tgid:14587 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14599 tgid:14599 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14602 tgid:14602 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14607 tgid:14607 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14612 tgid:14612 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f5193264a90
> RSP: 002b:00007ffe01417e78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f5193355860 RCX: 00007f5193264a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f5193355860 R08: 0000000000000001 R09: 5005ebcf5767047b
> R10: 00007ffe01417d30 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f5193359658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14618 tgid:14618 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14621 tgid:14621 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14629 tgid:14629 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14634 tgid:14634 ppid:3242   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14636 tgid:14636 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f8d8d1ffa90
> RSP: 002b:00007ffe30417e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f8d8d2f0860 RCX: 00007f8d8d1ffa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f8d8d2f0860 R08: 0000000000000001 R09: 44dca94248773cd7
> R10: 00007ffe30417d00 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f8d8d2f4658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14642 tgid:14642 ppid:3242   flags:0x00000002
> Call Trace:
>  <TASK>
>
>
> ---
> This report is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@googlegroups.com.
>
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
>
> If the report is already addressed, let syzbot know by replying with:
> #syz fix: exact-commit-title
>
> If you want syzbot to run the reproducer, reply with:
> #syz test: git://repo/address.git branch-or-commit-hash
> If you attach or paste a git patch, syzbot will apply it before testing.
>
> If you want to overwrite report's subsystems, reply with:
> #syz set subsystems: new-subsystem
> (See the list of subsystem names on the web dashboard)
>
> If the report is a duplicate of another one, reply with:
> #syz dup: exact-subject-of-another-report
>
> If you want to undo deduplication, reply with:
> #syz undup

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file
  2024-10-15  8:44 ` Lorenzo Stoakes
@ 2024-10-15 10:32   ` syzbot
  2024-10-15 10:43     ` Lorenzo Stoakes
  0 siblings, 1 reply; 9+ messages in thread
From: syzbot @ 2024-10-15 10:32 UTC (permalink / raw)
  To: akpm, liam.howlett, linux-input, linux-kernel, linux-mm,
	linux-usb, lorenzo.stoakes, syzkaller-bugs, vbabka

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
INFO: rcu detected stall in do_syscall_64

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2664 jiffies s: 1445 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 2532 Comm: acpid Not tainted 6.12.0-rc2-syzkaller-00039-g00c5e66c934c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:407
Code: 79 b5 fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 f8 f4 0d ff eb a2 e8 81 f5
RSP: 0018:ffffc900001b7f08 EFLAGS: 00000002
RAX: dffffc0000000060 RBX: 00000000000003fd RCX: 0000000000000000
RDX: 00000000000003fd RSI: ffffffff82a065b0 RDI: ffffffff93633660
RBP: ffffffff93633620 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000020 R14: fffffbfff26c671e R15: dffffc0000000000
FS:  00007fce9143b740(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ce5ffff CR3: 0000000115abe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 serial_in drivers/tty/serial/8250/8250.h:137 [inline]
 serial_lsr_in drivers/tty/serial/8250/8250.h:159 [inline]
 wait_for_lsr+0xda/0x180 drivers/tty/serial/8250/8250_port.c:2068
 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline]
 serial8250_console_write+0xf5a/0x17c0 drivers/tty/serial/8250/8250_port.c:3393
 console_emit_next_record kernel/printk/printk.c:3092 [inline]
 console_flush_all+0x800/0xc60 kernel/printk/printk.c:3180
 __console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
 _printk+0xc8/0x100 kernel/printk/printk.c:2432
 printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
 show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285
 sched_show_task kernel/sched/core.c:7582 [inline]
 sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7557
 show_state_filter+0xee/0x320 kernel/sched/core.c:7627
 k_spec drivers/tty/vt/keyboard.c:667 [inline]
 k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
 kbd_keycode drivers/tty/vt/keyboard.c:1522 [inline]
 kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541
 input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2549
 input_pass_values+0x777/0x8e0 drivers/input/input.c:126
 input_event_dispose drivers/input/input.c:352 [inline]
 input_handle_event+0xb30/0x14d0 drivers/input/input.c:369
 input_event drivers/input/input.c:398 [inline]
 input_event+0x83/0xa0 drivers/input/input.c:390
 hidinput_hid_event+0xa12/0x2410 drivers/hid/hid-input.c:1719
 hid_process_event+0x4b7/0x5e0 drivers/hid/hid-core.c:1540
 hid_input_array_field+0x535/0x710 drivers/hid/hid-core.c:1652
 hid_process_report drivers/hid/hid-core.c:1694 [inline]
 hid_report_raw_event+0xa02/0x11c0 drivers/hid/hid-core.c:2040
 __hid_input_report.constprop.0+0x341/0x440 drivers/hid/hid-core.c:2110
 hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285
 __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
 dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1988
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
 handle_softirqs+0x206/0x8d0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1037
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:do_syscall_x64 arch/x86/entry/common.c:51 [inline]
RIP: 0010:do_syscall_64+0xc0/0x250 arch/x86/entry/common.c:83
Code: c6 bf 15 79 48 8b 50 08 f6 c2 3f 0f 85 3c 01 00 00 90 90 41 81 fc ce 01 00 00 0f 87 43 01 00 00 41 81 fc cf 01 00 00 48 19 c0 <44> 89 e6 48 89 df 21 c6 e8 d3 4b 12 fa 48 89 43 50 90 48 89 df e8
RSP: 0018:ffffc9000182ff28 EFLAGS: 00000297
RAX: ffffffffffffffff RBX: ffffc9000182ff58 RCX: 1ffffffff14ac131
RDX: 0000000000000000 RSI: ffffffff8727f1c0 RDI: ffffffff8746eb40
RBP: ffffc9000182ff48 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8a56428f R11: 0000000000000000 R12: 000000000000000e
R13: 000000000000000e R14: 0000000000000000 R15: 0000000000000000
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fce914b1773
Code: 00 f3 a5 48 8d 74 24 88 48 b9 ff ff ff 7f fe ff ff ff 48 21 c8 48 89 44 24 88 41 ba 08 00 00 00 44 89 c7 b8 0e 00 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 06 41 89 c0 41 f7 d8 44 89 c0 5a c3 41
RSP: 002b:00007ffc56b7f150 EFLAGS: 00000246 ORIG_RAX: 000000000000000e
RAX: ffffffffffffffda RBX: 0000557975a80906 RCX: 00007fce914b1773
RDX: 0000000000000000 RSI: 0000557975a86480 RDI: 0000000000000000
RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffc56b7f258
R13: 0000557975a80178 R14: 0000000000000001 R15: 000000000000000a
 </TASK>
 </TASK>

Showing all locks held in the system:
7 locks held by kworker/0:1/9:
 #0: ffff8881066e5948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc9000009fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: ffff8881097a7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #2: ffff8881097a7190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
 #3: ffff888106ab5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #3: ffff888106ab5190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #4: ffff88812c375160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #4: ffff88812c375160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #5: ffff888119b1da20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #5: ffff888119b1da20 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #6: ffffffff89bd6b08 (input_mutex){+.+.}-{3:3}, at: input_register_device+0x98a/0x1110 drivers/input/input.c:2463
2 locks held by kworker/u8:4/54:
 #0: ffff888100089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc90000547d80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
2 locks held by kworker/u8:5/236:
 #0: ffff888100089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc9000163fd80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
7 locks held by kworker/0:2/679:
 #0: ffff8881066e5948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc90001c1fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: ffff88810977f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #2: ffff88810977f190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
 #3: ffff888105a8d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #3: ffff888105a8d190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #4: ffff88812c377160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #4: ffff88812c377160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #5: ffff88812bf35a20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #5: ffff88812bf35a20 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #6: ffffffff89bd6b08 (input_mutex){+.+.}-{3:3}, at: input_register_device+0x98a/0x1110 drivers/input/input.c:2463
4 locks held by acpid/2532:
 #0: ffff8881082a5230 (&dev->event_lock){..-.}-{2:2}, at: input_event drivers/input/input.c:397 [inline]
 #0: ffff8881082a5230 (&dev->event_lock){..-.}-{2:2}, at: input_event+0x70/0xa0 drivers/input/input.c:390
 #1: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #1: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: input_pass_values+0x8b/0x8e0 drivers/input/input.c:118
 #2: ffffffff89387a98 (kbd_event_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #2: ffffffff89387a98 (kbd_event_lock){..-.}-{2:2}, at: kbd_event+0x8a/0x17a0 drivers/tty/vt/keyboard.c:1535
 #3: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #3: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
2 locks held by getty/2605:
 #0: ffff88810f74d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
11 locks held by kworker/0:3/6516:
 #0: ffff8881066e5948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc900026cfd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: ffff888109797190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #2: ffff888109797190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
 #3: ffff888130c4e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #3: ffff888130c4e190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #4: ffff88812c376160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #4: ffff88812c376160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #5: ffff888131021a20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #5: ffff888131021a20 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #6: ffffffff89bd6b08 (input_mutex){+.+.}-{3:3}, at: input_register_device+0x98a/0x1110 drivers/input/input.c:2463
 #7: ffff88811aa2e2f0 (&led_cdev->led_access){+.+.}-{3:3}, at: led_classdev_register_ext+0x51b/0x9e0 drivers/leds/led-class.c:515
 #8: ffffffff892bb7d0 (triggers_list_lock){++++}-{3:3}, at: led_trigger_set_default drivers/leds/led-triggers.c:284 [inline]
 #8: ffffffff892bb7d0 (triggers_list_lock){++++}-{3:3}, at: led_trigger_set_default+0x5c/0x2a0 drivers/leds/led-triggers.c:276
 #9: ffff88811aa2e208 (&led_cdev->trigger_lock){+.+.}-{3:3}, at: led_trigger_set_default drivers/leds/led-triggers.c:285 [inline]
 #9: ffff88811aa2e208 (&led_cdev->trigger_lock){+.+.}-{3:3}, at: led_trigger_set_default+0x70/0x2a0 drivers/leds/led-triggers.c:276
 #10: ffffffff88ec69f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297
1 lock held by syz.3.23/8804:
 #0: ffffffff88ec69f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
3 locks held by syz-executor/8833:
 #0: ffff888113c743f8 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4019
 #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
 #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:4026
 #2: ffff888113c88958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
2 locks held by syz-executor/8851:
 #0: ffff888113c743f8 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4019
 #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
 #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:4026
2 locks held by syz-executor/8852:
 #0: ffff888113c743f8 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4019
 #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
 #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:4026
1 lock held by modprobe/9577:

