INFO: task syz-executor.2:12823 blocked for more than 143 seconds.
Not tainted 6.5.0-rc6-syzkaller-00027-g91aa6c412d7f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28416 pid:12823 ppid:5066 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747
nbd_start_device_ioctl drivers/block/nbd.c:1427 [inline]
__nbd_ioctl drivers/block/nbd.c:1488 [inline]
nbd_ioctl+0x317/0xd30 drivers/block/nbd.c:1528
blkdev_ioctl+0x2f9/0x770 block/ioctl.c:621
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f324c27cae9
RSP: 002b:00007f324cf330c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f324c39bf80 RCX: 00007f324c27cae9
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 000000000000000a
RBP: 00007f324c2c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f324c39bf80 R15: 00007ffd761fdfb8
INFO: task syz-executor.2:12832 blocked for more than 143 seconds.
Not tainted 6.5.0-rc6-syzkaller-00027-g91aa6c412d7f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28240 pid:12832 ppid:5066 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747
nbd_ioctl+0x154/0xd30 drivers/block/nbd.c:1521
blkdev_ioctl+0x2f9/0x770 block/ioctl.c:621
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f324c27cae9
RSP: 002b:00007f324cf120c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f324c39c050 RCX: 00007f324c27cae9
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000005
RBP: 00007f324c2c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f324c39c050 R15: 00007ffd761fdfb8
INFO: task syz-executor.2:12836 blocked for more than 143 seconds.
Not tainted 6.5.0-rc6-syzkaller-00027-g91aa6c412d7f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:29472 pid:12836 ppid:5066 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
blk_mq_freeze_queue_wait+0x13f/0x190 block/blk-mq.c:139
nbd_add_socket+0x18c/0x980 drivers/block/nbd.c:1128
__nbd_ioctl drivers/block/nbd.c:1471 [inline]
nbd_ioctl+0x89a/0xd30 drivers/block/nbd.c:1528
blkdev_ioctl+0x2f9/0x770 block/ioctl.c:621
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f324c27cae9
RSP: 002b:00007f324cef10c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f324c39c120 RCX: 00007f324c27cae9
RDX: 0000000000000003 RSI: 000000000000ab00 RDI: 0000000000000005
RBP: 00007f324c2c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f324c39c120 R15: 00007ffd761fdfb8
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c9a67f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c9a64f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8c9a7400 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
2 locks held by getty/4773:
#0: ffff888028ca5098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187
1 lock held by udevd/5067:
#0: ffff88801f5134c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:803
1 lock held by syz-executor.2/12823:
#0: ffff88801f4f9998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_start_device_ioctl drivers/block/nbd.c:1427 [inline]
#0: ffff88801f4f9998 (&nbd->config_lock){+.+.}-{3:3}, at: __nbd_ioctl drivers/block/nbd.c:1488 [inline]
#0: ffff88801f4f9998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x317/0xd30 drivers/block/nbd.c:1528
1 lock held by syz-executor.2/12832:
#0: ffff88801f4f9998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x154/0xd30 drivers/block/nbd.c:1521
1 lock held by syz-executor.2/12836:
#0: ffff88801f4f9998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x154/0xd30 drivers/block/nbd.c:1521
1 lock held by syz-executor.2/12963:
#0: ffff88801f5134c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:803
1 lock held by syz-executor.2/12964:
#0: ffff88801f5134c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:803
1 lock held by syz-executor.2/13043:
#0: ffff88801f5134c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:803
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc6-syzkaller-00027-g91aa6c412d7f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2ac/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf29/0x11b0 kernel/hung_task.c:379
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2838 Comm: kworker/u4:5 Not tainted 6.5.0-rc6-syzkaller-00027-g91aa6c412d7f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__local_bh_disable_ip+0x92/0xc0 kernel/softirq.c:326
Code: 03 00 48 89 df e8 6e de 18 00 85 c0 75 28 48 8d bd b0 14 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <75> 23 48 89 9d b0 14 00 00 5b 5d c3 31 ff 31 db e8 39 de 18 00 eb
RSP: 0018:ffffc9000b83fb18 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 1ffff110051e5a06 RSI: 0000000000000201 RDI: ffff888028f2d030
RBP: ffff888028f2bb80 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000009 R11: 1ffffffff1936441 R12: ffffffff89fc2640
R13: ffff888087ca0c80 R14: ffff8880277e5e80 R15: ffff88801f072048
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005603eca331c0 CR3: 000000000c776000 CR4: 0000000000350ee0
Call Trace:
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:125 [inline]
_raw_spin_lock_bh+0x17/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
batadv_nc_purge_paths+0xd3/0x3c0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x986/0x10f0 net/batman-adv/network-coding.c:720
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304