binder: 24052:24066 transaction failed 29201/-71, size 0-8 line 2760 sock: sock_set_timeout: `syz-executor6' (pid 24081) tries to set negative timeout 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: 1 PID: 24082 Comm: syz-executor2 Not tainted 4.15.0-rc4-next-20171221+ #78 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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:ffff8801d07e7298 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000fa7 RCX: ffffffff82513ac9 RDX: 0000000000000001 RSI: ffffc90004137000 RDI: 0000000000000008 RBP: ffff8801d07e72f8 R08: ffffed003b208383 R09: ffffed003b208383 R10: 0000000000000003 R11: ffffed003b208382 R12: 0000000000000fa7 R13: ffff8801d07e7610 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007ff48655d700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020027000 CR3: 00000001bd613005 CR4: 00000000001626e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skcipher_next_slow crypto/skcipher.c:272 [inline] skcipher_walk_next+0x8db/0x1bd0 crypto/skcipher.c:357 skcipher_walk_first+0x138/0x400 crypto/skcipher.c:442 skcipher_walk_skcipher+0x51b/0x6e0 crypto/skcipher.c:470 skcipher_walk_virt+0x58/0xd0 crypto/skcipher.c:480 chacha20_simd+0x167/0x410 arch/x86/crypto/chacha20_glue.c:80 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 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:314 [inline] aead_recvmsg+0x137f/0x1cf0 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:801 [inline] sock_recvmsg+0xc9/0x110 net/socket.c:808 ___sys_recvmsg+0x2a4/0x640 net/socket.c:2177 __sys_recvmsg+0xe2/0x210 net/socket.c:2222 SYSC_recvmsg net/socket.c:2234 [inline] SyS_recvmsg+0x2d/0x50 net/socket.c:2229 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452ac9 RSP: 002b:00007ff48655cc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 0000000000000000 RSI: 0000000020c0c000 RDI: 0000000000000016 RBP: 000000000000001a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee310 R13: 00000000ffffffff R14: 00007ff48655d6d4 R15: 0000000000000000 Code: 89 ff e8 cd 89 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: ffff8801d07e7298 RIP: scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RSP: ffff8801d07e7298 RIP: scatterwalk_copychunks+0x337/0x480 crypto/scatterwalk.c:55 RSP: ffff8801d07e7298 ---[ end trace 913b75de927bb0d8 ]---