[....] Starting enhanced syslogd: rsyslogd[ 10.736855] audit: type=1400 audit(1513748677.937:5): avc: denied { syslog } for pid=2982 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 17.094036] audit: type=1400 audit(1513748684.294:6): avc: denied { map } for pid=3121 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-kasan-gce-9,10.128.0.28' (ECDSA) to the list of known hosts. executing program executing program [ 28.069063] audit: type=1400 audit(1513748695.269:7): avc: denied { map } for pid=3137 comm="syzkaller713350" path="/root/syzkaller713350990" 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 [ 28.108167] kasan: CONFIG_KASAN_INLINE enabled [ 28.112816] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.120199] general protection fault: 0000 [#1] SMP KASAN [ 28.125719] Dumping ftrace buffer: [ 28.129227] (ftrace buffer empty) [ 28.132903] Modules linked in: [ 28.136065] CPU: 0 PID: 3137 Comm: syzkaller713350 Not tainted 4.15.0-rc4+ #229 [ 28.143474] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.152805] RIP: 0010:scatterwalk_copychunks+0x337/0x480 [ 28.158216] RSP: 0018:ffff8801c914f260 EFLAGS: 00010202 [ 28.163543] RAX: 0000000000000000 RBX: 0000000000000fa6 RCX: ffffffff824fa2e9 [ 28.170777] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000008 [ 28.178016] RBP: ffff8801c914f2c0 R08: ffffed003b3d65e2 R09: ffffed003b3d65e2 [ 28.185253] R10: 0000000000000002 R11: ffffed003b3d65e1 R12: 0000000000000fa6 [ 28.192488] R13: ffff8801c914f630 R14: dffffc0000000000 R15: 0000000000000000 [ 28.199725] FS: 0000000001fd6880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 28.207917] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.213762] CR2: 0000000020b10000 CR3: 00000001cb59f003 CR4: 00000000001606f0 [ 28.220999] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.228248] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.235482] Call Trace: [ 28.238050] skcipher_walk_next+0x8db/0x1bd0 [ 28.242428] ? skcipher_walk_done+0xcb0/0xcb0 [ 28.246895] ? check_noncircular+0x20/0x20 [ 28.251103] skcipher_walk_first+0x138/0x400 [ 28.255479] skcipher_walk_skcipher+0x519/0x6e0 [ 28.260115] skcipher_walk_virt+0x58/0xd0 [ 28.264230] crypto_chacha20_crypt+0xc9/0xbd0 [ 28.268692] ? crypto_chacha20_setkey+0xc0/0xc0 [ 28.273329] ? crypto_sm3_finup+0x8d/0x150 [ 28.277540] ? crypto_hash_walk_done+0x124/0x410 [ 28.282265] ? shash_ahash_finup+0x1d9/0x270 [ 28.286650] poly_tail_continue+0x42a/0x6b0 [ 28.290936] ? poly_tail_continue+0x42a/0x6b0 [ 28.295393] ? crypto_ahash_op+0xc4/0x140 [ 28.299509] poly_tail+0x40f/0x520 [ 28.303023] poly_cipherpad+0x33e/0x470 [ 28.306969] poly_cipher+0x303/0x440 [ 28.310649] poly_adpad+0x347/0x480 [ 28.314244] poly_ad+0x25c/0x300 [ 28.317577] poly_setkey+0x2fc/0x3e0 [ 28.321257] poly_init+0x16c/0x1d0 [ 28.324763] poly_genkey+0x422/0x590 [ 28.328447] chachapoly_encrypt+0x418/0x620 [ 28.332738] aead_recvmsg+0x1289/0x1bb0 [ 28.336686] ? aead_release+0x50/0x50 [ 28.340455] ? selinux_socket_recvmsg+0x36/0x40 [ 28.345090] ? security_socket_recvmsg+0x91/0xc0 [ 28.349811] ? aead_release+0x50/0x50 [ 28.353577] sock_recvmsg+0xc9/0x110 [ 28.357255] ? __sock_recv_wifi_status+0x210/0x210 [ 28.362153] ___sys_recvmsg+0x295/0x620 [ 28.366099] ? ___sys_sendmsg+0x890/0x890 [ 28.370214] ? __do_page_fault+0x5f7/0xc90 [ 28.374415] ? lock_downgrade+0x980/0x980 [ 28.378537] ? fget_raw+0x20/0x20 [ 28.381956] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 28.386505] ? vmacache_find+0x5f/0x280 [ 28.390456] ? up_read+0x1a/0x40 [ 28.393788] ? __do_page_fault+0x3d6/0xc90 [ 28.397986] ? fd_install+0x4d/0x60 [ 28.401580] ? __fdget+0x18/0x20 [ 28.404914] __sys_recvmsg+0xe2/0x210 [ 28.408679] ? __sys_recvmsg+0xe2/0x210 [ 28.412625] ? SyS_sendmmsg+0x60/0x60 [ 28.416398] ? __do_page_fault+0xc90/0xc90 [ 28.420605] ? SyS_setsockopt+0x215/0x360 [ 28.424726] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.429711] SyS_recvmsg+0x2d/0x50 [ 28.433220] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 28.437941] RIP: 0033:0x43fef9 [ 28.441097] RSP: 002b:00007fffcb8883b8 EFLAGS: 00000217 ORIG_RAX: 000000000000002f [ 28.448768] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fef9 [ 28.456004] RDX: 0000000000000000 RSI: 0000000020c0c000 RDI: 0000000000000005 [ 28.463244] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 28.470481] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401860 [ 28.477714] R13: 00000000004018f0 R14: 0000000000000000 R15: 0000000000000000 [ 28.484957] Code: 89 ff e8 4d 68 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 [ 28.504432] RIP: scatterwalk_copychunks+0x337/0x480 RSP: ffff8801c914f260 [ 28.511415] ---[ end trace f1a2043c345cc283 ]--- [ 28.516191] Kernel panic - not syncing: Fatal exception [ 28.522273] Dumping ftrace buffer: [ 28.525785] (ftrace buffer empty) [ 28.529461] Kernel Offset: disabled [ 28.533052] Rebooting in 86400 seconds..