IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
INFO: task syz-executor.1:3965 blocked for more than 140 seconds.
      Not tainted 4.19.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D14512  3965   2484 0x00080006
Call Trace:
 context_switch kernel/sched/core.c:2825 [inline]
 __schedule+0x2dc/0x8a0 kernel/sched/core.c:3473
 schedule+0x27/0x80 kernel/sched/core.c:3517
 schedule_timeout+0x323/0x4a0 kernel/time/timer.c:1780
 do_wait_for_common kernel/sched/completion.c:83 [inline]
 __wait_for_common kernel/sched/completion.c:104 [inline]
 wait_for_common+0x1ab/0x1e0 kernel/sched/completion.c:115
 wait_for_completion+0x18/0x20 kernel/sched/completion.c:136
 cec_claim_log_addrs+0xbc/0xd0 drivers/media/cec/cec-adap.c:1474
 __cec_s_log_addrs drivers/media/cec/cec-adap.c:1711 [inline]
 __cec_s_log_addrs+0x423/0x490 drivers/media/cec/cec-adap.c:1558
 cec_adap_s_log_addrs drivers/media/cec/cec-api.c:161 [inline]
 cec_ioctl+0x1ed/0xd06 drivers/media/cec/cec-api.c:498
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xa3/0x610 fs/ioctl.c:685
 ksys_ioctl+0x62/0x90 fs/ioctl.c:702
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl fs/ioctl.c:707 [inline]
 __x64_sys_ioctl+0x15/0x20 fs/ioctl.c:707
 do_syscall_64+0x69/0x170 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fee11cb8da9
Code: Bad RIP value.
RSP: 002b:00007fee1183a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fee11de6f80 RCX: 00007fee11cb8da9
RDX: 0000000020000040 RSI: 00000000c05c6104 RDI: 0000000000000003
RBP: 00007fee11d0547a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fee11de6f80 R15: 00007ffca80d90e8

Showing all locks held in the system:
1 lock held by khungtaskd/214:
 #0: 000000006d4a2a42 (rcu_read_lock){....}, at: debug_show_all_locks+0x23/0x103 kernel/locking/lockdep.c:4435
1 lock held by klogd/2074:
 #0: 00000000ce7cb37d (&rq->lock){....}, at: rq_lock kernel/sched/sched.h:1824 [inline]
 #0: 00000000ce7cb37d (&rq->lock){....}, at: __schedule+0xb4/0x8a0 kernel/sched/core.c:3411
2 locks held by getty/2276:
 #0: 00000000afcf5ff0 (&tty->ldisc_sem){....}, at: ldsem_down_read+0xe/0x10 drivers/tty/tty_ldsem.c:353
 #1: 00000000b99c5191 (&ldata->atomic_read_lock){....}, at: n_tty_read+0xbc/0x860 drivers/tty/n_tty.c:2140

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 214 Comm: khungtaskd Not tainted 4.19.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x87/0xba lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.0+0x14/0x53 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x9c/0x9e 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:144 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline]
 watchdog+0x2b0/0x3c0 kernel/hung_task.c:265
 kthread+0x11c/0x140 kernel/kthread.c:246
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:413
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:57