INFO: task udevd:7611 blocked for more than 143 seconds.
Not tainted 5.16.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:26384 pid: 7611 ppid: 2969 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
io_schedule+0xee/0x170 kernel/sched/core.c:8371
folio_wait_bit_common+0x4f2/0xa60 mm/filemap.c:1371
folio_wait_bit mm/filemap.c:1431 [inline]
folio_wait_locked include/linux/pagemap.h:851 [inline]
folio_wait_locked include/linux/pagemap.h:848 [inline]
wait_on_page_locked include/linux/pagemap.h:863 [inline]
wait_on_page_read mm/filemap.c:3428 [inline]
do_read_cache_page+0x986/0x11a0 mm/filemap.c:3471
read_mapping_page include/linux/pagemap.h:651 [inline]
read_part_sector+0xf6/0x5b0 block/partitions/core.c:728
adfspart_check_ICS+0x9d/0xc90 block/partitions/acorn.c:360
check_partition block/partitions/core.c:149 [inline]
blk_add_partitions block/partitions/core.c:613 [inline]
bdev_disk_changed+0x759/0x1100 block/partitions/core.c:699
blkdev_get_whole+0x206/0x2d0 block/bdev.c:684
blkdev_get_by_dev.part.0+0x5c6/0xc70 block/bdev.c:826
blkdev_get_by_dev+0x6b/0x80 block/bdev.c:860
blkdev_open+0x154/0x2e0 block/fops.c:501
do_dentry_open+0x4c8/0x1250 fs/open.c:822
do_open fs/namei.c:3426 [inline]
path_openat+0x1cad/0x2750 fs/namei.c:3559
do_filp_open+0x1aa/0x400 fs/namei.c:3586
do_sys_openat2+0x16d/0x4d0 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_sys_openat fs/open.c:1244 [inline]
__se_sys_openat fs/open.c:1239 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1239
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+0x44/0xae
RIP: 0033:0x7f27a6a65697
RSP: 002b:00007ffcbee57c40 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055a546d16bb0 RCX: 00007f27a6a65697
RDX: 00000000000a0800 RSI: 000055a546c2c220 RDI: 00000000ffffff9c
RBP: 000055a546c2c220 R08: 0000000000000001 R09: 00007ffcbee68080
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055a546c1ba90 R14: 0000000000000001 R15: 000055a546c12910
INFO: task syz-executor.0:22420 blocked for more than 143 seconds.
Not tainted 5.16.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28024 pid:22420 ppid: 3627 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
blkdev_put+0x99/0x980 block/bdev.c:915
blkdev_close+0x6a/0x80 block/fops.c:515
__fput+0x286/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
exit_task_work include/linux/task_work.h:32 [inline]
do_exit+0xc14/0x2b40 kernel/exit.c:832
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x2220 kernel/signal.c:2852
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fc29fad3e99
RSP: 002b:00007fc29e449168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffe00 RBX: 00007fc29fbe6f60 RCX: 00007fc29fad3e99
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000004
RBP: 00007fc29fb2dff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff889de7ef R14: 00007fc29e449300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by getty/3276:
#0: ffff88814a630098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
1 lock held by udevd/7611:
#0: ffff88801aa74918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xc70 block/bdev.c:817
1 lock held by syz-executor.0/22420:
#0: ffff88801aa74918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x99/0x980 block/bdev.c:915
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 24571 Comm: kworker/u4:3 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:smp_call_function_many_cond+0x916/0xc20 kernel/smp.c:932
Code: 00 00 e8 9d 73 0b 00 48 8b 6c 24 60 44 89 fb be 08 00 00 00 48 89 d8 48 c1 f8 06 48 8d 7c c5 00 e8 df 3b 52 00 48 0f ab 5d 00 <83> 44 24 68 01 44 89 7c 24 6c e9 82 fd ff ff e8 66 73 0b 00 8b 5c
RSP: 0018:ffffc90002faf9f8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff816c2f41
RDX: ffffed1017387573 RSI: 0000000000000008 RDI: ffff8880b9c3ab90
RBP: ffff8880b9c3ab90 R08: 0000000000000001 R09: ffff8880b9c3ab97
R10: ffffed1017387572 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7ef41ac998 CR3: 000000000b88e000 CR4: 0000000000350ef0
Call Trace:
on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1135
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1112 [inline]
text_poke_bp_batch+0x47d/0x560 arch/x86/kernel/alternative.c:1366
text_poke_flush arch/x86/kernel/alternative.c:1451 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1448 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1458
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1d5/0x430 kernel/jump_label.c:830
static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate mm/kfence/core.c:732 [inline]
toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:724
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: e8 9d 73 0b 00 callq 0xb73a4
7: 48 8b 6c 24 60 mov 0x60(%rsp),%rbp
c: 44 89 fb mov %r15d,%ebx
f: be 08 00 00 00 mov $0x8,%esi
14: 48 89 d8 mov %rbx,%rax
17: 48 c1 f8 06 sar $0x6,%rax
1b: 48 8d 7c c5 00 lea 0x0(%rbp,%rax,8),%rdi
20: e8 df 3b 52 00 callq 0x523c04
25: 48 0f ab 5d 00 bts %rbx,0x0(%rbp)
* 2a: 83 44 24 68 01 addl $0x1,0x68(%rsp) <-- trapping instruction
2f: 44 89 7c 24 6c mov %r15d,0x6c(%rsp)
34: e9 82 fd ff ff jmpq 0xfffffdbb
39: e8 66 73 0b 00 callq 0xb73a4
3e: 8b .byte 0x8b
3f: 5c pop %rsp