kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 3294 Comm: syz-executor7 Not tainted 4.14.0-next-20171124+ #51 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d86801c0 task.stack: ffff8801cbf50000 RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:86 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RIP: 0010:scatterwalk_copychunks+0x337/0x480 crypto/scatterwalk.c:55 RSP: 0018:ffff8801cbf575c8 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff82503809 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000008 RBP: ffff8801cbf57628 R08: ffff8801cbf577c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801cbf577c0 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f76e9880700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f099a0aedb8 CR3: 00000001cc297000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: blkcipher_next_slow crypto/blkcipher.c:175 [inline] blkcipher_walk_next+0xca0/0x13d0 crypto/blkcipher.c:255 blkcipher_walk_first+0x261/0x570 crypto/blkcipher.c:346 blkcipher_walk_virt+0x219/0x2a0 crypto/blkcipher.c:308 skcipher_null_crypt+0x10e/0x2d0 crypto/crypto_null.c:85 skcipher_crypt_blkcipher crypto/skcipher.c:619 [inline] skcipher_encrypt_blkcipher+0x213/0x310 crypto/skcipher.c:628 crypto_skcipher_encrypt include/crypto/skcipher.h:445 [inline] crypto_aead_copy_sgl crypto/algif_aead.c:90 [inline] _aead_recvmsg crypto/algif_aead.c:228 [inline] aead_recvmsg+0xc96/0x1970 crypto/algif_aead.c:313 aead_recvmsg_nokey+0x60/0x80 crypto/algif_aead.c:431 sock_recvmsg_nosec net/socket.c:805 [inline] sock_recvmsg+0xc9/0x110 net/socket.c:812 ___sys_recvmsg+0x29b/0x630 net/socket.c:2207 __sys_recvmsg+0xe2/0x210 net/socket.c:2252 SYSC_recvmsg net/socket.c:2264 [inline] SyS_recvmsg+0x2d/0x50 net/socket.c:2259 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452879 RSP: 002b:00007f76e987fbe8 EFLAGS: 00000212 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452879 RDX: 0000000000002000 RSI: 0000000020222fc8 RDI: 0000000000000003 RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f2608 R13: 00000000ffffffff R14: 00007f76e98806d4 R15: 0000000000000002 Code: 89 ff e8 6d 6f 2a 00 4c 89 ea 49 89 c7 48 c1 ea 03 42 80 3c 32 00 0f 85 c9 00 00 00 49 8d 7f 08 4d 89 7d 00 48 89 fa 48 c1 ea 03 <42> 0f b6 14 32 84 d2 74 09 80 fa 03 0f 8e 9e 00 00 00 48 8b 45 RIP: scatterwalk_start include/crypto/scatterwalk.h:86 [inline] RSP: ffff8801cbf575c8 RIP: scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RSP: ffff8801cbf575c8 RIP: scatterwalk_copychunks+0x337/0x480 crypto/scatterwalk.c:55 RSP: ffff8801cbf575c8 ---[ end trace 448f143dbe55e551 ]---