sctp: [Deprecated]: syz-executor5 (pid 16777) Use of int in maxseg socket option. Use struct sctp_assoc_value instead kernel tried to execute NX-protected page - exploit attempt? (uid: 0) BUG: unable to handle kernel paging request at ffff880214d12c00 IP: 0xffff880214d12c00 PGD 404e067 P4D 404e067 PUD 4051067 PMD 1df18b063 PTE 8000000214d12163 Oops: 0011 [#1] SMP Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 16786 Comm: syz-executor4 Not tainted 4.15.0-rc3-next-20171214+ #67 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:0xffff880214d12c00 RSP: 0018:ffffc900010c7c70 EFLAGS: 00010212 RAX: ffff8801def81900 RBX: ffff8801e2dd8310 RCX: ffffffff811acd8d RDX: ffff8801def81948 RSI: ffffc90002ded000 RDI: ffff8801e2dd8360 RBP: ffffc900010c7c80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801dedc9dc8 R13: 0000000000010000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f1df9a2c700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff880214d12c00 CR3: 00000001dd63c000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000020001000 DR3: 0000000020001000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: crypto_ahash_init include/crypto/hash.h:506 [inline] hash_sendmsg+0xc2/0x340 crypto/algif_hash.c:91 sock_sendmsg_nosec net/socket.c:636 [inline] sock_sendmsg+0x51/0x70 net/socket.c:646 ___sys_sendmsg+0x35e/0x3b0 net/socket.c:2026 __sys_sendmsg+0x50/0x90 net/socket.c:2060 SYSC_sendmsg net/socket.c:2071 [inline] SyS_sendmsg+0x2d/0x50 net/socket.c:2067 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a39 RSP: 002b:00007f1df9a2bc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39 RDX: 000000000403ffff RSI: 0000000020d7bfc8 RDI: 0000000000000019 RBP: 0000000000000048 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee760 R13: 00000000ffffffff R14: 00007f1df9a2c6d4 R15: 0000000000000000 Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e0 81 a3 16 02 RIP: 0xffff880214d12c00 RSP: ffffc900010c7c70 CR2: ffff880214d12c00 ---[ end trace 2f920463c8d82a39 ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..