INFO: task syz-executor.5:13368 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:22448 pid:13368 ppid: 24894 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
blk_mq_freeze_queue_wait+0x105/0x190 block/blk-mq.c:178
loop_set_status+0x183/0xa50 drivers/block/loop.c:1264
lo_ioctl+0xbc9/0x1f40
blkdev_ioctl+0x3ac/0x790 block/ioctl.c:609
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
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: 0033:0x7fa9011a8ae9
RSP: 002b:00007fa8fe71e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa9012bbf60 RCX: 00007fa9011a8ae9
RDX: 0000000020000780 RSI: 0000000000004c02 RDI: 0000000000000007
RBP: 00007fa901202f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffff857d3df R14: 00007fa8fe71e300 R15: 0000000000022000
INFO: task syz-executor.5:13372 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:24496 pid:13372 ppid: 24894 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
__bio_queue_enter+0x35a/0x690 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+0x7c9/0x2750 block/blk-mq.c:2632
__submit_bio+0x15d/0x330 block/blk-core.c:849
__submit_bio_noacct_mq block/blk-core.c:924 [inline]
submit_bio_noacct+0x844/0x9e0 block/blk-core.c:950
submit_bio+0x2d2/0x520 block/blk-core.c:1011
submit_bh fs/buffer.c:3060 [inline]
block_read_full_page+0xeda/0x1230 fs/buffer.c:2339
filemap_read_page+0x174/0x400 mm/filemap.c:2391
filemap_update_page mm/filemap.c:2470 [inline]
filemap_get_pages+0x150f/0x1ac0 mm/filemap.c:2579
filemap_read+0x3f6/0x10f0 mm/filemap.c:2642
call_read_iter include/linux/fs.h:2156 [inline]
generic_file_splice_read+0x482/0x760 fs/splice.c:311
do_splice_to fs/splice.c:796 [inline]
splice_direct_to_actor+0x45f/0xd00 fs/splice.c:870
do_splice_direct+0x291/0x3e0 fs/splice.c:979
do_sendfile+0x6fe/0x1040 fs/read_write.c:1245
__do_sys_sendfile64 fs/read_write.c:1310 [inline]
__se_sys_sendfile64+0x171/0x1d0 fs/read_write.c:1296
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: 0033:0x7fa9011a8ae9
RSP: 002b:00007fa8fe6fd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fa9012bc020 RCX: 00007fa9011a8ae9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000007
RBP: 00007fa901202f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024002da8 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffff857d3df R14: 00007fa8fe6fd300 R15: 0000000000022000
Showing all locks held in the system:
3 locks held by kworker/u4:0/8:
#0: ffff8880b9a395d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:478
#1: ffff8880b9a27888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x4c1/0x780 kernel/sched/psi.c:880
#2: ffff8880b9a29198 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x6d3/0xd20 kernel/time/timer.c:1043
1 lock held by khungtaskd/27:
#0: ffffffff8cb1dc00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by systemd-udevd/2973:
#0: ffff88801b0c1118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0xb80 block/bdev.c:819
#1: ffff88801b044b60 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_open+0x68/0x100 drivers/block/loop.c:1733
1 lock held by in:imklog/6177:
#0: ffff888079331c70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:990
1 lock held by syz-executor.5/13368:
#0: ffff88801b044b60 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x2a/0xa50 drivers/block/loop.c:1248
1 lock held by syz-executor.5/13372:
#0: ffff888145a7dbc8 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff888145a7dbc8 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_update_page mm/filemap.c:2441 [inline]
#0: ffff888145a7dbc8 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_get_pages+0x94c/0x1ac0 mm/filemap.c:2579
=============================================
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: 8163 Comm: kworker/u4:6 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: 0x0 (bat_events)
RIP: 0010:__lock_acquire+0x4aa/0x2b00 kernel/locking/lockdep.c:4965
Code: 0f 44 0f b7 c0 41 83 e5 03 41 c1 e5 10 8b 4c 24 70 83 e1 01 c1 e1 12 31 d2 83 7c 24 54 00 0f 95 c2 c1 e2 13 8b 45 20 c1 e0 14 <45> 09 c5 41 09 d5 41 09 c5 41 09 cd 45 09 f5 41 09 dd 48 8b 44 24
RSP: 0018:ffffc90016977720 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000080000 RSI: dffffc0000000000 RDI: ffff888087811d00
RBP: ffffc90016977870 R08: 0000000000000000 R09: 0000000000000001
R10: fffffbfff1bfd14e R11: 0000000000000000 R12: ffff888087812744
R13: 0000000000020000 R14: 0000000000000028 R15: ffff8880878127a0
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f42bc021130 CR3: 000000000c88e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5637
rcu_lock_acquire+0x20/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:688 [inline]
cgroup_account_cputime include/linux/cgroup.h:794 [inline]
update_curr+0x418/0xd40 kernel/sched/fair.c:877
dequeue_entity+0x27/0xd90 kernel/sched/fair.c:4337
dequeue_task_fair+0x289/0x1360 kernel/sched/fair.c:5688
dequeue_task kernel/sched/core.c:2019 [inline]
deactivate_task kernel/sched/core.c:2033 [inline]
__schedule+0x63c/0x1460 kernel/sched/core.c:6207
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
worker_thread+0xfd5/0x1320 kernel/workqueue.c:2466
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: 0f 44 0f cmove (%rdi),%ecx
3: b7 c0 mov $0xc0,%bh
5: 41 83 e5 03 and $0x3,%r13d
9: 41 c1 e5 10 shl $0x10,%r13d
d: 8b 4c 24 70 mov 0x70(%rsp),%ecx
11: 83 e1 01 and $0x1,%ecx
14: c1 e1 12 shl $0x12,%ecx
17: 31 d2 xor %edx,%edx
19: 83 7c 24 54 00 cmpl $0x0,0x54(%rsp)
1e: 0f 95 c2 setne %dl
21: c1 e2 13 shl $0x13,%edx
24: 8b 45 20 mov 0x20(%rbp),%eax
27: c1 e0 14 shl $0x14,%eax
* 2a: 45 09 c5 or %r8d,%r13d <-- trapping instruction
2d: 41 09 d5 or %edx,%r13d
30: 41 09 c5 or %eax,%r13d
33: 41 09 cd or %ecx,%r13d
36: 45 09 f5 or %r14d,%r13d
39: 41 09 dd or %ebx,%r13d
3c: 48 rex.W
3d: 8b .byte 0x8b
3e: 44 rex.R
3f: 24 .byte 0x24