INFO: task syz.0.26:5326 blocked for more than 143 seconds.
Not tainted 6.1.123-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.26 state:D stack:24792 pid:5326 ppid:5310 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
rwsem_down_read_slowpath kernel/locking/rwsem.c:1094 [inline]
__down_read_common kernel/locking/rwsem.c:1261 [inline]
__down_read kernel/locking/rwsem.c:1274 [inline]
down_read+0x6ff/0xa30 kernel/locking/rwsem.c:1522
user_get_super+0x11a/0x250 fs/super.c:889
quotactl_block fs/quota/quota.c:890 [inline]
__do_sys_quotactl fs/quota/quota.c:954 [inline]
__se_sys_quotactl+0x490/0x770 fs/quota/quota.c:916
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb982785d29
RSP: 002b:00007fb9834ec038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fb982975fa0 RCX: 00007fb982785d29
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffff80000801
RBP: 00007fb982801b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb982975fa0 R15: 00007fff7e6c5128
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d32b290 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d32ba90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
#0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6510
2 locks held by getty/4008:
#0: ffff88803076a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc9000325e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2198
4 locks held by syz.0.16/5018:
4 locks held by syz.1.17/5122:
5 locks held by syz.2.18/5138:
4 locks held by syz.3.19/5155:
3 locks held by kworker/u4:6/5170:
5 locks held by syz.4.20/5179:
4 locks held by syz.5.21/5204:
4 locks held by syz.6.22/5235:
6 locks held by syz.7.23/5258:
4 locks held by syz.8.24/5281:
4 locks held by syz.9.25/5306:
4 locks held by kworker/u4:10/5323:
#0: ffff8880b8f3a9d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:537
#1: ffffc90005287d20 ((work_completion)(&worker->work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#2: ffff8880b8f27788 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_change+0xe9/0x260 kernel/sched/psi.c:924
#3: ffff8880b8f3a9d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:537
1 lock held by syz.0.26/5326:
#0: ffff8880206740e0 (&type->s_umount_key#52){.+.+}-{3:3}, at: user_get_super+0x11a/0x250 fs/super.c:889
1 lock held by syz.1.27/5351:
#0: ffff88807cdc80e0 (&type->s_umount_key#52){.+.+}-{3:3}, at: user_get_super+0x11a/0x250 fs/super.c:889
1 lock held by syz.2.28/5369:
#0: ffff88805d18a0e0 (&type->s_umount_key#52){.+.+}-{3:3}, at: user_get_super+0x11a/0x250 fs/super.c:889
1 lock held by syz.3.29/5387:
#0: ffff8880284e20e0 (&type->s_umount_key#52){.+.+}-{3:3}, at: user_get_super+0x11a/0x250 fs/super.c:889
1 lock held by syz-executor660/5405:
#0: ffff8880206740e0 (&type->s_umount_key#52){.+.+}-{3:3}, at: user_get_super+0x11a/0x250 fs/super.c:889
1 lock held by syz.4.30/5418:
#0: ffff888059e800e0 (&type->s_umount_key#52){.+.+}-{3:3}, at: user_get_super+0x11a/0x250 fs/super.c:889
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.123-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ae/0x3f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xf88/0xfd0 kernel/hung_task.c:377
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 128 Comm: kworker/0:2 Not tainted 6.1.123-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:mark_lock+0xa2/0x340 kernel/locking/lockdep.c:4606
Code: 00 8b 1b 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 60 f2 24 91 be 08 00 00 00 e8 36 1f 77 00 48 0f a3 1d ee df b9 0f <73> 11 48 8d 04 5b 48 c1 e0 06 48 8d 98 20 71 bd 90 eb 23 48 c7 c0
RSP: 0018:ffffc90002de7958 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000797 RCX: ffffffff816b126a
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9124f350
RBP: 0000000000000002 R08: dffffc0000000000 R09: fffffbfff2249e6b
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801db2e418
R13: dffffc0000000000 R14: 0000000000000004 R15: ffff88801db2e470
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005653bad14038 CR3: 000000000d08e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_usage kernel/locking/lockdep.c:4537 [inline]
__lock_acquire+0xc0d/0x1f80 kernel/locking/lockdep.c:5003
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
wg_ratelimiter_gc_entries+0x5c/0x470 drivers/net/wireguard/ratelimiter.c:63
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295