[....] Starting enhanced syslogd: rsyslogd[ 12.395918] audit: type=1400 audit(1513817971.502:5): avc: denied { syslog } for pid=2995 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: [ 17.247968] audit: type=1400 audit(1513817976.354:6): avc: denied { map } for pid=3135 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-1,10.128.0.5' (ECDSA) to the list of known hosts. executing program executing program [ 23.745513] audit: type=1400 audit(1513817982.852:7): avc: denied { map } for pid=3149 comm="syzkaller791996" path="/root/syzkaller791996619" 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 [ 23.787497] kasan: CONFIG_KASAN_INLINE enabled [ 23.792156] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.799565] general protection fault: 0000 [#1] SMP KASAN [ 23.805090] Dumping ftrace buffer: [ 23.808597] (ftrace buffer empty) [ 23.812273] Modules linked in: [ 23.815437] CPU: 1 PID: 3149 Comm: syzkaller791996 Not tainted 4.15.0-rc2-mm1+ #39 [ 23.823108] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.832437] RIP: 0010:scatterwalk_copychunks+0x337/0x480 [ 23.837854] RSP: 0018:ffff8801c51df260 EFLAGS: 00010202 [ 23.843194] RAX: 0000000000000000 RBX: 0000000000000fa6 RCX: ffffffff825056d9 [ 23.850431] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000008 [ 23.857680] RBP: ffff8801c51df2c0 R08: ffffed0039223e7a R09: ffffed0039223e7a [ 23.864921] R10: 0000000000000002 R11: ffffed0039223e79 R12: 0000000000000fa6 [ 23.872254] R13: ffff8801c51df630 R14: dffffc0000000000 R15: 0000000000000000 [ 23.879498] FS: 0000000000757880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 23.887699] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.893557] CR2: 0000000020b10000 CR3: 00000001c5250006 CR4: 00000000001606e0 [ 23.900815] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.908056] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.915295] Call Trace: [ 23.917862] skcipher_walk_next+0x8db/0x1bd0 [ 23.922261] ? skcipher_walk_done+0xcb0/0xcb0 [ 23.926737] ? print_usage_bug+0x3f0/0x3f0 [ 23.930950] skcipher_walk_first+0x138/0x400 [ 23.935337] skcipher_walk_skcipher+0x519/0x6e0 [ 23.939976] skcipher_walk_virt+0x58/0xd0 [ 23.944103] crypto_chacha20_crypt+0xc9/0xbd0 [ 23.948572] ? crypto_chacha20_setkey+0xc0/0xc0 [ 23.953220] ? crypto_sm3_finup+0x8d/0x150 [ 23.957446] ? crypto_hash_walk_done+0x124/0x410 [ 23.962193] ? shash_ahash_finup+0x1d9/0x270 [ 23.966603] poly_tail_continue+0x42a/0x6b0 [ 23.970900] ? poly_tail_continue+0x42a/0x6b0 [ 23.975372] ? crypto_ahash_op+0xc4/0x140 [ 23.979508] poly_tail+0x40f/0x520 [ 23.983036] poly_cipherpad+0x33e/0x470 [ 23.986989] poly_cipher+0x303/0x440 [ 23.990675] poly_adpad+0x347/0x480 [ 23.994278] poly_ad+0x25c/0x300 [ 23.997612] poly_setkey+0x2fc/0x3e0 [ 24.001295] poly_init+0x16c/0x1d0 [ 24.004815] poly_genkey+0x422/0x590 [ 24.008496] chachapoly_encrypt+0x418/0x620 [ 24.012788] aead_recvmsg+0x1295/0x1bc0 [ 24.016738] ? aead_release+0x50/0x50 [ 24.020508] ? selinux_socket_recvmsg+0x36/0x40 [ 24.025154] ? security_socket_recvmsg+0x91/0xc0 [ 24.029881] ? aead_release+0x50/0x50 [ 24.033650] sock_recvmsg+0xc9/0x110 [ 24.037330] ? __sock_recv_wifi_status+0x210/0x210 [ 24.042237] ___sys_recvmsg+0x29b/0x630 [ 24.046183] ? ___sys_sendmsg+0x8a0/0x8a0 [ 24.050314] ? fget_raw+0x20/0x20 [ 24.053739] ? __handle_mm_fault+0x3dd0/0x3dd0 [ 24.058287] ? vmacache_find+0x5f/0x280 [ 24.062236] ? up_read+0x1a/0x40 [ 24.065571] ? __do_page_fault+0x3d6/0xc90 [ 24.069779] ? fd_install+0x4d/0x60 [ 24.073391] ? __fdget+0x18/0x20 [ 24.076729] __sys_recvmsg+0xe2/0x210 [ 24.080503] ? __sys_recvmsg+0xe2/0x210 [ 24.084445] ? SyS_sendmmsg+0x60/0x60 [ 24.088220] ? __do_page_fault+0xc90/0xc90 [ 24.092432] ? SyS_setsockopt+0x215/0x360 [ 24.096555] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.101568] SyS_recvmsg+0x2d/0x50 [ 24.105098] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 24.109831] RIP: 0033:0x43fef9 [ 24.112988] RSP: 002b:00007ffe4a12b2f8 EFLAGS: 00000217 ORIG_RAX: 000000000000002f [ 24.120670] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fef9 [ 24.127918] RDX: 0000000000000000 RSI: 0000000020c0c000 RDI: 0000000000000005 [ 24.135169] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 24.142421] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401860 [ 24.149668] R13: 00000000004018f0 R14: 0000000000000000 R15: 0000000000000000 [ 24.156934] Code: 89 ff e8 2d 6c 2a 00 4c 89 ea 49 89 c7 48 c1 ea 03 42 80 3c 32 00 0f 85 c9 00 00 00 49 8d 7f 08 4d 89 7d 00 48 89 fa 48 c1 ea 03 <42> 0f b6 14 32 84 d2 74 09 80 fa 03 0f 8e 9e 00 00 00 48 8b 45 [ 24.176067] RIP: scatterwalk_copychunks+0x337/0x480 RSP: ffff8801c51df260 [ 24.183051] ---[ end trace 735124b79716b6f9 ]--- [ 24.188106] Kernel panic - not syncing: Fatal exception [ 24.193945] Dumping ftrace buffer: [ 24.197473] (ftrace buffer empty) [ 24.201162] Kernel Offset: disabled [ 24.204761] Rebooting in 86400 seconds..