=============================================

task:init            state:S stack:22000 pid:1     tgid:1     ppid:0      flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6767
 schedule_hrtimeout_range_clock+0x369/0x3b0 kernel/time/hrtimer.c:2272
 do_sigtimedwait+0x42f/0x5c0 kernel/signal.c:3665
 __do_sys_rt_sigtimedwait kernel/signal.c:3709 [inline]
 __se_sys_rt_sigtimedwait kernel/signal.c:3687 [inline]
 __x64_sys_rt_sigtimedwait+0x1ec/0x2e0 kernel/signal.c:3687
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd5ca08a23c
RSP: 002b:00007ffc7f2936d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000080
RAX: ffffffffffffffda RBX: 00007fd5ca2c013c RCX: 00007fd5ca08a23c
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fd5ca2c54a8
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc7f293738 R14: 000055ff5f932169 R15: 00007fd5ca2fca80
 </TASK>
task:kthreadd        state:S stack:27024 pid:2     tgid:2     ppid:0      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6767
 kthreadd+0x5ba/0x7d0 kernel/kthread.c:755
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:pool_workqueue_ state:S stack:30464 pid:3     tgid:3     ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6767
 kthread_worker_fn+0x502/0xba0 kernel/kthread.c:851
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/R-rcu_g state:I stack:30288 pid:4     tgid:4     ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6767
 rescuer_thread+0x946/0xe20 kernel/workqueue.c:3541
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/R-sync_ state:I stack:30832 pid:5     tgid:5     ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6767
 rescuer_thread+0x946/0xe20 kernel/workqueue.c:3541
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/R-slub_ state:I stack:30832 pid:6     tgid:6     ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6767
 rescuer_thread+0x946/0xe20 kernel/workqueue.c:3541
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/R-netns state:I stack:30832 pid:7     tgid:7     ppid:2      flags:0x00004000


Tested on:

commit:         00c5e66c MAINTAINERS: kasan, kcov: add bugzilla links
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable
console output: https://syzkaller.appspot.com/x/log.txt?x=127a045f980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e56f1fcedfd0b54e
dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file
  2024-10-15 10:32   ` syzbot
@ 2024-10-15 10:43     ` Lorenzo Stoakes
  0 siblings, 0 replies; 9+ messages in thread
From: Lorenzo Stoakes @ 2024-10-15 10:43 UTC (permalink / raw)
  To: syzbot
  Cc: akpm, liam.howlett, linux-input, linux-kernel, linux-mm,
	linux-usb, syzkaller-bugs, vbabka

On Tue, Oct 15, 2024 at 03:32:03AM -0700, syzbot wrote:
> Hello,
>
> syzbot has tested the proposed patch but the reproducer is still triggering an issue:
> INFO: rcu detected stall in do_syscall_64

OK I think we can rule out the maple tree bug.

I don't see vma_link_file() in the splats below so I'm thinking this is
unrelated to mm, probably?

USB guys? :)

