[....] Starting enhanced syslogd: rsyslogd[ 11.951709] audit: type=1400 audit(1512703124.522:5): avc: denied { syslog } for pid=2991 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: [ 17.931123] audit: type=1400 audit(1512703130.501:6): avc: denied { map } for pid=3133 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-5,10.128.0.20' (ECDSA) to the list of known hosts. executing program [ 28.894416] audit: type=1400 audit(1512703141.465:7): avc: denied { map } for pid=3148 comm="syzkaller999333" path="/root/syzkaller999333887" 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 [ 28.931799] kasan: CONFIG_KASAN_INLINE enabled [ 28.936458] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.943844] general protection fault: 0000 [#1] SMP KASAN [ 28.949361] Dumping ftrace buffer: [ 28.952875] (ftrace buffer empty) [ 28.956554] Modules linked in: [ 28.959714] CPU: 0 PID: 3148 Comm: syzkaller999333 Not tainted 4.15.0-rc2+ #145 [ 28.967127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.976449] task: 00000000b7d71379 task.stack: 0000000022d174e7 [ 28.982478] RIP: 0010:scatterwalk_copychunks+0x337/0x480 [ 28.987889] RSP: 0018:ffff8801c52272c0 EFLAGS: 00010202 [ 28.993215] RAX: 0000000000000000 RBX: 0000000000000fe1 RCX: ffffffff824fe5c9 [ 29.000455] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000008 [ 29.007688] RBP: ffff8801c5227320 R08: ffffed0038a4da32 R09: ffffed0038a4da32 [ 29.014925] R10: 0000000000000002 R11: ffffed0038a4da31 R12: 0000000000000fe1 [ 29.022166] R13: ffff8801c5227630 R14: dffffc0000000000 R15: 0000000000000000 [ 29.029403] FS: 0000000001b0b880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 29.037593] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.043439] CR2: 000000002072bf80 CR3: 00000001c512f000 CR4: 00000000001406f0 [ 29.050676] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.057912] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.065149] Call Trace: [ 29.067716] skcipher_walk_next+0x8db/0x1bd0 [ 29.072097] ? skcipher_walk_done+0xcb0/0xcb0 [ 29.076564] skcipher_walk_first+0x138/0x400 [ 29.080942] ? memzero_explicit+0xe/0x10 [ 29.084977] ? tgr160_final+0x8b/0xc0 [ 29.088744] skcipher_walk_skcipher+0x519/0x6e0 [ 29.093379] skcipher_walk_virt+0x58/0xd0 [ 29.097505] chacha20_simd+0x167/0x410 [ 29.101368] ? tgr128_final+0x160/0x160 [ 29.105318] ? crypto_shash_final+0xdb/0x1f0 [ 29.109698] ? chacha20_dosimd+0x340/0x340 [ 29.113902] ? shash_finup_unaligned+0x47/0x60 [ 29.118453] ? crypto_hash_walk_done+0x124/0x410 [ 29.123176] ? shash_ahash_finup+0x1d9/0x270 [ 29.127573] poly_tail_continue+0x42a/0x6b0 [ 29.131863] ? poly_tail_continue+0x42a/0x6b0 [ 29.136322] ? crypto_ahash_op+0xc4/0x140 [ 29.140437] poly_tail+0x40f/0x520 [ 29.143944] poly_cipherpad+0x33e/0x470 [ 29.147886] poly_cipher+0x303/0x440 [ 29.151566] poly_adpad+0x347/0x480 [ 29.155159] poly_ad+0x25c/0x300 [ 29.158491] poly_setkey+0x2fc/0x3e0 [ 29.162170] poly_init+0x16c/0x1d0 [ 29.165675] poly_genkey+0x422/0x590 [ 29.169355] chachapoly_encrypt+0x418/0x620 [ 29.173644] aead_recvmsg+0x1295/0x1bc0 [ 29.177686] ? aead_release+0x50/0x50 [ 29.181457] ? selinux_socket_recvmsg+0x36/0x40 [ 29.186092] ? security_socket_recvmsg+0x91/0xc0 [ 29.190811] ? aead_release+0x50/0x50 [ 29.194579] sock_recvmsg+0xc9/0x110 [ 29.198259] ? __sock_recv_wifi_status+0x210/0x210 [ 29.203159] ___sys_recvmsg+0x29b/0x630 [ 29.207100] ? ___sys_sendmsg+0x8a0/0x8a0 [ 29.211226] ? up_read+0x1a/0x40 [ 29.214560] ? __do_page_fault+0x3d6/0xc90 [ 29.218761] ? fd_install+0x4d/0x60 [ 29.222364] ? __fdget+0x18/0x20 [ 29.225700] __sys_recvmsg+0xe2/0x210 [ 29.229471] ? __sys_recvmsg+0xe2/0x210 [ 29.233412] ? SyS_sendmmsg+0x60/0x60 [ 29.237180] ? __do_page_fault+0xc90/0xc90 [ 29.241403] ? SyS_setsockopt+0x215/0x360 [ 29.245521] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 29.250504] SyS_recvmsg+0x2d/0x50 [ 29.254013] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 29.258736] RIP: 0033:0x440079 [ 29.261891] RSP: 002b:00007ffe3c0a9968 EFLAGS: 00000217 ORIG_RAX: 000000000000002f [ 29.269735] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440079 [ 29.276977] RDX: 0000000000000002 RSI: 000000002022efc8 RDI: 0000000000000004 [ 29.284211] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 29.291456] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004019e0 [ 29.298690] R13: 0000000000401a70 R14: 0000000000000000 R15: 0000000000000000 [ 29.305934] 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 [ 29.325003] RIP: scatterwalk_copychunks+0x337/0x480 RSP: ffff8801c52272c0 [ 29.331955] ---[ end trace 5e7848422c4a1059 ]--- [ 29.336701] Kernel panic - not syncing: Fatal exception [ 29.342063] Dumping ftrace buffer: [ 29.345568] (ftrace buffer empty) [ 29.349250] Kernel Offset: disabled [ 29.352845] Rebooting in 86400 seconds..