INFO: task syz-executor.4:19467 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.4 state:D stack:27704 pid:19467 ppid: 6520 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_set_status+0x440/0x930 drivers/block/loop.c:1264
loop_set_status_old+0x148/0x1b0 drivers/block/loop.c:1396
lo_ioctl+0x3e9/0x17c0 drivers/block/loop.c:1566
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: 0033:0x7fbd5f671ae9
RSP: 002b:00007fbd5cbe7188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fbd5f784f60 RCX: 00007fbd5f671ae9
RDX: 00000000200002c0 RSI: 0000000000004c02 RDI: 0000000000000004
RBP: 00007fbd5f6cbf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd388f072f R14: 00007fbd5cbe7300 R15: 0000000000022000
INFO: task syz-executor.4:19479 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.4 state:D stack:26320 pid:19479 ppid: 6520 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
__bio_queue_enter+0x3c5/0x6a0 block/blk-core.c:441
bio_queue_enter block/blk.h:91 [inline]
blk_mq_get_request block/blk-mq.c:2588 [inline]
blk_mq_submit_bio+0x4ae/0x22c0 block/blk-mq.c:2632
__submit_bio block/blk-core.c:849 [inline]
__submit_bio_noacct_mq block/blk-core.c:924 [inline]
submit_bio_noacct block/blk-core.c:950 [inline]
submit_bio_noacct+0x82c/0xa20 block/blk-core.c:939
submit_bio block/blk-core.c:1011 [inline]
submit_bio+0x1ea/0x430 block/blk-core.c:969
__blkdev_direct_IO_simple+0x4a2/0x860 block/fops.c:103
blkdev_direct_IO block/fops.c:383 [inline]
blkdev_direct_IO+0x7fb/0x1740 block/fops.c:373
generic_file_read_iter+0x251/0x5a0 mm/filemap.c:2769
blkdev_read_iter+0xf8/0x1d0 block/fops.c:583
call_read_iter include/linux/fs.h:2156 [inline]
generic_file_splice_read+0x453/0x6d0 fs/splice.c:311
do_splice_to+0x1bf/0x250 fs/splice.c:796
splice_direct_to_actor+0x2c2/0x8c0 fs/splice.c:870
do_splice_direct+0x1b3/0x280 fs/splice.c:979
do_sendfile+0xaf2/0x1250 fs/read_write.c:1245
__do_sys_sendfile64 fs/read_write.c:1310 [inline]
__se_sys_sendfile64 fs/read_write.c:1296 [inline]
__x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1296
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: 0033:0x7fbd5f671ae9
RSP: 002b:00007fbd5cbc6188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fbd5f785020 RCX: 00007fbd5f671ae9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007fbd5f6cbf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024002da8 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd388f072f R14: 00007fbd5cbc6300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6213:
#0: ffff88807219e0f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
4 locks held by kworker/0:11/10581:
#0: ffff8880b9c39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9c279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a6/0x490 kernel/sched/psi.c:880
#2: ffff8880b9c28298 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5a/0x1f0 kernel/time/timer.c:946
#3: ffffffff90763388 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:661
2 locks held by kworker/u4:8/12629:
#0: ffff8880b9c39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffffc90005a17db0 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
2 locks held by systemd-udevd/19226:
#0: ffff88801a9fd918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
#1: ffff88801a9f9360 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_open+0x75/0x120 drivers/block/loop.c:1733
1 lock held by syz-executor.4/19467:
#0: ffff88801a9f9360 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x2a/0x930 drivers/block/loop.c:1248
=============================================
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:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 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: 12629 Comm: kworker/u4:8 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:match_held_lock+0x14/0xc0 kernel/locking/lockdep.c:5089
Code: 89 e8 0f 79 bc ff e8 9e e8 cc ff 31 c0 5d c3 0f 1f 80 00 00 00 00 53 48 89 fb 48 83 ec 08 48 39 77 10 74 6a 66 f7 47 22 f0 ff <74> 5a 48 8b 46 08 48 89 f7 48 85 c0 74 42 8b 15 58 1e fa 06 85 d2
RSP: 0018:ffffc90005a17b60 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88803d490a60 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8bb839a0 RDI: ffff88803d490a60
RBP: ffffffff8bb839a0 R08: 0000000000000000 R09: ffffffff8d9172d7
R10: fffffbfff1b22e5a R11: 0000000000000000 R12: ffff88803d490000
R13: ffff88803d490a60 R14: 00000000ffffffff R15: ffff88803d490a60
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa244992000 CR3: 000000007fad2000 CR4: 0000000000350ef0
Call Trace:
__lock_is_held kernel/locking/lockdep.c:5380 [inline]
lock_is_held_type+0xa7/0x140 kernel/locking/lockdep.c:5680
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x522/0x720 kernel/locking/lockdep.c:5648
rcu_lock_release include/linux/rcupdate.h:273 [inline]
rcu_read_unlock include/linux/rcupdate.h:721 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:416 [inline]
batadv_nc_worker+0x86b/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), 1 bytes skipped:
0: e8 0f 79 bc ff callq 0xffbc7914
5: e8 9e e8 cc ff callq 0xffcce8a8
a: 31 c0 xor %eax,%eax
c: 5d pop %rbp
d: c3 retq
e: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
15: 53 push %rbx
16: 48 89 fb mov %rdi,%rbx
19: 48 83 ec 08 sub $0x8,%rsp
1d: 48 39 77 10 cmp %rsi,0x10(%rdi)
21: 74 6a je 0x8d
23: 66 f7 47 22 f0 ff testw $0xfff0,0x22(%rdi)
* 29: 74 5a je 0x85 <-- trapping instruction
2b: 48 8b 46 08 mov 0x8(%rsi),%rax
2f: 48 89 f7 mov %rsi,%rdi
32: 48 85 c0 test %rax,%rax
35: 74 42 je 0x79
37: 8b 15 58 1e fa 06 mov 0x6fa1e58(%rip),%edx # 0x6fa1e95
3d: 85 d2 test %edx,%edx