>
> rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2664 jiffies s: 1445 root: 0x2/.
> rcu: blocking rcu_node structures (internal RCU debug):
>
> Sending NMI from CPU 0 to CPUs 1:
> NMI backtrace for cpu 1
> CPU: 1 UID: 0 PID: 2532 Comm: acpid Not tainted 6.12.0-rc2-syzkaller-00039-g00c5e66c934c #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
> RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:407
> Code: 79 b5 fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 f8 f4 0d ff eb a2 e8 81 f5
> RSP: 0018:ffffc900001b7f08 EFLAGS: 00000002
> RAX: dffffc0000000060 RBX: 00000000000003fd RCX: 0000000000000000
> RDX: 00000000000003fd RSI: ffffffff82a065b0 RDI: ffffffff93633660
> RBP: ffffffff93633620 R08: 0000000000000001 R09: 000000000000001f
> R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
> R13: 0000000000000020 R14: fffffbfff26c671e R15: dffffc0000000000
> FS:  00007fce9143b740(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000001b2ce5ffff CR3: 0000000115abe000 CR4: 00000000003506f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
>  <NMI>
>  </NMI>
>  <IRQ>
>  serial_in drivers/tty/serial/8250/8250.h:137 [inline]
>  serial_lsr_in drivers/tty/serial/8250/8250.h:159 [inline]
>  wait_for_lsr+0xda/0x180 drivers/tty/serial/8250/8250_port.c:2068
>  serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline]
>  serial8250_console_write+0xf5a/0x17c0 drivers/tty/serial/8250/8250_port.c:3393
>  console_emit_next_record kernel/printk/printk.c:3092 [inline]
>  console_flush_all+0x800/0xc60 kernel/printk/printk.c:3180
>  __console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
>  console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
>  vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
>  vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
>  _printk+0xc8/0x100 kernel/printk/printk.c:2432
>  printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
>  show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285
>  sched_show_task kernel/sched/core.c:7582 [inline]
>  sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7557
>  show_state_filter+0xee/0x320 kernel/sched/core.c:7627
>  k_spec drivers/tty/vt/keyboard.c:667 [inline]
>  k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
>  kbd_keycode drivers/tty/vt/keyboard.c:1522 [inline]
>  kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541
>  input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2549
>  input_pass_values+0x777/0x8e0 drivers/input/input.c:126
>  input_event_dispose drivers/input/input.c:352 [inline]
>  input_handle_event+0xb30/0x14d0 drivers/input/input.c:369
>  input_event drivers/input/input.c:398 [inline]
>  input_event+0x83/0xa0 drivers/input/input.c:390
>  hidinput_hid_event+0xa12/0x2410 drivers/hid/hid-input.c:1719
>  hid_process_event+0x4b7/0x5e0 drivers/hid/hid-core.c:1540
>  hid_input_array_field+0x535/0x710 drivers/hid/hid-core.c:1652
>  hid_process_report drivers/hid/hid-core.c:1694 [inline]
>  hid_report_raw_event+0xa02/0x11c0 drivers/hid/hid-core.c:2040
>  __hid_input_report.constprop.0+0x341/0x440 drivers/hid/hid-core.c:2110
>  hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285
>  __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
>  usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
>  dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1988
>  __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
>  __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755
>  hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
>  handle_softirqs+0x206/0x8d0 kernel/softirq.c:554
>  __do_softirq kernel/softirq.c:588 [inline]
>  invoke_softirq kernel/softirq.c:428 [inline]
>  __irq_exit_rcu kernel/softirq.c:637 [inline]
>  irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
>  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
>  sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1037
>  </IRQ>
>  <TASK>
>  asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
> RIP: 0010:do_syscall_x64 arch/x86/entry/common.c:51 [inline]
> RIP: 0010:do_syscall_64+0xc0/0x250 arch/x86/entry/common.c:83
> Code: c6 bf 15 79 48 8b 50 08 f6 c2 3f 0f 85 3c 01 00 00 90 90 41 81 fc ce 01 00 00 0f 87 43 01 00 00 41 81 fc cf 01 00 00 48 19 c0 <44> 89 e6 48 89 df 21 c6 e8 d3 4b 12 fa 48 89 43 50 90 48 89 df e8
> RSP: 0018:ffffc9000182ff28 EFLAGS: 00000297
> RAX: ffffffffffffffff RBX: ffffc9000182ff58 RCX: 1ffffffff14ac131
> RDX: 0000000000000000 RSI: ffffffff8727f1c0 RDI: ffffffff8746eb40
> RBP: ffffc9000182ff48 R08: 0000000000000001 R09: 0000000000000001
> R10: ffffffff8a56428f R11: 0000000000000000 R12: 000000000000000e
> R13: 000000000000000e R14: 0000000000000000 R15: 0000000000000000
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fce914b1773
> Code: 00 f3 a5 48 8d 74 24 88 48 b9 ff ff ff 7f fe ff ff ff 48 21 c8 48 89 44 24 88 41 ba 08 00 00 00 44 89 c7 b8 0e 00 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 06 41 89 c0 41 f7 d8 44 89 c0 5a c3 41
> RSP: 002b:00007ffc56b7f150 EFLAGS: 00000246 ORIG_RAX: 000000000000000e
> RAX: ffffffffffffffda RBX: 0000557975a80906 RCX: 00007fce914b1773
> RDX: 0000000000000000 RSI: 0000557975a86480 RDI: 0000000000000000
> RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000001
> R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffc56b7f258
> R13: 0000557975a80178 R14: 0000000000000001 R15: 000000000000000a
>  </TASK>
>  </TASK>
>
> Showing all locks held in the system:
> 7 locks held by kworker/0:1/9:
>  #0: ffff8881066e5948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
>  #1: ffffc9000009fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
>  #2: ffff8881097a7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #2: ffff8881097a7190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
>  #3: ffff888106ab5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #3: ffff888106ab5190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
>  #4: ffff88812c375160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #4: ffff88812c375160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
>  #5: ffff888119b1da20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #5: ffff888119b1da20 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
>  #6: ffffffff89bd6b08 (input_mutex){+.+.}-{3:3}, at: input_register_device+0x98a/0x1110 drivers/input/input.c:2463
> 2 locks held by kworker/u8:4/54:
>  #0: ffff888100089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
>  #1: ffffc90000547d80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
> 2 locks held by kworker/u8:5/236:
>  #0: ffff888100089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
>  #1: ffffc9000163fd80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
> 7 locks held by kworker/0:2/679:
>  #0: ffff8881066e5948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
>  #1: ffffc90001c1fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
>  #2: ffff88810977f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #2: ffff88810977f190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
>  #3: ffff888105a8d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #3: ffff888105a8d190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
>  #4: ffff88812c377160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #4: ffff88812c377160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
>  #5: ffff88812bf35a20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #5: ffff88812bf35a20 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
>  #6: ffffffff89bd6b08 (input_mutex){+.+.}-{3:3}, at: input_register_device+0x98a/0x1110 drivers/input/input.c:2463
> 4 locks held by acpid/2532:
>  #0: ffff8881082a5230 (&dev->event_lock){..-.}-{2:2}, at: input_event drivers/input/input.c:397 [inline]
>  #0: ffff8881082a5230 (&dev->event_lock){..-.}-{2:2}, at: input_event+0x70/0xa0 drivers/input/input.c:390
>  #1: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
>  #1: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
>  #1: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: input_pass_values+0x8b/0x8e0 drivers/input/input.c:118
>  #2: ffffffff89387a98 (kbd_event_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
>  #2: ffffffff89387a98 (kbd_event_lock){..-.}-{2:2}, at: kbd_event+0x8a/0x17a0 drivers/tty/vt/keyboard.c:1535
>  #3: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
>  #3: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
>  #3: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
> 2 locks held by getty/2605:
>  #0: ffff88810f74d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
>  #1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
> 11 locks held by kworker/0:3/6516:
>  #0: ffff8881066e5948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
>  #1: ffffc900026cfd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
>  #2: ffff888109797190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #2: ffff888109797190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
>  #3: ffff888130c4e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #3: ffff888130c4e190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
>  #4: ffff88812c376160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #4: ffff88812c376160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
>  #5: ffff888131021a20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
>  #5: ffff888131021a20 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
>  #6: ffffffff89bd6b08 (input_mutex){+.+.}-{3:3}, at: input_register_device+0x98a/0x1110 drivers/input/input.c:2463
>  #7: ffff88811aa2e2f0 (&led_cdev->led_access){+.+.}-{3:3}, at: led_classdev_register_ext+0x51b/0x9e0 drivers/leds/led-class.c:515
>  #8: ffffffff892bb7d0 (triggers_list_lock){++++}-{3:3}, at: led_trigger_set_default drivers/leds/led-triggers.c:284 [inline]
>  #8: ffffffff892bb7d0 (triggers_list_lock){++++}-{3:3}, at: led_trigger_set_default+0x5c/0x2a0 drivers/leds/led-triggers.c:276
>  #9: ffff88811aa2e208 (&led_cdev->trigger_lock){+.+.}-{3:3}, at: led_trigger_set_default drivers/leds/led-triggers.c:285 [inline]
>  #9: ffff88811aa2e208 (&led_cdev->trigger_lock){+.+.}-{3:3}, at: led_trigger_set_default+0x70/0x2a0 drivers/leds/led-triggers.c:276
>  #10: ffffffff88ec69f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297
> 1 lock held by syz.3.23/8804:
>  #0: ffffffff88ec69f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
> 3 locks held by syz-executor/8833:
>  #0: ffff888113c743f8 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4019
>  #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
>  #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:4026
>  #2: ffff888113c88958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
> 2 locks held by syz-executor/8851:
>  #0: ffff888113c743f8 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4019
>  #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
>  #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:4026
> 2 locks held by syz-executor/8852:
>  #0: ffff888113c743f8 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4019
>  #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
>  #1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:4026
> 1 lock held by modprobe/9577:
>
> =============================================
>
> task:init            state:S stack:22000 pid:1     tgid:1     ppid:0      flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __schedule_loop kernel/sched/core.c:6752 [inline]
>  schedule+0xe7/0x350 kernel/sched/core.c:6767
>  schedule_hrtimeout_range_clock+0x369/0x3b0 kernel/time/hrtimer.c:2272
>  do_sigtimedwait+0x42f/0x5c0 kernel/signal.c:3665
>  __do_sys_rt_sigtimedwait kernel/signal.c:3709 [inline]
>  __se_sys_rt_sigtimedwait kernel/signal.c:3687 [inline]
>  __x64_sys_rt_sigtimedwait+0x1ec/0x2e0 kernel/signal.c:3687
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fd5ca08a23c
> RSP: 002b:00007ffc7f2936d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000080
> RAX: ffffffffffffffda RBX: 00007fd5ca2c013c RCX: 00007fd5ca08a23c
> RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fd5ca2c54a8
> RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000000
> R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
> R13: 00007ffc7f293738 R14: 000055ff5f932169 R15: 00007fd5ca2fca80
>  </TASK>
> task:kthreadd        state:S stack:27024 pid:2     tgid:2     ppid:0      flags:0x00004000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __schedule_loop kernel/sched/core.c:6752 [inline]
>  schedule+0xe7/0x350 kernel/sched/core.c:6767
>  kthreadd+0x5ba/0x7d0 kernel/kthread.c:755
>  ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
>  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
>  </TASK>
> task:pool_workqueue_ state:S stack:30464 pid:3     tgid:3     ppid:2      flags:0x00004000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __schedule_loop kernel/sched/core.c:6752 [inline]
>  schedule+0xe7/0x350 kernel/sched/core.c:6767
>  kthread_worker_fn+0x502/0xba0 kernel/kthread.c:851
>  kthread+0x2c1/0x3a0 kernel/kthread.c:389
>  ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
>  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
>  </TASK>
> task:kworker/R-rcu_g state:I stack:30288 pid:4     tgid:4     ppid:2      flags:0x00004000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __schedule_loop kernel/sched/core.c:6752 [inline]
>  schedule+0xe7/0x350 kernel/sched/core.c:6767
>  rescuer_thread+0x946/0xe20 kernel/workqueue.c:3541
>  kthread+0x2c1/0x3a0 kernel/kthread.c:389
>  ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
>  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
>  </TASK>
> task:kworker/R-sync_ state:I stack:30832 pid:5     tgid:5     ppid:2      flags:0x00004000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __schedule_loop kernel/sched/core.c:6752 [inline]
>  schedule+0xe7/0x350 kernel/sched/core.c:6767
>  rescuer_thread+0x946/0xe20 kernel/workqueue.c:3541
>  kthread+0x2c1/0x3a0 kernel/kthread.c:389
>  ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
>  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
>  </TASK>
> task:kworker/R-slub_ state:I stack:30832 pid:6     tgid:6     ppid:2      flags:0x00004000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __schedule_loop kernel/sched/core.c:6752 [inline]
>  schedule+0xe7/0x350 kernel/sched/core.c:6767
>  rescuer_thread+0x946/0xe20 kernel/workqueue.c:3541
>  kthread+0x2c1/0x3a0 kernel/kthread.c:389
>  ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
>  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
>  </TASK>
> task:kworker/R-netns state:I stack:30832 pid:7     tgid:7     ppid:2      flags:0x00004000
>
>
> Tested on:
>
> commit:         00c5e66c MAINTAINERS: kasan, kcov: add bugzilla links
> git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable
> console output: https://syzkaller.appspot.com/x/log.txt?x=127a045f980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=e56f1fcedfd0b54e
> dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
> compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
>
> Note: no patches were applied.

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file
  2024-10-14 15:02 [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file syzbot
  2024-10-15  8:44 ` Lorenzo Stoakes
@ 2024-10-15 20:05 ` Liam R. Howlett
  2024-10-15 20:27   ` syzbot
  1 sibling, 1 reply; 9+ messages in thread
From: Liam R. Howlett @ 2024-10-15 20:05 UTC (permalink / raw)
  To: syzbot
  Cc: akpm, linux-input, linux-kernel, linux-mm, linux-usb,
	lorenzo.stoakes, syzkaller-bugs, vbabka

* syzbot <syzbot+ce483fd06e2061f44f5d@syzkaller.appspotmail.com> [241014 11:02]:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    4a9fe2a8ac53 dt-bindings: usb: dwc3-imx8mp: add compatible..
> git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
> console output: https://syzkaller.appspot.com/x/log.txt?x=13425040580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=4510af5d637450fb
> dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
> compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17336fd0580000
> 
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/883c5319cb52/disk-4a9fe2a8.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/caf4421ed2ef/vmlinux-4a9fe2a8.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/d8e3beb01d49/bzImage-4a9fe2a8.xz
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+ce483fd06e2061f44f5d@syzkaller.appspotmail.com
> 

Let's see if this still exists.  I suspect so, but maybe not.

