INFO: task syz-executor.0:17732 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:28496 pid:17732 ppid: 14251 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
nbd_add_socket+0x166/0x810 drivers/block/nbd.c:1109
__nbd_ioctl drivers/block/nbd.c:1454 [inline]
nbd_ioctl+0x38c/0xb10 drivers/block/nbd.c:1511
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: 0033:0x7f8a4cc60ae9
RSP: 002b:00007f8a4a1b5188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8a4cd74020 RCX: 00007f8a4cc60ae9
RDX: 0000000000000007 RSI: 000000000000ab00 RDI: 0000000000000006
RBP: 00007f8a4ccbaf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe8e6f941f R14: 00007f8a4a1b5300 R15: 0000000000022000
INFO: task syz-executor.0:17737 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:29592 pid:17737 ppid: 14251 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
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
nbd_ioctl+0x151/0xb10 drivers/block/nbd.c:1504
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: 0033:0x7f8a4cc60ae9
RSP: 002b:00007f8a4a194188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8a4cd740e0 RCX: 00007f8a4cc60ae9
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000006
RBP: 00007f8a4ccbaf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe8e6f941f R14: 00007f8a4a194300 R15: 0000000000022000
INFO: task syz-executor.0:17759 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:29592 pid:17759 ppid: 14251 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
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
nbd_ioctl+0x151/0xb10 drivers/block/nbd.c:1504
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: 0033:0x7f8a4cc60ae9
RSP: 002b:00007f8a4a110188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8a4cd743e0 RCX: 00007f8a4cc60ae9
RDX: 0000000000000007 RSI: 000000000000ab00 RDI: 0000000000000006
RBP: 00007f8a4ccbaf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe8e6f941f R14: 00007f8a4a110300 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
2 locks held by kworker/u4:2/50:
1 lock held by in:imklog/6227:
#0: ffff88801d105770 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
1 lock held by syz-executor.0/17732:
#0: ffff88801a79d998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x151/0xb10 drivers/block/nbd.c:1504
1 lock held by syz-executor.0/17737:
#0: ffff88801a79d998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x151/0xb10 drivers/block/nbd.c:1504
1 lock held by syz-executor.0/17759:
#0: ffff88801a79d998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x151/0xb10 drivers/block/nbd.c:1504
=============================================
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: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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 50 Comm: kworker/u4:2 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_purge_orig
RIP: 0010:__local_bh_enable_ip+0x6b/0x120 kernel/softirq.c:370
Code: 0f 85 c5 00 00 00 8b 05 4f a7 4a 0c 85 c0 74 0b 65 8b 05 b8 7a bb 7e 85 c0 74 53 9c 58 fa f6 c4 02 75 5a 65 8b 05 25 70 bb 7e <25> 00 ff 00 00 3d 00 02 00 00 74 4e 83 eb 01 f7 db 65 01 1d 0d 70
RSP: 0018:ffffc900017ffbe0 EFLAGS: 00000093
RAX: 0000000080000201 RBX: 0000000000000201 RCX: 0000000000000000
RDX: ffff8880155fba00 RSI: ffffffff81470033 RDI: 0000000000000003
RBP: ffffffff88eeb7b7 R08: 0000000000000000 R09: ffff88803534dec3
R10: ffffffff817e26bd R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88803c4bcdd0 R14: ffff888011bd1a00 R15: 000000000000037b
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0a76fc4010 CR3: 000000007b010000 CR4: 0000000000350ee0
Call Trace:
spin_unlock_bh include/linux/spinlock.h:394 [inline]
batadv_purge_orig_ref+0xeb7/0x1550 net/batman-adv/originator.c:1259
batadv_purge_orig+0x17/0x60 net/batman-adv/originator.c:1272
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: 0f 85 c5 00 00 00 jne 0xcb
6: 8b 05 4f a7 4a 0c mov 0xc4aa74f(%rip),%eax # 0xc4aa75b
c: 85 c0 test %eax,%eax
e: 74 0b je 0x1b
10: 65 8b 05 b8 7a bb 7e mov %gs:0x7ebb7ab8(%rip),%eax # 0x7ebb7acf
17: 85 c0 test %eax,%eax
19: 74 53 je 0x6e
1b: 9c pushfq
1c: 58 pop %rax
1d: fa cli
1e: f6 c4 02 test $0x2,%ah
21: 75 5a jne 0x7d
23: 65 8b 05 25 70 bb 7e mov %gs:0x7ebb7025(%rip),%eax # 0x7ebb704f
* 2a: 25 00 ff 00 00 and $0xff00,%eax <-- trapping instruction
2f: 3d 00 02 00 00 cmp $0x200,%eax
34: 74 4e je 0x84
36: 83 eb 01 sub $0x1,%ebx
39: f7 db neg %ebx
3b: 65 gs
3c: 01 .byte 0x1
3d: 1d .byte 0x1d
3e: 0d .byte 0xd
3f: 70 .byte 0x70