INFO: task syz-executor.3:11915 blocked for more than 143 seconds.
Not tainted 6.5.0-rc2-next-20230721-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27760 pid:11915 ppid:5089 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6711
schedule+0xe7/0x1b0 kernel/sched/core.c:6787
blk_mq_freeze_queue_wait+0x13f/0x190 block/blk-mq.c:140
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: 0033:0x7f8a0247cb29
RSP: 002b:00007f8a031e50c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8a0259bf80 RCX: 00007f8a0247cb29
RDX: 0000000000000007 RSI: 000000000000ab00 RDI: 0000000000000004
RBP: 00007f8a024c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f8a0259bf80 R15: 00007fffb8ff4508
INFO: task syz-executor.3:11970 blocked for more than 143 seconds.
Not tainted 6.5.0-rc2-next-20230721-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27920 pid:11970 ppid:5089 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6711
schedule+0xe7/0x1b0 kernel/sched/core.c:6787
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6846
__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: 0033:0x7f8a0247cb29
RSP: 002b:00007f8a031c40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8a0259c050 RCX: 00007f8a0247cb29
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000004
RBP: 00007f8a024c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8a0259c050 R15: 00007fffb8ff4508
INFO: task syz-executor.3:11974 blocked for more than 143 seconds.
Not tainted 6.5.0-rc2-next-20230721-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:29472 pid:11974 ppid:5089 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6711
schedule+0xe7/0x1b0 kernel/sched/core.c:6787
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6846
__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: 0033:0x7f8a0247cb29
RSP: 002b:00007f8a031a30c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8a0259c120 RCX: 00007f8a0247cb29
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003
RBP: 00007f8a024c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8a0259c120 R15: 00007fffb8ff4508
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c9a6a10 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xef0 kernel/rcu/tasks.h:571
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c9a66d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xef0 kernel/rcu/tasks.h:571
1 lock held by khungtaskd/28:
#0: ffffffff8c9a7620 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
2 locks held by getty/4793:
#0: ffff888028b8b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015972f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187
2 locks held by kworker/1:5/5137:
1 lock held by udevd/6495:
#0: ffff88801fd4d4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:803
1 lock held by syz-executor.3/11915:
#0: ffff88801fd43198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x154/0xd30 drivers/block/nbd.c:1521
1 lock held by syz-executor.3/11970:
#0: ffff88801fd43198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_start_device_ioctl drivers/block/nbd.c:1427 [inline]
#0: ffff88801fd43198 (&nbd->config_lock){+.+.}-{3:3}, at: __nbd_ioctl drivers/block/nbd.c:1488 [inline]
#0: ffff88801fd43198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x317/0xd30 drivers/block/nbd.c:1528
1 lock held by syz-executor.3/11974:
#0: ffff88801fd43198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x154/0xd30 drivers/block/nbd.c:1521
1 lock held by syz-executor.3/13010:
#0: ffff88801fd4d4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:803
1 lock held by syz-executor.3/13011:
#0: ffff88801fd4d4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:803
1 lock held by syz-executor.3/13380:
#0: ffff88801fd4d4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4f0/0xb20 block/bdev.c:803
1 lock held by syz-executor.3/13381:
#0: ffff88801fd4d4c8 (&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-rc2-next-20230721-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
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+0xfab/0x1230 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:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2867 Comm: kworker/u4:11 Not tainted 6.5.0-rc2-next-20230721-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:find_held_lock+0xcf/0x110 kernel/locking/lockdep.c:5272
Code: 04 20 38 d0 7f 04 84 c0 75 4c 40 32 6b 21 83 e5 60 74 96 31 db 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 14 02 <4c> 89 f0 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 11 45 89 3e 48 89
RSP: 0018:ffffc9000ba77a48 EFLAGS: 00000806
RAX: dffffc0000000000 RBX: ffff888029a6c698 RCX: ffffc9000ba77ad0
RDX: 0000000000000004 RSI: ffffffff8c9a7620 RDI: ffff888029a6c698
RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff1d5881a
R10: ffffffff8eac40d7 R11: 0000000000000000 R12: ffffffff8c9a7620
R13: ffffffff8c9a7620 R14: ffffc9000ba77ad0 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0010d1000 CR3: 000000000c776000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_release kernel/locking/lockdep.c:5436 [inline]
lock_release+0x1fb/0x680 kernel/locking/lockdep.c:5781
rcu_lock_release include/linux/rcupdate.h:308 [inline]
rcu_read_unlock include/linux/rcupdate.h:782 [inline]
batadv_nc_process_nc_paths.part.0+0x22e/0x3f0 net/batman-adv/network-coding.c:699
batadv_nc_process_nc_paths net/batman-adv/network-coding.c:679 [inline]
batadv_nc_worker+0xd5b/0x10f0 net/batman-adv/network-coding.c:728
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:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000