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable


> rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
>  1-...D } 2645 jiffies s: 2181 root: 0x2/.
> rcu: blocking rcu_node structures (internal RCU debug):
> 
> Sending NMI from CPU 0 to CPUs 1:
> NMI backtrace for cpu 1
> CPU: 1 UID: 0 PID: 13390 Comm: modprobe Not tainted 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
> RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:407
> Code: 6d b5 fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 38 eb 0d ff eb a2 e8 c1 eb
> RSP: 0018:ffffc900001b7f08 EFLAGS: 00000002
> RAX: dffffc0000000060 RBX: 00000000000003fd RCX: 0000000000000000
> RDX: 00000000000003fd RSI: ffffffff82a07780 RDI: ffffffff936356a0
> RBP: ffffffff93635660 R08: 0000000000000001 R09: 000000000000001f
> R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
> R13: 0000000000000020 R14: fffffbfff26c6b26 R15: dffffc0000000000
> FS:  0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007f62d4710409 CR3: 000000011ced8000 CR4: 00000000003506f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
>  <NMI>
>  </NMI>
>  <IRQ>
>  serial_in drivers/tty/serial/8250/8250.h:137 [inline]
>  serial_lsr_in drivers/tty/serial/8250/8250.h:159 [inline]
>  wait_for_lsr+0xda/0x180 drivers/tty/serial/8250/8250_port.c:2068
>  serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline]
>  serial8250_console_write+0xf5a/0x17c0 drivers/tty/serial/8250/8250_port.c:3393
>  console_emit_next_record kernel/printk/printk.c:3092 [inline]
>  console_flush_all+0x800/0xc60 kernel/printk/printk.c:3180
>  __console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
>  console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
>  vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
>  vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
>  _printk+0xc8/0x100 kernel/printk/printk.c:2432
>  printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
>  show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285
>  sched_show_task kernel/sched/core.c:7582 [inline]
>  sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7557
>  show_state_filter+0xee/0x320 kernel/sched/core.c:7627
>  k_spec drivers/tty/vt/keyboard.c:667 [inline]
>  k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
>  kbd_keycode drivers/tty/vt/keyboard.c:1522 [inline]
>  kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541
>  input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2549
>  input_pass_values+0x777/0x8e0 drivers/input/input.c:126
>  input_event_dispose drivers/input/input.c:352 [inline]
>  input_handle_event+0xb30/0x14d0 drivers/input/input.c:369
>  input_event drivers/input/input.c:398 [inline]
>  input_event+0x83/0xa0 drivers/input/input.c:390
>  hidinput_hid_event+0xa12/0x2410 drivers/hid/hid-input.c:1719
>  hid_process_event+0x4b7/0x5e0 drivers/hid/hid-core.c:1540
>  hid_input_array_field+0x535/0x710 drivers/hid/hid-core.c:1652
>  hid_process_report drivers/hid/hid-core.c:1694 [inline]
>  hid_report_raw_event+0xa02/0x11c0 drivers/hid/hid-core.c:2040
>  __hid_input_report.constprop.0+0x341/0x440 drivers/hid/hid-core.c:2110
>  hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285
>  __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
>  usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
>  dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1988
>  __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
>  __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755
>  hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
>  handle_softirqs+0x206/0x8d0 kernel/softirq.c:554
>  __do_softirq kernel/softirq.c:588 [inline]
>  invoke_softirq kernel/softirq.c:428 [inline]
>  __irq_exit_rcu kernel/softirq.c:637 [inline]
>  irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
>  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
>  sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1037
>  </IRQ>
>  <TASK>
>  asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
> RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
> RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:122 [inline]
> RIP: 0010:lock_is_held_type+0x35/0x150 kernel/locking/lockdep.c:5890
> Code: bd ff ff ff ff 41 54 55 53 48 83 ec 08 8b 0d ea d3 67 03 85 c9 0f 84 dd 00 00 00 65 8b 05 2b 0c 14 79 85 c0 0f 85 ce 00 00 00 <65> 4c 8b 25 93 46 15 79 41 8b 94 24 94 0a 00 00 85 d2 0f 85 b6 00
> RSP: 0018:ffffc90003d0f840 EFLAGS: 00000246
> RAX: 0000000000000000 RBX: 1ffff920007a1f12 RCX: 0000000000000001
> RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff88ebb040
> RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8727e760
> R13: 00000000ffffffff R14: ffffc90003d0fab8 R15: 00007fe8bee64000
>  lock_is_held include/linux/lockdep.h:249 [inline]
>  __might_resched+0x4ca/0x5e0 kernel/sched/core.c:8593
>  down_write+0x6f/0x200 kernel/locking/rwsem.c:1576
>  i_mmap_lock_write include/linux/fs.h:507 [inline]
>  vma_link_file+0x7b/0x120 mm/vma.c:1582
>  mmap_region+0x16ec/0x2900 mm/mmap.c:1515
>  do_mmap+0xc00/0xfc0 mm/mmap.c:496
>  vm_mmap_pgoff+0x1ba/0x350 mm/util.c:588
>  ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542
>  __do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
>  __se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline]
>  __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fe8bf117b74
> Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f
> RSP: 002b:00007ffde3a3dad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
> RAX: ffffffffffffffda RBX: 00007ffde3a3db50 RCX: 00007fe8bf117b74
> RDX: 0000000000000001 RSI: 0000000000007000 RDI: 00007fe8bee64000
> RBP: 00007ffde3a3deb0 R08: 0000000000000000 R09: 000000000001b000
> R10: 0000000000000812 R11: 0000000000000246 R12: 00007fe8bf0f4fc0
> R13: 00007ffde3a3df38 R14: 000000000001a43e R15: 0000000000000000
>  </TASK>
>  </TASK>
> task:kworker/u8:7    state:R  running task     stack:32568 pid:14340 tgid:14340 ppid:3242   flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14342 tgid:14342 ppid:2678   flags:0x00004002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f2bc08caa90
> RSP: 002b:00007ffd5b9ec338 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f2bc09bb860 RCX: 00007f2bc08caa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f2bc09bb860 R08: 0000000000000001 R09: 41db0d9426285180
> R10: 00007ffd5b9ec1f0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f2bc09bf658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14346 tgid:14346 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:kworker/u8:6    state:R  running task     stack:28784 pid:14347 tgid:14347 ppid:1131   flags:0x00004000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:kworker/u8:3    state:R  running task     stack:32568 pid:14354 tgid:14354 ppid:46     flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14355 tgid:14355 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f5de21e6a90
> RSP: 002b:00007fff1611ff28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f5de22d7860 RCX: 00007f5de21e6a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f5de22d7860 R08: 0000000000000001 R09: 46780758b7766d57
> R10: 00007fff1611fde0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f5de22db658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14359 tgid:14359 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14366 tgid:14366 ppid:2678   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14373 tgid:14373 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fa2dfe27a90
> RSP: 002b:00007ffd872a30e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fa2dff18860 RCX: 00007fa2dfe27a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fa2dff18860 R08: 0000000000000001 R09: 5f652800365ccb43
> R10: 00007ffd872a2fa0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fa2dff1c658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14379 tgid:14379 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14384 tgid:14384 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14387 tgid:14387 ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14393 tgid:14393 ppid:2678   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14398 tgid:14398 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14401 tgid:14401 ppid:3242   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14410 tgid:14410 ppid:3242   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14421 tgid:14421 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:23984 pid:14430 tgid:14430 ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f622cd7da90
> RSP: 002b:00007ffd1393cf78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f622ce6e860 RCX: 00007f622cd7da90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f622ce6e860 R08: 0000000000000001 R09: dfc6ef523a5d942e
> R10: 00007ffd1393ce30 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f622ce72658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14435 tgid:14435 ppid:3242   flags:0x00004002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fd05f2dca90
> RSP: 002b:00007ffdd773bdf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fd05f3cd860 RCX: 00007fd05f2dca90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fd05f3cd860 R08: 0000000000000001 R09: 4535f641cc4c0f28
> R10: 00007ffdd773bcb0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fd05f3d1658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14440 tgid:14440 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fe7ecd82a90
> RSP: 002b:00007ffcc7a7bf68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fe7ece73860 RCX: 00007fe7ecd82a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fe7ece73860 R08: 0000000000000001 R09: 2fdb21dbc668df0d
> R10: 00007ffcc7a7be20 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fe7ece77658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14446 tgid:14446 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14448 tgid:14448 ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f7d319bfa90
> RSP: 002b:00007ffe4a0e5cd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f7d31ab0860 RCX: 00007f7d319bfa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f7d31ab0860 R08: 0000000000000001 R09: df5d5dca07fffb84
> R10: 00007ffe4a0e5b90 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f7d31ab4658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14453 tgid:14453 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7ff382b23a90
> RSP: 002b:00007fffced1e578 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007ff382c14860 RCX: 00007ff382b23a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007ff382c14860 R08: 0000000000000001 R09: 48767732b8a00d20
> R10: 00007fffced1e430 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007ff382c18658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:23984 pid:14458 tgid:14458 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6854
>  __cond_resched+0x1b/0x30 kernel/sched/core.c:7192
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14462 tgid:14462 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:24416 pid:14466 tgid:14466 ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fa2b9c04a90
> RSP: 002b:00007ffcac65ac18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fa2b9cf5860 RCX: 00007fa2b9c04a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fa2b9cf5860 R08: 0000000000000001 R09: 44ac5dd007bc47d9
> R10: 00007ffcac65aad0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fa2b9cf9658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14472 tgid:14472 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14475 tgid:14475 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14482 tgid:14482 ppid:2678   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f564677ca90
> RSP: 002b:00007ffea046cdf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f564686d860 RCX: 00007f564677ca90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f564686d860 R08: 0000000000000001 R09: 93e6ddf45d0859c7
> R10: 00007ffea046ccb0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f5646871658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14488 tgid:14488 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14497 tgid:14497 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14504 tgid:14504 ppid:3242   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fe9ec399a90
> RSP: 002b:00007ffee4562488 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fe9ec48a860 RCX: 00007fe9ec399a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fe9ec48a860 R08: 0000000000000001 R09: 0fccf8818db050ca
> R10: 00007ffee4562340 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fe9ec48e658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14509 tgid:14509 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14512 tgid:14512 ppid:3242   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14515 tgid:14515 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14516 tgid:14516 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fcaccae7a90
> RSP: 002b:00007fff73141d48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fcaccbd8860 RCX: 00007fcaccae7a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fcaccbd8860 R08: 0000000000000001 R09: a45b974d1de31a4f
> R10: 00007fff73141c00 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fcaccbdc658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14521 tgid:14521 ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f4322dd7a90
> RSP: 002b:00007fffc607e378 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f4322ec8860 RCX: 00007f4322dd7a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f4322ec8860 R08: 0000000000000001 R09: 5c992bf7597daffb
> R10: 00007fffc607e230 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f4322ecc658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24416 pid:14526 tgid:14526 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f638696fa90
> RSP: 002b:00007ffe0066ce18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f6386a60860 RCX: 00007f638696fa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f6386a60860 R08: 0000000000000001 R09: c9a8bb5340cb61d8
> R10: 00007ffe0066ccd0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f6386a64658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24416 pid:14532 tgid:14532 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14540 tgid:14540 ppid:3242   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f3a9b2d4a90
> RSP: 002b:00007ffe77381b78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f3a9b3c5860 RCX: 00007f3a9b2d4a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f3a9b3c5860 R08: 0000000000000001 R09: 755e1725d4f4842a
> R10: 00007ffe77381a30 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f3a9b3c9658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14545 tgid:14545 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f560707fa90
> RSP: 002b:00007ffe65145b28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f5607170860 RCX: 00007f560707fa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f5607170860 R08: 0000000000000001 R09: b546563a3277b2da
> R10: 00007ffe651459e0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f5607174658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14550 tgid:14550 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14558 tgid:14558 ppid:3242   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14564 tgid:14564 ppid:3242   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __pfx_lock_release+0x10/0x10 kernel/locking/lockdep.c:5346
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14569 tgid:14569 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:23984 pid:14574 tgid:14574 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14577 tgid:14577 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14584 tgid:14584 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14585 tgid:14585 ppid:3242   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14587 tgid:14587 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14599 tgid:14599 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14602 tgid:14602 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14607 tgid:14607 ppid:2678   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14612 tgid:14612 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f5193264a90
> RSP: 002b:00007ffe01417e78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f5193355860 RCX: 00007f5193264a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f5193355860 R08: 0000000000000001 R09: 5005ebcf5767047b
> R10: 00007ffe01417d30 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f5193359658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14618 tgid:14618 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14621 tgid:14621 ppid:1131   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14629 tgid:14629 ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24704 pid:14634 tgid:14634 ppid:3242   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25408 pid:14636 tgid:14636 ppid:1131   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5315 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6675
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f8d8d1ffa90
> RSP: 002b:00007ffe30417e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f8d8d2f0860 RCX: 00007f8d8d1ffa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f8d8d2f0860 R08: 0000000000000001 R09: 44dca94248773cd7
> R10: 00007ffe30417d00 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f8d8d2f4658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:14642 tgid:14642 ppid:3242   flags:0x00000002
> Call Trace:
>  <TASK>
> 
> 
> ---
> This report is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@googlegroups.com.
> 
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> 
> If the report is already addressed, let syzbot know by replying with:
> #syz fix: exact-commit-title
> 
> If you want syzbot to run the reproducer, reply with:
> #syz test: git://repo/address.git branch-or-commit-hash
> If you attach or paste a git patch, syzbot will apply it before testing.
> 
> If you want to overwrite report's subsystems, reply with:
> #syz set subsystems: new-subsystem
> (See the list of subsystem names on the web dashboard)
> 
> If the report is a duplicate of another one, reply with:
> #syz dup: exact-subject-of-another-report
> 
> If you want to undo deduplication, reply with:
> #syz undup

