[....] Starting enhanced syslogd: rsyslogd[ 10.734273] audit: type=1400 audit(1514517207.779:5): avc: denied { syslog } for pid=2997 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: [ 16.404177] audit: type=1400 audit(1514517213.448:6): 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 '10.128.0.60' (ECDSA) to the list of known hosts. executing program [ 34.214779] audit: type=1400 audit(1514517231.259:7): avc: denied { map } for pid=3155 comm="syzkaller276526" path="/root/syzkaller276526501" 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 [ 34.259899] kasan: CONFIG_KASAN_INLINE enabled [ 34.264567] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.271941] general protection fault: 0000 [#1] SMP KASAN [ 34.277451] Dumping ftrace buffer: [ 34.280959] (ftrace buffer empty) [ 34.284639] Modules linked in: [ 34.287809] CPU: 0 PID: 3155 Comm: syzkaller276526 Not tainted 4.15.0-rc5+ #239 [ 34.295218] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.304551] RIP: 0010:skcipher_walk_done+0x278/0xcb0 [ 34.309628] RSP: 0018:ffff8801c80b74e0 EFLAGS: 00010202 [ 34.314957] RAX: 0000000000000000 RBX: 0000000000000020 RCX: 0000000000000001 [ 34.322196] RDX: dffffc0000000000 RSI: 0000000000000007 RDI: 0000000000000008 [ 34.329434] RBP: ffff8801c80b7530 R08: 0000000000000000 R09: 0000000000000000 [ 34.336673] R10: 0000000000000010 R11: 0000000000000010 R12: ffff8801c80b75c0 [ 34.343908] R13: 0000000000000020 R14: ffff8801c80b75e0 R15: ffff8801c80b75a0 [ 34.351145] FS: 0000000001f21880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 34.359337] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.365185] CR2: 0000000020f91f80 CR3: 00000001ca0bb005 CR4: 00000000001606f0 [ 34.372437] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.379675] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.386914] Call Trace: [ 34.389484] ctr_crypt+0x1b5/0x450 [ 34.393000] ? kernel_fpu_end+0xe/0x20 [ 34.396854] ? sha512_finup+0x300/0x580 [ 34.400796] ? aesni_xts_enc8+0x40/0x40 [ 34.404748] ? shash_async_update+0x20/0x20 [ 34.409041] simd_skcipher_decrypt+0x1f3/0x2d0 [ 34.413589] ? simd_skcipher_decrypt+0x1f3/0x2d0 [ 34.418311] poly_tail_continue+0x42a/0x6b0 [ 34.422597] ? crypto_ahash_op+0xc4/0x140 [ 34.426712] poly_tail+0x40f/0x520 [ 34.430221] poly_cipherpad+0x33e/0x470 [ 34.434163] poly_cipher+0x303/0x440 [ 34.437843] poly_adpad+0x347/0x480 [ 34.441442] poly_ad+0x25c/0x300 [ 34.444778] poly_setkey+0x2fc/0x3e0 [ 34.448459] poly_init+0x16c/0x1d0 [ 34.451967] poly_genkey+0x422/0x590 [ 34.455651] chachapoly_decrypt+0x73/0x90 [ 34.459767] aead_recvmsg+0x154a/0x1cf0 [ 34.463716] ? aead_release+0x50/0x50 [ 34.467492] ? selinux_socket_recvmsg+0x36/0x40 [ 34.472141] ? security_socket_recvmsg+0x91/0xc0 [ 34.476875] ? aead_release+0x50/0x50 [ 34.480647] sock_recvmsg+0xc9/0x110 [ 34.484328] ? __sock_recv_wifi_status+0x210/0x210 [ 34.489225] ___sys_recvmsg+0x2a4/0x640 [ 34.493182] ? ___sys_sendmsg+0x8b0/0x8b0 [ 34.497300] ? __do_page_fault+0x5f7/0xc90 [ 34.501505] ? lock_downgrade+0x980/0x980 [ 34.505624] ? __fget_light+0x297/0x380 [ 34.509569] ? fget_raw+0x20/0x20 [ 34.512993] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 34.517542] ? vmacache_find+0x5f/0x280 [ 34.521505] ? up_read+0x1a/0x40 [ 34.524849] ? __do_page_fault+0x3d6/0xc90 [ 34.529052] ? SYSC_accept4+0x4ff/0x870 [ 34.533005] ? __fdget+0x18/0x20 [ 34.536347] __sys_recvmsg+0xe2/0x210 [ 34.540115] ? __sys_recvmsg+0xe2/0x210 [ 34.544056] ? SyS_sendmmsg+0x60/0x60 [ 34.547823] ? __do_page_fault+0xc90/0xc90 [ 34.552024] ? SyS_setsockopt+0x215/0x360 [ 34.556143] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 34.561129] SyS_recvmsg+0x2d/0x50 [ 34.564651] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 34.569372] RIP: 0033:0x43ff19 [ 34.572528] RSP: 002b:00007ffcce329378 EFLAGS: 00000213 ORIG_RAX: 000000000000002f [ 34.580201] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043ff19 [ 34.587438] RDX: 0000000040000060 RSI: 00000000205f4fc8 RDI: 0000000000000004 [ 34.594674] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 34.601909] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401880 [ 34.609143] R13: 0000000000401910 R14: 0000000000000000 R15: 0000000000000000 [ 34.616388] Code: 00 fc ff df 48 c1 e9 03 80 3c 11 00 0f 85 f1 08 00 00 48 8d 78 08 48 ba 00 00 00 00 00 fc ff df 49 89 47 20 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e b5 08 00 00 48 8b 55 d0 [ 34.635472] RIP: skcipher_walk_done+0x278/0xcb0 RSP: ffff8801c80b74e0 [ 34.642087] ---[ end trace a2eaa1f1d7c5fa9d ]--- [ 34.646828] Kernel panic - not syncing: Fatal exception [ 34.652557] Dumping ftrace buffer: [ 34.656069] (ftrace buffer empty) [ 34.659748] Kernel Offset: disabled [ 34.663343] Rebooting in 86400 seconds..