INFO: task udevd:3636 blocked for more than 143 seconds.
Not tainted 6.1.0-rc1-syzkaller-00454-ga70385240892 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:27136 pid:3636 ppid:2968 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0xae9/0x53f0 kernel/sched/core.c:6503
schedule+0xda/0x1b0 kernel/sched/core.c:6579
io_schedule+0xba/0x130 kernel/sched/core.c:8723
folio_wait_bit_common+0x394/0x9b0 mm/filemap.c:1296
__folio_lock mm/filemap.c:1659 [inline]
folio_lock include/linux/pagemap.h:939 [inline]
folio_lock include/linux/pagemap.h:935 [inline]
__filemap_get_folio+0xb76/0xd90 mm/filemap.c:1931
truncate_inode_pages_range+0x382/0x1020 mm/truncate.c:378
kill_bdev block/bdev.c:76 [inline]
blkdev_flush_mapping+0x140/0x2f0 block/bdev.c:662
blkdev_put_whole+0xd1/0xf0 block/bdev.c:693
blkdev_put+0x226/0x770 block/bdev.c:953
blkdev_close+0x64/0x80 block/fops.c:499
__fput+0x27c/0xa90 fs/file_table.c:320
task_work_run+0x16b/0x270 kernel/task_work.c:179
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xb35/0x2a20 kernel/exit.c:820
do_group_exit+0xd0/0x2a0 kernel/exit.c:950
get_signal+0x21a1/0x2430 kernel/signal.c:2858
arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f73c5f25697
RSP: 002b:00007ffd08efe3a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: 0000000000000008 RBX: 0000560f2f454810 RCX: 00007f73c5f25697
RDX: 00000000000a0800 RSI: 0000560f2f431cf0 RDI: 00000000ffffff9c
RBP: 0000560f2f431cf0 R08: 0000000000000001 R09: 00007ffd08f10080
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000560f2f44c290 R14: 0000000000000001 R15: 0000560f2f428910
INFO: task syz-executor251:3672 blocked for more than 143 seconds.
Not tainted 6.1.0-rc1-syzkaller-00454-ga70385240892 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor251 state:D stack:29168 pid:3672 ppid:3632 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0xae9/0x53f0 kernel/sched/core.c:6503
schedule+0xda/0x1b0 kernel/sched/core.c:6579
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
blkdev_get_by_dev.part.0+0x9b/0xb90 block/bdev.c:813
blkdev_get_by_dev+0x6b/0x80 block/bdev.c:856
blkdev_open+0x13c/0x2c0 block/fops.c:485
do_dentry_open+0x6cc/0x13f0 fs/open.c:882
do_open fs/namei.c:3557 [inline]
path_openat+0x1bf6/0x2860 fs/namei.c:3713
do_filp_open+0x1b6/0x400 fs/namei.c:3740
do_sys_openat2+0x16d/0x4c0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb028604c34
RSP: 002b:00007fb0285f4e70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb028604c34
RDX: 00000000000a0000 RSI: 00007fb0285f4ef0 RDI: 00000000ffffff9c
RBP: 00007fb0285f4ef0 R08: 0000000000000000 R09: 00007fb0285f5700
R10: 0000000000000000 R11: 0000000000000293 R12: 00000000000a0000
R13: 00007fb0286991a4 R14: 64626e2f7665642f R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc1-syzkaller-00454-ga70385240892 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x32f/0x3c0 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+0xc71/0xfc0 kernel/hung_task.c:377
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 6.1.0-rc1-syzkaller-00454-ga70385240892 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__text_poke+0x491/0x8e0 arch/x86/kernel/alternative.c:1195
Code: 48 83 7c 24 08 00 74 01 fb 48 8b 7c 24 68 e8 c6 89 64 08 48 8b 4c 24 20 48 b8 00 00 00 00 00 fc ff df 48 c7 04 01 00 00 00 00 <48> 8b 84 24 a0 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 44 03 00
RSP: 0018:ffffc900000e79f8 EFLAGS: 00000286
RAX: dffffc0000000000 RBX: 0000000000000007 RCX: 1ffff9200001cf48
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffff8881400fb558 R08: 0000000000000000 R09: ffff8880119c8123
R10: ffffed1002339024 R11: 0000000000000001 R12: ffffffff81c89316
R13: 0000000000000001 R14: 0000000000000317 R15: ffffffff8c0d0880
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dd9dac7600 CR3: 000000000bc8e000 CR4: 0000000000350ee0
Call Trace:
text_poke arch/x86/kernel/alternative.c:1217 [inline]
text_poke_bp_batch+0x142/0x6b0 arch/x86/kernel/alternative.c:1499
text_poke_flush arch/x86/kernel/alternative.c:1670 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1667 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1677
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32f/0x410 kernel/jump_label.c:801
static_key_disable_cpuslocked+0x152/0x1b0 kernel/jump_label.c:207
static_key_disable+0x16/0x20 kernel/jump_label.c:215
toggle_allocation_gate mm/kfence/core.c:814 [inline]
toggle_allocation_gate+0x183/0x390 mm/kfence/core.c:792
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306