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: 4958 Comm: syz-executor4 Not tainted 4.15.0-rc2+ #145 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: 000000005896e3bf task.stack: 0000000082aa1456 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:ffff8801cc0f7320 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000fe2 RCX: ffffffff824fe5c9 RDX: 0000000000000001 RSI: ffffc90003f11000 RDI: 0000000000000008 RBP: ffff8801cc0f7380 R08: ffffed00391ed64c R09: ffffed00391ed64c R10: 0000000000000004 R11: ffffed00391ed64b R12: 0000000000000fe2 R13: ffff8801cc0f7630 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f12eef29700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'. CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'. CR2: 000000002072bf80 CR3: 00000001cd3b1000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'. Call Trace: skcipher_next_slow crypto/skcipher.c:272 [inline] skcipher_walk_next+0x8db/0x1bd0 crypto/skcipher.c:357 netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'. skcipher_walk_done+0x43c/0xcb0 crypto/skcipher.c:154 netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'. chacha20_simd+0x288/0x410 arch/x86/crypto/chacha20_glue.c:89 crypto_skcipher_decrypt include/crypto/skcipher.h:463 [inline] chacha_decrypt crypto/chacha20poly1305.c:152 [inline] poly_tail_continue+0x42a/0x6b0 crypto/chacha20poly1305.c:167 netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'. poly_tail+0x40f/0x520 crypto/chacha20poly1305.c:201 poly_cipherpad+0x33e/0x470 crypto/chacha20poly1305.c:231 poly_cipher+0x303/0x440 crypto/chacha20poly1305.c:262 poly_adpad+0x347/0x480 crypto/chacha20poly1305.c:292 poly_ad+0x25c/0x300 crypto/chacha20poly1305.c:316 poly_setkey+0x2fc/0x3e0 crypto/chacha20poly1305.c:343 poly_init+0x16c/0x1d0 crypto/chacha20poly1305.c:366 poly_genkey+0x422/0x590 crypto/chacha20poly1305.c:406 chacha_encrypt crypto/chacha20poly1305.c:446 [inline] chachapoly_encrypt+0x418/0x620 crypto/chacha20poly1305.c:467 crypto_aead_encrypt include/crypto/aead.h:330 [inline] _aead_recvmsg crypto/algif_aead.c:308 [inline] aead_recvmsg+0x1295/0x1bc0 crypto/algif_aead.c:329 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: 0033:0x452a39 RSP: 002b:00007f12eef28c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000015 RCX: 0000000000452a39 RDX: 0000000000000002 RSI: 000000002022efc8 RDI: 0000000000000015 RBP: 00007f12eef26610 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000015 R13: 0000000000000001 R14: 00000000006f62c0 R15: 0000000000000000 Code: 89 ff e8 1d 71 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: ffff8801cc0f7320 RIP: scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RSP: ffff8801cc0f7320 RIP: scatterwalk_copychunks+0x337/0x480 crypto/scatterwalk.c:55 RSP: ffff8801cc0f7320 ---[ end trace 0c4ed615cd296dae ]---