device batadv0 left promiscuous mode
netlink: 'syz-executor.2': attribute type 10 has an invalid length.
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: 0 PID: 26694 Comm: syz-executor.2 Not tainted 4.19.206-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hsr_dev_change_mtu+0xa2/0xd0 net/hsr/hsr_device.c:149
Code: 89 e0 5b 5d 41 5c 41 5d c3 e8 ca ac ad f9 eb e1 e8 93 d7 77 f9 49 8d 7d 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 1d 49 8b 7d 10 ba 06 00 00 00 48 c7 c6 c0 cd 70 89
RSP: 0018:ffff888010aaeb60 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 00000000000005dc RCX: ffffc9000a4d7000
RDX: 0000000000000002 RSI: ffffffff87eabb2d RDI: 0000000000000010
RBP: ffff888033296840 R08: 0000000000000000 R09: 00000000000005d6
R10: 0000000000000004 R11: 0000000000000000 R12: 00000000000005d6
R13: 0000000000000000 R14: ffff888033296a88 R15: 0000000000000001
FS:  00007fe07deab700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3e90f1bff8 CR3: 0000000017703000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __dev_set_mtu net/core/dev.c:7763 [inline]
 dev_set_mtu_ext+0x339/0x580 net/core/dev.c:7816
 dev_set_mtu+0x95/0x120 net/core/dev.c:7840
 team_port_add drivers/net/team/team.c:1205 [inline]
 team_add_slave+0x9cb/0x1fa0 drivers/net/team/team.c:1976
 do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2321
 do_setlink+0x7ec/0x3540 net/core/rtnetlink.c:2455
 rtnl_newlink+0xda9/0x15c0 net/core/rtnetlink.c:3077
 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4782
 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2457
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1911
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xc3/0x120 net/socket.c:661
 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227
 __sys_sendmsg net/socket.c:2265 [inline]
 __do_sys_sendmsg net/socket.c:2274 [inline]
 __se_sys_sendmsg net/socket.c:2272 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4665f9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe07deab188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000004
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd89b7369f R14: 00007fe07deab300 R15: 0000000000022000
Modules linked in:
---[ end trace 6ed3adb12a3a590f ]---
RIP: 0010:hsr_dev_change_mtu+0xa2/0xd0 net/hsr/hsr_device.c:149
Code: 89 e0 5b 5d 41 5c 41 5d c3 e8 ca ac ad f9 eb e1 e8 93 d7 77 f9 49 8d 7d 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 1d 49 8b 7d 10 ba 06 00 00 00 48 c7 c6 c0 cd 70 89
RSP: 0018:ffff888010aaeb60 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 00000000000005dc RCX: ffffc9000a4d7000
RDX: 0000000000000002 RSI: ffffffff87eabb2d RDI: 0000000000000010
RBP: ffff888033296840 R08: 0000000000000000 R09: 00000000000005d6
R10: 0000000000000004 R11: 0000000000000000 R12: 00000000000005d6
R13: 0000000000000000 R14: ffff888033296a88 R15: 0000000000000001
FS:  00007fe07deab700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe49f624358 CR3: 0000000017703000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 e0                	mov    %esp,%eax
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	41 5c                	pop    %r12
   6:	41 5d                	pop    %r13
   8:	c3                   	retq
   9:	e8 ca ac ad f9       	callq  0xf9adacd8
   e:	eb e1                	jmp    0xfffffff1
  10:	e8 93 d7 77 f9       	callq  0xf977d7a8
  15:	49 8d 7d 10          	lea    0x10(%r13),%rdi
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	75 1d                	jne    0x4d
  30:	49 8b 7d 10          	mov    0x10(%r13),%rdi
  34:	ba 06 00 00 00       	mov    $0x6,%edx
  39:	48 c7 c6 c0 cd 70 89 	mov    $0xffffffff8970cdc0,%rsi