INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-kasan-gce-3,10.128.0.7' (ECDSA) to the list of known hosts. 2017/11/24 16:14:48 parsed 1 programs 2017/11/24 16:14:48 executed programs: 0 syzkaller login: [ 25.959504] kasan: CONFIG_KASAN_INLINE enabled [ 25.960270] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.961376] general protection fault: 0000 [#1] SMP KASAN [ 25.962110] Dumping ftrace buffer: [ 25.962584] (ftrace buffer empty) [ 25.963079] Modules linked in: [ 25.963513] CPU: 1 PID: 3090 Comm: syz-executor1 Not tainted 4.14.0+ #192 [ 25.964419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.965654] task: ffff8801cd96c180 task.stack: ffff8801cd970000 [ 25.966457] RIP: 0010:scatterwalk_copychunks+0x337/0x480 [ 25.967177] RSP: 0018:ffff8801cd9775c8 EFLAGS: 00010202 [ 25.967887] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff824fd239 [ 25.968910] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000008 [ 25.969877] RBP: ffff8801cd977628 R08: ffff8801cd9777c0 R09: 0000000000000000 [ 25.970846] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 25.971797] R13: ffff8801cd9777c0 R14: dffffc0000000000 R15: 0000000000000000 [ 25.972778] FS: 00007fea80540700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 25.973924] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.974764] CR2: 0000000000000000 CR3: 00000001cc76a000 CR4: 00000000001406e0 [ 25.975720] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.976710] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.977662] Call Trace: [ 25.978027] blkcipher_walk_next+0xca0/0x13d0 [ 25.978624] ? lock_sock_nested+0x91/0x110 [ 25.979188] ? trace_hardirqs_on+0xd/0x10 [ 25.979765] ? __local_bh_enable_ip+0x121/0x230 [ 25.984402] blkcipher_walk_first+0x261/0x570 [ 25.988872] ? null_compress+0x80/0x80 [ 25.992725] blkcipher_walk_virt+0x219/0x2a0 [ 25.997099] skcipher_null_crypt+0x10e/0x2d0 [ 26.001483] ? null_compress+0x80/0x80 [ 26.005338] ? iov_iter_copy_from_user_atomic+0xe30/0xe30 [ 26.010842] ? __kmalloc+0x471/0x760 [ 26.014539] ? null_compress+0x80/0x80 [ 26.018399] skcipher_encrypt_blkcipher+0x213/0x310 [ 26.023384] ? skcipher_encrypt_blkcipher+0x213/0x310 [ 26.028543] ? skcipher_setkey_blkcipher+0x170/0x170 [ 26.033613] ? af_alg_alloc_areq+0x1f2/0x2f0 [ 26.037988] aead_recvmsg+0xc96/0x1970 [ 26.041849] ? aead_recvmsg+0xb38/0x1970 [ 26.045877] ? release_sock+0x1d4/0x2a0 [ 26.049825] ? aead_sendpage_nokey+0xa0/0xa0 [ 26.054202] ? aead_check_key.isra.6+0x61/0x200 [ 26.058837] aead_recvmsg_nokey+0x60/0x80 [ 26.062951] ? aead_recvmsg+0x1970/0x1970 [ 26.067069] sock_recvmsg+0xc9/0x110 [ 26.070748] ? __sock_recv_wifi_status+0x210/0x210 [ 26.075644] ___sys_recvmsg+0x29b/0x630 [ 26.079591] ? ___sys_sendmsg+0x8a0/0x8a0 [ 26.083706] ? vm_mmap_pgoff+0x198/0x280 [ 26.087734] ? userfaultfd_unmap_complete+0x327/0x510 [ 26.092893] ? fget_raw+0x20/0x20 [ 26.096313] ? schedule+0xf5/0x430 [ 26.099819] ? __schedule+0x2060/0x2060 [ 26.103757] ? up_read+0x40/0x40 [ 26.107090] ? down_read_killable+0x180/0x180 [ 26.111555] ? security_mmap_file+0x143/0x180 [ 26.116019] ? __fdget+0x18/0x20 [ 26.119351] __sys_recvmsg+0xe2/0x210 [ 26.123118] ? __sys_recvmsg+0xe2/0x210 [ 26.127058] ? SyS_sendmmsg+0x60/0x60 [ 26.130829] ? SyS_futex+0x269/0x390 [ 26.134513] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.139495] SyS_recvmsg+0x2d/0x50 [ 26.143002] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 26.147720] RIP: 0033:0x452879 [ 26.150873] RSP: 002b:00007fea8053fbe8 EFLAGS: 00000212 ORIG_RAX: 000000000000002f [ 26.158547] RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452879 [ 26.165783] RDX: 0000000000002000 RSI: 0000000020222fc8 RDI: 0000000000000003 [ 26.173020] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 [ 26.180258] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f2608 [ 26.187501] R13: 00000000ffffffff R14: 00007fea805406d4 R15: 0000000000000002 [ 26.194753] 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 [ 26.213821] RIP: scatterwalk_copychunks+0x337/0x480 RSP: ffff8801cd9775c8 [ 26.220775] ---[ end trace 3da5cb962c3d91ec ]--- [ 26.225515] Kernel panic - not syncing: Fatal exception [ 26.231157] Dumping ftrace buffer: [ 26.234670] (ftrace buffer empty) [ 26.238350] Kernel Offset: disabled [ 26.241944] Rebooting in 86400 seconds..