* [syzbot] [kernel?] BUG: soft lockup in gate_timer_func
@ 2026-08-17 16:04 syzbot
0 siblings, 0 replies; only message in thread
From: syzbot @ 2026-08-17 16:04 UTC (permalink / raw)
To: linux-kernel, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 21d6ac051080 Merge branch 'for-next/core' into for-kernelci
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=10a50679580000
kernel config: https://syzkaller.appspot.com/x/.config?x=d1128bc53f2ef7f3
dashboard link: https://syzkaller.appspot.com/bug?extid=0054fed3dc9085390f51
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
userspace arch: arm64
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15911a25580000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+0054fed3dc9085390f51@syzkaller.appspotmail.com
watchdog: BUG: soft lockup - CPU#1 stuck for 3s! [syz-executor291:5020]
Modules linked in:
irq event stamp: 4562887
hardirqs last enabled at (4562886): [<ffff800080557c84>] seqcount_lockdep_reader_access+0x7c/0xf8 include/linux/seqlock.h:75
hardirqs last disabled at (4562887): [<ffff80008690b4b4>] __el1_irq arch/arm64/kernel/entry-common.c:527 [inline]
hardirqs last disabled at (4562887): [<ffff80008690b4b4>] el1_interrupt+0x28/0x60 arch/arm64/kernel/entry-common.c:543
softirqs last enabled at (14246): [<ffff800084c0e6c4>] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:698
softirqs last disabled at (14249): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
CPU: 1 UID: 0 PID: 5020 Comm: syz-executor291 Not tainted syzkaller #0 PREEMPT
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 43400005 (nZcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : seqcount_lockdep_reader_access+0xd8/0xf8 include/linux/seqlock.h:76
lr : seqcount_lockdep_reader_access+0xd4/0xf8 include/linux/seqlock.h:75
sp : ffff80008eb77ce0
x29: ffff80008eb77ce0 x28: 1fffe00034bbc63a x27: ffff80008e853110
x26: dfff800000000000 x25: ffff0000c1b62b80 x24: 1fffe0001ad59fa6
x23: dfff800000000000 x22: ffff0000c1b62bb0 x21: 0000000000000000
x20: ffff8000805580e8 x19: 00000000000000c0 x18: 0000000000000000
x17: ffff80008a7d6000 x16: 0000000000000002 x15: ffff80008a35fda0
x14: ffff80008a5d5e28 x13: 0000000000000001 x12: ffff0000d5af8000
x11: ffff80008a5d5e28 x10: 0000000000000003 x9 : 0000000000000101
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080557cd4
x2 : 0000000000000080 x1 : ffff0000d5af8000 x0 : 0000000000000000
Call trace:
__daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P)
arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P)
seqcount_lockdep_reader_access+0xd8/0xf8 include/linux/seqlock.h:75 (P)
ktime_get+0x68/0x218 kernel/time/timekeeping.c:971
gate_get_time+0x1c/0xa4 net/sched/act_gate.c:23
gate_timer_func+0x1a8/0x390 net/sched/act_gate.c:101
__run_hrtimer kernel/time/hrtimer.c:2032 [inline]
__hrtimer_run_queues+0x314/0xbe0 kernel/time/hrtimer.c:2096
hrtimer_run_softirq+0x15c/0x21c kernel/time/hrtimer.c:2113
handle_softirqs+0x2ec/0xd98 kernel/softirq.c:622
__do_softirq+0x14/0x20 kernel/softirq.c:656
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:885
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
invoke_softirq kernel/softirq.c:503 [inline]
__irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735
irq_exit_rcu+0x14/0x84 kernel/softirq.c:752
__el1_irq arch/arm64/kernel/entry-common.c:531 [inline]
el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:543
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:548
el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:586
__daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P)
arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P)
__local_bh_enable_ip+0x1f0/0x35c kernel/softirq.c:455 (P)
local_bh_enable include/linux/bottom_half.h:33 [inline]
__alloc_skb+0x1c8/0x610 net/core/skbuff.c:699
alloc_skb include/linux/skbuff.h:1384 [inline]
