INFO: task syz-executor.5:11493 blocked for more than 143 seconds.
Not tainted 6.5.0-syzkaller-01207-g1c59d383390f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27456 pid:11493 ppid:5066 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_timeout+0x27a/0x2c0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e2/0x5f0 kernel/sched/completion.c:116
__flush_workqueue+0x3e9/0x1330 kernel/workqueue.c:3177
nbd_start_device_ioctl drivers/block/nbd.c:1426 [inline]
__nbd_ioctl drivers/block/nbd.c:1486 [inline]
nbd_ioctl+0x308/0xc50 drivers/block/nbd.c:1526
blkdev_ioctl+0x2f9/0x770 block/ioctl.c:628
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
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: 0033:0x7fd390c7cae9
RSP: 002b:00007fd38f7fe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd390d9bf80 RCX: 00007fd390c7cae9
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000006
RBP: 00007fd390cc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd390d9bf80 R15: 00007ffe57970bb8
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c9a7d20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
2 locks held by getty/4786:
#0: ffff8880287c1098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002c912f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187
2 locks held by kworker/u5:7/5079:
#0: ffff88801f2a9938 ((wq_completion)nbd5-recv){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
#0: ffff88801f2a9938 ((wq_completion)nbd5-recv){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
#0: ffff88801f2a9938 ((wq_completion)nbd5-recv){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
#0: ffff88801f2a9938 ((wq_completion)nbd5-recv){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
#0: ffff88801f2a9938 ((wq_completion)nbd5-recv){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:678 [inline]
#0: ffff88801f2a9938 ((wq_completion)nbd5-recv){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:705 [inline]
#0: ffff88801f2a9938 ((wq_completion)nbd5-recv){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2570
#1: ffffc90004c0fd80 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2574
2 locks held by kworker/u5:2/7987:
#0: ffff888141338938 ((wq_completion)nbd2-recv){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
#0: ffff888141338938 ((wq_completion)nbd2-recv){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
#0: ffff888141338938 ((wq_completion)nbd2-recv){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
#0: ffff888141338938 ((wq_completion)nbd2-recv){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
#0: ffff888141338938 ((wq_completion)nbd2-recv){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:678 [inline]
#0: ffff888141338938 ((wq_completion)nbd2-recv){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:705 [inline]
#0: ffff888141338938 ((wq_completion)nbd2-recv){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2570
#1: ffffc900174dfd80 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2574
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.5.0-syzkaller-01207-g1c59d383390f #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+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:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 35 Comm: kworker/u4:2 Not tainted 6.5.0-syzkaller-01207-g1c59d383390f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:67 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:127 [inline]
RIP: 0010:net_rx_action+0x1af/0xe90 net/core/dev.c:6634
Code: c1 e8 03 4a 8d 2c 30 48 89 6c 24 60 4c 89 fd 49 89 cf e8 84 79 5c f9 0f b6 45 00 84 c0 74 06 0f 8e d7 0b 00 00 41 c6 47 78 01 <9c> 41 5c 41 81 e4 00 02 00 00 fa 31 ff 4c 89 e6 e8 ec 74 5c f9 4d
RSP: 0018:ffffc90000007dd0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff92000000fc9 RCX: 0000000000000100
RDX: ffff888017e5bb80 RSI: ffffffff8829f60c RDI: 0000000000000005
RBP: ffffed1017307b57 R08: 0000000000000005 R09: 00000000ffffb1e0
R10: 0000000000004e20 R11: ffffc90000007ff8 R12: 0000000000000000
R13: ffff8880b983dab8 R14: dffffc0000000000 R15: ffff8880b983da40
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe2f1377978 CR3: 000000000c776000 CR4: 0000000000350ef0
Call Trace:
__do_softirq+0x218/0x965 kernel/softirq.c:553
do_softirq kernel/softirq.c:454 [inline]
do_softirq+0xaa/0xe0 kernel/softirq.c:441
__local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:381
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:819 [inline]
__dev_queue_xmit+0xb1d/0x3f20 net/core/dev.c:4230
dev_queue_xmit include/linux/netdevice.h:3088 [inline]
batadv_send_skb_packet+0x52a/0x6b0 net/batman-adv/send.c:108
batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:392 [inline]
batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:420 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x708/0x8c0 net/batman-adv/bat_iv_ogm.c:1700
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