audit: type=1400 audit(1577181912.767:36): avc:  denied  { map } for  pid=7782 comm="syz-executor246" path="/root/syz-executor246020502" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
skbuff: skb_over_panic: text:00000000ac4603da len:194 put:82 head:000000003e5a646d data:000000003e5a646d tail:0xc2 end:0xc0 dev:<NULL>
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:104!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7782 Comm: syz-executor246 Not tainted 4.19.91-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:skb_panic+0x17c/0x17e net/core/skbuff.c:104
Code: 4c 8b 4d b8 8b 8b 80 00 00 00 41 57 45 89 f0 4c 89 ea ff 75 d0 4c 89 e6 48 c7 c7 40 94 49 88 ff 75 c8 ff 75 c0 e8 3b 9f 9a fb <0f> 0b e8 d0 3a b0 fb 4c 8b 6d 08 e8 87 b8 e7 fb 48 c7 c1 00 9e 49
RSP: 0018:ffff88809262f9f0 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff888091976bc0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8155bb16 RDI: ffffed10124c5f30
RBP: ffff88809262fa58 R08: 0000000000000086 R09: ffffed1015d05079
R10: ffffed1015d05078 R11: ffff8880ae8283c7 R12: ffffffff88499e40
R13: ffffffff86c20fa7 R14: 0000000000000052 R15: ffffffff88499400
FS:  0000000001178880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005650a6ceb180 CR3: 00000000942c8000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 skb_over_panic net/core/skbuff.c:109 [inline]
 skb_put.cold+0x23/0x23 net/core/skbuff.c:1702
 skb_put_data include/linux/skbuff.h:2109 [inline]
 sctp_addto_chunk+0xe7/0x2a0 net/sctp/sm_make_chunk.c:1507
 sctp_make_strreset_req+0x392/0x3e0 net/sctp/sm_make_chunk.c:3687
 sctp_send_reset_streams+0x7ed/0xe10 net/sctp/stream.c:424
 sctp_setsockopt_reset_streams net/sctp/socket.c:4094 [inline]
 sctp_setsockopt net/sctp/socket.c:4443 [inline]
 sctp_setsockopt+0x31a3/0x4f70 net/sctp/socket.c:4286
 sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3046
 __sys_setsockopt+0x17a/0x280 net/socket.c:1901
 __do_sys_setsockopt net/socket.c:1912 [inline]
 __se_sys_setsockopt net/socket.c:1909 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1909
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4402d9
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff2926bd38 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402d9
RDX: 0000000000000077 RSI: 0000000000000084 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 00000000000002de R09: 00000000004002c8
R10: 000000002081e000 R11: 0000000000000246 R12: 0000000000401b60
R13: 0000000000401bf0 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 533e27ff3db68061 ]---
RIP: 0010:skb_panic+0x17c/0x17e net/core/skbuff.c:104
Code: 4c 8b 4d b8 8b 8b 80 00 00 00 41 57 45 89 f0 4c 89 ea ff 75 d0 4c 89 e6 48 c7 c7 40 94 49 88 ff 75 c8 ff 75 c0 e8 3b 9f 9a fb <0f> 0b e8 d0 3a b0 fb 4c 8b 6d 08 e8 87 b8 e7 fb 48 c7 c1 00 9e 49
RSP: 0018:ffff88809262f9f0 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff888091976bc0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8155bb16 RDI: ffffed10124c5f30
RBP: ffff88809262fa58 R08: 0000000000000086 R09: ffffed1015d05079
R10: ffffed1015d05078 R11: ffff8880ae8283c7 R12: ffffffff88499e40
R13: ffffffff86c20fa7 R14: 0000000000000052 R15: ffffffff88499400
FS:  0000000001178880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005650a6ceb180 CR3: 00000000942c8000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400