[....] Starting enhanced syslogd: rsyslogd[ 12.753777] audit: type=1400 audit(1512795622.014:5): 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: [ 21.257844] audit: type=1400 audit(1512795630.518:6): avc: denied { map } for pid=3131 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-7,10.128.0.62' (ECDSA) to the list of known hosts. executing program [ 27.538772] audit: type=1400 audit(1512795636.799:7): avc: denied { map } for pid=3145 comm="syzkaller499931" path="/root/syzkaller499931478" 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 [ 27.577259] kasan: CONFIG_KASAN_INLINE enabled [ 27.581901] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.589563] general protection fault: 0000 [#1] SMP KASAN [ 27.595082] Dumping ftrace buffer: [ 27.598588] (ftrace buffer empty) [ 27.602265] Modules linked in: [ 27.605427] CPU: 1 PID: 3145 Comm: syzkaller499931 Not tainted 4.15.0-rc2+ #213 [ 27.612838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.622168] RIP: 0010:scatterwalk_copychunks+0x337/0x480 [ 27.627581] RSP: 0018:ffff8801c521f2c0 EFLAGS: 00010202 [ 27.632908] RAX: 0000000000000000 RBX: 0000000000000fe1 RCX: ffffffff825024b9 [ 27.640146] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000008 [ 27.647385] RBP: ffff8801c521f320 R08: ffffed0038af9ef2 R09: ffffed0038af9ef2 [ 27.654624] R10: 0000000000000002 R11: ffffed0038af9ef1 R12: 0000000000000fe1 [ 27.661860] R13: ffff8801c521f630 R14: dffffc0000000000 R15: 0000000000000000 [ 27.669098] FS: 0000000000a94880(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 27.677288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.683136] CR2: 000000002072bf80 CR3: 00000001c564a000 CR4: 00000000001406e0 [ 27.690373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.697616] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.704852] Call Trace: [ 27.707414] skcipher_walk_next+0x8db/0x1bd0 [ 27.711796] ? skcipher_walk_done+0xcb0/0xcb0 [ 27.716266] skcipher_walk_first+0x138/0x400 [ 27.720643] ? memzero_explicit+0xe/0x10 [ 27.724671] ? tgr160_final+0x8b/0xc0 [ 27.728439] skcipher_walk_skcipher+0x519/0x6e0 [ 27.733075] skcipher_walk_virt+0x58/0xd0 [ 27.737189] chacha20_simd+0x167/0x410 [ 27.741043] ? tgr128_final+0x160/0x160 [ 27.744983] ? crypto_shash_final+0xdb/0x1f0 [ 27.749358] ? chacha20_dosimd+0x340/0x340 [ 27.753562] ? shash_finup_unaligned+0x47/0x60 [ 27.758111] ? crypto_hash_walk_done+0x124/0x410 [ 27.762835] ? shash_ahash_finup+0x1d9/0x270 [ 27.767222] poly_tail_continue+0x42a/0x6b0 [ 27.771510] ? poly_tail_continue+0x42a/0x6b0 [ 27.775972] ? crypto_ahash_op+0xc4/0x140 [ 27.780090] poly_tail+0x40f/0x520 [ 27.783610] poly_cipherpad+0x33e/0x470 [ 27.787561] poly_cipher+0x303/0x440 [ 27.791243] poly_adpad+0x347/0x480 [ 27.794837] poly_ad+0x25c/0x300 [ 27.798170] poly_setkey+0x2fc/0x3e0 [ 27.801853] poly_init+0x16c/0x1d0 [ 27.805361] poly_genkey+0x422/0x590 [ 27.809042] chachapoly_encrypt+0x418/0x620 [ 27.813333] aead_recvmsg+0x1295/0x1bc0 [ 27.817282] ? aead_release+0x50/0x50 [ 27.821054] ? selinux_socket_recvmsg+0x36/0x40 [ 27.825690] ? security_socket_recvmsg+0x91/0xc0 [ 27.830413] ? aead_release+0x50/0x50 [ 27.834179] sock_recvmsg+0xc9/0x110 [ 27.837860] ? __sock_recv_wifi_status+0x210/0x210 [ 27.842759] ___sys_recvmsg+0x29b/0x630 [ 27.846707] ? ___sys_sendmsg+0x8a0/0x8a0 [ 27.850837] ? up_read+0x1a/0x40 [ 27.854172] ? __do_page_fault+0x3d6/0xc90 [ 27.858374] ? fd_install+0x4d/0x60 [ 27.861974] ? __fdget+0x18/0x20 [ 27.865310] __sys_recvmsg+0xe2/0x210 [ 27.869081] ? __sys_recvmsg+0xe2/0x210 [ 27.873030] ? SyS_sendmmsg+0x60/0x60 [ 27.876804] ? __do_page_fault+0xc90/0xc90 [ 27.881008] ? SyS_setsockopt+0x215/0x360 [ 27.885137] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.890120] SyS_recvmsg+0x2d/0x50 [ 27.893627] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 27.898346] RIP: 0033:0x440079 [ 27.901502] RSP: 002b:00007ffcf79a1538 EFLAGS: 00000217 ORIG_RAX: 000000000000002f [ 27.909174] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440079 [ 27.916409] RDX: 0000000000000002 RSI: 000000002022efc8 RDI: 0000000000000004 [ 27.923645] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 27.930882] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004019e0 [ 27.938120] R13: 0000000000401a70 R14: 0000000000000000 R15: 0000000000000000 [ 27.945365] 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 [ 27.964429] RIP: scatterwalk_copychunks+0x337/0x480 RSP: ffff8801c521f2c0 [ 27.971364] ---[ end trace e66c8676b147f841 ]--- [ 27.976262] Kernel panic - not syncing: Fatal exception [ 27.982015] Dumping ftrace buffer: [ 27.985522] (ftrace buffer empty) [ 27.989196] Kernel Offset: disabled [ 27.992791] Rebooting in 86400 seconds..