[....] Starting enhanced syslogd: rsyslogd[ 12.570408] audit: type=1400 audit(1513088839.728:5): avc: denied { syslog } for pid=2996 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 35.611894] audit: type=1400 audit(1513088862.769:6): avc: denied { map } for pid=3143 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-net-kasan-gce-6,10.128.0.27' (ECDSA) to the list of known hosts. executing program [ 41.853412] audit: type=1400 audit(1513088869.011:7): avc: denied { map } for pid=3155 comm="syzkaller691756" path="/root/syzkaller691756485" 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 [ 41.883307] kasan: CONFIG_KASAN_INLINE enabled [ 41.887953] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.895348] general protection fault: 0000 [#1] SMP KASAN [ 41.900863] Dumping ftrace buffer: [ 41.904369] (ftrace buffer empty) [ 41.908046] Modules linked in: [ 41.911213] CPU: 1 PID: 3155 Comm: syzkaller691756 Not tainted 4.15.0-rc2+ #150 [ 41.918622] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.927951] RIP: 0010:blkcipher_walk_done+0x300/0xde0 [ 41.933110] RSP: 0018:ffff8801c53ff4a0 EFLAGS: 00010202 [ 41.938437] RAX: 0000000000000000 RBX: 0000000064417904 RCX: 0000000000000001 [ 41.945671] RDX: dffffc0000000000 RSI: 0000000000000fd6 RDI: 0000000000000008 [ 41.952906] RBP: ffff8801c53ff4f0 R08: ffffed00399af7fb R09: 0000000000000000 [ 41.960151] R10: 0000000000000003 R11: ffffed00399af7fa R12: ffff8801c53ff6a8 [ 41.967385] R13: ffff8801c53ff590 R14: ffff8801c53ff5d8 R15: ffff8801c53ff5b8 [ 41.974623] FS: 0000000001255880(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 41.982816] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.988660] CR2: 0000000020931fd0 CR3: 00000001c5153000 CR4: 00000000001406e0 [ 41.995897] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.003131] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.010372] Call Trace: [ 42.012926] ? crypto_inc+0x74/0x1b0 [ 42.016607] crypto_ctr_crypt+0x3ca/0x840 [ 42.020719] ? rmd256_update+0x92/0x140 [ 42.024660] ? blowfish_setkey+0x710/0x710 [ 42.028857] ? crypto_rfc3686_create+0xc40/0xc40 [ 42.033583] ? shash_ahash_finup+0x1d9/0x270 [ 42.037959] ? crypto_rfc3686_create+0xc40/0xc40 [ 42.042678] skcipher_decrypt_blkcipher+0x213/0x310 [ 42.047660] ? skcipher_decrypt_blkcipher+0x213/0x310 [ 42.052815] ? skcipher_encrypt_blkcipher+0x310/0x310 [ 42.057977] ? scatterwalk_ffwd+0xbf/0x370 [ 42.062177] poly_tail_continue+0x42a/0x6b0 [ 42.066463] ? crypto_ahash_op+0xc4/0x140 [ 42.070578] poly_tail+0x40f/0x520 [ 42.074084] poly_cipherpad+0x33e/0x470 [ 42.078028] poly_cipher+0x303/0x440 [ 42.081706] poly_adpad+0x347/0x480 [ 42.085299] poly_ad+0x25c/0x300 [ 42.088631] poly_setkey+0x2fc/0x3e0 [ 42.092315] poly_init+0x16c/0x1d0 [ 42.095823] poly_genkey+0x422/0x590 [ 42.099502] chachapoly_encrypt+0x418/0x620 [ 42.103792] aead_recvmsg+0x1295/0x1bc0 [ 42.107739] ? aead_release+0x50/0x50 [ 42.111507] ? selinux_socket_recvmsg+0x36/0x40 [ 42.116141] ? security_socket_recvmsg+0x91/0xc0 [ 42.120865] ? aead_release+0x50/0x50 [ 42.124631] sock_recvmsg+0xc9/0x110 [ 42.128321] ? __sock_recv_wifi_status+0x210/0x210 [ 42.133222] ___sys_recvmsg+0x29b/0x630 [ 42.137178] ? ___sys_sendmsg+0x8a0/0x8a0 [ 42.141298] ? rcu_note_context_switch+0x710/0x710 [ 42.146212] ? fget_raw+0x20/0x20 [ 42.149632] ? __sys_sendmmsg+0x1e6/0x5f0 [ 42.153745] ? __sys_sendmmsg+0x3f0/0x5f0 [ 42.157869] ? SyS_sendmsg+0x50/0x50 [ 42.161549] ? __fdget+0x18/0x20 [ 42.164881] __sys_recvmsg+0xe2/0x210 [ 42.168647] ? __sys_recvmsg+0xe2/0x210 [ 42.172595] ? SyS_sendmmsg+0x60/0x60 [ 42.176364] ? __do_page_fault+0xc90/0xc90 [ 42.180566] ? SyS_setsockopt+0x215/0x360 [ 42.184686] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.189670] SyS_recvmsg+0x2d/0x50 [ 42.193180] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 42.197910] RIP: 0033:0x43ffa9 [ 42.201067] RSP: 002b:00007fff368d1388 EFLAGS: 00000207 ORIG_RAX: 000000000000002f [ 42.208739] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043ffa9 [ 42.215974] RDX: 0000000000000020 RSI: 00000000201f5000 RDI: 0000000000000004 [ 42.223210] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 42.230444] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000401910 [ 42.237680] R13: 00000000004019a0 R14: 0000000000000000 R15: 0000000000000000 [ 42.244923] Code: 00 fc ff df 48 c1 e9 03 80 3c 11 00 0f 85 7a 09 00 00 48 8d 78 08 48 ba 00 00 00 00 00 fc ff df 49 89 45 20 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e 3e 09 00 00 4c 89 f9 8b [ 42.263985] RIP: blkcipher_walk_done+0x300/0xde0 RSP: ffff8801c53ff4a0 [ 42.270692] ---[ end trace b9d7792ae65afa89 ]--- [ 42.275603] Kernel panic - not syncing: Fatal exception [ 42.281332] Dumping ftrace buffer: [ 42.284837] (ftrace buffer empty) [ 42.288513] Kernel Offset: disabled [ 42.292108] Rebooting in 86400 seconds..