------------[ cut here ]------------
kernel BUG at net/sctp/auth.c:401!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 3 PID: 2017 Comm: syz-executor.1 Not tainted 5.14.0-rc2-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:sctp_auth_asoc_init_active_key.part.0+0x39b/0x550 net/sctp/auth.c:401
Code: 8b 1b 4c 39 eb 0f 85 d1 fe ff ff 45 31 e4 e8 4c 91 1f f9 44 89 e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 35 91 1f f9 <0f> 0b e8 2e 91 1f f9 48 8b 44 24 08 48 c1 e8 03 42 80 3c 20 00 0f
RSP: 0018:ffffc90006a77c08 EFLAGS: 00010212
RAX: 0000000000000124 RBX: ffff8880786ee9c8 RCX: ffffc90029e19000
RDX: 0000000000040000 RSI: ffffffff8855f79b RDI: ffff8880786ee9ea
RBP: ffff8880786ee000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff88561df6 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8880786ee9c8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88802cd00000(0063) knlGS:00000000f5506b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002d224000 CR3: 00000000505a6000 CR4: 0000000000150ee0
DR0: 0000000000008000 DR1: 0000000000000000 DR2: 0000000000001000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sctp_auth_asoc_init_active_key net/sctp/auth.c:392 [inline]
 sctp_auth_set_key+0x631/0x860 net/sctp/auth.c:864
 sctp_setsockopt_auth_key net/sctp/socket.c:3643 [inline]
 sctp_setsockopt+0x4bbc/0xa880 net/sctp/socket.c:4686
 __sys_setsockopt+0x2db/0x610 net/socket.c:2159
 __do_sys_setsockopt net/socket.c:2170 [inline]
 __se_sys_setsockopt net/socket.c:2167 [inline]
 __ia32_sys_setsockopt+0xb9/0x150 net/socket.c:2167
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f0c549
Code: 03 74 c0 01 10 05 03 74 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 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:00000000f55065fc EFLAGS: 00000296 ORIG_RAX: 000000000000016e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000084
RDX: 0000000000000017 RSI: 0000000020000080 RDI: 0000000000000009
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 2ada26b80cfb319d ]---
RIP: 0010:sctp_auth_asoc_init_active_key.part.0+0x39b/0x550 net/sctp/auth.c:401
Code: 8b 1b 4c 39 eb 0f 85 d1 fe ff ff 45 31 e4 e8 4c 91 1f f9 44 89 e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 35 91 1f f9 <0f> 0b e8 2e 91 1f f9 48 8b 44 24 08 48 c1 e8 03 42 80 3c 20 00 0f
RSP: 0018:ffffc90006a77c08 EFLAGS: 00010212
RAX: 0000000000000124 RBX: ffff8880786ee9c8 RCX: ffffc90029e19000
RDX: 0000000000040000 RSI: ffffffff8855f79b RDI: ffff8880786ee9ea
RBP: ffff8880786ee000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff88561df6 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8880786ee9c8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88802cc00000(0063) knlGS:00000000f5506b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000080abe50 CR3: 00000000505a6000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400