netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
------------[ cut here ]------------
proc_dir_entry 'can-bcm/10803' already registered
WARNING: CPU: 0 PID: 6609 at fs/proc/generic.c:375 proc_register+0x484/0x5f0 fs/proc/generic.c:375
Modules linked in:
CPU: 0 PID: 6609 Comm: syz-executor.1 Not tainted 6.9.0-rc3-syzkaller-00189-g00dcf5d862e8 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:proc_register+0x484/0x5f0 fs/proc/generic.c:375
Code: 48 c1 ea 03 80 3c 02 00 0f 85 7e 01 00 00 48 8b 44 24 08 4c 89 fa 48 c7 c7 60 62 20 8b 48 8b b0 d8 00 00 00 e8 4d 2f 2e ff 90 <0f> 0b 90 90 48 c7 c7 40 fe 9e 8d e8 dc 36 b2 08 48 8b 4c 24 20 48
RSP: 0018:ffffc90003987c60 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888054a2dec0 RCX: ffffc9000c604000
RDX: 0000000000040000 RSI: ffffffff81512bf6 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: 0000000000000005
R13: dffffc0000000000 R14: ffff888054a2d040 R15: ffff888054a2d124
FS:  0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5ecab40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000030d26000 CR3: 0000000026826000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 proc_create_net_single+0x105/0x170 fs/proc/proc_net.c:219
 bcm_connect+0x1ed/0x4d0 net/can/bcm.c:1673
 __sys_connect_file+0x15f/0x1a0 net/socket.c:2048
 __sys_connect+0x149/0x170 net/socket.c:2065
 __do_sys_connect net/socket.c:2075 [inline]
 __se_sys_connect net/socket.c:2072 [inline]
 __ia32_sys_connect+0x71/0xb0 net/socket.c:2072
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:321
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:346
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf72d8579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f5eca5ac EFLAGS: 00000292 ORIG_RAX: 000000000000016a
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 0000000020000440
RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi