INFO: task syz-executor.3:14675 blocked for more than 143 seconds.
Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27384 pid:14675 tgid:14669 ppid:13939 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
super_lock+0x335/0x400 fs/super.c:114
user_get_super+0xd2/0x180 fs/super.c:993
quotactl_block fs/quota/quota.c:890 [inline]
__do_sys_quotactl fs/quota/quota.c:955 [inline]
__se_sys_quotactl+0x52a/0xa30 fs/quota/quota.c:917
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f672ea7dda9
RSP: 002b:00007f672f7800c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f672ebac050 RCX: 00007f672ea7dda9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffff80000800
RBP: 00007f672eaca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000240 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f672ebac050 R15: 00007ffdc1750fb8
INFO: task syz-executor.3:14677 blocked for more than 144 seconds.
Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:26552 pid:14677 tgid:14669 ppid:13939 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
super_lock+0x335/0x400 fs/super.c:114
user_get_super+0xd2/0x180 fs/super.c:993
quotactl_block fs/quota/quota.c:890 [inline]
__do_sys_quotactl fs/quota/quota.c:955 [inline]
__se_sys_quotactl+0x52a/0xa30 fs/quota/quota.c:917
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f672ea7dda9
RSP: 002b:00007f672f75f0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f672ebac120 RCX: 00007f672ea7dda9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffff80000800
RBP: 00007f672eaca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000240 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f672ebac120 R15: 00007ffdc1750fb8
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4819:
#0: ffff88802b2040a0 (&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
3 locks held by kworker/0:5/20257:
#0: ffff888014c8cd38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff888014c8cd38 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffff8880b9428988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffffffff94646018 (&obj_hash[i].lock){-.-.}-{2:2}, at: __debug_check_no_obj_freed lib/debugobjects.c:978 [inline]
#2: ffffffff94646018 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_check_no_obj_freed+0x234/0x580 lib/debugobjects.c:1019
2 locks held by syz-executor.2/13573:
1 lock held by syz-executor.3/13833:
1 lock held by syz-executor.1/16043:
2 locks held by syz-executor.4/16066:
1 lock held by syz-executor.3/16073:
1 lock held by syz-executor.0/16081:
#0: ffff88808427c0e0 (&type->s_umount_key#72/1){+.+.}-{3:3}, at: alloc_super+0x20e/0x8f0 fs/super.c:345
1 lock held by syz-executor.2/16084:
1 lock held by modprobe/16085:
#0: ffff8880b953c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 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+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 13849 Comm: kworker/1:1 Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:__lock_acquire+0x825/0x1fd0 kernel/locking/lockdep.c:5087
Code: 4d 63 f4 4b 8d 04 b6 4d 8d ac c5 e0 0a 00 00 48 c7 c0 c0 a3 44 94 48 c1 e8 03 48 89 44 24 68 48 c7 c0 80 5e 84 8f 48 c1 e8 03 <48> 89 44 24 70 4d 89 ef 41 83 fc 31 0f 83 1b 02 00 00 4c 89 f8 48
RSP: 0000:ffffc90011a2f930 EFLAGS: 00000802
RAX: 1ffffffff1f08bd0 RBX: 0000000000000404 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffff888021ee6400 RDI: ffffffff92c524f8
RBP: 00000000ffffffff R08: ffffffff92c524ff R09: 1ffffffff258a49f
R10: dffffc0000000000 R11: fffffbfff258a4a0 R12: 0000000000000000
R13: ffff888021ee6420 R14: 0000000000000000 R15: ffff888021ee6470
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc226d7c038 CR3: 0000000033c78000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
wg_ratelimiter_gc_entries+0x60/0x470 drivers/net/wireguard/ratelimiter.c:63
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242