------------[ cut here ]------------
kernel BUG at net/sctp/auth.c:401!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 23392 Comm: syz-executor.2 Not tainted 5.14.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:sctp_auth_asoc_init_active_key+0x746/0x750 net/sctp/auth.c:436
Code: 89 f9 80 e1 07 38 c1 0f 8c 24 fa ff ff e8 62 4e 88 f8 e9 1a fa ff ff e8 a8 0a 3f f8 0f 0b e8 a1 0a 3f f8 0f 0b e8 9a 0a 3f f8 <0f> 0b 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 54 53 89 f5 49 89
RSP: 0018:ffffc90001b67ba0 EFLAGS: 00010287
RAX: ffffffff89411956 RBX: ffff88808eee29c8 RCX: 0000000000040000
RDX: ffffc9001258e000 RSI: 000000000000008f RDI: 0000000000000090
RBP: 0000000000000000 R08: ffffffff8941126c R09: fffffbfff1f5e3c9
R10: fffffbfff1f5e3c9 R11: 0000000000000000 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000cc0 R15: ffff88808eee29c8
FS:  00007f15b2dc8700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f15b2da7718 CR3: 000000002eae7000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sctp_auth_set_key+0x4ef/0x700 net/sctp/auth.c:864
 sctp_setsockopt_auth_key net/sctp/socket.c:3643 [inline]
 sctp_setsockopt+0x9faf/0xf6b0 net/sctp/socket.c:4686
 __sys_setsockopt+0x552/0x980 net/socket.c:2159
 __do_sys_setsockopt net/socket.c:2170 [inline]
 __se_sys_setsockopt net/socket.c:2167 [inline]
 __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2167
 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+0x44/0xae
RIP: 0033:0x4665e9
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:00007f15b2dc8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000000017 RSI: 0000000000000084 RDI: 0000000000000003
RBP: 00000000004bfcc4 R08: 0000000000000066 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007fffa6b2667f R14: 00007f15b2dc8300 R15: 0000000000022000
Modules linked in:
---[ end trace 9561440d2496417a ]---
RIP: 0010:sctp_auth_asoc_init_active_key+0x746/0x750 net/sctp/auth.c:436
Code: 89 f9 80 e1 07 38 c1 0f 8c 24 fa ff ff e8 62 4e 88 f8 e9 1a fa ff ff e8 a8 0a 3f f8 0f 0b e8 a1 0a 3f f8 0f 0b e8 9a 0a 3f f8 <0f> 0b 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 54 53 89 f5 49 89
RSP: 0018:ffffc90001b67ba0 EFLAGS: 00010287
RAX: ffffffff89411956 RBX: ffff88808eee29c8 RCX: 0000000000040000
RDX: ffffc9001258e000 RSI: 000000000000008f RDI: 0000000000000090
RBP: 0000000000000000 R08: ffffffff8941126c R09: fffffbfff1f5e3c9
R10: fffffbfff1f5e3c9 R11: 0000000000000000 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000cc0 R15: ffff88808eee29c8
FS:  00007f15b2dc8700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000541198 CR3: 000000002eae7000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400