8021q: adding VLAN 0 to HW filter on device batadv0
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 924e5067 P4D 924e5067 PUD a4324067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8986 Comm: syz-executor050 Not tainted 5.4.0-rc2+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff888095e2f848 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880a7c02000 RCX: 1ffff11014f80494
RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff8880a79b0000
RBP: ffff888095e2f880 R08: ffff88809fce0080 R09: ffffed1014f80449
R10: ffffed1014f80448 R11: ffff8880a7c02247 R12: 0000000000000002
R13: 0000000000000304 R14: ffff8880a79b0000 R15: 0000000000000000
FS:  000000000259a880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000000a0aa6000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 xsk_poll+0x1e7/0x5a0 net/xdp/xsk.c:430
 sock_poll+0x15e/0x480 net/socket.c:1256
 vfs_poll include/linux/poll.h:90 [inline]
 do_pollfd fs/select.c:859 [inline]
 do_poll fs/select.c:907 [inline]
 do_sys_poll+0x63c/0xdd0 fs/select.c:1001
 __do_sys_ppoll fs/select.c:1101 [inline]
 __se_sys_ppoll fs/select.c:1081 [inline]
 __x64_sys_ppoll+0x259/0x310 fs/select.c:1081
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441bd9
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff33a1fe38 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441bd9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000020000040
RBP: 00007fff33a1fe50 R08: 0000000000000000 R09: 0000000001bbbbbb
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000403170 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: 0000000000000000
---[ end trace a8d44e42f57b6874 ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff888095e2f848 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880a7c02000 RCX: 1ffff11014f80494
RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff8880a79b0000
RBP: ffff888095e2f880 R08: ffff88809fce0080 R09: ffffed1014f80449
R10: ffffed1014f80448 R11: ffff8880a7c02247 R12: 0000000000000002
R13: 0000000000000304 R14: ffff8880a79b0000 R15: 0000000000000000
FS:  000000000259a880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000000a0aa6000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400