[....] Starting enhanced syslogd: rsyslogd[ 12.891874] audit: type=1400 audit(1513112636.232:5): 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: [ 36.914461] audit: type=1400 audit(1513112660.255:6): avc: denied { map } for pid=3138 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-net-kasan-gce-5,10.128.0.54' (ECDSA) to the list of known hosts. executing program [ 43.073583] audit: type=1400 audit(1513112666.414:7): avc: denied { map } for pid=3150 comm="syzkaller646372" path="/root/syzkaller646372112" 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 [ 43.111445] kasan: CONFIG_KASAN_INLINE enabled [ 43.116080] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.123563] general protection fault: 0000 [#1] SMP KASAN [ 43.129069] Dumping ftrace buffer: [ 43.132584] (ftrace buffer empty) [ 43.136262] Modules linked in: [ 43.139430] CPU: 1 PID: 3150 Comm: syzkaller646372 Not tainted 4.15.0-rc2+ #150 [ 43.146840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.156176] RIP: 0010:scatterwalk_copychunks+0x337/0x480 [ 43.161589] RSP: 0018:ffff8801c48af2f0 EFLAGS: 00010202 [ 43.166917] RAX: 0000000000000000 RBX: 0000000000000029 RCX: ffffffff82502699 [ 43.174173] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000008 [ 43.181407] RBP: ffff8801c48af350 R08: ffffed0038a1fb3e R09: ffffed0038a1fb3e [ 43.188645] R10: 0000000000000003 R11: ffffed0038a1fb3d R12: 0000000000000029 [ 43.195881] R13: ffff8801c48af660 R14: dffffc0000000000 R15: 0000000000000000 [ 43.203118] FS: 0000000002587880(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 43.211309] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.217154] CR2: 00000000208b4fb0 CR3: 00000001c4ea8000 CR4: 00000000001406e0 [ 43.224390] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.231624] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.238858] Call Trace: [ 43.241417] skcipher_walk_next+0x8db/0x1bd0 [ 43.245794] ? skcipher_walk_done+0xcb0/0xcb0 [ 43.250260] ? memcpy+0x45/0x50 [ 43.253506] skcipher_walk_first+0x138/0x400 [ 43.257882] ? rmd256_final+0x187/0x230 [ 43.261822] skcipher_walk_skcipher+0x519/0x6e0 [ 43.266456] skcipher_walk_virt+0x58/0xd0 [ 43.271152] chacha20_simd+0x167/0x410 [ 43.275011] ? crypto_shash_final+0xdb/0x1f0 [ 43.279385] ? rmd256_transform+0x20/0x1580 [ 43.283672] ? chacha20_dosimd+0x340/0x340 [ 43.287870] ? shash_finup_unaligned+0x47/0x60 [ 43.292415] ? crypto_hash_walk_done+0x124/0x410 [ 43.297139] ? shash_ahash_finup+0x1d9/0x270 [ 43.301525] poly_tail_continue+0x42a/0x6b0 [ 43.305810] ? poly_tail_continue+0x42a/0x6b0 [ 43.310268] ? crypto_ahash_op+0xc4/0x140 [ 43.314380] poly_tail+0x40f/0x520 [ 43.317887] poly_cipherpad+0x33e/0x470 [ 43.321826] poly_cipher+0x303/0x440 [ 43.325505] poly_adpad+0x347/0x480 [ 43.329100] poly_ad+0x25c/0x300 [ 43.332434] poly_setkey+0x2fc/0x3e0 [ 43.336115] poly_init+0x16c/0x1d0 [ 43.339620] poly_genkey+0x422/0x590 [ 43.343302] chachapoly_decrypt+0x73/0x90 [ 43.347414] aead_recvmsg+0x14a7/0x1bc0 [ 43.351367] ? aead_release+0x50/0x50 [ 43.355134] ? selinux_socket_recvmsg+0x36/0x40 [ 43.359766] ? security_socket_recvmsg+0x91/0xc0 [ 43.364492] ? aead_release+0x50/0x50 [ 43.368259] sock_recvmsg+0xc9/0x110 [ 43.371938] ? __sock_recv_wifi_status+0x210/0x210 [ 43.376832] ___sys_recvmsg+0x29b/0x630 [ 43.380774] ? ___sys_sendmsg+0x8a0/0x8a0 [ 43.384896] ? vmacache_find+0x5f/0x280 [ 43.388843] ? up_read+0x1a/0x40 [ 43.392174] ? __do_page_fault+0x3d6/0xc90 [ 43.396372] ? fd_install+0x4d/0x60 [ 43.399966] ? __fdget+0x18/0x20 [ 43.403301] __sys_recvmsg+0xe2/0x210 [ 43.407065] ? __sys_recvmsg+0xe2/0x210 [ 43.411005] ? SyS_sendmmsg+0x60/0x60 [ 43.414775] ? __do_page_fault+0xc90/0xc90 [ 43.418976] ? SyS_setsockopt+0x215/0x360 [ 43.423092] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 43.428075] SyS_recvmsg+0x2d/0x50 [ 43.431582] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 43.436300] RIP: 0033:0x43ffa9 [ 43.439888] RSP: 002b:00007ffebe599ec8 EFLAGS: 00000207 ORIG_RAX: 000000000000002f [ 43.447560] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043ffa9 [ 43.454795] RDX: 0000000000012163 RSI: 0000000020d63fc8 RDI: 0000000000000004 [ 43.462028] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 43.469271] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000401910 [ 43.476509] R13: 00000000004019a0 R14: 0000000000000000 R15: 0000000000000000 [ 43.483750] Code: 89 ff e8 1d 71 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 [ 43.502810] RIP: scatterwalk_copychunks+0x337/0x480 RSP: ffff8801c48af2f0 [ 43.509762] ---[ end trace 26c3a860183bb446 ]--- [ 43.514658] Kernel panic - not syncing: Fatal exception [ 43.520352] Dumping ftrace buffer: [ 43.523865] (ftrace buffer empty) [ 43.527548] Kernel Offset: disabled [ 43.531144] Rebooting in 86400 seconds..