bond0: (slave syz_tun): Releasing backup interface
bridge_slave_0: left allmulticast mode
bridge_slave_0: left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127]
CPU: 3 UID: 0 PID: 18738 Comm: syz.1.5588 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__hlist_del include/linux/list.h:1045 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:599 [inline]
RIP: 0010:br_del_frame+0x106/0x1a0 net/bridge/br_input.c:482
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 87 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 18 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 76 49 89 1c 24 48 85 db 74 24 e8 36 5e 6b f7 48 8d
RSP: 0000:ffffc900073deed0 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900241b9000
RDX: 1bd5a00000000024 RSI: ffffffff8a9ffe8f RDI: ffffffff91471cb8
RBP: ffffffff91471ca0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: dead000000000122
R13: ffff888060cc9800 R14: 000000000000001c R15: ffff888060cc9800
FS:  0000000000000000(0000) GS:ffff888096c61000(0063) knlGS:00000000f54a6b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080001200 CR3: 00000000569b8000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 mep_delete_implementation+0x292/0x340 net/bridge/br_cfm.c:591
 br_cfm_port_del+0x14f/0x1e0 net/bridge/br_cfm.c:872
 del_nbp+0x168/0xd50 net/bridge/br_if.c:348
 br_del_if+0xe0/0x260 net/bridge/br_if.c:732
 do_set_master+0x172/0x730 net/core/rtnetlink.c:3055
 do_setlink.isra.0+0xb2b/0x3e60 net/core/rtnetlink.c:3273
 rtnl_group_changelink net/core/rtnetlink.c:3919 [inline]
 __rtnl_newlink net/core/rtnetlink.c:4085 [inline]
 rtnl_newlink+0x1dc4/0x2620 net/core/rtnetlink.c:4215
 rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7132
 netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec net/socket.c:800 [inline]
 __sock_sendmsg net/socket.c:815 [inline]
 ____sys_sendmsg+0xa4d/0xbe0 net/socket.c:2713
 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2767
 __sys_sendmsg+0x160/0x210 net/socket.c:2799
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline]
 __do_fast_syscall_32+0x13a/0x8b0 arch/x86/entry/syscall_32.c:291
 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:316
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7fe3fec
Code: Unable to access opcode bytes at 0xf7fe3fc2.
RSP: 002b:00000000f54a650c EFLAGS: 00000292 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000080000280
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__hlist_del include/linux/list.h:1045 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:599 [inline]
RIP: 0010:br_del_frame+0x106/0x1a0 net/bridge/br_input.c:482
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 87 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 18 4c 89 e2 48 c1 ea 03 <80> 
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 87 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 18 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 76 49 89 1c 24 48 85 db 74 24 e8 36 5e 6b f7 48 8d
RSP: 0000:ffffc900073deed0 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900241b9000
RDX: 1bd5a00000000024 RSI: ffffffff8a9ffe8f RDI: ffffffff91471cb8
RBP: ffffffff91471ca0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: dead000000000122
R13: ffff888060cc9800 R14: 000000000000001c R15: ffff888060cc9800
FS:  0000000000000000(0000) GS:ffff888096b61000(0063) knlGS:00000000f54a6b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f5484ff4 CR3: 00000000569b8000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	00 fc                	add    %bh,%ah
   2:	ff                   	lcall  (bad)
   3:	df 48 89             	fisttps -0x77(%rax)
   6:	fa                   	cli
   7:	48 c1 ea 03          	shr    $0x3,%rdx
   b:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   f:	0f 85 87 00 00 00    	jne    0x9c
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df
  1f:	4c 8b 65 18          	mov    0x18(%rbp),%r12
  23:	4c 89 e2             	mov    %r12,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	75 76                	jne    0xa6
  30:	49 89 1c 24          	mov    %rbx,(%r12)
  34:	48 85 db             	test   %rbx,%rbx
  37:	74 24                	je     0x5d
  39:	e8 36 5e 6b f7       	call   0xf76b5e74
  3e:	48                   	rex.W
  3f:	8d                   	.byte 0x8d