usercopy: kernel memory overwrite attempt detected to 00000000159db0f2 (kmalloc-1024) (968 bytes)
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kernel BUG at mm/usercopy.c:72!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 13344 Comm: syz-executor3 Not tainted 4.15.0-rc5+ #170
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:report_usercopy mm/usercopy.c:64 [inline]
RIP: 0010:__check_object_size+0x3a2/0x4f0 mm/usercopy.c:264
RSP: 0018:ffff8801bd3cf0c0 EFLAGS: 00010286
RAX: 0000000000000061 RBX: ffffffff85529380 RCX: 0000000000000000
RDX: 0000000000000061 RSI: ffffc9000339c000 RDI: ffffed0037a79e0c
RBP: ffff8801bd3cf1b0 R08: 1ffff10037a79d9a R09: 0000000000000000
R10: 00000000fda8759a R11: 0000000000000000 R12: ffffffff85529340
R13: ffff8801bf3ebb50 R14: 00000000000003c8 R15: ffffea0006fcfa80
FS:  00007fc89e1d1700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000920008 CR3: 00000001bae70003 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 check_object_size include/linux/thread_info.h:112 [inline]
 check_copy_size include/linux/thread_info.h:143 [inline]
 copy_from_user include/linux/uaccess.h:146 [inline]
 memdup_user+0x46/0x90 mm/util.c:168
 do_ip_setsockopt.isra.12+0x1483/0x3160 net/ipv4/ip_sockglue.c:1090
 ip_setsockopt+0x3a/0xb0 net/ipv4/ip_sockglue.c:1248
 sctp_setsockopt+0x2b6/0x61a0 net/sctp/socket.c:4127
 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978
 SYSC_setsockopt net/socket.c:1821 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1800
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452ac9
RSP: 002b:00007fc89e1d0c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9
RDX: 0000000000000030 RSI: 0000000000000000 RDI: 0000000000000016
RBP: 000000000000057c R08: 00000000000003c8 R09: 0000000000000000
R10: 0000000020347000 R11: 0000000000000212 R12: 00000000006f6440
R13: 00000000ffffffff R14: 00007fc89e1d16d4 R15: 0000000000000000
Code: 48 0f 44 da e8 00 a0 c1 ff 48 8b 85 28 ff ff ff 4d 89 f1 4c 89 e9 4c 89 e2 48 89 de 48 c7 c7 40 94 52 85 49 89 c0 e8 c6 59 ab ff <0f> 0b 48 c7 c0 00 92 52 85 eb 96 48 c7 c0 40 92 52 85 eb 8d 48 
RIP: report_usercopy mm/usercopy.c:64 [inline] RSP: ffff8801bd3cf0c0
RIP: __check_object_size+0x3a2/0x4f0 mm/usercopy.c:264 RSP: ffff8801bd3cf0c0
---[ end trace d9ec6e0568cab399 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..