INFO: task systemd-udevd:5454 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-next-20211116-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-udevd state:D stack:26912 pid: 5454 ppid: 2973 flags:0x00004000
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
lo_release+0x160/0x1f0 drivers/block/loop.c:1768
blkdev_put_whole block/bdev.c:694 [inline]
blkdev_put+0x2fb/0x9e0 block/bdev.c:956
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
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: 0033:0x7f45afb9f270
RSP: 002b:00007ffef8d74928 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f45afb9f270
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007f45b0a59710 R08: 000055fa45c7b0d0 R09: 000055fa45c7ae00
R10: 00007f45b0a598c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000055fa45c67e40 R14: 0000000000000003 R15: 000000000000000e
INFO: task syz-executor.0:5493 can't die for more than 143 seconds.
task:syz-executor.0 state:D stack:27160 pid: 5493 ppid: 2468 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
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+0x24e/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: 0033:0x7f16831e6a04
RSP: 002b:00007f16807a8cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00007f16831e6a04
RDX: 0000000000103382 RSI: 00007f16807a8d60 RDI: 00000000ffffff9c
RBP: 00007f16807a8d60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000103382
R13: 00007ffcb8cbc3df R14: 00007f16807a9300 R15: 0000000000022000
INFO: task syz-executor.0:5493 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-next-20211116-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27160 pid: 5493 ppid: 2468 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
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+0x24e/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: 0033:0x7f16831e6a04
RSP: 002b:00007f16807a8cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00007f16831e6a04
RDX: 0000000000103382 RSI: 00007f16807a8d60 RDI: 00000000ffffff9c
RBP: 00007f16807a8d60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000103382
R13: 00007ffcb8cbc3df R14: 00007f16807a9300 R15: 0000000000022000
INFO: task syz-executor.1:5516 can't die for more than 144 seconds.
task:syz-executor.1 state:D stack:28328 pid: 5516 ppid: 3339 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
bd_prepare_to_claim+0x277/0x300 block/bdev.c:593
blkdev_get_by_dev.part.0+0x21b/0xb50 block/bdev.c:812
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: 0033:0x7fd83b26ea04
RSP: 002b:00007fd83880fcc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00007fd83b26ea04
RDX: 0000000000103382 RSI: 00007fd83880fd60 RDI: 00000000ffffff9c
RBP: 00007fd83880fd60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000103382
R13: 00007fffde12956f R14: 00007fd838810300 R15: 0000000000022000
INFO: task syz-executor.1:5516 blocked for more than 144 seconds.
Not tainted 5.16.0-rc1-next-20211116-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28328 pid: 5516 ppid: 3339 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
bd_prepare_to_claim+0x277/0x300 block/bdev.c:593
blkdev_get_by_dev.part.0+0x21b/0xb50 block/bdev.c:812
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: 0033:0x7fd83b26ea04
RSP: 002b:00007fd83880fcc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00007fd83b26ea04
RDX: 0000000000103382 RSI: 00007fd83880fd60 RDI: 00000000ffffff9c
RBP: 00007fd83880fd60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000103382
R13: 00007fffde12956f R14: 00007fd838810300 R15: 0000000000022000
INFO: task syz-executor.3:5521 can't die for more than 144 seconds.
task:syz-executor.3 state:D stack:28328 pid: 5521 ppid: 28022 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
bd_prepare_to_claim+0x277/0x300 block/bdev.c:593
blkdev_get_by_dev.part.0+0x21b/0xb50 block/bdev.c:812
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: 0033:0x7f7d4b277a04
RSP: 002b:00007f7d48818cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00007f7d4b277a04
RDX: 0000000000103382 RSI: 00007f7d48818d60 RDI: 00000000ffffff9c
RBP: 00007f7d48818d60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000103382
R13: 00007ffe8c61004f R14: 00007f7d48819300 R15: 0000000000022000
INFO: task syz-executor.3:5521 blocked for more than 145 seconds.
Not tainted 5.16.0-rc1-next-20211116-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28328 pid: 5521 ppid: 28022 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
bd_prepare_to_claim+0x277/0x300 block/bdev.c:593
blkdev_get_by_dev.part.0+0x21b/0xb50 block/bdev.c:812
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: 0033:0x7f7d4b277a04
RSP: 002b:00007f7d48818cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00007f7d4b277a04
RDX: 0000000000103382 RSI: 00007f7d48818d60 RDI: 00000000ffffff9c
RBP: 00007f7d48818d60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000103382
R13: 00007ffe8c61004f R14: 00007f7d48819300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb83b20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6363:
#0: ffff888011a03c70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
2 locks held by agetty/6454:
#0: ffff88801cf8e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002ac82e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
3 locks held by kworker/u4:17/9474:
5 locks held by kworker/u4:4/24458:
2 locks held by systemd-udevd/5454:
#0: ffff88801a99f918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x97/0x9e0 block/bdev.c:914
#1: ffff88801a99b360 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_release+0x4d/0x1f0 drivers/block/loop.c:1748
1 lock held by syz-executor.0/5493:
#0: ffff88801a99f918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x24e/0xb50 block/bdev.c:819
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc1-next-20211116-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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 24458 Comm: kworker/u4:4 Not tainted 5.16.0-rc1-next-20211116-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:mark_usage kernel/locking/lockdep.c:4526 [inline]
RIP: 0010:__lock_acquire+0x897/0x54a0 kernel/locking/lockdep.c:4981
Code: 03 0f 8e 09 49 00 00 41 8b b5 48 0a 00 00 85 f6 74 18 ba 06 00 00 00 4c 89 e6 4c 89 ef e8 e1 da ff ff 85 c0 0f 84 8f 05 00 00 08 00 00 00 4c 89 e6 4c 89 ef e8 c9 da ff ff 85 c0 0f 84 77 05
RSP: 0018:ffffc90003dcfa60 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 00000000000006c9 RCX: ffffffff815ca43d
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ffc9598
RBP: 0000000000000004 R08: 0000000000000000 R09: ffffffff8ff77adf
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888019c0a7f8
R13: ffff888019c09d40 R14: ffff888019c0a7a8 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ab6a55000 CR3: 000000000b88e000 CR4: 00000000003506f0
Call Trace:
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]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:723
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: 03 0f add (%rdi),%ecx
2: 8e 09 mov (%rcx),%cs
4: 49 00 00 rex.WB add %al,(%r8)
7: 41 8b b5 48 0a 00 00 mov 0xa48(%r13),%esi
e: 85 f6 test %esi,%esi
10: 74 18 je 0x2a
12: ba 06 00 00 00 mov $0x6,%edx
17: 4c 89 e6 mov %r12,%rsi
1a: 4c 89 ef mov %r13,%rdi
1d: e8 e1 da ff ff callq 0xffffdb03
22: 85 c0 test %eax,%eax
24: 0f 84 8f 05 00 00 je 0x5b9
* 2a: ba 08 00 00 00 mov $0x8,%edx <-- trapping instruction
2f: 4c 89 e6 mov %r12,%rsi
32: 4c 89 ef mov %r13,%rdi
35: e8 c9 da ff ff callq 0xffffdb03
3a: 85 c0 test %eax,%eax
3c: 0f .byte 0xf
3d: 84 77 05 test %dh,0x5(%rdi)