audit: type=1800 audit(1551833285.740:30): pid=7544 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0
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: 7695 Comm: syz-executor913 Not tainted 5.0.0+ #7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:sctp_sched_rr_dequeue+0xd3/0x170 net/sctp/stream_sched_rr.c:141
Code: ea 03 80 3c 02 00 0f 85 a2 00 00 00 48 8b 5b 08 e8 62 20 ee fa 48 8d 7b 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 53 4c 8b 6b 30 4c 89 e7 49 83 ed 18 4c 89 ee e8 b4
RSP: 0018:ffff88808ce1f030 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8679cd9f
RDX: 0000000000000006 RSI: ffffffff8681c41e RDI: 0000000000000030
RBP: ffff88808ce1f048 R08: ffff8880955ba300 R09: 0000000000000002
R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: ffff88809201aee0
R13: ffff88809201a7c0 R14: dffffc0000000000 R15: ffff88808ce1f188
FS:  0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000089d6840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020000084 CR3: 000000009552c000 CR4: 00000000001406f0
Call Trace:
 sctp_outq_dequeue_data net/sctp/outqueue.c:90 [inline]
 sctp_outq_flush_data net/sctp/outqueue.c:1079 [inline]
 sctp_outq_flush+0xba2/0x2790 net/sctp/outqueue.c:1205
 sctp_outq_uncork+0x6c/0x80 net/sctp/outqueue.c:772
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1820 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1220 [inline]
 sctp_do_sm+0x513/0x5390 net/sctp/sm_sideeffect.c:1191
 sctp_assoc_bh_rcv+0x343/0x660 net/sctp/associola.c:1074
 sctp_inq_push+0x1ea/0x290 net/sctp/inqueue.c:95
 sctp_backlog_rcv+0x189/0xbc0 net/sctp/input.c:354
 sk_backlog_rcv include/net/sock.h:937 [inline]
 __release_sock+0x12e/0x3a0 net/core/sock.c:2413
 release_sock+0x59/0x1c0 net/core/sock.c:2929
 sctp_wait_for_connect+0x316/0x540 net/sctp/socket.c:8999
 sctp_sendmsg_to_asoc+0x13e2/0x17d0 net/sctp/socket.c:1968
 sctp_sendmsg+0x10a9/0x17e0 net/sctp/socket.c:2114
 inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xdd/0x130 net/socket.c:632
 ___sys_sendmsg+0x806/0x930 net/socket.c:2137
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2175
 __compat_sys_sendmsg net/compat.c:697 [inline]
 __do_compat_sys_sendmsg net/compat.c:704 [inline]
 __se_compat_sys_sendmsg net/compat.c:701 [inline]
 __ia32_compat_sys_sendmsg+0x7a/0xb0 net/compat.c:701
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x281/0xc98 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f09869
Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ffe8474c EFLAGS: 00000282 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000002001afc8
RDX: 0000000000000000 RSI: 00000000080ea078 RDI: 00000000ffe847a0
RBP: 0000000000001000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace fd6e1316b98b11f6 ]---
RIP: 0010:sctp_sched_rr_dequeue+0xd3/0x170 net/sctp/stream_sched_rr.c:141
Code: ea 03 80 3c 02 00 0f 85 a2 00 00 00 48 8b 5b 08 e8 62 20 ee fa 48 8d 7b 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 53 4c 8b 6b 30 4c 89 e7 49 83 ed 18 4c 89 ee e8 b4
RSP: 0018:ffff88808ce1f030 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8679cd9f
RDX: 0000000000000006 RSI: ffffffff8681c41e RDI: 0000000000000030
RBP: ffff88808ce1f048 R08: ffff8880955ba300 R09: 0000000000000002
R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: ffff88809201aee0
R13: ffff88809201a7c0 R14: dffffc0000000000 R15: ffff88808ce1f188
FS:  0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000089d6840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020000084 CR3: 000000009552c000 CR4: 00000000001406f0