8021q: adding VLAN 0 to HW filter on device batadv0
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=d02/1/0x4000000000000002 softirq=13779/13779 fqs=5238 
rcu: 	 (t=10500 jiffies g=11657 q=1546)
NMI backtrace for cpu 0
CPU: 0 PID: 9826 Comm: syz-executor0 Not tainted 5.0.0-rc5+ #61
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __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_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x183/0x1cf kernel/rcu/tree.c:1211
 print_cpu_stall kernel/rcu/tree.c:1348 [inline]
 check_cpu_stall kernel/rcu/tree.c:1422 [inline]
 rcu_pending kernel/rcu/tree.c:3018 [inline]
 rcu_check_callbacks.cold+0x500/0xa4a kernel/rcu/tree.c:2521
 update_process_times+0x32/0x80 kernel/time/timer.c:1635
 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:161
 tick_sched_timer+0x47/0x130 kernel/time/tick-sched.c:1271
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x33e/0xde0 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline]
 smp_apic_timer_interrupt+0x120/0x570 arch/x86/kernel/apic/apic.c:1060
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:memcpy_erms+0x8/0x10 arch/x86/lib/memcpy_64.S:56
Code: 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 f3 a4 <c3> 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 fe 7c 35
RSP: 0018:ffff88808fd171b8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffff888092eb1798 RBX: 0000000000000868 RCX: 0000000000000000
RDX: 0000000000000010 RSI: ffff88808fd17348 RDI: ffff888092eb17a8
RBP: ffff88808fd171d8 R08: 1ffff110125d62f3 R09: ffffed10125d62f5
R10: ffffed10125d62f4 R11: ffff888092eb17a7 R12: 0000000000000010
R13: ffff888092eb1798 R14: ffff88808fd17338 R15: ffff88808fd17550
 memcpy include/linux/string.h:352 [inline]
 memcpy_common kernel/events/internal.h:172 [inline]
 __output_copy kernel/events/internal.h:176 [inline]
 perf_output_read_group kernel/events/core.c:6114 [inline]
 perf_output_read+0xe16/0x1390 kernel/events/core.c:6147
 perf_output_sample+0x13b9/0x1a90 kernel/events/core.c:6189
 __perf_event_output kernel/events/core.c:6511 [inline]
 perf_event_output_forward+0x150/0x290 kernel/events/core.c:6524
 __perf_event_overflow+0x144/0x360 kernel/events/core.c:7768
 perf_swevent_overflow+0xaa/0x140 kernel/events/core.c:7844
 perf_swevent_event+0x1f7/0x2f0 kernel/events/core.c:7877
 do_perf_sw_event kernel/events/core.c:7985 [inline]
 ___perf_sw_event+0x31c/0x570 kernel/events/core.c:8016
 __perf_sw_event+0x51/0xa0 kernel/events/core.c:8028
 perf_sw_event include/linux/perf_event.h:1054 [inline]
 do_user_addr_fault arch/x86/mm/fault.c:1516 [inline]
 __do_page_fault+0x734/0xd60 arch/x86/mm/fault.c:1541
 do_page_fault+0x71/0x581 arch/x86/mm/fault.c:1572
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83
RSP: 0018:ffff88808fd17b40 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 0000000000001000 RCX: 0000000000000340
RDX: 0000000000001000 RSI: 000000002081d000 RDI: ffff88808b047cc0
RBP: ffff88808fd17b78 R08: ffffed1011609000 R09: 0000000000000000
R10: ffffed1011608fff R11: ffff88808b047fff R12: 000000002081c340
R13: ffff88808b047000 R14: 000000002081d340 R15: 00007ffffffff000
 copy_page_from_iter_iovec lib/iov_iter.c:294 [inline]
 copy_page_from_iter+0x324/0x750 lib/iov_iter.c:907
 pipe_write+0x27d/0xfb0 fs/pipe.c:429
 call_write_iter include/linux/fs.h:1863 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x613/0x8e0 fs/read_write.c:487
 vfs_write+0x20c/0x580 fs/read_write.c:549
 ksys_write+0xea/0x1f0 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:607
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457e39
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f21b6591c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e39
RDX: 0000000041395527 RSI: 0000000020000340 RDI: 0000000000000006
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f21b65926d4
R13: 00000000004c3c0e R14: 00000000004dc3a8 R15: 00000000ffffffff