* [syzbot] [jfs?] INFO: task hung in deactivate_super (2)
@ 2023-03-30 1:56 syzbot
2024-01-04 11:28 ` [syzbot] [reiserfs?] " syzbot
2024-04-02 12:53 ` syzbot
0 siblings, 2 replies; 4+ messages in thread
From: syzbot @ 2023-03-30 1:56 UTC (permalink / raw)
To: jfs-discussion, linux-fsdevel, linux-kernel, shaggy,
syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 4bdec23f971b Merge tag 'hwmon-for-v6.3-rc4' of git://git.k..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=17c90be5c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=acdb62bf488a8fe5
dashboard link: https://syzkaller.appspot.com/bug?extid=aa7397130ec6a8c2e2d9
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/a5040aa82cfc/disk-4bdec23f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/e72022149541/vmlinux-4bdec23f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ea0702be72a9/bzImage-4bdec23f.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+aa7397130ec6a8c2e2d9@syzkaller.appspotmail.com
INFO: task syz-executor.2:5116 blocked for more than 143 seconds.
Not tainted 6.3.0-rc3-syzkaller-00322-g4bdec23f971b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:20992 pid:5116 ppid:1 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
deactivate_super+0xad/0xf0 fs/super.c:361
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177
task_work_run+0x24a/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f226468d567
RSP: 002b:00007ffc2a9420b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f226468d567
RDX: 00007ffc2a94218b RSI: 000000000000000a RDI: 00007ffc2a942180
RBP: 00007ffc2a942180 R08: 00000000ffffffff R09: 00007ffc2a941f50
R10: 0000555555bcc8b3 R11: 0000000000000246 R12: 00007f22646e6b74
R13: 00007ffc2a943240 R14: 0000555555bcc810 R15: 00007ffc2a943280
</TASK>
INFO: task syz-executor.3:17448 blocked for more than 143 seconds.
Not tainted 6.3.0-rc3-syzkaller-00322-g4bdec23f971b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24872 pid:17448 ppid:5104 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
jfs_flush_journal+0x733/0xec0 fs/jfs/jfs_logmgr.c:1564
jfs_sync_fs+0x80/0xa0 fs/jfs/super.c:684
iterate_supers+0x12b/0x1e0 fs/super.c:745
ksys_sync+0xdb/0x1c0 fs/sync.c:104
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f00b0c8c0f9
RSP: 002b:00007f00af7fe168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f00b0dabf80 RCX: 00007f00b0c8c0f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f00b0ce7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff50002ebf R14: 00007f00af7fe300 R15: 0000000000022000
</TASK>
INFO: task syz-executor.4:17450 blocked for more than 144 seconds.
Not tainted 6.3.0-rc3-syzkaller-00322-g4bdec23f971b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24728 pid:17450 ppid:5110 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
rwsem_down_read_slowpath+0x5f4/0x950 kernel/locking/rwsem.c:1086
__down_read_common+0x61/0x2c0 kernel/locking/rwsem.c:1250
iterate_supers+0xb0/0x1e0 fs/super.c:743
ksys_sync+0xbd/0x1c0 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f030608c0f9
RSP: 002b:00007f0306d49168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f03061abf80 RCX: 00007f030608c0f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f03060e7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd20fdb81f R14: 00007f0306d49300 R15: 0000000000022000
</TASK>
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf255f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf25df0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8cf25420 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4750:
#0: ffff888028196098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.2/5116:
#0: ffff88803e8e60e0 (&type->s_umount_key#79){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361
1 lock held by syz-executor.3/17448:
#0: ffff88803e8e60e0 (&type->s_umount_key#79){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743
1 lock held by syz-executor.4/17450:
#0: ffff88803e8e60e0 (&type->s_umount_key#79){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743
1 lock held by syz-executor.4/17517:
#0: ffff88803e8e60e0 (&type->s_umount_key#79){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc3-syzkaller-00322-g4bdec23f971b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 6.3.0-rc3-syzkaller-00322-g4bdec23f971b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline]
RIP: 0010:do_raw_spin_lock+0x83/0x3a0 kernel/locking/spinlock_debug.c:114
Code: 40 48 c1 ee 03 48 b8 f1 f1 f1 f1 04 f3 f3 f3 48 89 f1 48 89 74 24 38 48 89 04 16 48 8d 5f 04 48 89 d8 48 c1 e8 03 0f b6 04 10 <84> c0 0f 85 1c 02 00 00 8b 03 3d ad 4e ad de 0f 85 5c 01 00 00 49
