INFO: task systemd-udevd:9914 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:27016 pid: 9914 ppid: 2974 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: 0033:0x7f3172ede840
RSP: 002b:00007ffee22fdc88 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 000055ae88916380 RCX: 00007f3172ede840
RDX: 000055ae868f4fe3 RSI: 00000000000a0800 RDI: 000055ae88916120
RBP: 00007ffee22fde00 R08: 000055ae868f4670 R09: 0000000000000010
R10: 00007f3172c58d70 R11: 0000000000000246 R12: 00007ffee22fdd50
R13: 000055ae889037c0 R14: 0000000000000003 R15: 000000000000000e
INFO: task syz-executor.0:12873 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.0 state:D stack:26088 pid:12873 ppid: 6553 flags:0x00004004
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
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
gfs2_kill_sb+0x11c/0x160 fs/gfs2/ops_fstype.c:1725
deactivate_locked_super+0x94/0x160 fs/super.c:335
get_tree_bdev+0x573/0x760 fs/super.c:1297
gfs2_get_tree+0x4a/0x270 fs/gfs2/ops_fstype.c:1327
vfs_get_tree+0x89/0x2f0 fs/super.c:1500
do_new_mount fs/namespace.c:2988 [inline]
path_mount+0x1320/0x1fa0 fs/namespace.c:3318
do_mount fs/namespace.c:3331 [inline]
__do_sys_mount fs/namespace.c:3539 [inline]
__se_sys_mount fs/namespace.c:3516 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3516
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: 0033:0x7f79c7dc101a
RSP: 002b:00007f79c5334fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020001200 RCX: 00007f79c7dc101a
RDX: 0000000020001180 RSI: 00000000200011c0 RDI: 00007f79c5335000
RBP: 00007f79c5335040 R08: 00007f79c5335040 R09: 0000000020001180
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020001180
R13: 00000000200011c0 R14: 00007f79c5335000 R15: 0000000020000080
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
2 locks held by in:imklog/6241:
#0: ffff888073583c70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
#1: ffffffff8bb83b60 (rcu_read_lock){....}-{1:2}, at: double_lock_hb kernel/futex/futex.h:251 [inline]
#1: ffffffff8bb83b60 (rcu_read_lock){....}-{1:2}, at: futex_wake_op+0x813/0xd70 kernel/futex/waitwake.c:259
1 lock held by systemd-udevd/9914:
#0: ffff88801aa5c118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
2 locks held by syz-executor.0/12873:
#0: ffff88801aa5c118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x97/0x9e0 block/bdev.c:914
#1: ffff888147308360 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_release+0x4d/0x1f0 drivers/block/loop.c:1748
=============================================
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+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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_kcov_mode+0x7/0x40 kernel/kcov.c:166
Code: 00 e9 59 fe ff ff 48 8b 7c 24 08 e8 63 bd 46 00 e9 61 fd ff ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc 65 8b 05 49 db 8a 7e <89> c2 81 e2 00 01 00 00 a9 00 01 ff 00 74 10 31 c0 85 d2 74 15 8b
RSP: 0018:ffffc90000d97a98 EFLAGS: 00000246
RAX: 0000000080000100 RBX: 0000000000000001 RCX: ffff8880119d5700
RDX: 0000000000000000 RSI: ffff8880119d5700 RDI: 0000000000000003
RBP: ffff8880788b4c80 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff888f6cd2 R11: 0000000000000000 R12: ffff88807d7ac45a
R13: ffff888079120da0 R14: 1ffff920001b2f58 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000046e203 CR3: 000000000b88e000 CR4: 0000000000350ee0
Call Trace:
write_comp_data kernel/kcov.c:221 [inline]
__sanitizer_cov_trace_const_cmp1+0x22/0x80 kernel/kcov.c:273
rcu_read_lock include/linux/rcupdate.h:689 [inline]
sta_info_get_bss+0xc2/0x400 net/mac80211/sta_info.c:198
__ieee80211_rx_handle_packet net/mac80211/rx.c:4845 [inline]
ieee80211_rx_list+0x1747/0x27c0 net/mac80211/rx.c:4971
ieee80211_rx_napi+0xdb/0x3d0 net/mac80211/rx.c:4994
ieee80211_rx include/net/mac80211.h:4582 [inline]
ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235
tasklet_action_common.constprop.0+0x201/0x2e0 kernel/softirq.c:783
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
run_ksoftirqd kernel/softirq.c:920 [inline]
run_ksoftirqd+0x2d/0x60 kernel/softirq.c:912
smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164
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: e9 59 fe ff ff jmpq 0xfffffe5e
5: 48 8b 7c 24 08 mov 0x8(%rsp),%rdi
a: e8 63 bd 46 00 callq 0x46bd72
f: e9 61 fd ff ff jmpq 0xfffffd75
14: cc int3
15: cc int3
16: cc int3
17: cc int3
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: 65 8b 05 49 db 8a 7e mov %gs:0x7e8adb49(%rip),%eax # 0x7e8adb72
* 29: 89 c2 mov %eax,%edx <-- trapping instruction
2b: 81 e2 00 01 00 00 and $0x100,%edx
31: a9 00 01 ff 00 test $0xff0100,%eax
36: 74 10 je 0x48
38: 31 c0 xor %eax,%eax
3a: 85 d2 test %edx,%edx
3c: 74 15 je 0x53
3e: 8b .byte 0x8b