alloc_skb_with_frags+0xb8/0x690 net/core/skbuff.c:6775
sock_alloc_send_pskb+0x740/0x850 net/core/sock.c:3012
unix_dgram_sendmsg+0x434/0x1078 net/unix/af_unix.c:2137
sock_sendmsg_nosec net/socket.c:775 [inline]
__sock_sendmsg+0xc8/0x17c net/socket.c:790
__sys_sendto+0x250/0x328 net/socket.c:2252
__do_sys_sendto net/socket.c:2259 [inline]
__se_sys_sendto net/socket.c:2255 [inline]
__arm64_sys_sendto+0xec/0x10c net/socket.c:2255
__invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at default_idle_call+0xd0/0xfc kernel/sched/idle.c:129
watchdog: BUG: soft lockup - CPU#1 stuck for 6s! [syz-executor291:5020]
Modules linked in:
irq event stamp: 9755971
hardirqs last enabled at (9755970): [<ffff800086930818>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline]
hardirqs last enabled at (9755970): [<ffff800086930818>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198
hardirqs last disabled at (9755971): [<ffff80008690b4b4>] __el1_irq arch/arm64/kernel/entry-common.c:527 [inline]
hardirqs last disabled at (9755971): [<ffff80008690b4b4>] el1_interrupt+0x28/0x60 arch/arm64/kernel/entry-common.c:543
softirqs last enabled at (14246): [<ffff800084c0e6c4>] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:698
softirqs last disabled at (14249): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
CPU: 1 UID: 0 PID: 5020 Comm: syz-executor291 Tainted: G L syzkaller #0 PREEMPT
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline]
pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198
lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline]
lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198
sp : ffff80008eb77dc0
x29: ffff80008eb77dc0 x28: 1fffe00034bbc63a x27: ffff0001a5de31c0
x26: ffff0001a5de31d0 x25: ffff0000d6acfd38 x24: dfff800000000000
x23: 0000000000000001 x22: ffff800084ec6bfc x21: ffff0001a5de2d80
x20: ffff0001a5de2d80 x19: 0000000000000000 x18: 0000000000000000
x17: ffff80008a7d6000 x16: 0000000000000004 x15: ffff80008a35fda0
x14: 000000008030dda8 x13: 0000000000000001 x12: 0000000000000000
x11: ffff800080156070 x10: 0000000000000003 x9 : 0000000000000000
x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080156118
x2 : 0000000000000000 x1 : ffff0000d5af8000 x0 : ffff80011d2fd000
Call trace:
__daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P)
arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P)
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] (P)
_raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198 (P)
__run_hrtimer kernel/time/hrtimer.c:2028 [inline]
__hrtimer_run_queues+0x22c/0xbe0 kernel/time/hrtimer.c:2096
hrtimer_run_softirq+0x15c/0x21c kernel/time/hrtimer.c:2113
handle_softirqs+0x2ec/0xd98 kernel/softirq.c:622
__do_softirq+0x14/0x20 kernel/softirq.c:656
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:885
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
invoke_softirq kernel/softirq.c:503 [inline]
__irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735
irq_exit_rcu+0x14/0x84 kernel/softirq.c:752
__el1_irq arch/arm64/kernel/entry-common.c:531 [inline]
el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:543
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:548
el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:586
__daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P)
arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P)
__local_bh_enable_ip+0x1f0/0x35c kernel/softirq.c:455 (P)
local_bh_enable include/linux/bottom_half.h:33 [inline]
__alloc_skb+0x1c8/0x610 net/core/skbuff.c:699
alloc_skb include/linux/skbuff.h:1384 [inline]
alloc_skb_with_frags+0xb8/0x690 net/core/skbuff.c:6775
sock_alloc_send_pskb+0x740/0x850 net/core/sock.c:3012
unix_dgram_sendmsg+0x434/0x1078 net/unix/af_unix.c:2137
sock_sendmsg_nosec net/socket.c:775 [inline]
