INFO: task systemd-udevd:10931 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-udevd state:D stack:25296 pid:10931 ppid: 2971 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
blk_mq_freeze_queue_wait+0x105/0x190 block/blk-mq.c:178
__loop_clr_fd+0x1c6/0x9b0 drivers/block/loop.c:1122
blkdev_put_whole block/bdev.c:694 [inline]
blkdev_put+0x477/0x7b0 block/bdev.c:956
blkdev_close+0x58/0x80 block/fops.c:515
__fput+0x3fc/0x870 fs/file_table.c:280
task_work_run+0x146/0x1c0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
exit_to_user_mode_prepare+0x209/0x220 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fd23cba0270
RSP: 002b:00007ffecce3dbb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007fd23cba0270
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007fd23da5a710 R08: 000055e72a3880b0 R09: 000055e72a387e00
R10: 00007fd23da5a8c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000055e72a3893e0 R14: 0000000000000003 R15: 000000000000000e
INFO: task syz-executor.5:10955 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:25296 pid:10955 ppid: 5646 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:680
__mutex_lock kernel/locking/mutex.c:740 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:792
blkdev_get_by_dev+0xfc/0xb80 block/bdev.c:819
blkdev_open+0x137/0x2f0 block/fops.c:501
do_dentry_open+0x78b/0x1020 fs/open.c:822
do_open fs/namei.c:3426 [inline]
path_openat+0x2896/0x3660 fs/namei.c:3559
do_filp_open+0x277/0x4f0 fs/namei.c:3586
do_sys_openat2+0x13b/0x500 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+0x243/0x290 fs/open.c:1239
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f76362a7a04
RSP: 002b:00007f7633869ed0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f763633e970 RCX: 00007f76362a7a04
RDX: 0000000000000002 RSI: 00007f763386a000 RDI: 00000000ffffff9c
RBP: 00007f763386a000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 0000000000000004 R14: 0000000020000a68 R15: 0000000000000007
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1dc00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6217:
#0: ffff8880218125f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:990
2 locks held by agetty/6212:
#0: ffff88801d011098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002eb32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2113
2 locks held by systemd-udevd/10931:
#0: ffff88801aada918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfa/0x7b0 block/bdev.c:914
#1: ffff88801a9ce360 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0x6d/0x9b0 drivers/block/loop.c:1106
1 lock held by syz-executor.5/10955:
#0: ffff88801aada918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0xb80 block/bdev.c:819
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc1-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 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+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2958 Comm: systemd-journal Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lock_is_held_type+0x1/0x190 kernel/locking/lockdep.c:5665
Code: 00 75 d6 48 c7 c7 60 ff 6e 8a 48 c7 c6 a0 ff 6e 8a 31 c0 e8 11 76 3c f7 0f 0b eb bd e8 78 fd ff ff 0f 1f 84 00 00 00 00 00 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00
RSP: 0018:ffffc9000b68fc10 EFLAGS: 00000002
RAX: 1ffffffff1964301 RBX: 1ffff920016d1f84 RCX: 0000000080000001
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8cb1db60
RBP: ffffc9000b68fca8 R08: dffffc0000000000 R09: fffffbfff1bfd13e
R10: fffffbfff1bfd13e R11: 0000000000000000 R12: 0000000000000000
R13: 1ffff920016d1fa8 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f530d0fa8c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f530a75c000 CR3: 000000007b217000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x89/0x130 kernel/rcu/update.c:125
trace_lock_acquire+0x59/0x190 include/trace/events/lock.h:13
lock_acquire+0xa5/0x4d0 kernel/locking/lockdep.c:5608
do_write_seqcount_begin_nested include/linux/seqlock.h:520 [inline]
do_write_seqcount_begin include/linux/seqlock.h:545 [inline]
vtime_user_exit+0xb9/0x3e0 kernel/sched/cputime.c:719
__context_tracking_exit+0x7a/0xd0 kernel/context_tracking.c:160
user_exit_irqoff include/linux/context_tracking.h:47 [inline]
__enter_from_user_mode kernel/entry/common.c:22 [inline]
syscall_enter_from_user_mode+0x199/0x1b0 kernel/entry/common.c:104
do_syscall_64+0x25/0xd0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f530c392f17
Code: ff ff ff 48 8b 4d a0 0f b7 51 fe 48 8b 4d a8 66 89 54 08 fe e9 1a ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 b8 27 00 00 00 0f 05 0f 1f 84 00 00 00 00 00 b8 6e 00 00 00 0f 05 c3 0f 1f 84 00 00
RSP: 002b:00007ffd8b063c68 EFLAGS: 00000202 ORIG_RAX: 0000000000000027
RAX: ffffffffffffffda RBX: 000055f7c1d871e0 RCX: 00007f530c392f17
RDX: 0000000000000000 RSI: 00007ffd8b063d80 RDI: 000055f7c1d871e0
RBP: 00007ffd8b063d80 R08: b8178435b1658b14 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000b8e
R13: 00007ffd8b063d28 R14: 00007ffd8b063d80 R15: 00007ffd8b064318
----------------
Code disassembly (best guess):
0: 00 75 d6 add %dh,-0x2a(%rbp)
3: 48 c7 c7 60 ff 6e 8a mov $0xffffffff8a6eff60,%rdi
a: 48 c7 c6 a0 ff 6e 8a mov $0xffffffff8a6effa0,%rsi
11: 31 c0 xor %eax,%eax
13: e8 11 76 3c f7 callq 0xf73c7629
18: 0f 0b ud2
1a: eb bd jmp 0xffffffd9
1c: e8 78 fd ff ff callq 0xfffffd99
21: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
28: 00
29: 55 push %rbp
* 2a: 41 57 push %r15 <-- trapping instruction
2c: 41 56 push %r14
2e: 41 55 push %r13
30: 41 54 push %r12
32: 53 push %rbx
33: 48 83 ec 10 sub $0x10,%rsp
37: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax
3e: 00 00