netlink: 12 bytes leftover after parsing attributes in process `syz.0.3229'.
Oops: general protection fault, probably for non-canonical address 0xe00e13a521e14058: 0000 [#1] SMP KASAN PTI
KASAN: maybe wild-memory-access in range [0x0070bd290f0a02c0-0x0070bd290f0a02c7]
CPU: 0 UID: 0 PID: 18429 Comm: syz.0.3229 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:sigd_send+0x39b/0xf90 net/atm/signaling.c:128
Code: 48 c1 e8 03 0f b6 04 18 84 c0 49 89 dc 48 8b 1c 24 0f 85 78 07 00 00 31 ed 41 2b 2f 49 8d be 9c 02 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 76 07 00 00 41 89 ae 9c 02 00 00 49 8d
RSP: 0018:ffffc90003e3f820 EFLAGS: 00010203
RAX: 000e17a521e14058 RBX: ffff88805d44ea00 RCX: 0000000000080000
RDX: ffffc9000e611000 RSI: 000000000000019d RDI: 0070bd290f0a02c5
RBP: 00000000ffffffbe R08: ffff88802e5e3c80 R09: 0000000000000007
R10: 000000000000000f R11: 0000000000000002 R12: dffffc0000000000
R13: 1ffff110064f8ce0 R14: 0070bd290f0a0029 R15: ffff8880327c6714
FS:  00007f48309ee6c0(0000) GS:ffff88812613d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c36ade3 CR3: 0000000064744000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 vcc_sendmsg+0xb2e/0xd70 net/atm/common.c:650
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg+0x21c/0x270 net/socket.c:742
 ____sys_sendmsg+0x505/0x830 net/socket.c:2630
 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2684
 __sys_sendmsg net/socket.c:2716 [inline]
 __do_sys_sendmsg net/socket.c:2721 [inline]
 __se_sys_sendmsg net/socket.c:2719 [inline]
 __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2719
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f483278f6c9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f48309ee038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f48329e5fa0 RCX: 00007f483278f6c9
RDX: 0000000000000880 RSI: 0000200000000100 RDI: 0000000000000004
RBP: 00007f4832811f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f48329e6038 R14: 00007f48329e5fa0 R15: 00007ffd7aaf6fd8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:sigd_send+0x39b/0xf90 net/atm/signaling.c:128
Code: 48 c1 e8 03 0f b6 04 18 84 c0 49 89 dc 48 8b 1c 24 0f 85 78 07 00 00 31 ed 41 2b 2f 49 8d be 9c 02 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 76 07 00 00 41 89 ae 9c 02 00 00 49 8d
RSP: 0018:ffffc90003e3f820 EFLAGS: 00010203
RAX: 000e17a521e14058 RBX: ffff88805d44ea00 RCX: 0000000000080000
RDX: ffffc9000e611000 RSI: 000000000000019d RDI: 0070bd290f0a02c5
RBP: 00000000ffffffbe R08: ffff88802e5e3c80 R09: 0000000000000007
R10: 000000000000000f R11: 0000000000000002 R12: dffffc0000000000
R13: 1ffff110064f8ce0 R14: 0070bd290f0a0029 R15: ffff8880327c6714
FS:  00007f48309ee6c0(0000) GS:ffff88812613d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c36ade3 CR3: 0000000064744000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	48 c1 e8 03          	shr    $0x3,%rax
   4:	0f b6 04 18          	movzbl (%rax,%rbx,1),%eax
   8:	84 c0                	test   %al,%al
   a:	49 89 dc             	mov    %rbx,%r12
   d:	48 8b 1c 24          	mov    (%rsp),%rbx
  11:	0f 85 78 07 00 00    	jne    0x78f
  17:	31 ed                	xor    %ebp,%ebp
  19:	41 2b 2f             	sub    (%r15),%ebp
  1c:	49 8d be 9c 02 00 00 	lea    0x29c(%r14),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 76 07 00 00    	jne    0x7ad
  37:	41 89 ae 9c 02 00 00 	mov    %ebp,0x29c(%r14)
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d