RSP: 0018:ffffc900000e7a80 EFLAGS: 00000a07
RAX: 0000000000000000 RBX: ffff88803a8f5f84 RCX: 1ffff9200001cf58
RDX: dffffc0000000000 RSI: 1ffff9200001cf58 RDI: ffff88803a8f5f80
RBP: ffffc900000e7b50 R08: dffffc0000000000 R09: fffffbfff205be54
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88803a8f5f80
R13: dffffc0000000000 R14: ffff8880205d6d00 R15: ffff8880205d6d10
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561274c7f150 CR3: 000000000cd30000 CR4: 00000000003506f0
DR0: 00000000ffff070c DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
spin_lock_bh include/linux/spinlock.h:355 [inline]
batadv_nc_purge_paths+0xe8/0x3a0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x30f/0x5c0 net/batman-adv/network-coding.c:722
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2390
worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</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.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] [reiserfs?] INFO: task hung in deactivate_super (2)
2023-03-30 1:56 [syzbot] [jfs?] INFO: task hung in deactivate_super (2) syzbot
@ 2024-01-04 11:28 ` syzbot
2024-01-05 2:21 ` Hillf Danton
2024-04-02 12:53 ` syzbot
1 sibling, 1 reply; 4+ messages in thread
From: syzbot @ 2024-01-04 11:28 UTC (permalink / raw)
To: jack, jfs-discussion, linux-fsdevel, linux-kernel, reiserfs-devel,
shaggy, syzkaller-bugs
syzbot has found a reproducer for the following issue on:
HEAD commit: ac865f00af29 Merge tag 'pci-v6.7-fixes-2' of git://git.ker..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=11f14c55e80000
kernel config: https://syzkaller.appspot.com/x/.config?x=655f8abe9fe69b3b
dashboard link: https://syzkaller.appspot.com/bug?extid=aa7397130ec6a8c2e2d9
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1669644de80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=137d7db5e80000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/9a1f24b8b8e9/disk-ac865f00.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b09904d69477/vmlinux-ac865f00.xz
kernel image: https://storage.googleapis.com/syzbot-assets/8130ed70d938/bzImage-ac865f00.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/ea2e844115b1/mount_1.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+aa7397130ec6a8c2e2d9@syzkaller.appspotmail.com
INFO: task syz-executor393:5056 blocked for more than 143 seconds.
Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor393 state:D stack:25016 pid:5056 tgid:5056 ppid:5055 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
__super_lock fs/super.c:56 [inline]
__super_lock_excl fs/super.c:71 [inline]
deactivate_super+0xad/0xf0 fs/super.c:516
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1256
task_work_run+0x24a/0x300 kernel/task_work.c:180
ptrace_notify+0x2cd/0x380 kernel/signal.c:2399
ptrace_report_syscall include/linux/ptrace.h:411 [inline]
ptrace_report_syscall_exit include/linux/ptrace.h:473 [inline]
syscall_exit_work kernel/entry/common.c:251 [inline]
syscall_exit_to_user_mode_prepare kernel/entry/common.c:278 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x168/0x2a0 kernel/entry/common.c:296
do_syscall_64+0x52/0x110 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f4ae237a577
RSP: 002b:00007fffedd426b8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 000000000000daf5 RCX: 00007f4ae237a577
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fffedd42770
RBP: 00007fffedd42770 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000206 R12: 00007fffedd437e0
R13: 000055555600b6c0 R14: 431bde82d7b634db R15: 00007fffedd43800
</TASK>
INFO: task syz-executor393:5082 blocked for more than 143 seconds.
Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor393 state:D stack:27056 pid:5082 tgid:5082 ppid:5059 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x176/0x3a0 fs/super.c:117
super_lock_shared fs/super.c:146 [inline]
iterate_supers+0x8c/0x180 fs/super.c:969
quota_sync_all fs/quota/quota.c:69 [inline]
__do_sys_quotactl fs/quota/quota.c:938 [inline]
__se_sys_quotactl+0x391/0xa30 fs/quota/quota.c:917
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f4ae2379319
RSP: 002b:00007fffedd437a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4ae2379319
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffedd437e0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffedd437cc
R13: 0000000000000001 R14: 431bde82d7b634db R15: 00007fffedd43800
</TASK>
INFO: task syz-executor393:5083 blocked for more than 143 seconds.
Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor393 state:D stack:26736 pid:5083 tgid:5083 ppid:5060 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x176/0x3a0 fs/super.c:117
super_lock_shared fs/super.c:146 [inline]
iterate_supers+0x8c/0x180 fs/super.c:969
quota_sync_all fs/quota/quota.c:69 [inline]
__do_sys_quotactl fs/quota/quota.c:938 [inline]
__se_sys_quotactl+0x391/0xa30 fs/quota/quota.c:917
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f4ae2379319
RSP: 002b:00007fffedd437a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4ae2379319
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffedd437e0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffedd437cc
R13: 0000000000000001 R14: 431bde82d7b634db R15: 00007fffedd43800
</TASK>
INFO: task syz-executor393:5084 blocked for more than 144 seconds.
Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor393 state:D stack:27056 pid:5084 tgid:5084 ppid:5061 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x176/0x3a0 fs/super.c:117
super_lock_shared fs/super.c:146 [inline]
iterate_supers+0x8c/0x180 fs/super.c:969
quota_sync_all fs/quota/quota.c:69 [inline]
__do_sys_quotactl fs/quota/quota.c:938 [inline]
__se_sys_quotactl+0x391/0xa30 fs/quota/quota.c:917
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f4ae2379319
RSP: 002b:00007fffedd437a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4ae2379319
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffedd437e0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffedd437cc
R13: 0000000000000001 R14: 431bde82d7b634db R15: 00007fffedd43800
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4808:
#0: ffff88802667c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor393/5056:
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:516
4 locks held by syz-executor393/5078:
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
#1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:813 [inline]
#1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: lock_journal fs/reiserfs/journal.c:533 [inline]
#1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x352/0x1030 fs/reiserfs/journal.c:3047
#2: ffff8880b993c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#3: ffff8880b993c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
2 locks held by syz-executor393/5079:
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
#1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:813 [inline]
#1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: lock_journal fs/reiserfs/journal.c:533 [inline]
#1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x352/0x1030 fs/reiserfs/journal.c:3047
1 lock held by syz-executor393/5082:
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
1 lock held by syz-executor393/5083:
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
1 lock held by syz-executor393/5084:
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5078 Comm: syz-executor393 Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:kasan_check_range+0x7/0x290 mm/kasan/generic.c:186
Code: 84 47 ff ff ff 48 ff c8 48 39 d8 0f 84 3b ff ff ff 48 89 df 48 c7 c6 02 91 12 8d e8 83 0a e7 ff 90 0f 0b 66 0f 1f 00 55 41 57 <41> 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39
RSP: 0018:ffffc90003a5e838 EFLAGS: 00000046
RAX: 0000000000000002 RBX: 00000000000000a5 RCX: ffffffff816d37ac
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90dd9370
RBP: ffff88802451c780 R08: ffffffff90dd9377 R09: 1ffffffff21bb26e
R10: dffffc0000000000 R11: fffffbfff21bb26f R12: 0000000000000001
R13: ffff88802451bb80 R14: 1ffff110048a38f4 R15: ffff88802451c7a0
FS: 000055555600a380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f934ceb7580 CR3: 0000000023d95000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<TASK>
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
__lock_acquire+0xc5c/0x1fd0 kernel/locking/lockdep.c:5107
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
do_write_seqcount_begin_nested include/linux/seqlock.h:525 [inline]
do_write_seqcount_begin include/linux/seqlock.h:551 [inline]
psi_group_change+0x113/0x12d0 kernel/sched/psi.c:787
psi_task_change+0xfd/0x280 kernel/sched/psi.c:912
psi_enqueue kernel/sched/stats.h:139 [inline]
enqueue_task+0x29c/0x2f0 kernel/sched/core.c:2091
activate_task kernel/sched/core.c:2125 [inline]
ttwu_do_activate+0x1d7/0x760 kernel/sched/core.c:3770
ttwu_queue kernel/sched/core.c:4021 [inline]
try_to_wake_up+0x86d/0x1440 kernel/sched/core.c:4342
kick_pool+0x2f4/0x3d0 kernel/workqueue.c:1142
__queue_work+0xbfc/0x1000 kernel/workqueue.c:1797
mod_delayed_work_on+0x105/0x250 kernel/workqueue.c:2021
kblockd_mod_delayed_work_on+0x29/0x40 block/blk-core.c:1046
blk_insert_flush+0x3cb/0x4e0 block/blk-flush.c:456
