[....] Starting enhanced syslogd: rsyslogd[ 11.912343] audit: type=1400 audit(1512850279.164:5): avc: denied { syslog } for pid=2992 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: [ 34.774117] audit: type=1400 audit(1512850302.025:6): 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-next-kasan-gce-7,10.128.0.30' (ECDSA) to the list of known hosts. executing program [ 54.294624] audit: type=1400 audit(1512850321.546:7): avc: denied { map } for pid=3150 comm="syzkaller168397" path="/root/syzkaller168397015" 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 [ 54.332295] kasan: CONFIG_KASAN_INLINE enabled [ 54.336934] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 54.344322] general protection fault: 0000 [#1] SMP KASAN [ 54.349829] Dumping ftrace buffer: [ 54.353331] (ftrace buffer empty) [ 54.357006] Modules linked in: [ 54.360166] CPU: 0 PID: 3150 Comm: syzkaller168397 Not tainted 4.15.0-rc2-next-20171208+ #63 [ 54.368701] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.378026] RIP: 0010:scatterwalk_copychunks+0x337/0x480 [ 54.383445] RSP: 0018:ffff8801c5e2f2c0 EFLAGS: 00010202 [ 54.388771] RAX: 0000000000000000 RBX: 0000000000000fe1 RCX: ffffffff82504fd9 [ 54.396012] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000008 [ 54.403247] RBP: ffff8801c5e2f320 R08: ffffed0038ab74c2 R09: ffffed0038ab74c2 [ 54.410485] R10: 0000000000000002 R11: ffffed0038ab74c1 R12: 0000000000000fe1 [ 54.417720] R13: ffff8801c5e2f630 R14: dffffc0000000000 R15: 0000000000000000 [ 54.424956] FS: 00000000018ea880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 54.433148] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.438993] CR2: 000000002072bf80 CR3: 00000001c5755000 CR4: 00000000001406f0 [ 54.446236] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 54.453476] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 54.460714] Call Trace: [ 54.463277] skcipher_walk_next+0x8db/0x1bd0 [ 54.467656] ? skcipher_walk_done+0xcb0/0xcb0 [ 54.472122] skcipher_walk_first+0x138/0x400 [ 54.476497] ? memzero_explicit+0xe/0x10 [ 54.480524] ? tgr160_final+0x8b/0xc0 [ 54.484291] skcipher_walk_skcipher+0x519/0x6e0 [ 54.488923] skcipher_walk_virt+0x58/0xd0 [ 54.493038] chacha20_simd+0x167/0x410 [ 54.496887] ? tgr128_final+0x160/0x160 [ 54.500823] ? crypto_shash_final+0xdb/0x1f0 [ 54.505204] ? chacha20_dosimd+0x340/0x340 [ 54.509403] ? shash_finup_unaligned+0x47/0x60 [ 54.513947] ? crypto_hash_walk_done+0x124/0x410 [ 54.518669] ? shash_ahash_finup+0x1d9/0x270 [ 54.523052] poly_tail_continue+0x42a/0x6b0 [ 54.527340] ? poly_tail_continue+0x42a/0x6b0 [ 54.531802] ? crypto_ahash_op+0xc4/0x140 [ 54.535919] poly_tail+0x40f/0x520 [ 54.539424] poly_cipherpad+0x33e/0x470 [ 54.543363] poly_cipher+0x303/0x440 [ 54.547042] poly_adpad+0x347/0x480 [ 54.550633] poly_ad+0x25c/0x300 [ 54.553963] poly_setkey+0x2fc/0x3e0 [ 54.557645] poly_init+0x16c/0x1d0 [ 54.561156] poly_genkey+0x422/0x590 [ 54.564838] chachapoly_encrypt+0x418/0x620 [ 54.569130] aead_recvmsg+0x1295/0x1bc0 [ 54.573772] ? aead_release+0x50/0x50 [ 54.577539] ? selinux_socket_recvmsg+0x36/0x40 [ 54.582174] ? security_socket_recvmsg+0x91/0xc0 [ 54.586894] ? aead_release+0x50/0x50 [ 54.590657] sock_recvmsg+0xc9/0x110 [ 54.594334] ? __sock_recv_wifi_status+0x210/0x210 [ 54.599226] ___sys_recvmsg+0x29b/0x630 [ 54.603169] ? ___sys_sendmsg+0x8a0/0x8a0 [ 54.607299] ? up_read+0x1a/0x40 [ 54.610634] ? __do_page_fault+0x3d6/0xc90 [ 54.614833] ? fd_install+0x4d/0x60 [ 54.618427] ? __fdget+0x18/0x20 [ 54.621760] __sys_recvmsg+0xe2/0x210 [ 54.625523] ? __sys_recvmsg+0xe2/0x210 [ 54.629460] ? SyS_sendmmsg+0x60/0x60 [ 54.633224] ? __do_page_fault+0xc90/0xc90 [ 54.637424] ? SyS_setsockopt+0x215/0x360 [ 54.641540] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 54.646522] SyS_recvmsg+0x2d/0x50 [ 54.650028] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 54.654747] RIP: 0033:0x440079 [ 54.657900] RSP: 002b:00007ffc0240a548 EFLAGS: 00000217 ORIG_RAX: 000000000000002f [ 54.665571] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440079 [ 54.672806] RDX: 0000000000000002 RSI: 000000002022efc8 RDI: 0000000000000004 [ 54.680049] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 54.687282] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004019e0 [ 54.694513] R13: 0000000000401a70 R14: 0000000000000000 R15: 0000000000000000 [ 54.701756] Code: 89 ff e8 dd 6e 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 [ 54.720819] RIP: scatterwalk_copychunks+0x337/0x480 RSP: ffff8801c5e2f2c0 [ 54.727781] ---[ end trace 7d5eed25eabf80b7 ]--- [ 54.732676] Kernel panic - not syncing: Fatal exception [ 54.738029] Dumping ftrace buffer: [ 54.741535] (ftrace buffer empty) [ 54.745213] Kernel Offset: disabled [ 54.748811] Rebooting in 86400 seconds..