RAX: ffffffffffffffda RBX: 00007f2a50ee7c90 RCX: 000000000045a919
RDX: 0000000000000001 RSI: 0000000020000700 RDI: 0000000000000004
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2a50ee86d4
R13: 00000000004c929a R14: 00000000004e1000 R15: 0000000000000005
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 16719 Comm: syz-executor.2 Not tainted 5.5.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:sctp_stream_free+0xe4/0x180 net/sctp/stream.c:183
Code: 07 48 89 d1 48 69 d2 aa 00 00 00 48 c1 e1 0c 48 29 d0 48 8d 04 40 48 8d 34 c1 e8 c7 53 51 fc 48 8d 78 08 48 89 fa 48 c1 ea 03 <42> 80 3c 32 00 75 6f 48 8b 78 08 e8 bc 3f 74 fa 41 0f b6 45 00 84
RSP: 0018:ffffc90006bf7698 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc9000e2fb000
RDX: 0000000000000001 RSI: ffffffff838fac40 RDI: 0000000000000008
RBP: ffffc90006bf76d0 R08: ffff888066ca8600 R09: ffffed1015d0703d
R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: ffff888075d6c6e8
R13: ffffed100ebad8df R14: dffffc0000000000 R15: ffff888077fbf000
FS:  00007f2a50ee8700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000ac8ff0 CR3: 000000021af51000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sctp_association_free+0x235/0x7e0 net/sctp/associola.c:350
 sctp_connect_new_asoc+0x3cd/0x5a0 net/sctp/socket.c:1108
 sctp_sendmsg_new_asoc net/sctp/socket.c:1679 [inline]
 sctp_sendmsg+0x13a0/0x1f10 net/sctp/socket.c:1989
 inet_sendmsg+0x9e/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:643 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:663
 ____sys_sendmsg+0x358/0x880 net/socket.c:2342
 ___sys_sendmsg+0x100/0x170 net/socket.c:2396
 __sys_sendmmsg+0x1bf/0x4d0 net/socket.c:2486
 __do_sys_sendmmsg net/socket.c:2515 [inline]
 __se_sys_sendmmsg net/socket.c:2512 [inline]
 __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2512
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a919
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f2a50ee7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f2a50ee7c90 RCX: 000000000045a919
RDX: 0000000000000001 RSI: 0000000020000700 RDI: 0000000000000004
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2a50ee86d4
R13: 00000000004c929a R14: 00000000004e1000 R15: 0000000000000005
Modules linked in:
---[ end trace 3977201d9bad7498 ]---
RIP: 0010:sctp_stream_free+0xe4/0x180 net/sctp/stream.c:183
Code: 07 48 89 d1 48 69 d2 aa 00 00 00 48 c1 e1 0c 48 29 d0 48 8d 04 40 48 8d 34 c1 e8 c7 53 51 fc 48 8d 78 08 48 89 fa 48 c1 ea 03 <42> 80 3c 32 00 75 6f 48 8b 78 08 e8 bc 3f 74 fa 41 0f b6 45 00 84
RSP: 0018:ffffc90006bf7698 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc9000e2fb000
RDX: 0000000000000001 RSI: ffffffff838fac40 RDI: 0000000000000008
RBP: ffffc90006bf76d0 R08: ffff888066ca8600 R09: ffffed1015d0703d
R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: ffff888075d6c6e8
R13: ffffed100ebad8df R14: dffffc0000000000 R15: ffff888077fbf000
FS:  00007f2a50ee8700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000ac8ff0 CR3: 000000021af51000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400