protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
INFO: task syz-executor.4:20948 blocked for more than 140 seconds.
Not tainted 5.0.0-rc6+ #72
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4 D28224 20948 7861 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2844 [inline]
__schedule+0x817/0x1cc0 kernel/sched/core.c:3485
schedule+0x92/0x180 kernel/sched/core.c:3529
schedule_timeout+0x8ca/0xfd0 kernel/time/timer.c:1779
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_1
do_wait_for_common kernel/sched/completion.c:83 [inline]
__wait_for_common kernel/sched/completion.c:104 [inline]
wait_for_common kernel/sched/completion.c:115 [inline]
wait_for_completion+0x29c/0x440 kernel/sched/completion.c:136
__synchronize_srcu+0x197/0x250 kernel/rcu/srcutree.c:946
synchronize_srcu_expedited kernel/rcu/srcutree.c:971 [inline]
synchronize_srcu+0x239/0x3e8 kernel/rcu/srcutree.c:1022
blk_mq_quiesce_queue+0x14e/0x1d0 block/blk-mq.c:240
nbd_clear_que+0x68/0xf0 drivers/block/nbd.c:749
nbd_clear_sock drivers/block/nbd.c:1099 [inline]
nbd_config_put+0x189/0x7e0 drivers/block/nbd.c:1114
nbd_release+0xf6/0x140 drivers/block/nbd.c:1379
__blkdev_put+0x4d3/0x810 fs/block_dev.c:1827
blkdev_put+0x98/0x560 fs/block_dev.c:1889
blkdev_close+0x8b/0xb0 fs/block_dev.c:1896
__fput+0x2df/0x8d0 fs/file_table.c:278
____fput+0x16/0x20 fs/file_table.c:309
task_work_run+0x14a/0x1c0 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:166
prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x411d31
Code: be b3 34 01 00 00 31 c0 bf bb 36 44 00 e8 17 f3 00 00 8b b3 30 01 00 00 31 c0 bf d0 36 44 00 e8 05 f3 00 00 8b b3 08 01 00 00 <31> c0 bf e4 36 44 00 e8 f3 f2 00 00 8b 83 e0 00 00 00 48 89 ee bf
RSP: 002b:00007ffc6860d900 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 000000000000000e RCX: 0000000000411d31
RDX: 0000000000000000 RSI: 0000000000743198 RDI: 000000000000000d
RBP: 0000000000000000 R08: 0000000000743190 R09: 0000000000063855
R10: 00007ffc6860d820 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000166 R15: 0000000000000004
Showing all locks held in the system:
3 locks held by kworker/1:0/17:
1 lock held by khungtaskd/1040:
#0: 000000007da9dc53 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4389
2 locks held by rs:main Q:Reg/7686:
#0: 000000006d8cdac0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:795
#1: 00000000c9b30f92 (sb_writers#4){.+.+}, at: file_start_write include/linux/fs.h:2816 [inline]
#1: 00000000c9b30f92 (sb_writers#4){.+.+}, at: vfs_write+0x429/0x580 fs/read_write.c:548
1 lock held by rsyslogd/7688:
#0: 00000000fa880622 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:795
2 locks held by getty/7810:
#0: 00000000cf05bee2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000925dfa52 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7811:
#0: 00000000e48f4bf9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000009eb354b5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7812:
#0: 000000004c394677 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000581582aa (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7813:
#0: 000000005b31e6af (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000dd99e92f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7814:
#0: 0000000055f4c77b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 0000000047798418 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7815:
#0: 00000000298025bb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000009c45b293 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by getty/7816:
#0: 00000000a3a3a127 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000005104002b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154
2 locks held by syz-executor.4/20948:
#0: 0000000072626cd7 (&bdev->bd_mutex){+.+.}, at: __blkdev_put+0xbb/0x810 fs/block_dev.c:1814
#1: 0000000021d58254 (&nbd->config_lock){+.+.}, at: refcount_dec_and_mutex_lock lib/refcount.c:311 [inline]
#1: 0000000021d58254 (&nbd->config_lock){+.+.}, at: refcount_dec_and_mutex_lock+0x56/0x90 lib/refcount.c:306
1 lock held by syz-executor.1/20998:
#0: 00000000da58a6ae (&rtc->ops_lock){+.+.}, at: rtc_dev_ioctl+0xf3/0x980 drivers/rtc/dev.c:219
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1040 Comm: khungtaskd Not tainted 5.0.0-rc6+ #72
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x9df/0xee0 kernel/hung_task.c:287
kthread+0x357/0x430 kernel/kthread.c:246
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.0.0-rc6+ #72
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events rtc_timer_do_work
RIP: 0010:__lock_acquire+0x1a9/0x4700 kernel/locking/lockdep.c:3248
Code: df 48 c1 ee 03 0f b6 34 16 48 c7 c2 a0 6a 55 8a 83 e2 07 83 c2 03 40 38 f2 7c 09 40 84 f6 0f 85 c4 0e 00 00 8b 3d 07 7a fe 08 <85> ff 0f 94 c2 41 83 f8 2f 76 08 84 d2 0f 85 f0 0d 00 00 49 8d bf
RSP: 0018:ffff8880a98f77c0 EFLAGS: 00000097
RAX: ffffffff8a160000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000004 RDI: 0000000000000000
RBP: ffff8880a98f7990 R08: 0000000000000003 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888218b9c960
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8880a98ec480
FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa089c5e140 CR3: 000000007cd0a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3841
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152
__wake_up_common_lock+0xc7/0x190 kernel/sched/wait.c:120
__wake_up+0xe/0x10 kernel/sched/wait.c:145
rtc_handle_legacy_irq+0x8f/0xd0 drivers/rtc/interface.c:605
rtc_uie_update_irq+0x20/0x30 drivers/rtc/interface.c:630
rtc_timer_do_work+0x2ca/0xf00 drivers/rtc/interface.c:909
process_one_work+0x98e/0x1790 kernel/workqueue.c:2173
worker_thread+0x98/0xe40 kernel/workqueue.c:2319
kthread+0x357/0x430 kernel/kthread.c:246
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352