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file
  2024-10-15 20:05 ` Liam R. Howlett
@ 2024-10-15 20:27   ` syzbot
  2024-10-16  7:06     ` Lorenzo Stoakes
  0 siblings, 1 reply; 9+ messages in thread
From: syzbot @ 2024-10-15 20:27 UTC (permalink / raw)
  To: akpm, liam.howlett, linux-input, linux-kernel, linux-mm,
	linux-usb, lorenzo.stoakes, syzkaller-bugs, vbabka

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
INFO: rcu detected stall in corrupted

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 0-...D } 2647 jiffies s: 1489 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 2536 Comm: acpid Not tainted 6.12.0-rc3-syzkaller-00033-g80bf308c69a9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:format_decode+0x94d/0xba0 lib/vsprintf.c:2571
Code: 41 bd 4c 00 00 00 48 89 5c 24 38 e9 fb fa ff ff e8 68 6a 6f fa 31 f6 31 ff e8 3f 6c 6f fa e8 5a 6a 6f fa 31 db e9 82 f9 ff ff <e8> 4e 6a 6f fa 48 8d 7c 24 38 e8 24 d5 ff ff 48 8b 6c 24 38 0f b6
RSP: 0000:ffffc900016aea48 EFLAGS: 00000097
RAX: 0000000000000000 RBX: ffffffff8728c721 RCX: ffffffff86e6726f
RDX: ffff888115f1ba80 RSI: 0000000000000009 RDI: 0000000000000005
RBP: ffffffff8728c722 R08: 0000000000000005 R09: 0000000000000009
R10: 0000000000000005 R11: 0000000000040348 R12: ffffc900016aeb48
R13: ffffffff8728c721 R14: 0000000000000035 R15: 0000000000000005
FS:  00007fe77c367740(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557a1e480818 CR3: 0000000115f98000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 vsnprintf+0x13d/0x1880 lib/vsprintf.c:2755
 sprintf+0xcd/0x110 lib/vsprintf.c:3007
 print_time kernel/printk/printk.c:1362 [inline]
 info_print_prefix+0x25c/0x350 kernel/printk/printk.c:1388
 record_print_text+0x141/0x400 kernel/printk/printk.c:1437
 printk_get_next_message+0x2a6/0x670 kernel/printk/printk.c:2978
 console_emit_next_record kernel/printk/printk.c:3046 [inline]
 console_flush_all+0x6ec/0xc60 kernel/printk/printk.c:3180
 __console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
 _printk+0xc8/0x100 kernel/printk/printk.c:2432
 printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
 show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285
 sched_show_task kernel/sched/core.c:7589 [inline]
 sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7564
 show_state_filter+0xee/0x320 kernel/sched/core.c:7634
 k_spec drivers/tty/vt/keyboard.c:667 [inline]
 k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
 kbd_keycode drivers/tty/vt/keyboard.c:1522 [inline]
 kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541
 input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2549
 input_pass_values+0x777/0x8e0 drivers/input/input.c:126
 input_event_dispose drivers/input/input.c:352 [inline]
 input_handle_event+0xb30/0x14d0 drivers/input/input.c:369
 input_event drivers/input/input.c:398 [inline]
 input_event+0x83/0xa0 drivers/input/input.c:390
 hidinput_hid_event+0xa12/0x2410 drivers/hid/hid-input.c:1719
 hid_process_event+0x4b7/0x5e0 drivers/hid/hid-core.c:1540
 hid_input_array_field+0x535/0x710 drivers/hid/hid-core.c:1652
 hid_process_report drivers/hid/hid-core.c:1694 [inline]
 hid_report_raw_event+0xa02/0x11c0 drivers/hid/hid-core.c:2040
 __hid_input_report.constprop.0+0x341/0x440 drivers/hid/hid-core.c:2110
 hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285
 __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
 dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1988
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
 handle_softirqs+0x206/0x8d0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1037
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0033:0x7fe77c3dd773
Code: 00 f3 a5 48 8d 74 24 88 48 b9 ff ff ff 7f fe ff ff ff 48 21 c8 48 89 44 24 88 41 ba 08 00 00 00 44 89 c7 b8 0e 00 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 06 41 89 c0 41 f7 d8 44 89 c0 5a c3 41
RSP: 002b:00007ffcef9c0fa0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000055591f199906 RCX: 00007fe77c3dd773
RDX: 0000000000000000 RSI: 000055591f19f480 RDI: 0000000000000000
RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffcef9c10a8
R13: 000055591f199178 R14: 0000000000000001 R15: 000000000000000a
 </TASK>
 </TASK>
task:kworker/u8:1    state:R  running task     stack:32568 pid:9565  tgid:9565  ppid:28     flags:0x00004000
Call Trace:
 <TASK>
 __switch_to_asm+0x70/0x70
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9568  tgid:9568  ppid:1114   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:kworker/u8:9    state:R  running task     stack:28784 pid:9576  tgid:9576  ppid:1148   flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6861
 __cond_resched+0x1b/0x30 kernel/sched/core.c:7199
 _cond_resched include/linux/sched.h:2031 [inline]
 stop_one_cpu+0x112/0x190 kernel/stop_machine.c:151
 sched_exec+0x1dc/0x270 kernel/sched/core.c:5453
 bprm_execve fs/exec.c:1838 [inline]
 bprm_execve+0x46c/0x1950 fs/exec.c:1821
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9585  tgid:9585  ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9599  tgid:9599  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9608  tgid:9608  ppid:1148   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f51cee31a90
RSP: 002b:00007ffd78235dd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f51cef22860 RCX: 00007f51cee31a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f51cef22860 R08: 0000000000000001 R09: d9f10af76f91c837
R10: 00007ffd78235c90 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f51cef26658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:24416 pid:9615  tgid:9615  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7febdbac2a90
RSP: 002b:00007ffdc4cdeff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007febdbbb3860 RCX: 00007febdbac2a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007febdbbb3860 R08: 0000000000000001 R09: 9c513921461b8e44
R10: 00007ffdc4cdeeb0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007febdbbb7658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9621  tgid:9621  ppid:11     flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f439b8b7a90
RSP: 002b:00007fffe0ac2d68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f439b9a8860 RCX: 00007f439b8b7a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f439b9a8860 R08: 0000000000000001 R09: ff9d4db23f41e35a
R10: 00007fffe0ac2c20 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f439b9ac658 R15: 0000000000000001
 </TASK>
task:modprobe        state:D stack:25424 pid:9627  tgid:9627  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9640  tgid:9640  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:modprobe        state:R  running task     stack:24416 pid:9649  tgid:9649  ppid:11     flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9ff0b0ba90
RSP: 002b:00007ffcc7ed1848 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f9ff0bfc860 RCX: 00007f9ff0b0ba90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f9ff0bfc860 R08: 0000000000000001 R09: 53b7f4bb0ff00e10
R10: 00007ffcc7ed1700 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f9ff0c00658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9656  tgid:9656  ppid:1114   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 __pfx___lock_acquire+0x10/0x10 kernel/locking/lockdep.c:4387
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9664  tgid:9664  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f260c278a90
RSP: 002b:00007ffca8cbcb18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f260c369860 RCX: 00007f260c278a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f260c369860 R08: 0000000000000001 R09: ec1b067fce940b65
R10: 00007ffca8cbc9d0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f260c36d658 R15: 0000000000000001
 </TASK>
task:kworker/u8:0    state:R  running task     stack:32568 pid:9671  tgid:9671  ppid:11     flags:0x00004000
Call Trace:
 <TASK>
 __switch_to_asm+0x70/0x70
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9672  tgid:9672  ppid:1114   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f395cc9ea90
RSP: 002b:00007ffff1d03df8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f395cd8f860 RCX: 00007f395cc9ea90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f395cd8f860 R08: 0000000000000001 R09: 0c83ee7b55e5651c
R10: 00007ffff1d03cb0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f395cd93658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25136 pid:9678  tgid:9678  ppid:28     flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4fb9369a90
RSP: 002b:00007ffde76a6918 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f4fb945a860 RCX: 00007f4fb9369a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f4fb945a860 R08: 0000000000000001 R09: 56a7058e5d32bb87
R10: 00007ffde76a67d0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f4fb945e658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9684  tgid:9684  ppid:1148   flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9694  tgid:9694  ppid:28     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f306776fa90
RSP: 002b:00007ffe0ff593a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f3067860860 RCX: 00007f306776fa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f3067860860 R08: 0000000000000001 R09: 7fe3f123c3d90a52
R10: 00007ffe0ff59260 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f3067864658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25136 pid:9701  tgid:9701  ppid:1148   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:modprobe        state:R  running task     stack:25344 pid:9710  tgid:9710  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:modprobe        state:R  running task     stack:24000 pid:9714  tgid:9714  ppid:1114   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe83ca73a90
