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-mmots-kasan-gce-7,10.128.0.43' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 37.836589] kasan: CONFIG_KASAN_INLINE enabled [ 37.837424] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 37.838613] general protection fault: 0000 [#1] SMP KASAN [ 37.839348] Dumping ftrace buffer: [ 37.839846] (ftrace buffer empty) [ 37.840341] Modules linked in: [ 37.840825] CPU: 0 PID: 17658 Comm: syzkaller625686 Not tainted 4.14.0-mm1+ #25 [ 37.841801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.843019] task: ffff8801c734e280 task.stack: ffff8801c5f10000 [ 37.843820] RIP: 0010:scatterwalk_copychunks+0x337/0x480 [ 37.844566] RSP: 0018:ffff8801c5f175c8 EFLAGS: 00010202 [ 37.845286] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff82502da9 [ 37.846237] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000008 [ 37.847187] RBP: ffff8801c5f17628 R08: ffff8801c5f177c0 R09: 0000000000000000 [ 37.848161] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 37.849112] R13: ffff8801c5f177c0 R14: dffffc0000000000 R15: 0000000000000000 [ 37.850082] FS: 00007f8ce5e49700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 37.851156] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.851929] CR2: 0000000020284000 CR3: 00000001ce96c000 CR4: 00000000001406f0 [ 37.852898] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.853860] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.854847] Call Trace: [ 37.855207] blkcipher_walk_next+0xca0/0x13d0 [ 37.855806] ? lock_sock_nested+0x91/0x110 [ 37.856372] ? trace_hardirqs_on+0xd/0x10 [ 37.858089] ? __local_bh_enable_ip+0x121/0x230 [ 37.862726] blkcipher_walk_first+0x261/0x570 [ 37.867188] ? null_compress+0x80/0x80 [ 37.871039] blkcipher_walk_virt+0x219/0x2a0 [ 37.875411] skcipher_null_crypt+0x10e/0x2d0 [ 37.879785] ? null_compress+0x80/0x80 executing program [ 37.883636] ? iov_iter_copy_from_user_atomic+0xe30/0xe30 [ 37.889139] ? __kmalloc+0x471/0x760 [ 37.892827] ? null_compress+0x80/0x80 [ 37.896678] skcipher_encrypt_blkcipher+0x213/0x310 [ 37.901656] ? skcipher_encrypt_blkcipher+0x213/0x310 [ 37.906812] ? skcipher_setkey_blkcipher+0x170/0x170 [ 37.911882] ? af_alg_alloc_areq+0x1f2/0x2f0 [ 37.916257] aead_recvmsg+0xc96/0x1970 [ 37.920110] ? aead_recvmsg+0xb38/0x1970 [ 37.924136] ? release_sock+0x1d4/0x2a0 [ 37.928081] ? aead_sendpage_nokey+0xa0/0xa0 [ 37.932455] ? aead_check_key.isra.6+0x61/0x200 executing program executing program executing program executing program [ 37.937090] aead_recvmsg_nokey+0x60/0x80 [ 37.941203] ? aead_recvmsg+0x1970/0x1970 [ 37.945315] sock_recvmsg+0xc9/0x110 [ 37.948994] ? __sock_recv_wifi_status+0x210/0x210 [ 37.953888] ___sys_recvmsg+0x29b/0x630 [ 37.957832] ? ___sys_sendmsg+0x8a0/0x8a0 [ 37.961951] ? fget_raw+0x20/0x20 [ 37.965369] ? __handle_mm_fault+0x3dd0/0x3dd0 [ 37.969915] ? vmacache_find+0x5f/0x280 [ 37.973856] ? up_read+0x1a/0x40 [ 37.977188] ? __do_page_fault+0x3d6/0xc90 [ 37.981386] ? lock_downgrade+0x980/0x980 [ 37.985501] ? __fdget+0x18/0x20 [ 37.988835] __sys_recvmsg+0xe2/0x210 [ 37.992653] ? __sys_recvmsg+0xe2/0x210 [ 37.996591] ? SyS_sendmmsg+0x60/0x60 [ 38.000367] ? __do_page_fault+0xc90/0xc90 [ 38.004568] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 38.009551] ? lockdep_sys_exit+0x47/0xf0 [ 38.013669] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 38.018650] SyS_recvmsg+0x2d/0x50 [ 38.022157] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 38.026876] RIP: 0033:0x4466c9 executing program executing program executing program executing program [ 38.030031] RSP: 002b:00007f8ce5e48dc8 EFLAGS: 00000202 ORIG_RAX: 000000000000002f [ 38.037701] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004466c9 [ 38.044937] RDX: 0000000000002000 RSI: 0000000020222fc8 RDI: 0000000000000006 [ 38.052171] RBP: 0000000000000086 R08: 00007f8ce5e49700 R09: 00007f8ce5e49700 [ 38.059405] R10: 00007f8ce5e49700 R11: 0000000000000202 R12: 0000000000000000 [ 38.066638] R13: 00007ffe3cc2e51f R14: 00007f8ce5e499c0 R15: 0000000000000000 executing program [ 38.073882] 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 [ 38.092942] RIP: scatterwalk_copychunks+0x337/0x480 RSP: ffff8801c5f175c8 [ 38.099884] ---[ end trace 52b72f449649c1ea ]--- [ 38.105674] Kernel panic - not syncing: Fatal exception [ 38.111042] Dumping ftrace buffer: [ 38.114546] (ftrace buffer empty) [ 38.118222] Kernel Offset: disabled [ 38.121815] Rebooting in 86400 seconds..