blk_mq_submit_bio+0xff6/0x2140 block/blk-mq.c:3004
__submit_bio+0x239/0x2e0 block/blk-core.c:607
__submit_bio_noacct_mq block/blk-core.c:686 [inline]
submit_bio_noacct_nocheck+0x91d/0xc70 block/blk-core.c:715
submit_bh fs/buffer.c:2826 [inline]
__sync_dirty_buffer+0x23b/0x390 fs/buffer.c:2864
_update_journal_header_block+0x401/0x540 fs/reiserfs/journal.c:1270
update_journal_header_block fs/reiserfs/journal.c:1289 [inline]
flush_journal_list+0x106f/0x1c80 fs/reiserfs/journal.c:1589
flush_used_journal_lists+0x1256/0x15d0 fs/reiserfs/journal.c:1828
do_journal_end+0x3d51/0x4b40
do_journal_begin_r+0x970/0x1030
journal_begin+0x14c/0x360 fs/reiserfs/journal.c:3254
reiserfs_sync_fs+0xb0/0x150 fs/reiserfs/super.c:77
dquot_quota_sync+0xdb/0x490 fs/quota/dquot.c:753
iterate_supers+0xc2/0x180 fs/super.c:971
quota_sync_all fs/quota/quota.c:69 [inline]
__do_sys_quotactl fs/quota/quota.c:938 [inline]
__se_sys_quotactl+0x391/0xa30 fs/quota/quota.c:917
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f4ae2379319
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffedd437a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4ae2379319
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffedd437e0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffedd437cc
R13: 0000000000000001 R14: 431bde82d7b634db R15: 00007fffedd43800
</TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.090 msecs
---
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.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] [reiserfs?] INFO: task hung in deactivate_super (2)
2024-01-04 11:28 ` [syzbot] [reiserfs?] " syzbot
@ 2024-01-05 2:21 ` Hillf Danton
0 siblings, 0 replies; 4+ messages in thread
From: Hillf Danton @ 2024-01-05 2:21 UTC (permalink / raw)
To: syzbot
Cc: Tetsuo Handa, Dmitry Vyukov, Boqun Feng, Linus Torvalds,
linux-fsdevel, linux-kernel, syzkaller-bugs
On Thu, 04 Jan 2024 03:28:28 -0800
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: ac865f00af29 Merge tag 'pci-v6.7-fixes-2' of git://git.ker..
> git tree: upstream
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=11f14c55e80000
> kernel config: https://syzkaller.appspot.com/x/.config?x=655f8abe9fe69b3b
> dashboard link: https://syzkaller.appspot.com/bug?extid=aa7397130ec6a8c2e2d9
> compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1669644de80000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=137d7db5e80000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/9a1f24b8b8e9/disk-ac865f00.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/b09904d69477/vmlinux-ac865f00.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/8130ed70d938/bzImage-ac865f00.xz
> mounted in repro: https://storage.googleapis.com/syzbot-assets/ea2e844115b1/mount_1.gz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+aa7397130ec6a8c2e2d9@syzkaller.appspotmail.com
>
> INFO: task syz-executor393:5056 blocked for more than 143 seconds.
> Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:syz-executor393 state:D stack:25016 pid:5056 tgid:5056 ppid:5055 flags:0x00004002
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5376 [inline]
> __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
> __schedule_loop kernel/sched/core.c:6763 [inline]
> schedule+0x149/0x260 kernel/sched/core.c:6778
> schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
> rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
> __down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
> __super_lock fs/super.c:56 [inline]
> __super_lock_excl fs/super.c:71 [inline]
> deactivate_super+0xad/0xf0 fs/super.c:516
> cleanup_mnt+0x426/0x4c0 fs/namespace.c:1256
> task_work_run+0x24a/0x300 kernel/task_work.c:180
> ptrace_notify+0x2cd/0x380 kernel/signal.c:2399
> ptrace_report_syscall include/linux/ptrace.h:411 [inline]
> ptrace_report_syscall_exit include/linux/ptrace.h:473 [inline]
> syscall_exit_work kernel/entry/common.c:251 [inline]
> syscall_exit_to_user_mode_prepare kernel/entry/common.c:278 [inline]
> __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
> syscall_exit_to_user_mode+0x168/0x2a0 kernel/entry/common.c:296
> do_syscall_64+0x52/0x110 arch/x86/entry/common.c:89
> entry_SYSCALL_64_after_hwframe+0x63/0x6b
> RIP: 0033:0x7f4ae237a577
> RSP: 002b:00007fffedd426b8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
> RAX: 0000000000000000 RBX: 000000000000daf5 RCX: 00007f4ae237a577
> RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fffedd42770
> RBP: 00007fffedd42770 R08: 0000000000000000 R09: 0000000000000000
> R10: 00000000ffffffff R11: 0000000000000206 R12: 00007fffedd437e0
> R13: 000055555600b6c0 R14: 431bde82d7b634db R15: 00007fffedd43800
> </TASK>
> INFO: task syz-executor393:5082 blocked for more than 143 seconds.
> Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:syz-executor393 state:D stack:27056 pid:5082 tgid:5082 ppid:5059 flags:0x00004006
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5376 [inline]
> __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
> __schedule_loop kernel/sched/core.c:6763 [inline]
> schedule+0x149/0x260 kernel/sched/core.c:6778
> schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
> rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
> __down_read_common kernel/locking/rwsem.c:1250 [inline]
> __down_read kernel/locking/rwsem.c:1263 [inline]
> down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
> __super_lock fs/super.c:58 [inline]
> super_lock+0x176/0x3a0 fs/super.c:117
> super_lock_shared fs/super.c:146 [inline]
> iterate_supers+0x8c/0x180 fs/super.c:969
> quota_sync_all fs/quota/quota.c:69 [inline]
> __do_sys_quotactl fs/quota/quota.c:938 [inline]
> __se_sys_quotactl+0x391/0xa30 fs/quota/quota.c:917
> do_syscall_x64 arch/x86/entry/common.c:52 [inline]
> do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
> entry_SYSCALL_64_after_hwframe+0x63/0x6b
> RIP: 0033:0x7f4ae2379319
> RSP: 002b:00007fffedd437a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
> RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4ae2379319
> RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
> RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffedd437e0
> R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffedd437cc
> R13: 0000000000000001 R14: 431bde82d7b634db R15: 00007fffedd43800
> </TASK>
> INFO: task syz-executor393:5083 blocked for more than 143 seconds.
> Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:syz-executor393 state:D stack:26736 pid:5083 tgid:5083 ppid:5060 flags:0x00004006
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5376 [inline]
> __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
> __schedule_loop kernel/sched/core.c:6763 [inline]
> schedule+0x149/0x260 kernel/sched/core.c:6778
> schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
> rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
> __down_read_common kernel/locking/rwsem.c:1250 [inline]
> __down_read kernel/locking/rwsem.c:1263 [inline]
> down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
> __super_lock fs/super.c:58 [inline]
> super_lock+0x176/0x3a0 fs/super.c:117
> super_lock_shared fs/super.c:146 [inline]
> iterate_supers+0x8c/0x180 fs/super.c:969
> quota_sync_all fs/quota/quota.c:69 [inline]
> __do_sys_quotactl fs/quota/quota.c:938 [inline]
> __se_sys_quotactl+0x391/0xa30 fs/quota/quota.c:917
> do_syscall_x64 arch/x86/entry/common.c:52 [inline]
> do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
> entry_SYSCALL_64_after_hwframe+0x63/0x6b
> RIP: 0033:0x7f4ae2379319
> RSP: 002b:00007fffedd437a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
> RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4ae2379319
> RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
> RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffedd437e0
> R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffedd437cc
> R13: 0000000000000001 R14: 431bde82d7b634db R15: 00007fffedd43800
> </TASK>
> INFO: task syz-executor393:5084 blocked for more than 144 seconds.
> Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:syz-executor393 state:D stack:27056 pid:5084 tgid:5084 ppid:5061 flags:0x00004006
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5376 [inline]
> __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
> __schedule_loop kernel/sched/core.c:6763 [inline]
> schedule+0x149/0x260 kernel/sched/core.c:6778
> schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
> rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
> __down_read_common kernel/locking/rwsem.c:1250 [inline]
> __down_read kernel/locking/rwsem.c:1263 [inline]
> down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
> __super_lock fs/super.c:58 [inline]
> super_lock+0x176/0x3a0 fs/super.c:117
> super_lock_shared fs/super.c:146 [inline]
> iterate_supers+0x8c/0x180 fs/super.c:969
> quota_sync_all fs/quota/quota.c:69 [inline]
> __do_sys_quotactl fs/quota/quota.c:938 [inline]
> __se_sys_quotactl+0x391/0xa30 fs/quota/quota.c:917
> do_syscall_x64 arch/x86/entry/common.c:52 [inline]
> do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
> entry_SYSCALL_64_after_hwframe+0x63/0x6b
> RIP: 0033:0x7f4ae2379319
> RSP: 002b:00007fffedd437a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
> RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4ae2379319
> RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
> RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffedd437e0
> R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffedd437cc
> R13: 0000000000000001 R14: 431bde82d7b634db R15: 00007fffedd43800
> </TASK>
>
> Showing all locks held in the system:
> 1 lock held by khungtaskd/29:
> #0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
> #0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
> #0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
> 2 locks held by getty/4808:
> #0: ffff88802667c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
> #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
> 1 lock held by syz-executor393/5056:
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:516
> 4 locks held by syz-executor393/5078:
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
> #1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:813 [inline]
> #1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: lock_journal fs/reiserfs/journal.c:533 [inline]
> #1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x352/0x1030 fs/reiserfs/journal.c:3047
> #2: ffff8880b993c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
> #3: ffff8880b993c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
Lockdep failed to detect deadlock, any thing special in this report,
kasan people?
> 2 locks held by syz-executor393/5079:
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
> #1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:813 [inline]
> #1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: lock_journal fs/reiserfs/journal.c:533 [inline]
> #1: ffffc90003b890f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x352/0x1030 fs/reiserfs/journal.c:3047
> 1 lock held by syz-executor393/5082:
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
> 1 lock held by syz-executor393/5083:
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
> 1 lock held by syz-executor393/5084:
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
> #0: ffff888029d1e0e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
>
> =============================================
>
> NMI backtrace for cpu 0
> CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
> Call Trace:
> <TASK>
> __dump_stack lib/dump_stack.c:88 [inline]
> dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
> nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
> nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
> trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
> check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
> watchdog+0xfaf/0xff0 kernel/hung_task.c:379
> kthread+0x2d3/0x370 kernel/kthread.c:388
> ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
> ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
> </TASK>
> Sending NMI from CPU 0 to CPUs 1:
> NMI backtrace for cpu 1
> CPU: 1 PID: 5078 Comm: syz-executor393 Not tainted 6.7.0-rc8-syzkaller-00024-gac865f00af29 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
> RIP: 0010:kasan_check_range+0x7/0x290 mm/kasan/generic.c:186
> Code: 84 47 ff ff ff 48 ff c8 48 39 d8 0f 84 3b ff ff ff 48 89 df 48 c7 c6 02 91 12 8d e8 83 0a e7 ff 90 0f 0b 66 0f 1f 00 55 41 57 <41> 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39
> RSP: 0018:ffffc90003a5e838 EFLAGS: 00000046
> RAX: 0000000000000002 RBX: 00000000000000a5 RCX: ffffffff816d37ac
> RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90dd9370
> RBP: ffff88802451c780 R08: ffffffff90dd9377 R09: 1ffffffff21bb26e