RSP: 002b:00007fff91de4128 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fe83cb64860 RCX: 00007fe83ca73a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fe83cb64860 R08: 0000000000000001 R09: 0380a4352b815b7d
R10: 00007fff91de3fe0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fe83cb68658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9719  tgid:9719  ppid:28     flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9726  tgid:9726  ppid:28     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9734  tgid:9734  ppid:28     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f880ede0a90
RSP: 002b:00007ffca15eb9f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f880eed1860 RCX: 00007f880ede0a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f880eed1860 R08: 0000000000000001 R09: 6855b1290ac23e74
R10: 00007ffca15eb8b0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f880eed5658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25136 pid:9737  tgid:9737  ppid:1148   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd1ff7caa90
RSP: 002b:00007fff7f497088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fd1ff8bb860 RCX: 00007fd1ff7caa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fd1ff8bb860 R08: 0000000000000001 R09: 93c7e6092e4e8d94
R10: 00007fff7f496f40 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fd1ff8bf658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9741  tgid:9741  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b768dca90
RSP: 002b:00007ffed6373f08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f3b769cd860 RCX: 00007f3b768dca90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f3b769cd860 R08: 0000000000000001 R09: cbb88f32d31ba940
R10: 00007ffed6373dc0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f3b769d1658 R15: 0000000000000001
 </TASK>
task:kworker/u8:1    state:R  running task     stack:32568 pid:9750  tgid:9750  ppid:28     flags:0x00004000
Call Trace:
 <TASK>
 __switch_to_asm+0x70/0x70
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9752  tgid:9752  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:kworker/u8:7    state:R  running task     stack:32568 pid:9755  tgid:9755  ppid:1114   flags:0x00004000
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9760  tgid:9760  ppid:1148   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:kworker/u8:1    state:R  running task     stack:32568 pid:9762  tgid:9762  ppid:28     flags:0x00004000
Call Trace:
 <TASK>
 __switch_to_asm+0x70/0x70
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9766  tgid:9766  ppid:46     flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9772  tgid:9772  ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f42d3bdba90
RSP: 002b:00007fffe30e2e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f42d3ccc860 RCX: 00007f42d3bdba90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f42d3ccc860 R08: 0000000000000001 R09: 4e69d63dc7a7fcc0
R10: 00007fffe30e2cc0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f42d3cd0658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9778  tgid:9778  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9786  tgid:9786  ppid:11     flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9796  tgid:9796  ppid:1114   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f68f99e1a90
RSP: 002b:00007ffe63673f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f68f9ad2860 RCX: 00007f68f99e1a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f68f9ad2860 R08: 0000000000000001 R09: f47c3fb77550af2e
R10: 00007ffe63673e10 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f68f9ad6658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9801  tgid:9801  ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb781c83a90
RSP: 002b:00007ffd60d9ea28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fb781d74860 RCX: 00007fb781c83a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fb781d74860 R08: 0000000000000001 R09: 215fd20ce0e6152e
R10: 00007ffd60d9e8e0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fb781d78658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9809  tgid:9809  ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:modprobe        state:R  running task     stack:24000 pid:9818  tgid:9818  ppid:11     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9722143a90
RSP: 002b:00007ffe05d6de28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f9722234860 RCX: 00007f9722143a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f9722234860 R08: 0000000000000001 R09: 6b4b8080cd93a00c
R10: 00007ffe05d6dce0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f9722238658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25136 pid:9825  tgid:9825  ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9835  tgid:9835  ppid:11     flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9845  tgid:9845  ppid:1114   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdda0a27a90
RSP: 002b:00007ffe05bd09d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fdda0b18860 RCX: 00007fdda0a27a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fdda0b18860 R08: 0000000000000001 R09: ff36ed7236d48a13
R10: 00007ffe05bd0890 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fdda0b1c658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:24000 pid:9851  tgid:9851  ppid:11     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe833113a90
RSP: 002b:00007fff2a01fc28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fe833204860 RCX: 00007fe833113a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fe833204860 R08: 0000000000000001 R09: 35ed84c02d71e9d4
R10: 00007fff2a01fae0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fe833208658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9857  tgid:9857  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3964397a90
RSP: 002b:00007ffd9166d4b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f3964488860 RCX: 00007f3964397a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f3964488860 R08: 0000000000000001 R09: 8f528e78319cc9bc
R10: 00007ffd9166d370 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f396448c658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9865  tgid:9865  ppid:11     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 </TASK>
task:modprobe        state:R  running task     stack:25344 pid:9874  tgid:9874  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff415499a90
RSP: 002b:00007ffc31aa1ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007ff41558a860 RCX: 00007ff415499a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007ff41558a860 R08: 0000000000000001 R09: bec4dee6b5bd8695
R10: 00007ffc31aa1d90 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ff41558e658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9880  tgid:9880  ppid:46     flags:0x00000000
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9882  tgid:9882  ppid:1148   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6775f63a90
RSP: 002b:00007ffc48cbf6e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f6776054860 RCX: 00007f6775f63a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f6776054860 R08: 0000000000000001 R09: 2978e367673e3d81
R10: 00007ffc48cbf5a0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f6776058658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25136 pid:9888  tgid:9888  ppid:46     flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa6ea053a90
RSP: 002b:00007ffca5ca66d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fa6ea144860 RCX: 00007fa6ea053a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fa6ea144860 R08: 0000000000000001 R09: e7a3475f3e0f6286
R10: 00007ffca5ca6590 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa6ea148658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:24000 pid:9895  tgid:9895  ppid:1148   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
 do_exit+0x1de7/0x2ce0 kernel/exit.c:990
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
 x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff086b4da90
RSP: 002b:00007ffc358ac5f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007ff086c3e860 RCX: 00007ff086b4da90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007ff086c3e860 R08: 0000000000000001 R09: 29caad31773cb941
R10: 00007ffc358ac4b0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ff086c42658 R15: 0000000000000001
 </TASK>
task:modprobe        state:R  running task     stack:25424 pid:9901  tgid:9901  ppid:1114   flags:0x00000002
Call Trace:
 <TASK>
 </TASK>
task:modprobe        state:R  running task     stack:24720 pid:9911  tgid:9911  ppid:1148   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
 do_task_dead+0xd6/0x110 kernel/sched/core.c:6698


Tested on:

commit:         80bf308c mm/mglru: only clear kswapd_failures if recla..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable
console output: https://syzkaller.appspot.com/x/log.txt?x=1600445f980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9878fe11046ea2c6
dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file
  2024-10-15 20:27   ` syzbot
@ 2024-10-16  7:06     ` Lorenzo Stoakes
  2024-10-16  7:14       ` Greg Kroah-Hartman
  0 siblings, 1 reply; 9+ messages in thread
From: Lorenzo Stoakes @ 2024-10-16  7:06 UTC (permalink / raw)
  To: syzbot
  Cc: akpm, liam.howlett, linux-input, linux-kernel, linux-mm,
	linux-usb, syzkaller-bugs, vbabka, Greg Kroah-Hartman,
	Marcello Sylvester Bauer, Jiri Kosina, Benjamin Tissoires

+ some people from USB/HID subsystem.