__sock_sendmsg+0xc8/0x17c net/socket.c:790
__sys_sendto+0x250/0x328 net/socket.c:2252
__do_sys_sendto net/socket.c:2259 [inline]
__se_sys_sendto net/socket.c:2255 [inline]
__arm64_sys_sendto+0xec/0x10c net/socket.c:2255
__invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at default_idle_call+0xd0/0xfc kernel/sched/idle.c:129
watchdog: BUG: soft lockup - CPU#1 stuck for 9s! [syz-executor291:5020]
Modules linked in:
irq event stamp: 14939657
hardirqs last enabled at (14939656): [<ffff800086930818>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline]
hardirqs last enabled at (14939656): [<ffff800086930818>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198
hardirqs last disabled at (14939657): [<ffff80008690b4b4>] __el1_irq arch/arm64/kernel/entry-common.c:527 [inline]
hardirqs last disabled at (14939657): [<ffff80008690b4b4>] el1_interrupt+0x28/0x60 arch/arm64/kernel/entry-common.c:543
softirqs last enabled at (14246): [<ffff800084c0e6c4>] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:698
softirqs last disabled at (14249): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
CPU: 1 UID: 0 PID: 5020 Comm: syz-executor291 Tainted: G L syzkaller #0 PREEMPT
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline]
pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198
lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline]
lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198
sp : ffff80008eb77dc0
x29: ffff80008eb77dc0 x28: 1fffe00034bbc63a x27: ffff0001a5de31c0
x26: ffff0001a5de31d0 x25: ffff0000d6acfd38 x24: dfff800000000000
x23: 0000000000000001 x22: ffff800084ec6bfc x21: ffff0001a5de2d80
x20: ffff0001a5de2d80 x19: 0000000000000000 x18: 0000000000000000
x17: ffff80008a7d6000 x16: 0000000000000004 x15: ffff80008a35fda0
x14: 000000008030dda8 x13: 0000000000000001 x12: 0000000000000000
x11: ffff800080156070 x10: 0000000000000003 x9 : 0000000000000000
x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080156118
x2 : 0000000000000000 x1 : ffff0000d5af8000 x0 : ffff80011d2fd000
Call trace:
__daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P)
arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P)
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] (P)
_raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198 (P)
__run_hrtimer kernel/time/hrtimer.c:2028 [inline]
__hrtimer_run_queues+0x22c/0xbe0 kernel/time/hrtimer.c:2096
hrtimer_run_softirq+0x15c/0x21c kernel/time/hrtimer.c:2113
handle_softirqs+0x2ec/0xd98 kernel/softirq.c:622
__do_softirq+0x14/0x20 kernel/softirq.c:656
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:885
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
invoke_softirq kernel/softirq.c:503 [inline]
__irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735
irq_exit_rcu+0x14/0x84 kernel/softirq.c:752
__el1_irq arch/arm64/kernel/entry-common.c:531 [inline]
el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:543
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:548
el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:586
__daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P)
arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P)
__local_bh_enable_ip+0x1f0/0x35c kernel/softirq.c:455 (P)
local_bh_enable include/linux/bottom_half.h:33 [inline]
__alloc_skb+0x1c8/0x610 net/core/skbuff.c:699
alloc_skb include/linux/skbuff.h:1384 [inline]
alloc_skb_with_frags+0xb8/0x690 net/core/skbuff.c:6775
sock_alloc_send_pskb+0x740/0x850 net/core/sock.c:3012
unix_dgram_sendmsg+0x434/0x1078 net/unix/af_unix.c:2137
sock_sendmsg_nosec net/socket.c:775 [inline]
__sock_sendmsg+0xc8/0x17c net/socket.c:790
__sys_sendto+0x250/0x328 net/socket.c:2252
__do_sys_sendto net/socket.c:2259 [inline]
__se_sys_sendto net/socket.c:2255 [inline]
__arm64_sys_sendto+0xec/0x10c net/socket.c:2255
__invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at default_idle_call+0xd0/0xfc kernel/sched/idle.c:129
watchdog: BUG: soft lockup - CPU#1 stuck for 12s! [syz-executor291:5020]
