general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f]
CPU: 1 PID: 4693 Comm: syz-executor129 Not tainted 5.15.98-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:list_add_tail include/linux/list.h:100 [inline]
RIP: 0010:sctp_outq_tail_data net/sctp/outqueue.c:91 [inline]
RIP: 0010:sctp_outq_tail+0x2d9/0x910 net/sctp/outqueue.c:299
Code: 08 48 89 df e8 08 72 4f f8 48 8b 2b 49 8d 5c 24 18 4c 8d 7d 30 48 83 c5 38 49 89 ed 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 80 7c 05 00 00 74 08 48 89 ef e8 d7 71 4f f8 4c 8b 75 00 48 89
RSP: 0018:ffffc900054f7538 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88806bf278d8 RCX: ffff8880762a5700
RDX: 0000000000000000 RSI: 00000000000000c0 RDI: 0000000000001001
RBP: 0000000000000038 R08: ffffffff840af3b2 R09: ffffffff897a1400
R10: 0000000000000002 R11: ffff8880762a5700 R12: ffff88806bf278c0
R13: 0000000000000007 R14: ffff88807c8c47f0 R15: 0000000000000030
FS:  00007f9f9d4e5700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020034000 CR3: 000000006bf24000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 sctp_cmd_send_msg net/sctp/sm_sideeffect.c:1114 [inline]
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1777 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline]
 sctp_do_sm+0x3178/0x5c50 net/sctp/sm_sideeffect.c:1170
 sctp_primitive_SEND+0x94/0xc0 net/sctp/primitive.c:163
 sctp_sendmsg_to_asoc+0x16ce/0x1f90 net/sctp/socket.c:1869
 sctp_sendmsg+0x1f49/0x3370 net/sctp/socket.c:2027
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 __sys_sendto+0x564/0x720 net/socket.c:2039
 __do_sys_sendto net/socket.c:2051 [inline]
 __se_sys_sendto net/socket.c:2047 [inline]
 __x64_sys_sendto+0xda/0xf0 net/socket.c:2047
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f9f9d558ce9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9f9d4e52f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f9f9d5e14b8 RCX: 00007f9f9d558ce9
RDX: 0000000000034000 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 00007f9f9d5e14b0 R08: 00000000200005c0 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9f9d5e14bc
R13: 00007f9f9d5ae600 R14: 0100000000000000 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 76910402eb1a4510 ]---
RIP: 0010:list_add_tail include/linux/list.h:100 [inline]
RIP: 0010:sctp_outq_tail_data net/sctp/outqueue.c:91 [inline]
RIP: 0010:sctp_outq_tail+0x2d9/0x910 net/sctp/outqueue.c:299
Code: 08 48 89 df e8 08 72 4f f8 48 8b 2b 49 8d 5c 24 18 4c 8d 7d 30 48 83 c5 38 49 89 ed 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 80 7c 05 00 00 74 08 48 89 ef e8 d7 71 4f f8 4c 8b 75 00 48 89
RSP: 0018:ffffc900054f7538 EFLAGS: 00010202

RAX: dffffc0000000000 RBX: ffff88806bf278d8 RCX: ffff8880762a5700
RDX: 0000000000000000 RSI: 00000000000000c0 RDI: 0000000000001001
RBP: 0000000000000038 R08: ffffffff840af3b2 R09: ffffffff897a1400
R10: 0000000000000002 R11: ffff8880762a5700 R12: ffff88806bf278c0
R13: 0000000000000007 R14: ffff88807c8c47f0 R15: 0000000000000030
FS:  00007f9f9d4e5700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556fc1628 CR3: 000000006bf24000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	08 48 89             	or     %cl,-0x77(%rax)
   3:	df e8                	fucomip %st(0),%st
   5:	08 72 4f             	or     %dh,0x4f(%rdx)
   8:	f8                   	clc
   9:	48 8b 2b             	mov    (%rbx),%rbp
   c:	49 8d 5c 24 18       	lea    0x18(%r12),%rbx
  11:	4c 8d 7d 30          	lea    0x30(%rbp),%r15
  15:	48 83 c5 38          	add    $0x38,%rbp
  19:	49 89 ed             	mov    %rbp,%r13
  1c:	49 c1 ed 03          	shr    $0x3,%r13
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	41 80 7c 05 00 00    	cmpb   $0x0,0x0(%r13,%rax,1) <-- trapping instruction
  30:	74 08                	je     0x3a
  32:	48 89 ef             	mov    %rbp,%rdi
  35:	e8 d7 71 4f f8       	callq  0xf84f7211
  3a:	4c 8b 75 00          	mov    0x0(%rbp),%r14
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89