This is really not looking mm-related, as for a second time we've asked
syzbot to re-run and for a second time it's not hit any mm-specific code -
I think this is misattributed - could somebody from the USB/HID side take a
look?

It looks to be something that isn't reproduced by a specific C program but
by a syzkaller USB configuration [0]?

Thanks!

[0]: https://syzkaller.appspot.com/x/repro.syz?x=17336fd0580000

On Tue, Oct 15, 2024 at 01:27:03PM -0700, syzbot wrote:
> Hello,
>
> syzbot has tested the proposed patch but the reproducer is still triggering an issue:
> INFO: rcu detected stall in corrupted
>
> rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
>  0-...D } 2647 jiffies s: 1489 root: 0x1/.
> rcu: blocking rcu_node structures (internal RCU debug):
>
> Sending NMI from CPU 1 to CPUs 0:
> NMI backtrace for cpu 0
> CPU: 0 UID: 0 PID: 2536 Comm: acpid Not tainted 6.12.0-rc3-syzkaller-00033-g80bf308c69a9 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
> RIP: 0010:format_decode+0x94d/0xba0 lib/vsprintf.c:2571
> Code: 41 bd 4c 00 00 00 48 89 5c 24 38 e9 fb fa ff ff e8 68 6a 6f fa 31 f6 31 ff e8 3f 6c 6f fa e8 5a 6a 6f fa 31 db e9 82 f9 ff ff <e8> 4e 6a 6f fa 48 8d 7c 24 38 e8 24 d5 ff ff 48 8b 6c 24 38 0f b6
> RSP: 0000:ffffc900016aea48 EFLAGS: 00000097
> RAX: 0000000000000000 RBX: ffffffff8728c721 RCX: ffffffff86e6726f
> RDX: ffff888115f1ba80 RSI: 0000000000000009 RDI: 0000000000000005
> RBP: ffffffff8728c722 R08: 0000000000000005 R09: 0000000000000009
> R10: 0000000000000005 R11: 0000000000040348 R12: ffffc900016aeb48
> R13: ffffffff8728c721 R14: 0000000000000035 R15: 0000000000000005
> FS:  00007fe77c367740(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000557a1e480818 CR3: 0000000115f98000 CR4: 00000000003506f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
>  <NMI>
>  </NMI>
>  <TASK>
>  vsnprintf+0x13d/0x1880 lib/vsprintf.c:2755
>  sprintf+0xcd/0x110 lib/vsprintf.c:3007
>  print_time kernel/printk/printk.c:1362 [inline]
>  info_print_prefix+0x25c/0x350 kernel/printk/printk.c:1388
>  record_print_text+0x141/0x400 kernel/printk/printk.c:1437
>  printk_get_next_message+0x2a6/0x670 kernel/printk/printk.c:2978
>  console_emit_next_record kernel/printk/printk.c:3046 [inline]
>  console_flush_all+0x6ec/0xc60 kernel/printk/printk.c:3180
>  __console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
>  console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
>  vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
>  vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
>  _printk+0xc8/0x100 kernel/printk/printk.c:2432
>  printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
>  show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285
>  sched_show_task kernel/sched/core.c:7589 [inline]
>  sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7564
>  show_state_filter+0xee/0x320 kernel/sched/core.c:7634
>  k_spec drivers/tty/vt/keyboard.c:667 [inline]
>  k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
>  kbd_keycode drivers/tty/vt/keyboard.c:1522 [inline]
>  kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541
>  input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2549
>  input_pass_values+0x777/0x8e0 drivers/input/input.c:126
>  input_event_dispose drivers/input/input.c:352 [inline]
>  input_handle_event+0xb30/0x14d0 drivers/input/input.c:369
>  input_event drivers/input/input.c:398 [inline]
>  input_event+0x83/0xa0 drivers/input/input.c:390
>  hidinput_hid_event+0xa12/0x2410 drivers/hid/hid-input.c:1719
>  hid_process_event+0x4b7/0x5e0 drivers/hid/hid-core.c:1540
>  hid_input_array_field+0x535/0x710 drivers/hid/hid-core.c:1652
>  hid_process_report drivers/hid/hid-core.c:1694 [inline]
>  hid_report_raw_event+0xa02/0x11c0 drivers/hid/hid-core.c:2040
>  __hid_input_report.constprop.0+0x341/0x440 drivers/hid/hid-core.c:2110
>  hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285
>  __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
>  usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
>  dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1988
>  __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
>  __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755
>  hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
>  handle_softirqs+0x206/0x8d0 kernel/softirq.c:554
>  __do_softirq kernel/softirq.c:588 [inline]
>  invoke_softirq kernel/softirq.c:428 [inline]
>  __irq_exit_rcu kernel/softirq.c:637 [inline]
>  irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
>  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
>  sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1037
>  asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
> RIP: 0033:0x7fe77c3dd773
> Code: 00 f3 a5 48 8d 74 24 88 48 b9 ff ff ff 7f fe ff ff ff 48 21 c8 48 89 44 24 88 41 ba 08 00 00 00 44 89 c7 b8 0e 00 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 06 41 89 c0 41 f7 d8 44 89 c0 5a c3 41
> RSP: 002b:00007ffcef9c0fa0 EFLAGS: 00000246
> RAX: 0000000000000000 RBX: 000055591f199906 RCX: 00007fe77c3dd773
> RDX: 0000000000000000 RSI: 000055591f19f480 RDI: 0000000000000000
> RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000001
> R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffcef9c10a8
> R13: 000055591f199178 R14: 0000000000000001 R15: 000000000000000a
>  </TASK>
>  </TASK>
> task:kworker/u8:1    state:R  running task     stack:32568 pid:9565  tgid:9565  ppid:28     flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9568  tgid:9568  ppid:1114   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:kworker/u8:9    state:R  running task     stack:28784 pid:9576  tgid:9576  ppid:1148   flags:0x00004000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6861
>  __cond_resched+0x1b/0x30 kernel/sched/core.c:7199
>  _cond_resched include/linux/sched.h:2031 [inline]
>  stop_one_cpu+0x112/0x190 kernel/stop_machine.c:151
>  sched_exec+0x1dc/0x270 kernel/sched/core.c:5453
>  bprm_execve fs/exec.c:1838 [inline]
>  bprm_execve+0x46c/0x1950 fs/exec.c:1821
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9585  tgid:9585  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9599  tgid:9599  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9608  tgid:9608  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f51cee31a90
> RSP: 002b:00007ffd78235dd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f51cef22860 RCX: 00007f51cee31a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f51cef22860 R08: 0000000000000001 R09: d9f10af76f91c837
> R10: 00007ffd78235c90 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f51cef26658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24416 pid:9615  tgid:9615  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7febdbac2a90
> RSP: 002b:00007ffdc4cdeff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007febdbbb3860 RCX: 00007febdbac2a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007febdbbb3860 R08: 0000000000000001 R09: 9c513921461b8e44
> R10: 00007ffdc4cdeeb0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007febdbbb7658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9621  tgid:9621  ppid:11     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f439b8b7a90
> RSP: 002b:00007fffe0ac2d68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f439b9a8860 RCX: 00007f439b8b7a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f439b9a8860 R08: 0000000000000001 R09: ff9d4db23f41e35a
> R10: 00007fffe0ac2c20 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f439b9ac658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:D stack:25424 pid:9627  tgid:9627  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9640  tgid:9640  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:24416 pid:9649  tgid:9649  ppid:11     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f9ff0b0ba90
> RSP: 002b:00007ffcc7ed1848 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f9ff0bfc860 RCX: 00007f9ff0b0ba90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f9ff0bfc860 R08: 0000000000000001 R09: 53b7f4bb0ff00e10
> R10: 00007ffcc7ed1700 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f9ff0c00658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9656  tgid:9656  ppid:1114   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  __pfx___lock_acquire+0x10/0x10 kernel/locking/lockdep.c:4387
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9664  tgid:9664  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f260c278a90
> RSP: 002b:00007ffca8cbcb18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f260c369860 RCX: 00007f260c278a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f260c369860 R08: 0000000000000001 R09: ec1b067fce940b65
> R10: 00007ffca8cbc9d0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f260c36d658 R15: 0000000000000001
>  </TASK>
> task:kworker/u8:0    state:R  running task     stack:32568 pid:9671  tgid:9671  ppid:11     flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9672  tgid:9672  ppid:1114   flags:0x00004002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f395cc9ea90
> RSP: 002b:00007ffff1d03df8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f395cd8f860 RCX: 00007f395cc9ea90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f395cd8f860 R08: 0000000000000001 R09: 0c83ee7b55e5651c
> R10: 00007ffff1d03cb0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f395cd93658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:9678  tgid:9678  ppid:28     flags:0x00004002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f4fb9369a90
> RSP: 002b:00007ffde76a6918 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f4fb945a860 RCX: 00007f4fb9369a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f4fb945a860 R08: 0000000000000001 R09: 56a7058e5d32bb87
> R10: 00007ffde76a67d0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f4fb945e658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9684  tgid:9684  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9694  tgid:9694  ppid:28     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f306776fa90
> RSP: 002b:00007ffe0ff593a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f3067860860 RCX: 00007f306776fa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f3067860860 R08: 0000000000000001 R09: 7fe3f123c3d90a52
> R10: 00007ffe0ff59260 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f3067864658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:9701  tgid:9701  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:25344 pid:9710  tgid:9710  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:24000 pid:9714  tgid:9714  ppid:1114   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fe83ca73a90
> RSP: 002b:00007fff91de4128 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fe83cb64860 RCX: 00007fe83ca73a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fe83cb64860 R08: 0000000000000001 R09: 0380a4352b815b7d
> R10: 00007fff91de3fe0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fe83cb68658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9719  tgid:9719  ppid:28     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9726  tgid:9726  ppid:28     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9734  tgid:9734  ppid:28     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f880ede0a90
> RSP: 002b:00007ffca15eb9f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f880eed1860 RCX: 00007f880ede0a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f880eed1860 R08: 0000000000000001 R09: 6855b1290ac23e74
> R10: 00007ffca15eb8b0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f880eed5658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:9737  tgid:9737  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fd1ff7caa90
> RSP: 002b:00007fff7f497088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fd1ff8bb860 RCX: 00007fd1ff7caa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fd1ff8bb860 R08: 0000000000000001 R09: 93c7e6092e4e8d94
> R10: 00007fff7f496f40 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fd1ff8bf658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9741  tgid:9741  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f3b768dca90
> RSP: 002b:00007ffed6373f08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f3b769cd860 RCX: 00007f3b768dca90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f3b769cd860 R08: 0000000000000001 R09: cbb88f32d31ba940
> R10: 00007ffed6373dc0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f3b769d1658 R15: 0000000000000001
>  </TASK>
> task:kworker/u8:1    state:R  running task     stack:32568 pid:9750  tgid:9750  ppid:28     flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9752  tgid:9752  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:kworker/u8:7    state:R  running task     stack:32568 pid:9755  tgid:9755  ppid:1114   flags:0x00004000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9760  tgid:9760  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:kworker/u8:1    state:R  running task     stack:32568 pid:9762  tgid:9762  ppid:28     flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9766  tgid:9766  ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9772  tgid:9772  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f42d3bdba90
> RSP: 002b:00007fffe30e2e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f42d3ccc860 RCX: 00007f42d3bdba90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f42d3ccc860 R08: 0000000000000001 R09: 4e69d63dc7a7fcc0
> R10: 00007fffe30e2cc0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f42d3cd0658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9778  tgid:9778  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9786  tgid:9786  ppid:11     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9796  tgid:9796  ppid:1114   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f68f99e1a90
> RSP: 002b:00007ffe63673f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f68f9ad2860 RCX: 00007f68f99e1a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f68f9ad2860 R08: 0000000000000001 R09: f47c3fb77550af2e
> R10: 00007ffe63673e10 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f68f9ad6658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9801  tgid:9801  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fb781c83a90
> RSP: 002b:00007ffd60d9ea28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fb781d74860 RCX: 00007fb781c83a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fb781d74860 R08: 0000000000000001 R09: 215fd20ce0e6152e
> R10: 00007ffd60d9e8e0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fb781d78658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9809  tgid:9809  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:24000 pid:9818  tgid:9818  ppid:11     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f9722143a90
> RSP: 002b:00007ffe05d6de28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f9722234860 RCX: 00007f9722143a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f9722234860 R08: 0000000000000001 R09: 6b4b8080cd93a00c
> R10: 00007ffe05d6dce0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f9722238658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:9825  tgid:9825  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9835  tgid:9835  ppid:11     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9845  tgid:9845  ppid:1114   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fdda0a27a90
> RSP: 002b:00007ffe05bd09d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fdda0b18860 RCX: 00007fdda0a27a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fdda0b18860 R08: 0000000000000001 R09: ff36ed7236d48a13
> R10: 00007ffe05bd0890 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fdda0b1c658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24000 pid:9851  tgid:9851  ppid:11     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fe833113a90
> RSP: 002b:00007fff2a01fc28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fe833204860 RCX: 00007fe833113a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fe833204860 R08: 0000000000000001 R09: 35ed84c02d71e9d4
> R10: 00007fff2a01fae0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fe833208658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9857  tgid:9857  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f3964397a90
> RSP: 002b:00007ffd9166d4b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f3964488860 RCX: 00007f3964397a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f3964488860 R08: 0000000000000001 R09: 8f528e78319cc9bc
> R10: 00007ffd9166d370 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f396448c658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9865  tgid:9865  ppid:11     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:25344 pid:9874  tgid:9874  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7ff415499a90
> RSP: 002b:00007ffc31aa1ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007ff41558a860 RCX: 00007ff415499a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007ff41558a860 R08: 0000000000000001 R09: bec4dee6b5bd8695
> R10: 00007ffc31aa1d90 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007ff41558e658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9880  tgid:9880  ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9882  tgid:9882  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f6775f63a90
> RSP: 002b:00007ffc48cbf6e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f6776054860 RCX: 00007f6775f63a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f6776054860 R08: 0000000000000001 R09: 2978e367673e3d81
> R10: 00007ffc48cbf5a0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f6776058658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:9888  tgid:9888  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fa6ea053a90
> RSP: 002b:00007ffca5ca66d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fa6ea144860 RCX: 00007fa6ea053a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fa6ea144860 R08: 0000000000000001 R09: e7a3475f3e0f6286
> R10: 00007ffca5ca6590 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fa6ea148658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24000 pid:9895  tgid:9895  ppid:1148   flags:0x00004002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7ff086b4da90
> RSP: 002b:00007ffc358ac5f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007ff086c3e860 RCX: 00007ff086b4da90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007ff086c3e860 R08: 0000000000000001 R09: 29caad31773cb941
> R10: 00007ffc358ac4b0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007ff086c42658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9901  tgid:9901  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9911  tgid:9911  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>
>
> Tested on:
>
> commit:         80bf308c mm/mglru: only clear kswapd_failures if recla..
> git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable
> console output: https://syzkaller.appspot.com/x/log.txt?x=1600445f980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=9878fe11046ea2c6
> dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
> compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
>
> Note: no patches were applied.