> R10: dffffc0000000000 R11: fffffbfff21bb26f R12: 0000000000000001
> R13: ffff88802451bb80 R14: 1ffff110048a38f4 R15: ffff88802451c7a0
> FS: 000055555600a380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007f934ceb7580 CR3: 0000000023d95000 CR4: 00000000003506f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
> <NMI>
> </NMI>
> <TASK>
> instrument_atomic_read include/linux/instrumented.h:68 [inline]
> _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
> __lock_acquire+0xc5c/0x1fd0 kernel/locking/lockdep.c:5107
> lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
> do_write_seqcount_begin_nested include/linux/seqlock.h:525 [inline]
> do_write_seqcount_begin include/linux/seqlock.h:551 [inline]
> psi_group_change+0x113/0x12d0 kernel/sched/psi.c:787
> psi_task_change+0xfd/0x280 kernel/sched/psi.c:912
> psi_enqueue kernel/sched/stats.h:139 [inline]
> enqueue_task+0x29c/0x2f0 kernel/sched/core.c:2091
> activate_task kernel/sched/core.c:2125 [inline]
> ttwu_do_activate+0x1d7/0x760 kernel/sched/core.c:3770
> ttwu_queue kernel/sched/core.c:4021 [inline]
> try_to_wake_up+0x86d/0x1440 kernel/sched/core.c:4342
> kick_pool+0x2f4/0x3d0 kernel/workqueue.c:1142
> __queue_work+0xbfc/0x1000 kernel/workqueue.c:1797
> mod_delayed_work_on+0x105/0x250 kernel/workqueue.c:2021
> kblockd_mod_delayed_work_on+0x29/0x40 block/blk-core.c:1046
> blk_insert_flush+0x3cb/0x4e0 block/blk-flush.c:456
> blk_mq_submit_bio+0xff6/0x2140 block/blk-mq.c:3004
> __submit_bio+0x239/0x2e0 block/blk-core.c:607
> __submit_bio_noacct_mq block/blk-core.c:686 [inline]
> submit_bio_noacct_nocheck+0x91d/0xc70 block/blk-core.c:715
> submit_bh fs/buffer.c:2826 [inline]
> __sync_dirty_buffer+0x23b/0x390 fs/buffer.c:2864
> _update_journal_header_block+0x401/0x540 fs/reiserfs/journal.c:1270
> update_journal_header_block fs/reiserfs/journal.c:1289 [inline]
> flush_journal_list+0x106f/0x1c80 fs/reiserfs/journal.c:1589
> flush_used_journal_lists+0x1256/0x15d0 fs/reiserfs/journal.c:1828
> do_journal_end+0x3d51/0x4b40
> do_journal_begin_r+0x970/0x1030
> journal_begin+0x14c/0x360 fs/reiserfs/journal.c:3254
> reiserfs_sync_fs+0xb0/0x150 fs/reiserfs/super.c:77
> dquot_quota_sync+0xdb/0x490 fs/quota/dquot.c:753
> iterate_supers+0xc2/0x180 fs/super.c:971
> quota_sync_all fs/quota/quota.c:69 [inline]
> __do_sys_quotactl fs/quota/quota.c:938 [inline]
> __se_sys_quotactl+0x391/0xa30 fs/quota/quota.c:917
> do_syscall_x64 arch/x86/entry/common.c:52 [inline]
> do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
> entry_SYSCALL_64_after_hwframe+0x63/0x6b
> RIP: 0033:0x7f4ae2379319
> Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
> RSP: 002b:00007fffedd437a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
> RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4ae2379319
> RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
> RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffedd437e0
> R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffedd437cc
> R13: 0000000000000001 R14: 431bde82d7b634db R15: 00007fffedd43800
> </TASK>
> INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.090 msecs
>
>
> ---
> 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.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] [reiserfs?] INFO: task hung in deactivate_super (2)
2023-03-30 1:56 [syzbot] [jfs?] INFO: task hung in deactivate_super (2) syzbot
2024-01-04 11:28 ` [syzbot] [reiserfs?] " syzbot
@ 2024-04-02 12:53 ` syzbot
1 sibling, 0 replies; 4+ messages in thread
From: syzbot @ 2024-04-02 12:53 UTC (permalink / raw)
To: axboe, boqun.feng, brauner, dvyukov, hdanton, jack, jack,
jfs-discussion, linux-fsdevel, linux-kernel, penguin-kernel,
reiserfs-devel, shaggy, syzkaller-bugs, torvalds
syzbot suspects this issue was fixed by commit:
commit 6f861765464f43a71462d52026fbddfc858239a5
Author: Jan Kara <jack@suse.cz>
Date: Wed Nov 1 17:43:10 2023 +0000
fs: Block writes to mounted block devices
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16799ab5180000
start commit: ac865f00af29 Merge tag 'pci-v6.7-fixes-2' of git://git.ker..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=655f8abe9fe69b3b
dashboard link: https://syzkaller.appspot.com/bug?extid=aa7397130ec6a8c2e2d9
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1669644de80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=137d7db5e80000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: fs: Block writes to mounted block devices
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-04-02 12:53 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2023-03-30 1:56 [syzbot] [jfs?] INFO: task hung in deactivate_super (2) syzbot
2024-01-04 11:28 ` [syzbot] [reiserfs?] " syzbot
2024-01-05 2:21 ` Hillf Danton
2024-04-02 12:53 ` syzbot
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