Modules linked in:
irq event stamp: 20130019
hardirqs last enabled at (20130018): [<ffff800086930818>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline]
hardirqs last enabled at (20130018): [<ffff800086930818>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198
hardirqs last disabled at (20130019): [<ffff80008690b4b4>] __el1_irq arch/arm64/kernel/entry-common.c:527 [inline]
hardirqs last disabled at (20130019): [<ffff80008690b4b4>] el1_interrupt+0x28/0x60 arch/arm64/kernel/entry-common.c:543
softirqs last enabled at (14246): [<ffff800084c0e6c4>] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:698
softirqs last disabled at (14249): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
CPU: 1 UID: 0 PID: 5020 Comm: syz-executor291 Tainted: G L syzkaller #0 PREEMPT
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline]
pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198
lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline]
lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198
sp : ffff80008eb77dc0
x29: ffff80008eb77dc0 x28: 1fffe00034bbc63a x27: ffff0001a5de31c0
x26: ffff0001a5de31d0 x25: ffff0000d6acfd38 x24: dfff800000000000
x23: 0000000000000001 x22: ffff800084ec6bfc x21: ffff0001a5de2d80
x20: ffff0001a5de2d80 x19: 0000000000000000 x18: 0000000000000000
x17: ffff80008a7d6000 x16: 0000000000000004 x15: ffff80008a35fda0
x14: 000000008030dda8 x13: 0000000000000001 x12: 0000000000000000
x11: ffff800080156070 x10: 0000000000000003 x9 : 0000000000000000
x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080156118
x2 : 0000000000000000 x1 : ffff0000d5af8000 x0 : ffff80011d2fd000
Call trace:
__daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P)
arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P)
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] (P)
_raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198 (P)
__run_hrtimer kernel/time/hrtimer.c:2028 [inline]
__hrtimer_run_queues+0x22c/0xbe0 kernel/time/hrtimer.c:2096
hrtimer_run_softirq+0x15c/0x21c kernel/time/hrtimer.c:2113
handle_softirqs+0x2ec/0xd98 kernel/softirq.c:622
__do_softirq+0x14/0x20 kernel/softirq.c:656
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:885
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
invoke_softirq kernel/softirq.c:503 [inline]
__irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735
irq_exit_rcu+0x14/0x84 kernel/softirq.c:752
__el1_irq arch/arm64/kernel/entry-common.c:531 [inline]
el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:543
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:548
el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:586
__daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P)
arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P)
__local_bh_enable_ip+0x1f0/0x35c kernel/softirq.c:455 (P)
local_bh_enable include/linux/bottom_half.h:33 [inline]
__alloc_skb+0x1c8/0x610 net/core/skbuff.c:699
alloc_skb include/linux/skbuff.h:1384 [inline]
alloc_skb_with_frags+0xb8/0x690 net/core/skbuff.c:6775
sock_alloc_send_pskb+0x740/0x850 net/core/sock.c:3012
unix_dgram_sendmsg+0x434/0x1078 net/unix/af_unix.c:2137
sock_sendmsg_nosec net/socket.c:775 [inline]
__sock_sendmsg+0xc8/0x17c net/socket.c:790
__sys_sendto+0x250/0x328 net/socket.c:2252
__do_sys_sendto net/socket.c:2259 [inline]
__se_sys_sendto net/socket.c:2255 [inline]
__arm64_sys_sendto+0xec/0x10c net/socket.c:2255
__invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at default_idle_call+0xd0/0xfc kernel/sched/idle.c:129
---
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] only message in thread
only message in thread, other threads:[~2026-08-17 16:04 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-08-17 16:04 [syzbot] [kernel?] BUG: soft lockup in gate_timer_func syzbot
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.