[....] Starting enhanced syslogd: rsyslogd[ 12.083653] audit: type=1400 audit(1514968367.212:5): avc: denied { syslog } for pid=3343 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: [ 16.952559] audit: type=1400 audit(1514968372.081:6): avc: denied { map } for pid=3482 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 '10.128.15.210' (ECDSA) to the list of known hosts. executing program [ 23.206573] audit: type=1400 audit(1514968378.335:7): avc: denied { map } for pid=3497 comm="syzkaller167371" path="/root/syzkaller167371561" 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 [ 23.251213] kasan: CONFIG_KASAN_INLINE enabled [ 23.255859] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.263227] general protection fault: 0000 [#1] SMP KASAN [ 23.268744] Dumping ftrace buffer: [ 23.272250] (ftrace buffer empty) [ 23.275943] Modules linked in: [ 23.279105] CPU: 1 PID: 3497 Comm: syzkaller167371 Not tainted 4.15.0-rc6+ #245 [ 23.286518] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.295860] RIP: 0010:blkcipher_walk_done+0x300/0xde0 [ 23.301017] RSP: 0018:ffff8801bf92f340 EFLAGS: 00010202 [ 23.306349] RAX: 0000000000000000 RBX: 00000000a74a7bf1 RCX: 0000000000000001 [ 23.313585] RDX: dffffc0000000000 RSI: 0000000000000400 RDI: 0000000000000008 [ 23.320822] RBP: ffff8801bf92f390 R08: 00000000fffff8f8 R09: 0000000000000000 [ 23.328059] R10: 0000000000000003 R11: 0000000000000000 R12: ffff8801bf92f640 [ 23.335294] R13: ffff8801bf92f4f0 R14: ffff8801bf92f538 R15: ffff8801bf92f518 [ 23.342915] FS: 000000000078d880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 23.351107] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.356964] CR2: 00000000201c9000 CR3: 00000001bfd09006 CR4: 00000000001606e0 [ 23.364205] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.371444] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.378683] Call Trace: [ 23.381256] glue_ctr_crypt_128bit+0x597/0xc20 [ 23.385823] ? __kernel_text_address+0xd/0x40 [ 23.390290] ? glue_ecb_crypt_128bit+0x5c0/0x5c0 [ 23.395022] ? rmd256_update+0x92/0x140 [ 23.398972] ? memset+0x31/0x40 [ 23.402219] ? rmd256_final+0x187/0x230 [ 23.406160] ? rmd256_update+0x140/0x140 [ 23.410187] ? memcpy+0x45/0x50 [ 23.413441] ctr_crypt+0x34/0x40 [ 23.416773] ? ctr_crypt+0x34/0x40 [ 23.420277] ? lrw_encrypt+0x430/0x430 [ 23.424131] __ablk_encrypt+0x1d1/0x2d0 [ 23.428073] ? ablk_set_key+0x1a0/0x1a0 [ 23.432024] ? shash_async_update+0x20/0x20 [ 23.436327] ? rmd256_update+0x92/0x140 [ 23.440268] ? __ablk_encrypt+0x2d0/0x2d0 [ 23.444400] ablk_encrypt+0x23e/0x2c0 [ 23.448167] ? __ablk_encrypt+0x2d0/0x2d0 [ 23.452282] skcipher_decrypt_ablkcipher+0x312/0x420 [ 23.457351] ? scatterwalk_ffwd+0xbf/0x370 [ 23.461556] poly_tail_continue+0x42a/0x6b0 [ 23.465951] ? crypto_ahash_op+0xc4/0x140 [ 23.470072] poly_tail+0x40f/0x520 [ 23.473580] poly_cipherpad+0x33e/0x470 [ 23.477523] poly_cipher+0x303/0x440 [ 23.481203] poly_adpad+0x347/0x480 [ 23.484799] poly_ad+0x25c/0x300 [ 23.488135] poly_setkey+0x2fc/0x3e0 [ 23.491818] poly_init+0x16c/0x1d0 [ 23.495325] poly_genkey+0x422/0x590 [ 23.499010] chachapoly_decrypt+0x73/0x90 [ 23.503137] aead_recvmsg+0x154a/0x1cf0 [ 23.507089] ? aead_release+0x50/0x50 [ 23.510857] ? selinux_socket_recvmsg+0x36/0x40 [ 23.515491] ? security_socket_recvmsg+0x91/0xc0 [ 23.520223] ? aead_release+0x50/0x50 [ 23.523992] sock_recvmsg+0xc9/0x110 [ 23.527674] ? __sock_recv_wifi_status+0x210/0x210 [ 23.532569] ___sys_recvmsg+0x2a4/0x640 [ 23.536530] ? ___sys_sendmsg+0x8b0/0x8b0 [ 23.540662] ? __do_page_fault+0x5f7/0xc90 [ 23.544865] ? lock_downgrade+0x980/0x980 [ 23.548994] ? __fget_light+0x297/0x380 [ 23.552946] ? fget_raw+0x20/0x20 [ 23.556367] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 23.560914] ? vmacache_find+0x5f/0x280 [ 23.564860] ? up_read+0x1a/0x40 [ 23.568193] ? __do_page_fault+0x3d6/0xc90 [ 23.572394] ? SYSC_accept4+0x4ff/0x870 [ 23.576337] ? __fdget+0x18/0x20 [ 23.579671] __sys_recvmsg+0xe2/0x210 [ 23.583437] ? __sys_recvmsg+0xe2/0x210 [ 23.588067] ? SyS_sendmmsg+0x60/0x60 [ 23.591834] ? __do_page_fault+0xc90/0xc90 [ 23.596244] ? SyS_setsockopt+0x215/0x360 [ 23.600365] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.605445] SyS_recvmsg+0x2d/0x50 [ 23.608958] entry_SYSCALL_64_fastpath+0x23/0x9a [ 23.613680] RIP: 0033:0x43fee9 [ 23.616835] RSP: 002b:00007ffdb85bedc8 EFLAGS: 00000217 ORIG_RAX: 000000000000002f [ 23.624880] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fee9 [ 23.632117] RDX: 0000000000000000 RSI: 0000000020318fc8 RDI: 0000000000000004 [ 23.639362] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 23.646598] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401850 [ 23.653836] R13: 00000000004018e0 R14: 0000000000000000 R15: 0000000000000000 [ 23.661079] 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 [ 23.680147] RIP: blkcipher_walk_done+0x300/0xde0 RSP: ffff8801bf92f340 [ 23.686862] ---[ end trace f8eb21d2614e4cb0 ]--- [ 23.691625] Kernel panic - not syncing: Fatal exception [ 23.697378] Dumping ftrace buffer: [ 23.700893] (ftrace buffer empty) [ 23.704572] Kernel Offset: disabled [ 23.708167] Rebooting in 86400 seconds..