8021q: adding VLAN 0 to HW filter on device batadv0
audit: type=1400 audit(1559516714.704:38): avc:  denied  { associate } for  pid=8186 comm="syz-executor.0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1
hrtimer: interrupt took 28538 ns
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8799 Comm: syz-executor.0 Not tainted 4.19.47 #19
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:proto_seq_printf net/core/sock.c:3422 [inline]
RIP: 0010:proto_seq_show+0x52/0x8e0 net/core/sock.c:3439
Code: 00 00 e8 91 3b 0c fc 48 8d bb 50 ff ff ff 48 8d 83 70 fe ff ff 48 89 fa 48 89 45 c8 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 0f 85 d2 07 00 00 48 83 bb 50 ff ff ff 01 19 c0 83 e0
RSP: 0018:ffff88806ff1f3d0 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: dead000000000100 RCX: ffffc90006289000
RDX: 1bd5a0000000000a RSI: ffffffff855ec8df RDI: dead000000000050
RBP: ffff88806ff1f460 R08: ffff88807e9d20c0 R09: ffffed1011464d9b
R10: ffffed1011464d9a R11: ffff88808a326cd3 R12: 00000000000002d4
R13: dead000000000100 R14: ffffffff87dc6ba0 R15: 0000000000001000
FS:  00007f2a8b85b700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2a8b85adb8 CR3: 00000000a0283000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 seq_read+0xaae/0x1110 fs/seq_file.c:268
 proc_reg_read+0x1f8/0x2b0 fs/proc/inode.c:231
 do_loop_readv_writev fs/read_write.c:701 [inline]
 do_loop_readv_writev fs/read_write.c:688 [inline]
 do_iter_read+0x490/0x640 fs/read_write.c:925
 vfs_readv+0xf0/0x160 fs/read_write.c:987
 kernel_readv fs/splice.c:362 [inline]
 default_file_splice_read+0x478/0x890 fs/splice.c:417
 do_splice_to+0x127/0x180 fs/splice.c:881
 splice_direct_to_actor+0x256/0x890 fs/splice.c:953
 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062
 do_sendfile+0x597/0xce0 fs/read_write.c:1447
 __do_sys_sendfile64 fs/read_write.c:1508 [inline]
 __se_sys_sendfile64 fs/read_write.c:1494 [inline]
 __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1494
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459279
Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f2a8b85ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459279
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 000000000075c060 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008000 R11: 0000000000000246 R12: 00007f2a8b85b6d4
R13: 00000000004c65f3 R14: 00000000004db268 R15: 00000000ffffffff
Modules linked in:
---[ end trace 459c35929896325b ]---
RIP: 0010:proto_seq_printf net/core/sock.c:3422 [inline]
RIP: 0010:proto_seq_show+0x52/0x8e0 net/core/sock.c:3439
Code: 00 00 e8 91 3b 0c fc 48 8d bb 50 ff ff ff 48 8d 83 70 fe ff ff 48 89 fa 48 89 45 c8 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 0f 85 d2 07 00 00 48 83 bb 50 ff ff ff 01 19 c0 83 e0
RSP: 0018:ffff88806ff1f3d0 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: dead000000000100 RCX: ffffc90006289000
RDX: 1bd5a0000000000a RSI: ffffffff855ec8df RDI: dead000000000050
RBP: ffff88806ff1f460 R08: ffff88807e9d20c0 R09: ffffed1011464d9b
R10: ffffed1011464d9a R11: ffff88808a326cd3 R12: 00000000000002d4
R13: dead000000000100 R14: ffffffff87dc6ba0 R15: 0000000000001000
FS:  00007f2a8b85b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc46bbdc9de CR3: 00000000a0283000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400