INFO: task syz-executor.1:15803 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:26416 pid:15803 ppid: 8075 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
nbd_add_socket+0x17b/0x8e0 drivers/block/nbd.c:1109
__nbd_ioctl drivers/block/nbd.c:1454 [inline]
nbd_ioctl+0x263/0xb80 drivers/block/nbd.c:1511
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: 0033:0x7f53e2441ae9
RSP: 002b:00007f53df9b7188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f53e2554f60 RCX: 00007f53e2441ae9
RDX: 0000000000000005 RSI: 000000000000ab00 RDI: 0000000000000004
RBP: 00007f53e249bf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf6b2f49f R14: 00007f53df9b7300 R15: 0000000000022000
INFO: task syz-executor.1:15816 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:26864 pid:15816 ppid: 8075 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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:680
__mutex_lock kernel/locking/mutex.c:740 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:792
nbd_ioctl+0x148/0xb80 drivers/block/nbd.c:1504
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: 0033:0x7f53e2441ae9
RSP: 002b:00007f53df996188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f53e2555020 RCX: 00007f53e2441ae9
RDX: 0000000000000003 RSI: 000000000000ab09 RDI: 0000000000000004
RBP: 00007f53e249bf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf6b2f49f R14: 00007f53df996300 R15: 0000000000022000
INFO: task syz-executor.1:15820 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:26848 pid:15820 ppid: 8075 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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:680
__mutex_lock kernel/locking/mutex.c:740 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:792
nbd_ioctl+0x148/0xb80 drivers/block/nbd.c:1504
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: 0033:0x7f53e2441ae9
RSP: 002b:00007f53df975188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f53e25550e0 RCX: 00007f53e2441ae9
RDX: 0000000000000004 RSI: 000000000000ab00 RDI: 0000000000000006
RBP: 00007f53e249bf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf6b2f49f R14: 00007f53df975300 R15: 0000000000022000
INFO: task syz-executor.1:15853 blocked for more than 144 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:28368 pid:15853 ppid: 8075 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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:680
__mutex_lock kernel/locking/mutex.c:740 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:792
nbd_ioctl+0x148/0xb80 drivers/block/nbd.c:1504
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: 0033:0x7f53e2441ae9
RSP: 002b:00007f53df933188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f53e2555260 RCX: 00007f53e2441ae9
RDX: 0000000000000003 RSI: 000000000000ab09 RDI: 0000000000000006
RBP: 00007f53e249bf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf6b2f49f R14: 00007f53df933300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1dc00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6217:
2 locks held by kworker/u4:9/13199:
#0: ffff8880b9a395d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:478
#1: ffffc9000a447d20 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2273
1 lock held by syz-executor.1/15803:
#0: ffff88801b56a198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x148/0xb80 drivers/block/nbd.c:1504
1 lock held by syz-executor.1/15816:
#0: ffff88801b56a198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x148/0xb80 drivers/block/nbd.c:1504
1 lock held by syz-executor.1/15820:
#0: ffff88801b56a198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x148/0xb80 drivers/block/nbd.c:1504
1 lock held by syz-executor.1/15853:
#0: ffff88801b56a198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x148/0xb80 drivers/block/nbd.c:1504
=============================================
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+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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2952 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: 0033:0x7f59c6c9abc2
Code: 8d 35 c4 ad 0c 00 48 8d 3d 3a 8f 0c 00 ba b7 02 00 00 e8 81 d4 fc ff 90 31 c0 eb ad 66 90 66 2e 0f 1f 84 00 00 00 00 00 41 57 <41> 56 41 55 41 54 55 53 48 83 ec 38 48 85 ff 44 89 04 24 0f 84 55
RSP: 002b:00007ffdec051a40 EFLAGS: 00000212
RAX: 00005616b559deb0 RBX: 00005616b559de80 RCX: 0000000000000006
RDX: 0000000000000003 RSI: 0000000000000010 RDI: 00005616b559a040
RBP: 000000000012d810 R08: 0000000000000000 R09: 000000000012d800
R10: 00007ffdec0bb0b8 R11: 00007f59c4611900 R12: 00005616b559de80
R13: 00007ffdec051b28 R14: 0000000000000006 R15: 00007ffdec051ab0
FS: 00007f59c70628c0 GS: 0000000000000000