[....] Starting enhanced syslogd: rsyslogd[ 11.720250] audit: type=1400 audit(1513632106.262:5): avc: denied { syslog } for pid=2994 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.244881] audit: type=1400 audit(1513632111.786:6): avc: denied { map } for pid=3132 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added 'ci-upstream-kasan-gce-5,10.128.0.58' (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 [ 23.418272] audit: type=1400 audit(1513632117.960:7): avc: denied { map } for pid=3146 comm="syzkaller254960" path="/root/syzkaller254960569" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 25.595079] kasan: CONFIG_KASAN_INLINE enabled [ 25.599904] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.607302] general protection fault: 0000 [#1] SMP KASAN [ 25.612811] Dumping ftrace buffer: [ 25.616323] (ftrace buffer empty) [ 25.620002] Modules linked in: [ 25.623163] CPU: 0 PID: 4253 Comm: syzkaller254960 Not tainted 4.15.0-rc4+ #227 [ 25.630575] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.639905] RIP: 0010:crypto_chacha20_crypt+0x537/0xbd0 [ 25.645231] RSP: 0018:ffff8801c49ff4a0 EFLAGS: 00010246 [ 25.650564] RAX: dffffc0000000000 RBX: 00000000e6000000 RCX: ffffffff8226421b [ 25.657800] RDX: 0000000000000000 RSI: ffff8801c41dbe40 RDI: ffff8801c49ff53c [ 25.665044] RBP: ffff8801c49ff6c0 R08: ffffed003978202c R09: ffff8801cbc10140 [ 25.672280] R10: ffff8801c49ff6e0 R11: ffffed003978202b R12: 0000000000000000 [ 25.679518] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 25.686754] FS: 00000000020b6880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 25.694948] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.700842] CR2: 00007f972ed02000 CR3: 00000001c4728001 CR4: 00000000001606f0 [ 25.708093] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.715340] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.722581] Call Trace: [ 25.725149] ? crypto_chacha20_setkey+0xc0/0xc0 [ 25.729791] ? __kmalloc+0x162/0x760 [ 25.733471] ? sock_kmalloc+0x112/0x190 [ 25.737411] ? skcipher_recvmsg+0x3f2/0xf10 [ 25.741699] ? sock_recvmsg+0xc9/0x110 [ 25.745554] ? sock_read_iter+0x35b/0x560 [ 25.749668] ? aio_read+0x2aa/0x3a0 [ 25.753259] ? do_io_submit+0xf8d/0x14f0 [ 25.757284] ? SyS_io_submit+0x27/0x30 [ 25.761140] ? entry_SYSCALL_64_fastpath+0x1f/0x96 [ 25.766046] ? mark_held_locks+0xaf/0x100 [ 25.770166] ? check_noncircular+0x20/0x20 [ 25.774368] ? retint_kernel+0x10/0x10 [ 25.778227] ? af_alg_pull_tsgl+0x8b6/0xc10 [ 25.782532] chacha20_simd+0xe4/0x410 [ 25.786308] ? chacha20_simd+0xe4/0x410 [ 25.790247] ? af_alg_get_rsgl+0x980/0x980 [ 25.794448] ? chacha20_dosimd+0x340/0x340 [ 25.798652] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.803639] ? sock_kmalloc+0x112/0x190 [ 25.807588] ? refcount_inc_not_zero+0xfe/0x180 [ 25.812222] ? refcount_add+0x60/0x60 [ 25.815986] ? copy_overflow+0x30/0x30 [ 25.819846] ? lock_sock_nested+0x91/0x110 [ 25.824046] ? trace_hardirqs_on+0xd/0x10 [ 25.828162] skcipher_recvmsg+0x733/0xf10 [ 25.832276] ? skcipher_recvmsg+0x733/0xf10 [ 25.836569] ? skcipher_release+0x50/0x50 [ 25.840687] ? selinux_socket_recvmsg+0x36/0x40 [ 25.845323] ? security_socket_recvmsg+0x91/0xc0 [ 25.850048] ? skcipher_release+0x50/0x50 [ 25.854164] sock_recvmsg+0xc9/0x110 [ 25.857845] sock_read_iter+0x35b/0x560 [ 25.861784] ? sock_recvmsg+0x110/0x110 [ 25.865724] ? selinux_file_permission+0x82/0x460 [ 25.870550] ? rw_verify_area+0xe5/0x2b0 [ 25.874589] aio_read+0x2aa/0x3a0 [ 25.878018] ? aio_write+0x5a0/0x5a0 [ 25.881724] ? lock_release+0xa40/0xa40 [ 25.885676] ? __might_sleep+0x95/0x190 [ 25.889623] do_io_submit+0xf8d/0x14f0 [ 25.893481] ? do_io_submit+0xf8d/0x14f0 [ 25.897516] ? aio_read+0x3a0/0x3a0 [ 25.901110] ? mm_fault_error+0x2c0/0x2c0 [ 25.905225] ? SyS_io_setup+0x1da/0x390 [ 25.909170] ? lock_downgrade+0x980/0x980 [ 25.913292] ? do_page_fault+0xee/0x720 [ 25.917239] ? __do_page_fault+0xc90/0xc90 [ 25.921449] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.926433] SyS_io_submit+0x27/0x30 [ 25.930112] ? SyS_io_submit+0x27/0x30 [ 25.933969] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 25.938690] RIP: 0033:0x440919 [ 25.941847] RSP: 002b:00007ffd91397ae8 EFLAGS: 00000213 ORIG_RAX: 00000000000000d1 [ 25.949520] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440919 [ 25.956758] RDX: 0000000020738000 RSI: 0000000000000001 RDI: 00007f972ed02000 [ 25.963993] RBP: 00000000000063e8 R08: 0000000000000000 R09: 0000000000000005 [ 25.971236] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000000000 [ 25.978479] R13: 0000000000401da0 R14: 0000000000000000 R15: 0000000000000000 executing program [ 25.985724] Code: 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d6 05 00 00 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 89 9d 7c fe ff ff 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 [ 26.004810] RIP: crypto_chacha20_crypt+0x537/0xbd0 RSP: ffff8801c49ff4a0 [ 26.011686] ---[ end trace f6c022a06f21d721 ]--- [ 26.016749] Kernel panic - not syncing: Fatal exception [ 26.022512] Dumping ftrace buffer: [ 26.026025] (ftrace buffer empty) [ 26.029700] Kernel Offset: disabled [ 26.033294] Rebooting in 86400 seconds..