INFO: task systemd-udevd:2972 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:22616 pid: 2972 ppid: 1 flags:0x00000000
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_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: 0033:0x7f8dddf05840
RSP: 002b:00007ffe9480e3a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffe9480e480 RCX: 00007f8dddf05840
RDX: 000056402947efe3 RSI: 00000000000a0800 RDI: 0000564029bb5f90
RBP: 00007ffe9480e900 R08: 000056402947e670 R09: 0000000000000010
R10: 0000564029af51d0 R11: 0000000000000246 R12: 00007ffe9480e550
R13: 00005640299b9010 R14: 0000564029ba5020 R15: 00007ffe9480e420
INFO: task syz-executor.3:16054 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.3 state:D stack:27888 pid:16054 ppid: 10498 flags:0x00000004
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
blk_mq_freeze_queue_wait+0x112/0x160 block/blk-mq.c:178
__loop_clr_fd+0x1ae/0x1070 drivers/block/loop.c:1122
loop_clr_fd drivers/block/loop.c:1237 [inline]
lo_ioctl+0x398/0x17c0 drivers/block/loop.c:1562
blkdev_ioctl+0x37a/0x800 block/ioctl.c:609
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
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: 0033:0x7f77362588a7
RSP: 002b:00007f77337cdfa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000200004c0 RCX: 00007f77362588a7
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004
RBP: 00007f77337ce6bc R08: 00007f77337ce040 R09: 0000000020000440
R10: 0000000000008000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 00007f77337ce000 R15: 00000000200008c0
INFO: task syz-executor.3:16100 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.3 state:D stack:28272 pid:16100 ppid: 10498 flags:0x00000004
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_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_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: 0033:0x7f773620ba04
RSP: 002b:00007f77337aced0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f77362a2970 RCX: 00007f773620ba04
RDX: 0000000000000002 RSI: 00007f77337ad000 RDI: 00000000ffffff9c
RBP: 00007f77337ad000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 0000000000000003 R14: 0000000020000550 R15: 0000000000000006
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by systemd-udevd/2972:
#0: ffff88801a852918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
1 lock held by in:imklog/6215:
#0: ffff88802331a0f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
2 locks held by systemd-udevd/409:
#0: ffff88801a852918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
#1: ffff88801a84e360 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_open+0x75/0x120 drivers/block/loop.c:1733
1 lock held by syz-executor.3/16054:
#0: ffff88801a84e360 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0x7a/0x1070 drivers/block/loop.c:1106
1 lock held by syz-executor.3/16100:
#0: ffff88801a852918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
=============================================
NMI backtrace for cpu 1
CPU: 1 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+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: 21414 Comm: kworker/u4:10 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:214 [inline]
RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:135 [inline]
RIP: 0010:hlock_class kernel/locking/lockdep.c:199 [inline]
RIP: 0010:mark_lock+0xef/0x17b0 kernel/locking/lockdep.c:4583
Code: 08 00 00 41 0f b7 55 20 66 81 e2 ff 1f 44 0f b7 f2 be 08 00 00 00 4c 89 f0 48 c1 f8 06 48 8d 3c c5 00 1a f7 8f e8 81 24 62 00 <4c> 0f a3 35 19 e9 9a 0e 0f 83 03 01 00 00 4b 8d 04 76 48 c1 e0 06
RSP: 0018:ffffc9000512fa48 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff92000a25f50 RCX: ffffffff815c30df
RDX: fffffbfff1fee35c RSI: 0000000000000008 RDI: ffffffff8ff71ad8
RBP: 0000000000000004 R08: 0000000000000000 R09: ffffffff8ff71adf
R10: fffffbfff1fee35b R11: 0000000000000000 R12: 0000000000000002
R13: ffff88801e5aa760 R14: 00000000000006c5 R15: ffff88801e5aa780
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff6621d9018 CR3: 0000000018661000 CR4: 0000000000350ef0
Call Trace:
mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:4206
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4224 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4292 [inline]
lockdep_hardirqs_on_prepare+0x135/0x400 kernel/locking/lockdep.c:4244
trace_hardirqs_on+0x5b/0x1c0 kernel/trace/trace_preemptirq.c:49
__local_bh_enable_ip+0xa0/0x120 kernel/softirq.c:388
spin_unlock_bh include/linux/spinlock.h:394 [inline]
batadv_nc_purge_paths+0x2a5/0x3a0 net/batman-adv/network-coding.c:475
batadv_nc_worker+0x930/0xfa0 net/batman-adv/network-coding.c:726
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), 1 bytes skipped:
0: 00 00 add %al,(%rax)
2: 41 0f b7 55 20 movzwl 0x20(%r13),%edx
7: 66 81 e2 ff 1f and $0x1fff,%dx
c: 44 0f b7 f2 movzwl %dx,%r14d
10: be 08 00 00 00 mov $0x8,%esi
15: 4c 89 f0 mov %r14,%rax
18: 48 c1 f8 06 sar $0x6,%rax
1c: 48 8d 3c c5 00 1a f7 lea -0x7008e600(,%rax,8),%rdi
23: 8f
24: e8 81 24 62 00 callq 0x6224aa
* 29: 4c 0f a3 35 19 e9 9a bt %r14,0xe9ae919(%rip) # 0xe9ae94a <-- trapping instruction
30: 0e
31: 0f 83 03 01 00 00 jae 0x13a
37: 4b 8d 04 76 lea (%r14,%r14,2),%rax
3b: 48 c1 e0 06 shl $0x6,%rax