audit: type=1800 audit(1593026011.415:157): pid=25003 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="bus" dev="sda1" ino=16199 res=0
INFO: rcu_preempt self-detected stall on CPU
	0-...: (1 GPs behind) idle=016/140000000000002/0 softirq=53440/53442 fqs=1 
	 (t=10500 jiffies g=15524 c=15523 q=409)
rcu_preempt kthread starved for 10255 jiffies! g15524 c15523 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_preempt     R  running task    29904     8      2 0x80000000
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_timeout+0x4df/0xe50 kernel/time/timer.c:1746
 rcu_gp_kthread+0xb3d/0x1ce0 kernel/rcu/tree.c:2255
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
NMI backtrace for cpu 0
CPU: 0 PID: 24982 Comm: syz-executor.1 Not tainted 4.14.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __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_single_cpu_backtrace include/linux/nmi.h:158 [inline]
 rcu_dump_cpu_stacks+0x16d/0x1b8 kernel/rcu/tree.c:1396
 print_cpu_stall kernel/rcu/tree.c:1542 [inline]
 check_cpu_stall kernel/rcu/tree.c:1610 [inline]
 __rcu_pending kernel/rcu/tree.c:3390 [inline]
 rcu_pending kernel/rcu/tree.c:3452 [inline]
 rcu_check_callbacks.cold+0x490/0xdaa kernel/rcu/tree.c:2792
 update_process_times+0x29/0x60 kernel/time/timer.c:1590
 tick_sched_handle.isra.0+0x73/0x150 kernel/time/tick-sched.c:165
 tick_sched_timer+0x41/0x120 kernel/time/tick-sched.c:1223
 __run_hrtimer kernel/time/hrtimer.c:1223 [inline]
 __hrtimer_run_queues+0x24b/0xb90 kernel/time/hrtimer.c:1287
 hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
 smp_apic_timer_interrupt+0x117/0x5f0 arch/x86/kernel/apic/apic.c:1100
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
RIP: 0010:ipv6_get_ifaddr+0x1db/0x520 net/ipv6/addrconf.c:1917
RSP: 0018:ffff8880aec07c08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 1ffff11011aa40dc RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff86c449a0 RDI: ffff88808d5206e0
RBP: ffff8880aec07cf0 R08: 0000000000000000 R09: 0000000000022296
R10: ffff88805be96900 R11: ffff88805be96000 R12: ffff88808d5205c0
R13: ffff888096df0040 R14: ffffed1015d80f9e R15: ffff88806e326ac0
 ndisc_send_rs+0x176/0x630 net/ipv6/ndisc.c:646
 addrconf_rs_timer+0x280/0x5a0 net/ipv6/addrconf.c:3765
 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
 expire_timers+0x233/0x4d0 kernel/time/timer.c:1318
 __run_timers kernel/time/timer.c:1636 [inline]
 run_timer_softirq+0x1d8/0x5b0 kernel/time/timer.c:1649
 __do_softirq+0x254/0x9bf kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x15b/0x1a0 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x141/0x5f0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:lock_acquire+0x1ec/0x3f0 kernel/locking/lockdep.c:4001
RSP: 0018:ffff88806cd37ac0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0f62cd1 RBX: ffff88805be96000 RCX: ffff88805be96888
RDX: dffffc0000000000 RSI: ffff88805be968b0 RDI: 0000000000000282
RBP: ffff888083472a38 R08: 000000000000238c R09: ffffffff89e675e0
R10: ffff88805be968b0 R11: ffff88805be96000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152
 spin_lock include/linux/spinlock.h:317 [inline]
 __d_instantiate+0x6c/0x3c0 fs/dcache.c:1848
 d_instantiate+0x6d/0x90 fs/dcache.c:1878
 anon_inode_getfile+0x142/0x2f0 fs/anon_inodes.c:103
 anon_inode_getfd+0x42/0x90 fs/anon_inodes.c:150
 bpf_prog_new_fd kernel/bpf/syscall.c:895 [inline]
 bpf_prog_load+0x728/0xe00 kernel/bpf/syscall.c:1087
 SYSC_bpf kernel/bpf/syscall.c:1512 [inline]
 SyS_bpf+0x12b2/0x34e0 kernel/bpf/syscall.c:1477
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45cb09
RSP: 002b:00007f51befd4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00000000004db1c0 RCX: 000000000045cb09
RDX: 0000000000000048 RSI: 00000000200054c0 RDI: 0000000000000005
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000070 R14: 00000000004c3414 R15: 00007f51befd56d4
systemd[1]: systemd-journald.service: Main process exited, code=killed, status=6/ABRT