INFO: task syz-executor.5:22532 blocked for more than 145 seconds.
Not tainted 5.15.124-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:28256 pid:22532 ppid: 11128 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6514
__mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
exfat_sync_fs+0x67/0x100 fs/exfat/super.c:64
iterate_supers+0x127/0x1e0 fs/super.c:705
ksys_sync+0xd7/0x1c0 fs/sync.c:104
__do_sys_sync+0xa/0x10 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f8851e59ae9
RSP: 002b:00007f88503990c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f8851f79120 RCX: 00007f8851e59ae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f8851ea547a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8851f79120 R15: 00007ffc801ecb28
INFO: task syz-executor.5:22535 blocked for more than 146 seconds.
Not tainted 5.15.124-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:26592 pid:22535 ppid: 11128 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6514
__mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
exfat_sync_fs+0x67/0x100 fs/exfat/super.c:64
iterate_supers+0x127/0x1e0 fs/super.c:705
ksys_sync+0xd7/0x1c0 fs/sync.c:104
__do_sys_sync+0xa/0x10 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f8851e59ae9
RSP: 002b:00007f88503780c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f8851f791f0 RCX: 00007f8851e59ae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f8851ea547a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8851f791f0 R15: 00007ffc801ecb28
Showing all locks held in the system:
2 locks held by kworker/u4:0/9:
1 lock held by khungtaskd/26:
#0: ffffffff8c91e920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by udevd/2963:
2 locks held by getty/3257:
#0: ffff88814b0f4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900020a32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
1 lock held by syz-executor.2/3540:
#0: ffffffff8c922e68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
#0: ffffffff8c922e68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x350/0x740 kernel/rcu/tree_exp.h:842
1 lock held by syz-executor.4/3561:
#0: ffffffff8c944450 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: copy_process+0x2210/0x3ef0 kernel/fork.c:2299
3 locks held by syz-executor.3/20252:
1 lock held by syz-executor.3/20318:
#0: ffffffff8c944450 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: copy_process+0x2210/0x3ef0 kernel/fork.c:2299
2 locks held by syz-executor.5/22532:
#0: ffff8880341a40e0 (&type->s_umount_key#84){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
#1: ffff8880385e20e0 (&sbi->s_lock#2){+.+.}-{3:3}, at: exfat_sync_fs+0x67/0x100 fs/exfat/super.c:64
2 locks held by syz-executor.5/22535:
#0: ffff8880341a40e0 (&type->s_umount_key#84){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
#1: ffff8880385e20e0 (&sbi->s_lock#2){+.+.}-{3:3}, at: exfat_sync_fs+0x67/0x100 fs/exfat/super.c:64
2 locks held by kworker/0:7/22552:
#0: ffff888011c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90003adfd20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
2 locks held by kworker/0:16/22562:
#0: ffff888011c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90004797d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
1 lock held by syz-executor.5/22858:
#0: ffffffff8c944450 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: copy_process+0x2210/0x3ef0 kernel/fork.c:2299
2 locks held by kworker/1:35/23377:
#0: ffff888011c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc900039bfd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
1 lock held by syz-executor.1/23833:
#0: ffffffff8c944450 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x285/0x2480 kernel/exit.c:828
1 lock held by syz-executor.1/23834:
#0: ffffffff8c944450 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x285/0x2480 kernel/exit.c:828
1 lock held by syz-executor.0/23836:
#0: ffffffff8c944450 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: copy_process+0x2210/0x3ef0 kernel/fork.c:2299
5 locks held by kvm-nx-lpage-re/23838:
#0: ffffffff8c944268 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_attach_task_all+0x23/0x150 kernel/cgroup/cgroup-v1.c:61
#1: ffffffff8c7bc290 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_attach_task_all+0x28/0x150 kernel/cgroup/cgroup-v1.c:62
#2: ffffffff8c944450 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_task_all+0x34/0x150 kernel/cgroup/cgroup-v1.c:63
#3: ffffffff8c950630 (&cpuset_rwsem){++++}-{0:0}, at: cpuset_can_attach+0x1e9/0x490 kernel/cgroup/cpuset.c:2197
#4: ffffffff8c922e68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#4: ffffffff8c922e68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:842
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.15.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3709 Comm: kworker/u4:14 Not tainted 5.15.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: phy16 ieee80211_iface_work
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:169 [inline]
RIP: 0010:unwind_next_frame+0x1fe/0x1fa0 arch/x86/kernel/unwind_orc.c:448
Code: 46 ff 39 e8 0f 86 a7 15 00 00 89 e8 48 8d 1c 85 24 7e ec 8e 48 89 d8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 3d 17 00 00 44 8b 23 <89> e8 ff c0 48 8d 1c 85 24 7e ec 8e 48 89 d8 48 c1 e8 03 0f b6 04
RSP: 0018:ffffc90004d7eee8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8f0eb884 RCX: 0000000000096084
RDX: dffffc0000000000 RSI: ffffffff898e983d RDI: 0000000000000001
RBP: 0000000000088e98 R08: 0000000000000004 R09: ffffc90004d7f090
R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000016e3fd
R13: ffffffff898e983c R14: 0000000000096084 R15: ffffc90004d7efa0
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020037000 CR3: 0000000032475000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348
kvfree_call_rcu+0x118/0x8a0 kernel/rcu/tree.c:3583
cfg80211_update_known_bss+0x16b/0x9e0
cfg80211_bss_update+0x16d/0x20d0 net/wireless/scan.c:1767
cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2484 [inline]
cfg80211_inform_bss_frame_data+0xa13/0x20f0 net/wireless/scan.c:2517
ieee80211_bss_info_update+0x7a6/0xc80 net/mac80211/scan.c:190
ieee80211_rx_bss_info net/mac80211/ibss.c:1123 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1614 [inline]
ieee80211_ibss_rx_queued_mgmt+0x175e/0x2af0 net/mac80211/ibss.c:1643
ieee80211_iface_process_skb net/mac80211/iface.c:1441 [inline]
ieee80211_iface_work+0x78f/0xcc0 net/mac80211/iface.c:1495
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298