[....] Starting enhanced syslogd: rsyslogd[ 13.023974] audit: type=1400 audit(1514967528.823:5): avc: denied { syslog } for pid=3344 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: [ 18.530708] audit: type=1400 audit(1514967534.330:6): avc: denied { map } for pid=3485 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 '10.128.0.27' (ECDSA) to the list of known hosts. executing program [ 24.803043] audit: type=1400 audit(1514967540.602:7): avc: denied { map } for pid=3499 comm="syzkaller241446" path="/root/syzkaller241446574" 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 [ 24.827226] kasan: CONFIG_KASAN_INLINE enabled [ 24.827240] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.827248] general protection fault: 0000 [#1] SMP KASAN [ 24.827253] Dumping ftrace buffer: [ 24.827256] (ftrace buffer empty) [ 24.827258] Modules linked in: [ 24.827266] CPU: 1 PID: 3499 Comm: syzkaller241446 Not tainted 4.15.0-rc5+ #173 [ 24.827269] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.827282] RIP: 0010:blkcipher_walk_done+0x300/0xde0 [ 24.827285] RSP: 0018:ffff8801c027f340 EFLAGS: 00010202 [ 24.827289] RAX: 0000000000000000 RBX: 00000000a74a7bf1 RCX: 0000000000000001 [ 24.827293] RDX: dffffc0000000000 RSI: 0000000000000400 RDI: 0000000000000008 [ 24.827296] RBP: ffff8801c027f390 R08: 00000000fffff8f8 R09: 0000000000000000 [ 24.827299] R10: 0000000000000003 R11: 0000000000000000 R12: ffff8801c027f640 [ 24.827302] R13: ffff8801c027f4f0 R14: ffff8801c027f538 R15: ffff8801c027f518 [ 24.827307] FS: 0000000001046880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 24.827311] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.827315] CR2: 00000000201c9000 CR3: 00000001c09f5005 CR4: 00000000001606e0 [ 24.827321] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.827324] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.827325] Call Trace: [ 24.827337] glue_ctr_crypt_128bit+0x597/0xc20 [ 24.827343] ? __kernel_text_address+0xd/0x40 [ 24.827353] ? glue_ecb_crypt_128bit+0x5c0/0x5c0 [ 24.827361] ? rmd256_update+0x92/0x140 [ 24.827367] ? memset+0x31/0x40 [ 24.827372] ? rmd256_final+0x187/0x230 [ 24.827377] ? rmd256_update+0x140/0x140 [ 24.827380] ? memcpy+0x45/0x50 [ 24.827394] ctr_crypt+0x34/0x40 [ 24.827397] ? ctr_crypt+0x34/0x40 [ 24.827401] ? lrw_encrypt+0x430/0x430 [ 24.827407] __ablk_encrypt+0x1d1/0x2d0 [ 24.827412] ? ablk_set_key+0x1a0/0x1a0 [ 24.827419] ? shash_async_update+0x20/0x20 [ 24.827422] ? rmd256_update+0x92/0x140 [ 24.827427] ? __ablk_encrypt+0x2d0/0x2d0 [ 24.827432] ablk_encrypt+0x23e/0x2c0 [ 24.827436] ? __ablk_encrypt+0x2d0/0x2d0 [ 24.827440] skcipher_decrypt_ablkcipher+0x312/0x420 [ 24.827444] ? scatterwalk_ffwd+0xbf/0x370 [ 24.827450] poly_tail_continue+0x42a/0x6b0 [ 24.827454] ? crypto_ahash_op+0xc4/0x140 [ 24.827460] poly_tail+0x40f/0x520 [ 24.827466] poly_cipherpad+0x33e/0x470 [ 24.827473] poly_cipher+0x303/0x440 [ 24.827478] poly_adpad+0x347/0x480 [ 24.827485] poly_ad+0x25c/0x300 [ 24.827490] poly_setkey+0x2fc/0x3e0 [ 24.827496] poly_init+0x16c/0x1d0 [ 24.827501] poly_genkey+0x422/0x590 [ 24.827508] chachapoly_decrypt+0x73/0x90 [ 24.827512] aead_recvmsg+0x154a/0x1cf0 [ 24.827525] ? aead_release+0x50/0x50 [ 24.827532] ? selinux_socket_recvmsg+0x36/0x40 [ 24.827536] ? security_socket_recvmsg+0x91/0xc0 [ 24.827541] ? aead_release+0x50/0x50 [ 24.827547] sock_recvmsg+0xc9/0x110 [ 24.827551] ? __sock_recv_wifi_status+0x210/0x210 [ 24.827557] ___sys_recvmsg+0x2a4/0x640 [ 24.827564] ? ___sys_sendmsg+0x8b0/0x8b0 [ 24.827572] ? __do_page_fault+0x5f7/0xc90 [ 24.827577] ? lock_downgrade+0x980/0x980 [ 24.827585] ? __fget_light+0x297/0x380 [ 24.827589] ? fget_raw+0x20/0x20 [ 24.827594] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 24.827597] ? vmacache_find+0x5f/0x280 [ 24.827604] ? up_read+0x1a/0x40 [ 24.827608] ? __do_page_fault+0x3d6/0xc90 [ 24.827612] ? SYSC_accept4+0x4ff/0x870 [ 24.827619] ? __fdget+0x18/0x20 [ 24.827625] __sys_recvmsg+0xe2/0x210 [ 24.827629] ? __sys_recvmsg+0xe2/0x210 [ 24.827633] ? SyS_sendmmsg+0x60/0x60 [ 24.827639] ? __do_page_fault+0xc90/0xc90 [ 24.827645] ? SyS_setsockopt+0x215/0x360 [ 24.827654] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.827661] SyS_recvmsg+0x2d/0x50 [ 24.827667] entry_SYSCALL_64_fastpath+0x23/0x9a [ 24.827670] RIP: 0033:0x43ff19 [ 24.827672] RSP: 002b:00007ffce23dfc18 EFLAGS: 00000217 ORIG_RAX: 000000000000002f [ 24.827676] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043ff19 [ 24.827679] RDX: 0000000000000000 RSI: 0000000020318fc8 RDI: 0000000000000004 [ 24.827681] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 24.827683] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401880 [ 24.827685] R13: 0000000000401910 R14: 0000000000000000 R15: 0000000000000000 [ 24.827694] 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 [ 24.827763] RIP: blkcipher_walk_done+0x300/0xde0 RSP: ffff8801c027f340 [ 24.827769] ---[ end trace ca435b26a13c286a ]--- [ 24.827772] Kernel panic - not syncing: Fatal exception [ 24.828927] Dumping ftrace buffer: [ 24.828929] (ftrace buffer empty) [ 24.828931] Kernel Offset: disabled [ 25.282559] Rebooting in 86400 seconds..