INFO: task syz.2.11348:1115 blocked for more than 122 seconds.
Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.11348 state:D stack:0 pid:1115 tgid:1114 ppid:32398 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5929 [inline]
__schedule+0x145b/0x1f10 kernel/sched/core.c:7755
__schedule_loop kernel/sched/core.c:7836 [inline]
schedule+0xc6/0x240 kernel/sched/core.c:7851
super_lock+0x150/0x300 fs/super.c:115
super_lock_shared fs/super.c:140 [inline]
iterate_supers+0x8a/0x560 fs/super.c:934
quota_sync_all fs/quota/quota.c:69 [inline]
__do_sys_quotactl fs/quota/quota.c:938 [inline]
__se_sys_quotactl+0x308/0x7d0 fs/quota/quota.c:917
__x64_sys_quotactl+0x9f/0xc0 fs/quota/quota.c:917
x64_sys_call+0x2818/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:180
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f48ab58e929
RSP: 002b:00007f48ac360038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f48ab7b5fa0 RCX: 00007f48ab58e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000101
RBP: 00007f48ab610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f48ab7b5fa0 R15: 00007fff8574d928
INFO: task syz.6.11367:1175 blocked for more than 123 seconds.
Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.11367 state:D stack:0 pid:1175 tgid:1174 ppid:29942 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5929 [inline]
__schedule+0x145b/0x1f10 kernel/sched/core.c:7755
__schedule_loop kernel/sched/core.c:7836 [inline]
schedule+0xc6/0x240 kernel/sched/core.c:7851
super_lock+0x150/0x300 fs/super.c:115
super_lock_shared fs/super.c:140 [inline]
iterate_supers+0x8a/0x560 fs/super.c:934
ksys_sync+0x95/0x160 fs/sync.c:103
__ia32_sys_sync+0x12/0x20 fs/sync.c:114
x64_sys_call+0x2a58/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:163
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f724fd8e929
RSP: 002b:00007f724fbeb038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f724ffb5fa0 RCX: 00007f724fd8e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f724ffb5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f724ffb5fa0 R15: 00007ffcedc47bd8
INFO: task syz.6.11367:1176 blocked for more than 123 seconds.
Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.11367 state:D stack:0 pid:1176 tgid:1174 ppid:29942 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5929 [inline]
__schedule+0x145b/0x1f10 kernel/sched/core.c:7755
__schedule_loop kernel/sched/core.c:7836 [inline]
schedule+0xc6/0x240 kernel/sched/core.c:7851
super_lock+0x150/0x300 fs/super.c:115
super_lock_shared fs/super.c:140 [inline]
iterate_supers+0x8a/0x560 fs/super.c:934
ksys_sync+0x95/0x160 fs/sync.c:103
__ia32_sys_sync+0x12/0x20 fs/sync.c:114
x64_sys_call+0x2a58/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:163
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f724fd8e929
RSP: 002b:00007f724fbca038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f724ffb6080 RCX: 00007f724fd8e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f724ffb6080 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f724ffb6080 R15: 00007ffcedc47bd8
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0 e1c904518e9113895a28c59b25a6002cdacb68bf
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x10c/0x190 lib/dump_stack.c:120
dump_stack+0x19/0x20 lib/dump_stack.c:129
nmi_cpu_backtrace+0x2bf/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:229 [inline]
watchdog+0xd8f/0xed0 kernel/hung_task.c:385
kthread+0x2c7/0x370 kernel/kthread.c:389
ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5601 Comm: syz.4.12825 Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0 e1c904518e9113895a28c59b25a6002cdacb68bf
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:_raw_spin_lock_irqsave+0x28/0x150 kernel/locking/spinlock.c:161
Code: 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 80 00 00 00 48 89 fb 65 48 8b 04 25 28 00 00 00 <48> 89 44 24 60 49 bc 00 00 00 00 00 fc ff df 4c 8d 7c 24 20 48 c7
RSP: 0018:ffffc90004bdfa60 EFLAGS: 00000086
RAX: de11c87d94f9f400 RBX: ffff8881f6f2cec0 RCX: 0000000000080000
RDX: ffffc9001054a000 RSI: 000000000007ffff RDI: ffff8881f6f2cec0
RBP: ffffc90004bdfb08 R08: 0000000000000003 R09: 0000000000000004
R10: 0000000000000000 R11: ffffffff813bbc70 R12: dffffc0000000000
R13: ffff8881f6f2cf00 R14: 1ffff1102881c8b5 R15: ffff8881440e4578
FS: 00007f383ca876c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3ff1b81ab8 CR3: 000000015c39e000 CR4: 00000000003526b0
Call Trace:
lock_hrtimer_base kernel/time/hrtimer.c:185 [inline]
hrtimer_start_range_ns+0xe8/0x2190 kernel/time/hrtimer.c:1355
hrtimer_start_expires include/linux/hrtimer.h:290 [inline]
hrtimer_restart include/linux/hrtimer.h:298 [inline]
common_hrtimer_rearm+0x10e/0x120 kernel/time/posix-timers.c:249
posixtimer_rearm+0x155/0x360 kernel/time/posix-timers.c:267
dequeue_signal+0x1c6/0x4f0 kernel/signal.c:700
get_signal+0x51c/0x14f0 kernel/signal.c:2814
arch_do_signal_or_restart+0x96/0x720 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x58/0xb0 kernel/entry/common.c:218
do_syscall_64+0x64/0xf0 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f383bb8e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f383ca870e8 EFLAGS: 00000246
RAX: fffffffffffffffc RBX: 00007f383bdb5fa8 RCX: 00007f383bb8e929
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f383bdb5fa8
RBP: 00007f383bdb5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f383bdb5fac
R13: 0000000000000000 R14: 00007ffd9833fb50 R15: 00007ffd9833fc38