[....] Starting enhanced syslogd: rsyslogd[ 11.747187] audit: type=1400 audit(1512798967.066:5): 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: [ 27.176136] audit: type=1400 audit(1512798982.495:6): avc: denied { map } for pid=3137 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-mmots-kasan-gce-9,10.128.0.42' (ECDSA) to the list of known hosts. executing program executing program [ 33.225866] audit: type=1400 audit(1512798988.545:7): avc: denied { map } for pid=3151 comm="syzkaller934654" path="/root/syzkaller934654055" 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 [ 33.315542] kasan: CONFIG_KASAN_INLINE enabled [ 33.320208] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.327584] general protection fault: 0000 [#1] SMP KASAN [ 33.333094] Dumping ftrace buffer: [ 33.336599] (ftrace buffer empty) [ 33.340276] Modules linked in: [ 33.343440] CPU: 0 PID: 3178 Comm: syzkaller934654 Not tainted 4.15.0-rc2-mm1+ #39 [ 33.351111] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.360442] RIP: 0010:blkcipher_walk_done+0x300/0xde0 executing program [ 33.365603] RSP: 0018:ffff8801c472f720 EFLAGS: 00010202 [ 33.370930] RAX: 0000000000000000 RBX: 000000000000000f RCX: 0000000000000001 [ 33.378178] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000008 [ 33.385413] RBP: ffff8801c472f770 R08: ffffed0038ee6ff6 R09: 0000000000000000 [ 33.392651] R10: 0000000000000001 R11: ffffed0038ee6ff5 R12: ffff8801c472f8e8 [ 33.399895] R13: ffff8801c472f7d0 R14: ffff8801c472f818 R15: ffff8801c472f7f8 [ 33.407132] FS: 00007f662a62c700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 33.415323] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.421181] CR2: 00007f6629e2ae78 CR3: 00000001c499c000 CR4: 00000000001406f0 [ 33.428420] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.435661] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.442913] Call Trace: [ 33.445478] skcipher_null_crypt+0x1da/0x2d0 [ 33.449884] ? null_compress+0x80/0x80 [ 33.453740] ? iov_iter_copy_from_user_atomic+0xe30/0xe30 [ 33.459251] ? null_compress+0x80/0x80 [ 33.463105] skcipher_encrypt_blkcipher+0x213/0x310 [ 33.468085] ? skcipher_encrypt_blkcipher+0x213/0x310 [ 33.473241] ? skcipher_setkey_blkcipher+0x170/0x170 [ 33.478309] ? af_alg_alloc_areq+0x1f2/0x2f0 [ 33.482684] aead_recvmsg+0x7ed/0x1bc0 [ 33.486541] ? aead_recvmsg+0x670/0x1bc0 [ 33.490577] ? aead_release+0x50/0x50 [ 33.494345] ? selinux_socket_recvmsg+0x36/0x40 [ 33.498977] ? security_socket_recvmsg+0x91/0xc0 [ 33.503700] ? aead_release+0x50/0x50 [ 33.507466] sock_recvmsg+0xc9/0x110 [ 33.511144] ? __sock_recv_wifi_status+0x210/0x210 [ 33.516049] ___sys_recvmsg+0x29b/0x630 [ 33.519992] ? ___sys_sendmsg+0x8a0/0x8a0 [ 33.524114] ? fget_raw+0x20/0x20 [ 33.527536] ? __handle_mm_fault+0x3dd0/0x3dd0 [ 33.532091] ? vmacache_find+0x5f/0x280 [ 33.536030] ? vmacache_update+0xfe/0x130 [ 33.540156] ? up_read+0x1a/0x40 [ 33.543494] ? __do_page_fault+0x3d6/0xc90 [ 33.547694] ? lock_downgrade+0x980/0x980 [ 33.551809] ? __fdget+0x18/0x20 [ 33.555143] __sys_recvmsg+0xe2/0x210 [ 33.558908] ? __sys_recvmsg+0xe2/0x210 [ 33.562846] ? SyS_sendmmsg+0x60/0x60 [ 33.566612] ? __do_page_fault+0xc90/0xc90 [ 33.570810] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 33.575791] ? lockdep_sys_exit+0x47/0xf0 [ 33.579919] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 33.584903] SyS_recvmsg+0x2d/0x50 [ 33.588425] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 33.593146] RIP: 0033:0x445689 [ 33.596301] RSP: 002b:00007f662a62bdc8 EFLAGS: 00000202 ORIG_RAX: 000000000000002f [ 33.603981] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445689 [ 33.611216] RDX: 0000000000000000 RSI: 0000000020539fc8 RDI: 0000000000000005 [ 33.618452] RBP: 0000000000000000 R08: 00007f662a62c700 R09: 00007f662a62c700 [ 33.625685] R10: 00007f662a62c700 R11: 0000000000000202 R12: 0000000000000000 [ 33.632922] R13: 00007ffe2f07ea9f R14: 00007f662a62c9c0 R15: 0000000000000000 [ 33.640164] 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 [ 33.659231] RIP: blkcipher_walk_done+0x300/0xde0 RSP: ffff8801c472f720 [ 33.666104] ---[ end trace ba7a0ca2ade7f5f3 ]--- [ 33.672821] Kernel panic - not syncing: Fatal exception [ 33.678223] Dumping ftrace buffer: [ 33.681731] (ftrace buffer empty) [ 33.685414] Kernel Offset: disabled [ 33.689012] Rebooting in 86400 seconds..