INFO: task syz-executor:4173 blocked for more than 143 seconds.
Not tainted 5.15.183-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21152 pid: 4173 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x11b8/0x43b0 kernel/sched/core.c:6376
schedule+0x11b/0x1e0 kernel/sched/core.c:6459
schedule_timeout+0x15c/0x280 kernel/time/timer.c:1914
gfs2_gl_hash_clear+0x1a4/0x2f0 fs/gfs2/glock.c:2183
gfs2_put_super+0x769/0x7d0 fs/gfs2/super.c:624
generic_shutdown_super+0x130/0x300 fs/super.c:475
kill_block_super+0x7c/0xe0 fs/super.c:1427
deactivate_locked_super+0x93/0xf0 fs/super.c:335
cleanup_mnt+0x418/0x4d0 fs/namespace.c:1143
task_work_run+0x125/0x1a0 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9f12a65c97
RSP: 002b:00007fff796afa68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f9f12ae689d RCX: 00007f9f12a65c97
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff796afb20
RBP: 00007fff796afb20 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff796b0bb0
R13: 00007f9f12ae689d R14: 0000000000019d39 R15: 00007fff796b0bf0
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c11bea0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3931:
#0: ffff88802b772098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900021ae2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5ba/0x1a30 drivers/tty/n_tty.c:2158
1 lock held by syz-executor/4173:
#0: ffff8880631bc0e0 (&type->s_umount_key#93){++++}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365
4 locks held by kworker/u4:4/4189:
3 locks held by kworker/1:5/4212:
#0: ffff888016870938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1
#1: ffffc9000318fd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285
#2: ffff8880b9127e78 (krc.lock){..-.}-{2:2}, at: kfree_rcu_monitor+0x29/0x730 kernel/rcu/tree.c:3378
3 locks held by kworker/0:11/8218:
#0: ffff88814c7ac538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1
#1: ffffc900046cfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285
#2: ffffffff8d22a388 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x1520 net/ipv6/addrconf.c:4116
2 locks held by kworker/u4:8/8655:
#0: ffff8880b913a318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
#1: ffff8880b9127848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x4d6/0x810 kernel/sched/psi.c:891
3 locks held by kworker/1:22/12436:
#0: ffff888016870938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1
#1: ffffc90004577d00 (fqdir_free_work){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285
#2: ffffffff8c120830 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0xa1/0x4b0 kernel/rcu/tree.c:4039
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.183-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call Trace:
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
nmi_cpu_backtrace+0x397/0x3d0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xe0f/0xe50 kernel/hung_task.c:369
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 5.15.183-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Workqueue: phy5 ieee80211_iface_work
RIP: 0010:ieee80211_update_sta_info net/mac80211/ibss.c:1036 [inline]
RIP: 0010:ieee80211_rx_bss_info net/mac80211/ibss.c:1121 [inline]
RIP: 0010:ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1614 [inline]
RIP: 0010:ieee80211_ibss_rx_queued_mgmt+0x1391/0x29c0 net/mac80211/ibss.c:1643
Code: 31 db 4c 8b 64 24 18 4c 89 74 24 38 49 8d 96 50 0f 00 00 49 89 d6 49 c1 ee 03 43 0f b6 04 3e 84 c0 0f 85 0c 10 00 00 80 3a 01 <75> 0f e8 28 4d 4b f8 4c 8b 74 24 38 e9 f5 00 00 00 89 5c 24 24 49
RSP: 0018:ffffc90000ce79a0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000f00 RCX: ffff88813fed0000
RDX: ffff88807de88f50 RSI: 0000000000000fff RDI: 0000000000000fff
RBP: ffffc90000ce7bc0 R08: dffffc0000000000 R09: fffffbfff1ad148e
R10: fffffbfff1ad148e R11: 1ffffffff1ad148d R12: ffff888077acf800
R13: ffff88805fb31b08 R14: 1ffff1100fbd11ea R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa499259c50 CR3: 000000002a29b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_iface_process_skb net/mac80211/iface.c:1459 [inline]
ieee80211_iface_work+0x70e/0xc60 net/mac80211/iface.c:1513
process_one_work+0x863/0x1000 kernel/workqueue.c:2310
worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287