INFO: task syz-executor.3:6541 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-next-20211118-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23928 pid: 6541 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4987 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6268
schedule+0xd2/0x260 kernel/sched/core.c:6341
blk_mq_freeze_queue_wait+0x112/0x160 block/blk-mq.c:178
__loop_clr_fd+0x1ae/0x1070 drivers/block/loop.c:1122
lo_release+0x1ac/0x1f0 drivers/block/loop.c:1761
blkdev_put_whole block/bdev.c:694 [inline]
blkdev_put+0x2fb/0x9e0 block/bdev.c:956
deactivate_locked_super+0x94/0x160 fs/super.c:335
deactivate_super+0xad/0xd0 fs/super.c:366
cleanup_mnt+0x3a2/0x540 fs/namespace.c:1137
task_work_run+0xdd/0x1a0 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+0x27e/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: 0033:0x7f0b33604f57
RSP: 002b:00007fff76ee2838 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0b33604f57
RDX: 00007fff76ee290a RSI: 000000000000000a RDI: 00007fff76ee2900
RBP: 00007fff76ee2900 R08: 00000000ffffffff R09: 00007fff76ee26d0
R10: 0000555556839903 R11: 0000000000000246 R12: 00007f0b3365d105
R13: 00007fff76ee39c0 R14: 0000555556839810 R15: 00007fff76ee3a00
INFO: task systemd-udevd:10176 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-next-20211118-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-udevd state:D stack:27048 pid:10176 ppid: 2972 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:4987 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6268
schedule+0xd2/0x260 kernel/sched/core.c:6341
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6400
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
blkdev_get_by_dev+0x6b/0x80 block/bdev.c:859
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_open fs/open.c:1236 [inline]
__se_sys_open fs/open.c:1232 [inline]
__x64_sys_open+0x119/0x1c0 fs/open.c:1232
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: 0033:0x7fddcf100840
RSP: 002b:00007ffd47af2858 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00005644fa806a20 RCX: 00007fddcf100840
RDX: 00005644f9eb4fe3 RSI: 00000000000a0800 RDI: 00005644fa800870
RBP: 00007ffd47af29d0 R08: 00005644f9eb4670 R09: 0000000000000010
R10: 00005644f9eb4d0c R11: 0000000000000246 R12: 00007ffd47af2920
R13: 00005644fa800a10 R14: 0000000000000003 R15: 000000000000000e
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83ba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6223:
#0: ffff8880798cc870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
2 locks held by syz-executor.3/6541:
#0: ffff88801a852918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x97/0x9e0 block/bdev.c:914
#1: ffff88801a81e360 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0x7a/0x1070 drivers/block/loop.c:1106
1 lock held by systemd-udevd/10176:
#0: ffff88801a852918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc1-next-20211118-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:254 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:339
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2967 Comm: systemd-journal Not tainted 5.16.0-rc1-next-20211118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hlock_class kernel/locking/lockdep.c:211 [inline]
RIP: 0010:mark_lock+0xfd/0x17b0 kernel/locking/lockdep.c:4583
Code: 0f b7 f2 be 08 00 00 00 4c 89 f0 48 c1 f8 06 48 8d 3c c5 00 2a f7 8f e8 11 3a 62 00 4c 0f a3 35 69 f3 9a 0e 0f 83 03 01 00 00 <4b> 8d 04 76 48 c1 e0 06 48 05 20 2e f7 8f 48 8d 78 50 48 ba 00 00
RSP: 0018:ffffc90001a8f750 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 1ffff92000351ef1 RCX: ffffffff815c368f
RDX: fffffbfff1fee541 RSI: 0000000000000008 RDI: ffffffff8ff72a00
RBP: 0000000000000200 R08: 0000000000000000 R09: ffffffff8ff72a07
R10: fffffbfff1fee540 R11: 000000000008808a R12: 0000000000000009
R13: ffff88807ac56250 R14: 0000000000000029 R15: ffff88807ac56270
FS: 00007f96042a78c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9601769010 CR3: 00000000195b4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_usage kernel/locking/lockdep.c:4526 [inline]
__lock_acquire+0x8a7/0x54a0 kernel/locking/lockdep.c:4981
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:688 [inline]
is_bpf_text_address+0x36/0x170 kernel/bpf/core.c:715
kernel_text_address kernel/extable.c:124 [inline]
kernel_text_address+0x39/0x80 kernel/extable.c:93
__kernel_text_address+0x9/0x30 kernel/extable.c:78
unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
metadata_update_state+0xb9/0x2b0 mm/kfence/core.c:288
kfence_guarded_free+0x108/0x930 mm/kfence/core.c:490
__kfence_free+0x70/0x150 mm/kfence/core.c:947
do_slab_free mm/slub.c:3501 [inline]
slab_free mm/slub.c:3514 [inline]
kmem_cache_free+0x4f4/0x5e0 mm/slub.c:3529
putname fs/namei.c:270 [inline]
putname+0xfe/0x140 fs/namei.c:256
do_sys_openat2+0x153/0x4d0 fs/open.c:1221
do_sys_open fs/open.c:1228 [inline]
__do_sys_open fs/open.c:1236 [inline]
__se_sys_open fs/open.c:1232 [inline]
__x64_sys_open+0x119/0x1c0 fs/open.c:1232
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: 0033:0x7f9603836840
Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24
RSP: 002b:00007ffff0273b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffff0273ea0 RCX: 00007f9603836840
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 0000555f596fb6a0
RBP: 000000000000000d R08: 000000000000c0c1 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000555f596ef040 R14: 00007ffff0273e60 R15: 0000555f596fb9d0
----------------
Code disassembly (best guess):
0: 0f b7 f2 movzwl %dx,%esi
3: be 08 00 00 00 mov $0x8,%esi
8: 4c 89 f0 mov %r14,%rax
b: 48 c1 f8 06 sar $0x6,%rax
f: 48 8d 3c c5 00 2a f7 lea -0x7008d600(,%rax,8),%rdi
16: 8f
17: e8 11 3a 62 00 callq 0x623a2d
1c: 4c 0f a3 35 69 f3 9a bt %r14,0xe9af369(%rip) # 0xe9af38d
23: 0e
24: 0f 83 03 01 00 00 jae 0x12d
* 2a: 4b 8d 04 76 lea (%r14,%r14,2),%rax <-- trapping instruction
2e: 48 c1 e0 06 shl $0x6,%rax
32: 48 05 20 2e f7 8f add $0xffffffff8ff72e20,%rax
38: 48 8d 78 50 lea 0x50(%rax),%rdi
3c: 48 rex.W
3d: ba .byte 0xba