vivid-003: reconnect
NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
INFO: task syz-executor.5:14792 blocked for more than 140 seconds.
Not tainted 4.14.184-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D28928 14792 6346 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x8a6/0x1d70 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x5f0/0x1430 kernel/locking/mutex.c:893
fb_release+0x4e/0x140 drivers/video/fbdev/core/fbmem.c:1497
__fput+0x25f/0x7a0 fs/file_table.c:210
task_work_run+0x113/0x190 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:191 [inline]
exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x416651
RSP: 002b:00007ffed2dda8f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000416651
RDX: 0000001b30020000 RSI: 0000000000001aef RDI: 0000000000000003
RBP: 0000000000000001 R08: 00000000bf219aef R09: 00000000bf219af3
R10: 00007ffed2dda9e0 R11: 0000000000000293 R12: 000000000078c900
R13: 000000000078c900 R14: ffffffffffffffff R15: 000000000078c04c
Showing all locks held in the system:
1 lock held by khungtaskd/1057:
#0: (tasklist_lock){.+.+}, at: [<ffffffff8146c8d0>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
1 lock held by in:imklog/6003:
#0: (&f->f_pos_lock){+.+.}, at: [<ffffffff8191e4e6>] __fdget_pos+0xa6/0xc0 fs/file.c:769
1 lock held by syz-executor.5/14792:
#0: (&fb_info->lock){+.+.}, at: [<ffffffff8318192e>] fb_release+0x4e/0x140 drivers/video/fbdev/core/fbmem.c:1497
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 4.14.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
watchdog+0x5e2/0xb80 kernel/hung_task.c:274
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7618 Comm: kworker/u4:5 Not tainted 4.14.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
task: ffff888097890300 task.stack: ffff888054408000
RIP: 0010:__lock_release kernel/locking/lockdep.c:3760 [inline]
RIP: 0010:lock_release+0x1dd/0x7f0 kernel/locking/lockdep.c:4017
RSP: 0018:ffff88805440fba8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1ffff1100a881f79 RCX: 1ffffffff0fe794c
RDX: 1ffff11012f12170 RSI: 0000000000000001 RDI: ffff888097890b84
RBP: ffffffff87b84be0 R08: 0000000000000001 R09: 0000000000000000
R10: ffff888097890c00 R11: ffff888097890300 R12: ffffffff86231172
R13: ffff888097890300 R14: ffff888097890300 R15: ffff8880a95d3240
FS: 0000000000000000(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561412d6beb8 CR3: 00000000a91fe000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:247 [inline]
rcu_read_unlock include/linux/rcupdate.h:685 [inline]
batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:943 [inline]
batadv_iv_ogm_schedule_buff+0x60d/0xe90 net/batman-adv/bat_iv_ogm.c:997
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:1041 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:1034 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x500/0x6f0 net/batman-adv/bat_iv_ogm.c:1859
process_one_work+0x7c0/0x14c0 kernel/workqueue.c:2116
worker_thread+0x5d7/0x1080 kernel/workqueue.c:2250
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 86 80 08 00 00 48 89 c2 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 24 05 00 00 <49> c7 c5 00 1c 38 8a 45 8b be 80 08 00 00 48 b8 00 00 00 00 00