INFO: task syz-executor:6433 blocked for more than 143 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:23016 pid:6433 tgid:6433 ppid:1 task_flags:0x40054c flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
__mutex_lock_common kernel/locking/mutex.c:678 [inline]
__mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:746
rfkill_unregister+0xec/0x2c0 net/rfkill/core.c:1145
hci_unregister_dev+0x323/0x620 net/bluetooth/hci_core.c:2695
vhci_release+0x79/0xf0 drivers/bluetooth/hci_vhci.c:665
__fput+0x3ff/0xb70 fs/file_table.c:465
task_work_run+0x14d/0x240 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xafb/0x2c30 kernel/exit.c:953
do_group_exit+0xd3/0x2a0 kernel/exit.c:1102
get_signal+0x2673/0x26d0 kernel/signal.c:3034
arch_do_signal_or_restart+0x8f/0x7d0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x260 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2888f8cd6b
RSP: 002b:00007ffef13be220 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000005bcf RCX: 00007f2888f8cd6b
RDX: 00007ffef13be298 RSI: 0000000040086602 RDI: 0000000000000005
RBP: 00007ffef13be330 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffef13bf3c0
R13: 00007f288900e08c R14: 00005555768ad4a8 R15: 0000000000000005
INFO: task kworker/1:4:6469 blocked for more than 143 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:4 state:D stack:22344 pid:6469 tgid:6469 ppid:2 task_flags:0x4208060 flags:0x00004000
Workqueue: events rfkill_sync_work
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
__mutex_lock_common kernel/locking/mutex.c:678 [inline]
__mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:746
device_lock include/linux/device.h:922 [inline]
nfc_dev_down+0x2d/0x2e0 net/nfc/core.c:143
nfc_rfkill_set_block+0x39/0xe0 net/nfc/core.c:179
rfkill_set_block+0x1fb/0x550 net/rfkill/core.c:346
rfkill_sync+0x10a/0x1c0 net/rfkill/core.c:379
rfkill_sync_work+0x27/0x40 net/rfkill/core.c:1056
process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task kworker/1:7:6502 blocked for more than 143 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:7 state:D stack:24504 pid:6502 tgid:6502 ppid:2 task_flags:0x4208060 flags:0x00004000
Workqueue: events rfkill_global_led_trigger_worker
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
__mutex_lock_common kernel/locking/mutex.c:678 [inline]
__mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:746
rfkill_global_led_trigger_worker+0x1b/0x160 net/rfkill/core.c:182
process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task syz.4.3165:11983 blocked for more than 144 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.3165 state:D stack:26488 pid:11983 tgid:11983 ppid:6435 task_flags:0x400040 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
schedule_timeout+0x257/0x290 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x2fc/0x4e0 kernel/sched/completion.c:116
__flush_work+0x7d7/0xcc0 kernel/workqueue.c:4244
__cancel_work_sync+0x10c/0x130 kernel/workqueue.c:4364
rfkill_unregister+0x95/0x2c0 net/rfkill/core.c:1139
nfc_unregister_device+0x94/0x330 net/nfc/core.c:1167
virtual_ncidev_close+0x4b/0xa0 drivers/nfc/virtual_ncidev.c:172
__fput+0x3ff/0xb70 fs/file_table.c:465
task_work_run+0x14d/0x240 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x260 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbe4a98d169
RSP: 002b:00007fff99ba9868 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fbe4aba7ba0 RCX: 00007fbe4a98d169
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fbe4aba7ba0 R08: 0000000000005af4 R09: 0000000299ba9b5f
R10: 00000000005f52ac R11: 0000000000000246 R12: 0000000000033864
R13: 00007fbe4aba6080 R14: ffffffffffffffff R15: 00007fff99ba9980
INFO: task syz-executor:12402 blocked for more than 144 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:28184 pid:12402 tgid:12402 ppid:1 task_flags:0x400040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
__mutex_lock_common kernel/locking/mutex.c:678 [inline]
__mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:746
rfkill_register+0x3a/0xb40 net/rfkill/core.c:1071
hci_register_dev+0x3cc/0xc60 net/bluetooth/hci_core.c:2597
__vhci_create_device+0x357/0x7f0 drivers/bluetooth/hci_vhci.c:429
vhci_create_device drivers/bluetooth/hci_vhci.c:471 [inline]
vhci_get_user drivers/bluetooth/hci_vhci.c:528 [inline]
vhci_write+0x2c0/0x480 drivers/bluetooth/hci_vhci.c:608
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0x5ba/0x1180 fs/read_write.c:684
ksys_write+0x12a/0x240 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc48818bbe0
RSP: 002b:00007ffe5f24a768 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc48818bbe0
RDX: 0000000000000002 RSI: 00007ffe5f24a77a RDI: 00000000000000ca
RBP: 00007fc4883a6738 R08: 0000000000000000 R09: 00007fc488edd6c0
