[....] Starting enhanced syslogd: rsyslogd[ 12.618301] audit: type=1400 audit(1513440794.690:5): avc: denied { syslog } for pid=2993 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: [ 17.271395] audit: type=1400 audit(1513440799.343:6): avc: denied { map } for pid=3134 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-7,10.128.15.193' (ECDSA) to the list of known hosts. executing program [ 28.611550] audit: type=1400 audit(1513440810.683:7): avc: denied { map } for pid=3150 comm="syzkaller682513" path="/root/syzkaller682513094" 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 [ 28.642493] kasan: CONFIG_KASAN_INLINE enabled [ 28.647116] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.654496] general protection fault: 0000 [#1] SMP KASAN [ 28.660014] Dumping ftrace buffer: [ 28.663526] (ftrace buffer empty) [ 28.667202] Modules linked in: [ 28.670362] CPU: 1 PID: 3150 Comm: syzkaller682513 Not tainted 4.15.0-rc2-mm1+ #39 [ 28.678033] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.687360] RIP: 0010:blkcipher_walk_done+0x300/0xde0 [ 28.692513] RSP: 0018:ffff8801c4ecf330 EFLAGS: 00010202 [ 28.697843] RAX: 0000000000000000 RBX: 0000000060453082 RCX: 0000000000000001 [ 28.705077] RDX: dffffc0000000000 RSI: 0000000000000f60 RDI: 0000000000000008 [ 28.712314] RBP: ffff8801c4ecf380 R08: 00000000fffff8f8 R09: 0000000000000000 [ 28.719560] R10: 0000000000000004 R11: ffff8801bc0a8f50 R12: ffff8801c4ecf630 [ 28.726797] R13: ffff8801c4ecf4e0 R14: ffff8801c4ecf528 R15: ffff8801c4ecf508 [ 28.734038] FS: 00000000009dc880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 28.742231] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.748076] CR2: 000000002022efc8 CR3: 00000001ca816006 CR4: 00000000001606e0 [ 28.755314] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.762550] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.769786] Call Trace: [ 28.772361] glue_ctr_crypt_128bit+0x597/0xc20 [ 28.776921] ? glue_ecb_crypt_128bit+0x5c0/0x5c0 [ 28.781642] ? mark_held_locks+0xb2/0x100 [ 28.785755] ? get_user_pages_fast+0x277/0x340 [ 28.790300] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.795289] ? blkcipher_walk_next+0x653/0x13d0 [ 28.800399] ? get_user_pages_fast+0x14e/0x340 [ 28.804947] ? __kernel_fpu_end+0xad/0x180 [ 28.809149] ? fpu__restore+0x8c0/0x8c0 [ 28.813095] ? camellia_crypt_ctr_2way+0x27b/0x380 [ 28.818004] ctr_crypt+0x34/0x40 [ 28.821340] ? ctr_crypt+0x34/0x40 [ 28.824849] ? encrypt_callback+0x240/0x240 [ 28.829137] __ablk_encrypt+0x1d1/0x2d0 [ 28.833076] ? ablk_set_key+0x1a0/0x1a0 [ 28.837022] ? shash_async_update+0x20/0x20 [ 28.841315] ? add_wait_queue+0x290/0x290 [ 28.845431] ? __ablk_encrypt+0x2d0/0x2d0 [ 28.849544] ablk_encrypt+0x23e/0x2c0 [ 28.853310] ? __ablk_encrypt+0x2d0/0x2d0 [ 28.857423] skcipher_decrypt_ablkcipher+0x312/0x420 [ 28.862492] ? scatterwalk_ffwd+0xbf/0x370 [ 28.866698] poly_tail_continue+0x42a/0x6b0 [ 28.870984] ? crypto_ahash_op+0xc4/0x140 [ 28.875101] poly_tail+0x40f/0x520 [ 28.878606] poly_cipherpad+0x33e/0x470 [ 28.882549] poly_cipher+0x303/0x440 [ 28.886235] poly_adpad+0x347/0x480 [ 28.889828] poly_ad+0x25c/0x300 [ 28.893167] poly_setkey+0x2fc/0x3e0 [ 28.896847] poly_init+0x16c/0x1d0 [ 28.900351] poly_genkey+0x422/0x590 [ 28.904037] chachapoly_encrypt+0x418/0x620 [ 28.908329] aead_recvmsg+0x1295/0x1bc0 [ 28.912276] ? aead_release+0x50/0x50 [ 28.916047] ? selinux_socket_recvmsg+0x36/0x40 [ 28.920681] ? security_socket_recvmsg+0x91/0xc0 [ 28.925404] ? aead_release+0x50/0x50 [ 28.929167] sock_recvmsg+0xc9/0x110 [ 28.932847] ? __sock_recv_wifi_status+0x210/0x210 [ 28.937743] ___sys_recvmsg+0x29b/0x630 [ 28.941688] ? ___sys_sendmsg+0x8a0/0x8a0 [ 28.945810] ? vmacache_find+0x5f/0x280 [ 28.949754] ? up_read+0x1a/0x40 [ 28.953091] ? __do_page_fault+0x3d6/0xc90 [ 28.957292] ? fd_install+0x4d/0x60 [ 28.960890] ? __fdget+0x18/0x20 [ 28.964230] __sys_recvmsg+0xe2/0x210 [ 28.968002] ? __sys_recvmsg+0xe2/0x210 [ 28.971950] ? SyS_sendmmsg+0x60/0x60 [ 28.975716] ? __do_page_fault+0xc90/0xc90 [ 28.979919] ? SyS_setsockopt+0x215/0x360 [ 28.984045] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.989031] SyS_recvmsg+0x2d/0x50 [ 28.992541] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 28.997258] RIP: 0033:0x43ff89 [ 29.000414] RSP: 002b:00007ffcc1fbb2f8 EFLAGS: 00000217 ORIG_RAX: 000000000000002f [ 29.008087] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043ff89 [ 29.015323] RDX: 0000000000000002 RSI: 000000002022efc8 RDI: 0000000000000004 [ 29.022559] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 29.029801] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004018f0 [ 29.037037] R13: 0000000000401980 R14: 0000000000000000 R15: 0000000000000000 [ 29.044277] 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 [ 29.063345] RIP: blkcipher_walk_done+0x300/0xde0 RSP: ffff8801c4ecf330 [ 29.070030] ---[ end trace a1c6f34c0ca3f7e3 ]--- [ 29.074797] Kernel panic - not syncing: Fatal exception [ 29.080624] Dumping ftrace buffer: [ 29.084134] (ftrace buffer empty) [ 29.087810] Kernel Offset: disabled [ 29.091403] Rebooting in 86400 seconds..