INFO: task syz-executor.1:28695 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.1 state:D stack:24112 pid:28695 ppid: 12981 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: 0033:0x7f7c77045ae9
RSP: 002b:00007f7c745bb188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7c77158f60 RCX: 00007f7c77045ae9
RDX: 0000000020000780 RSI: 0000000000004c02 RDI: 0000000000000007
RBP: 00007f7c7709ff6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeda1c51ff R14: 00007f7c745bb300 R15: 0000000000022000
INFO: task syz-executor.1:28705 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.1 state:D stack:24496 pid:28705 ppid: 12981 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: 0033:0x7f7c77045ae9
RSP: 002b:00007f7c74579188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f7c771590e0 RCX: 00007f7c77045ae9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000007
RBP: 00007f7c7709ff6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024002da8 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeda1c51ff R14: 00007f7c74579300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8cd1da80 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by systemd-journal/2957:
#0: ffff8880b9b395d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:478
#1: ffffffff8cdf2f60 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: spin_lock include/linux/spinlock.h:349 [inline]
#1: ffffffff8cdf2f60 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: fast_dput fs/dcache.c:764 [inline]
#1: ffffffff8cdf2f60 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: dput+0x313/0x6e0 fs/dcache.c:875
1 lock held by in:imklog/6177:
#0: ffff88807e44ad70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:990
1 lock held by syz-executor.1/28695:
#0: ffff88801afbe360 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x2a/0xa50 drivers/block/loop.c:1248
1 lock held by syz-executor.1/28705:
#0: ffff88814088c448 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff88814088c448 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_update_page mm/filemap.c:2441 [inline]
#0: ffff88814088c448 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_get_pages+0x94c/0x1ac0 mm/filemap.c:2579
2 locks held by systemd-udevd/28686:
#0: ffff88801afc2918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0xb80 block/bdev.c:819
#1: ffff88801afbe360 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_open+0x68/0x100 drivers/block/loop.c:1733
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 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:105
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: 2957 Comm: systemd-journal Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:199
Code: 00 00 0f 1f 40 00 be 0d 00 00 00 48 c7 c7 a0 ac d5 8c e8 bf c0 4b 00 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0c 25 c0 6f 02 00 65 8b 15 14 fa 7d 7e f7 c2 00 01 ff 00
RSP: 0018:ffffc90001a5f510 EFLAGS: 00000246
RAX: ffffffff81e219c5 RBX: ffff88807dcc3e30 RCX: ffff88807bf43a00
RDX: ffff88807bf43a00 RSI: 0000000000000001 RDI: ffffffff8cd1da80
RBP: ffff88807dcc3d60 R08: dffffc0000000000 R09: ffffed100fb987bf
R10: ffffed100fb987bf R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88807dcc3df0 R15: ffff88807dcc3dd0
FS: 00007fbb80f068c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb7a168008 CR3: 000000007ec69000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release+0x5/0x20 include/linux/rcupdate.h:272
rcu_read_unlock include/linux/rcupdate.h:721 [inline]
__d_lookup+0x66d/0x720 fs/dcache.c:2444
lookup_fast+0xe0/0x800 fs/namei.c:1615
walk_component+0x11b/0x790 fs/namei.c:1966
link_path_walk+0x697/0xd00
path_openat+0x25b/0x3660 fs/namei.c:3555
do_filp_open+0x277/0x4f0 fs/namei.c:3586
do_sys_openat2+0x13b/0x500 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+0x221/0x270 fs/open.c:1232
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: 0033:0x7fbb8049585d
Code: 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 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 67 f6 ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffd212a9040 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffd212a9350 RCX: 00007fbb8049585d
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 0000563484e77ea0
RBP: 000000000000000d R08: 00000000000001c0 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000293 R12: 00000000ffffffff
R13: 0000563484e6c040 R14: 00007ffd212a9310 R15: 0000563484e78d90
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 0f 1f 40 00 nopl 0x0(%rax)
6: be 0d 00 00 00 mov $0xd,%esi
b: 48 c7 c7 a0 ac d5 8c mov $0xffffffff8cd5aca0,%rdi
12: e8 bf c0 4b 00 callq 0x4bc0d6
17: c3 retq
18: cc int3
19: cc int3
1a: cc int3
1b: cc int3
1c: cc int3
1d: cc int3
1e: cc int3
1f: cc int3
20: cc int3
21: cc int3
22: cc int3
23: cc int3
24: cc int3
25: cc int3
26: 48 8b 04 24 mov (%rsp),%rax
* 2a: 65 48 8b 0c 25 c0 6f mov %gs:0x26fc0,%rcx <-- trapping instruction
31: 02 00
33: 65 8b 15 14 fa 7d 7e mov %gs:0x7e7dfa14(%rip),%edx # 0x7e7dfa4e
3a: f7 c2 00 01 ff 00 test $0xff0100,%edx