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
INFO: task syz.0.3393:12497 blocked for more than 144 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.3393 state:D stack:23944 pid:12497 tgid:12496 ppid:6421 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
__mutex_lock_common kernel/locking/mutex.c:678 [inline]
__mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:746
rfkill_register+0x3a/0xb40 net/rfkill/core.c:1071
wiphy_register+0x2239/0x2850 net/wireless/core.c:1070
ieee80211_register_hw+0x2432/0x4020 net/mac80211/main.c:1587
mac80211_hwsim_new_radio+0x3034/0x54d0 drivers/net/wireless/virtual/mac80211_hwsim.c:5559
hwsim_new_radio_nl+0xb51/0x12c0 drivers/net/wireless/virtual/mac80211_hwsim.c:6243
genl_family_rcv_msg_doit+0x206/0x2f0 net/netlink/genetlink.c:1115
genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
genl_rcv_msg+0x55c/0x800 net/netlink/genetlink.c:1210
netlink_rcv_skb+0x16a/0x440 net/netlink/af_netlink.c:2534
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x53a/0x7f0 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg net/socket.c:727 [inline]
____sys_sendmsg+0xa95/0xc70 net/socket.c:2566
___sys_sendmsg+0x134/0x1d0 net/socket.c:2620
__sys_sendmsg+0x16d/0x220 net/socket.c:2652
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa944b8d169
RSP: 002b:00007fa9429f6038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa944da5fa0 RCX: 00007fa944b8d169
RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000000000000004
RBP: 00007fa944c0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa944da5fa0 R15: 00007ffca1614148
INFO: task syz.2.3405:12519 blocked for more than 144 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.3405 state:D stack:28056 pid:12519 tgid:12518 ppid:6426 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
__mutex_lock_common kernel/locking/mutex.c:678 [inline]
__mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:746
rfkill_fop_open+0x136/0x750 net/rfkill/core.c:1178
misc_open+0x35a/0x420 drivers/char/misc.c:179
chrdev_open+0x231/0x6a0 fs/char_dev.c:414
do_dentry_open+0x741/0x1c10 fs/open.c:956
vfs_open+0x82/0x3f0 fs/open.c:1086
do_open fs/namei.c:3845 [inline]
path_openat+0x1e5e/0x2d40 fs/namei.c:4004
do_filp_open+0x20b/0x470 fs/namei.c:4031
do_sys_openat2+0x11b/0x1d0 fs/open.c:1429
do_sys_open fs/open.c:1444 [inline]
__do_sys_openat fs/open.c:1460 [inline]
__se_sys_openat fs/open.c:1455 [inline]
__x64_sys_openat+0x174/0x210 fs/open.c:1455
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f635cd8d169
RSP: 002b:00007f635db92038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f635cfa5fa0 RCX: 00007f635cd8d169
RDX: 0000000000080201 RSI: 00002000000000c0 RDI: ffffffffffffff9c
RBP: 00007f635ce0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f635cfa5fa0 R15: 00007ffc42b97e58
INFO: task syz.1.3424:12559 blocked for more than 145 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.3424 state:D stack:28856 pid:12559 tgid:12558 ppid:6424 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
__mutex_lock_common kernel/locking/mutex.c:678 [inline]
__mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:746
misc_open+0x63/0x420 drivers/char/misc.c:143
chrdev_open+0x231/0x6a0 fs/char_dev.c:414
do_dentry_open+0x741/0x1c10 fs/open.c:956
vfs_open+0x82/0x3f0 fs/open.c:1086
do_open fs/namei.c:3845 [inline]
path_openat+0x1e5e/0x2d40 fs/namei.c:4004
do_filp_open+0x20b/0x470 fs/namei.c:4031
do_sys_openat2+0x11b/0x1d0 fs/open.c:1429
do_sys_open fs/open.c:1444 [inline]
__do_sys_openat fs/open.c:1460 [inline]
__se_sys_openat fs/open.c:1455 [inline]
__x64_sys_openat+0x174/0x210 fs/open.c:1455
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f202058d169
RSP: 002b:00007f20214c0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f20207a5fa0 RCX: 00007f202058d169
RDX: 0000000000000002 RSI: 0000200000000040 RDI: 00000000ffffff9c
RBP: 00007f202060e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f20207a5fa0 R15: 00007ffdfa18d838
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e3c1580 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e3c1580 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e3c1580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6764
2 locks held by getty/5572:
#0: ffff88814cbe20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41b/0x14f0 drivers/tty/n_tty.c:2222
1 lock held by syz-executor/6433:
#0: ffffffff905d3328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xec/0x2c0 net/rfkill/core.c:1145
4 locks held by kworker/1:4/6469:
#0: ffff88801b478d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3213
#1: ffffc9000428fd18 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3214
#2: ffffffff905d3328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_sync_work+0x1b/0x40 net/rfkill/core.c:1055
