INFO: task udevd:5138 blocked for more than 143 seconds.
Not tainted 6.2.0-rc2-syzkaller-00320-g93928d485d9d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:24032 pid:5138 ppid:4421 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x9d1/0xe40 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
io_schedule+0x83/0x100 kernel/sched/core.c:8811
folio_wait_bit_common+0x8ca/0x1390 mm/filemap.c:1297
__folio_lock mm/filemap.c:1660 [inline]
folio_lock include/linux/pagemap.h:938 [inline]
__filemap_get_folio+0x566/0x1230 mm/filemap.c:1932
truncate_inode_pages_range+0x5a4/0x1650 mm/truncate.c:377
kill_bdev block/bdev.c:76 [inline]
blkdev_flush_mapping+0x153/0x2c0 block/bdev.c:662
blkdev_put_whole block/bdev.c:693 [inline]
blkdev_put+0x4a5/0x730 block/bdev.c:953
blkdev_close+0x55/0x80 block/fops.c:492
__fput+0x3ba/0x880 fs/file_table.c:320
task_work_run+0x243/0x300 kernel/task_work.c:179
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0x644/0x2150 kernel/exit.c:867
do_group_exit+0x1fd/0x2b0 kernel/exit.c:1012
get_signal+0x1755/0x1820 kernel/signal.c:2859
arch_do_signal_or_restart+0x8d/0x5f0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop+0x74/0x160 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4982325697
RSP: 002b:00007ffee9812250 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: 0000000000000008 RBX: 00005611a429a1a0 RCX: 00007f4982325697
RDX: 00000000000a0800 RSI: 00005611a428b3c0 RDI: 00000000ffffff9c
RBP: 00005611a428b3c0 R08: 0000000000000001 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 00005611a427db80 R14: 0000000000000001 R15: 00005611a4274910
INFO: task syz-executor.0:5196 blocked for more than 143 seconds.
Not tainted 6.2.0-rc2-syzkaller-00320-g93928d485d9d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27336 pid:5196 ppid:5176 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x9d1/0xe40 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6690
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
blkdev_get_by_dev+0xfe/0xa60 block/bdev.c:813
blkdev_open+0x128/0x2e0 block/fops.c:478
do_dentry_open+0x85f/0x11b0 fs/open.c:882
do_open fs/namei.c:3557 [inline]
path_openat+0x25cc/0x2de0 fs/namei.c:3714
do_filp_open+0x275/0x500 fs/namei.c:3741
do_sys_openat2+0x13b/0x500 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+0x243/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x418484
RSP: 002b:00007fa349b63cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000418484
RDX: 0000000000000000 RSI: 00007fa349b63d60 RDI: 00000000ffffff9c
RBP: 00007fa349b63d60 R08: 0000000000000000 R09: 002364626e2f7665
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007fffe4ba24af R14: 00007fa349b64300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d5239d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d5241d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d523800 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4735:
#0: ffff888028c2f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2177
1 lock held by udevd/5138:
#0: ffff88801ef104c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x100/0x730 block/bdev.c:911
1 lock held by syz-executor.0/5196:
#0: ffff88801ef104c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfe/0xa60 block/bdev.c:813
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc2-syzkaller-00320-g93928d485d9d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x19b/0x3e0 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+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3230 Comm: kworker/u4:5 Not tainted 6.2.0-rc2-syzkaller-00320-g93928d485d9d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_preemption_disabled+0x14/0x120 lib/smp_processor_id.c:13
Code: ff cc cc cc cc cc 48 c7 c7 20 7a 69 8b 48 c7 c6 60 7a 69 8b eb 00 41 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 <48> 89 44 24 08 65 8b 1d 7c 6b 3d 75 65 8b 05 71 6b 3d 75 a9 ff ff
RSP: 0018:ffffc9000cfd7928 EFLAGS: 00000286
RAX: 0e37b56dd6b67600 RBX: 1ffff920019faf30 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8b697a60 RDI: ffffffff8b697a20
RBP: ffffc9000cfd7a08 R08: dffffc0000000000 R09: fffffbfff1d604b6
R10: fffffbfff1d604b6 R11: 1ffffffff1d604b5 R12: dffffc0000000000
R13: 1ffff920019faf54 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91ae9ed990 CR3: 000000002acd0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lockdep_current_cpu_online+0x33/0x120 kernel/rcu/tree.c:760
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_sched_held+0x74/0x130 kernel/rcu/update.c:123
trace_lock_acquire+0x98/0x260 include/trace/events/lock.h:24
lock_acquire+0xa5/0x400 kernel/locking/lockdep.c:5639
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:325
rcu_read_lock include/linux/rcupdate.h:764 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xc8/0x5b0 net/batman-adv/network-coding.c:719
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308