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file
  2024-10-16  7:06     ` Lorenzo Stoakes
@ 2024-10-16  7:14       ` Greg Kroah-Hartman
  2024-10-16  8:30         ` Tetsuo Handa
  0 siblings, 1 reply; 9+ messages in thread
From: Greg Kroah-Hartman @ 2024-10-16  7:14 UTC (permalink / raw)
  To: Lorenzo Stoakes
  Cc: syzbot, akpm, liam.howlett, linux-input, linux-kernel, linux-mm,
	linux-usb, syzkaller-bugs, vbabka, Marcello Sylvester Bauer,
	Jiri Kosina, Benjamin Tissoires

On Wed, Oct 16, 2024 at 08:06:20AM +0100, Lorenzo Stoakes wrote:
> + some people from USB/HID subsystem.
> 
> This is really not looking mm-related, as for a second time we've asked
> syzbot to re-run and for a second time it's not hit any mm-specific code -
> I think this is misattributed - could somebody from the USB/HID side take a
> look?
> 
> It looks to be something that isn't reproduced by a specific C program but
> by a syzkaller USB configuration [0]?

There's a lot of odd usb syzbot issues right now dealing with the dummy
hcd controller, so maybe this is another one of them...

thanks,

greg k-h

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file
  2024-10-16  7:14       ` Greg Kroah-Hartman
@ 2024-10-16  8:30         ` Tetsuo Handa
  0 siblings, 0 replies; 9+ messages in thread
From: Tetsuo Handa @ 2024-10-16  8:30 UTC (permalink / raw)
  To: Greg Kroah-Hartman, Lorenzo Stoakes
  Cc: syzbot, akpm, liam.howlett, linux-input, linux-kernel, linux-mm,
	linux-usb, syzkaller-bugs, vbabka, Marcello Sylvester Bauer,
	Jiri Kosina, Benjamin Tissoires

On 2024/10/16 16:14, Greg Kroah-Hartman wrote:
> On Wed, Oct 16, 2024 at 08:06:20AM +0100, Lorenzo Stoakes wrote:
>> + some people from USB/HID subsystem.
>>
>> This is really not looking mm-related, as for a second time we've asked
>> syzbot to re-run and for a second time it's not hit any mm-specific code -
>> I think this is misattributed - could somebody from the USB/HID side take a
>> look?
>>
>> It looks to be something that isn't reproduced by a specific C program but
>> by a syzkaller USB configuration [0]?
> 
> There's a lot of odd usb syzbot issues right now dealing with the dummy
> hcd controller, so maybe this is another one of them...

This is a printk() flooding stall triggered by SysRq-t.

 sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7557
 show_state_filter+0xee/0x320 kernel/sched/core.c:7627
 k_spec drivers/tty/vt/keyboard.c:667 [inline]
 k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
 kbd_keycode drivers/tty/vt/keyboard.c:1522 [inline]
 kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541


^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2024-10-16  8:30 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-10-14 15:02 [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file syzbot
2024-10-15  8:44 ` Lorenzo Stoakes
2024-10-15 10:32   ` syzbot
2024-10-15 10:43     ` Lorenzo Stoakes
2024-10-15 20:05 ` Liam R. Howlett
2024-10-15 20:27   ` syzbot
2024-10-16  7:06     ` Lorenzo Stoakes
2024-10-16  7:14       ` Greg Kroah-Hartman
2024-10-16  8:30         ` Tetsuo Handa

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