#3: ffff88805899e100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:922 [inline]
#3: ffff88805899e100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down+0x2d/0x2e0 net/nfc/core.c:143
3 locks held by kworker/1:7/6502:
#0: ffff88801b478d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3213
#1: ffffc90003effd18 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3214
#2: ffffffff905d3328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x1b/0x160 net/rfkill/core.c:182
1 lock held by syz.4.3165/11983:
#0: ffff88805899e100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:922 [inline]
#0: ffff88805899e100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x60/0x330 net/nfc/core.c:1165
2 locks held by syz-executor/12402:
#0: ffff88805f8b6118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device drivers/bluetooth/hci_vhci.c:470 [inline]
#0: ffff88805f8b6118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_get_user drivers/bluetooth/hci_vhci.c:528 [inline]
#0: ffff88805f8b6118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_write+0x2b4/0x480 drivers/bluetooth/hci_vhci.c:608
#1: ffffffff905d3328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x3a/0xb40 net/rfkill/core.c:1071
3 locks held by syz.0.3393/12497:
#0: ffffffff901cddd0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901cde88 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901cde88 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901cde88 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901cde88 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
#2: ffffffff905d3328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x3a/0xb40 net/rfkill/core.c:1071
2 locks held by syz.2.3405/12519:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
#1: ffffffff905d3328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_fop_open+0x136/0x750 net/rfkill/core.c:1178
1 lock held by syz.1.3424/12559:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12564:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12568:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12570:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12572:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12575:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12577:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12579:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12581:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12583:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12585:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12587:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12592:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12595:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
1 lock held by syz-executor/12597:
#0: ffffffff8f0e0328 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x63/0x420 drivers/char/misc.c:143
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0xf70/0x12c0 kernel/hung_task.c:437
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: kauditd Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x17/0x70 kernel/kcov.c:217
Code: 03 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 34 24 65 48 8b 15 c8 8f eb 11 65 8b 05 d9 8f eb 11 00 01 ff 00 74 1d f6 c4 01 74 43 a9 00 00 0f 00 75 3c a9 00 00
RSP: 0018:ffffc90000a77400 EFLAGS: 00000293
RAX: 0000000080000001 RBX: 0000000000000000 RCX: ffffffff8b6ec3d7
RDX: ffff88801e6fc880 RSI: ffffffff8b6ec3e5 RDI: 0000000000000001
RBP: ffffc90000a774a8 R08: 0000000000000001 R09: 0000000000000002
R10: 0000000000000000 R11: 000000000004baf0 R12: 0000000000000000
R13: ffffffff8b8ddda0 R14: ffffc90000a77528 R15: ffffc90000a77796
FS: 0000000000000000(0000) GS:ffff888124ab3000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b0404fdde CR3: 000000003446e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
format_decode+0xd5/0xd40 lib/vsprintf.c:2586
vsnprintf+0x156/0x1160 lib/vsprintf.c:2795
sprintf+0xcc/0x100 lib/vsprintf.c:3015
print_caller kernel/printk/printk.c:1392 [inline]
info_print_prefix+0x146/0x350 kernel/printk/printk.c:1409
record_print_text+0x140/0x400 kernel/printk/printk.c:1456
printk_get_next_message+0x2d1/0x6d0 kernel/printk/printk.c:3024
console_emit_next_record kernel/printk/printk.c:3092 [inline]
console_flush_all+0x6ea/0xc60 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0xd8/0x210 kernel/printk/printk.c:3325
vprintk_emit+0x418/0x6d0 kernel/printk/printk.c:2450
_printk+0xc7/0x100 kernel/printk/printk.c:2475
kauditd_printk_skb kernel/audit.c:546 [inline]
kauditd_hold_skb+0x205/0x250 kernel/audit.c:581
kauditd_send_queue+0x236/0x290 kernel/audit.c:766
kauditd_thread+0x623/0xa70 kernel/audit.c:890
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245