INFO: task syz-executor.4:3531 blocked for more than 143 seconds.
Not tainted 5.15.120-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:20352 pid: 3531 ppid: 1 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
rwsem_down_write_slowpath+0xebb/0x15c0 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x164/0x170 kernel/locking/rwsem.c:1542
deactivate_super+0xa9/0xe0 fs/super.c:365
cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
task_work_run+0x129/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fd466cf0e57
RSP: 002b:00007ffe47fc66d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd466cf0e57
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffe47fc6790
RBP: 00007ffe47fc6790 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe47fc7850
R13: 00007fd466d3a3b9 R14: 0000000000121630 R15: 0000000000000007
INFO: task syz-executor.0:3984 blocked for more than 143 seconds.
Not tainted 5.15.120-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:25984 pid: 3984 ppid: 3516 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
jfs_flush_journal+0x72b/0xec0 fs/jfs/jfs_logmgr.c:1572
jfs_sync_fs+0x7c/0xa0 fs/jfs/super.c:689
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: 0033:0x7f6011f89b29
RSP: 002b:00007f601050b0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f60120a8f80 RCX: 00007f6011f89b29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f6011fd547a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f60120a8f80 R15: 00007ffe271fd5e8
INFO: task syz-executor.3:4079 blocked for more than 143 seconds.
Not tainted 5.15.120-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25984 pid: 4079 ppid: 3522 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
rwsem_down_read_slowpath+0x605/0xb40 kernel/locking/rwsem.c:1047
__down_read_common kernel/locking/rwsem.c:1231 [inline]
__down_read kernel/locking/rwsem.c:1244 [inline]
down_read+0x9a/0x2e0 kernel/locking/rwsem.c:1490
iterate_supers+0xac/0x1e0 fs/super.c:703
ksys_sync+0xb9/0x1c0 fs/sync.c:102
__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: 0033:0x7efc18d49b29
RSP: 002b:00007efc172cb0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007efc18e68f80 RCX: 00007efc18d49b29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007efc18d9547a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007efc18e68f80 R15: 00007ffed189a498
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8c91e6a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3257:
#0: ffff888024ab5098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900024bb2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1da0 drivers/tty/n_tty.c:2147
1 lock held by syz-executor.4/3531:
#0: ffff88807d8120e0 (&type->s_umount_key#114){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
1 lock held by syz-executor.0/3984:
#0: ffff88807d8120e0 (&type->s_umount_key#114){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
1 lock held by syz-executor.3/4079:
#0: ffff88807d8120e0 (&type->s_umount_key#114){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
1 lock held by syz-executor.0/4236:
#0: ffff88807d8120e0 (&type->s_umount_key#114){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.15.120-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
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: 14678 Comm: kworker/u4:2 Not tainted 5.15.120-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Workqueue: phy35 ieee80211_iface_work
RIP: 0010:unwind_next_frame+0x423/0x1fa0 arch/x86/kernel/unwind_orc.c:461
Code: c5 14 00 00 c6 03 01 49 c7 c6 c0 6d 88 8a 49 8d 6e 04 49 8d 5e 05 49 89 ec 49 c1 ec 03 41 0f b6 04 14 84 c0 0f 85 33 14 00 00 <48> 89 d8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 49 14 00 00 0f b7 45
RSP: 0018:ffffc9000489eee8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8e5a2d31 RCX: ffffffff8df2b86c
RDX: dffffc0000000000 RSI: ffffffff8e5a2d2c RDI: ffffffff8df2b868
RBP: ffffffff8e5a2d30 R08: 0000000000000001 R09: ffffc9000489f090
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1cb45a6
R13: ffffffff8153df39 R14: ffffffff8e5a2d2c R15: ffffc9000489efa0
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c003a9f000 CR3: 00000000230e1000 CR4: 00000000003506e0
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:1732
cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2449 [inline]
cfg80211_inform_bss_frame_data+0xa13/0x20f0 net/wireless/scan.c:2482
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:2307
worker_thread+0xaca/0x1280 kernel/workqueue.c:2454
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298