[   12.399132] audit: type=1400 audit(1513347146.648:5): avc:  denied  { syslog } for  pid=2988 comm="rsyslogd" capability=34  scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1
[....] Starting enhanced syslogd: rsyslogd[?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: [   18.530734] audit: type=1400 audit(1513347152.780:6): avc:  denied  { map } for  pid=3132 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-mmots-kasan-gce-6,10.128.0.48' (ECDSA) to the list of known hosts.
executing program
[   24.821251] audit: type=1400 audit(1513347159.071:7): avc:  denied  { map } for  pid=3146 comm="syzkaller646572" path="/root/syzkaller646572277" 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
[   24.849247] kasan: CONFIG_KASAN_INLINE enabled
[   24.853915] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   24.861281] general protection fault: 0000 [#1] SMP KASAN
[   24.866793] Dumping ftrace buffer:
[   24.870296]    (ftrace buffer empty)
[   24.873970] Modules linked in:
[   24.877128] CPU: 0 PID: 3146 Comm: syzkaller646572 Not tainted 4.15.0-rc2-mm1+ #39
[   24.884796] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   24.894121] RIP: 0010:page_mapping+0xa4/0x530
[   24.898578] RSP: 0018:ffff8801c4957320 EFLAGS: 00010202
[   24.903904] RAX: 0000000000000004 RBX: 1ffff1003892ae65 RCX: ffffffff81950c5d
[   24.911139] RDX: 0000000000000000 RSI: 1ffff1003892af03 RDI: 0000000000000000
[   24.918372] RBP: ffff8801c4957470 R08: ffffed003895c0dc R09: ffff8801c4ae06c0
[   24.925606] R10: ffff8801c5377a48 R11: ffffed003895c0db R12: 0000000000000000
[   24.932839] R13: ffff8801c4957448 R14: dffffc0000000000 R15: 0000000000000020
[   24.940073] FS:  0000000000b16880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
[   24.948260] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.954105] CR2: 0000000020c07000 CR3: 00000001c52b9000 CR4: 00000000001406f0
[   24.961343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.968582] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.975817] Call Trace:
[   24.978372]  ? kstrndup+0xd0/0xd0
[   24.981797]  ? lock_downgrade+0x980/0x980
[   24.985913]  ? trace_hardirqs_off+0xd/0x10
[   24.990112]  ? _raw_spin_unlock_irqrestore+0xa6/0xba
[   24.995184]  set_page_dirty+0xb9/0x5d0
[   24.999039]  ? __writepage+0xc0/0xc0
[   25.002718]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   25.007702]  ? trace_hardirqs_on+0xd/0x10
[   25.011816]  ? __rds_conn_create+0x376/0x17f0
[   25.016284]  ? rds_conn_message_info_send+0x30/0x30
[   25.021265]  rds_atomic_free_op+0xc2/0x330
[   25.025465]  ? rds_rdma_free_op+0x500/0x500
[   25.029749]  ? refcount_sub_and_test+0x115/0x1b0
[   25.034468]  ? refcount_inc+0x50/0x50
[   25.038241]  rds_message_put+0x53c/0x6b0
[   25.042266]  ? kfree+0x1e7/0x250
[   25.045601]  ? rds_message_add_rdma_dest_extension+0x170/0x170
[   25.051540]  ? rds_cmsg_rdma_map+0xb0/0xb0
[   25.055738]  ? trace_hardirqs_on+0xd/0x10
[   25.059852]  ? _raw_spin_unlock_bh+0x30/0x40
[   25.064227]  ? __release_sock+0x360/0x360
[   25.068338]  ? lock_sock_nested+0x91/0x110
[   25.072541]  ? rds_conn_create_outgoing+0x3f/0x50
[   25.077354]  rds_sendmsg+0x14ee/0x1f90
[   25.081213]  ? rds_send_drop_to+0x19d0/0x19d0
[   25.085679]  ? sock_has_perm+0x29c/0x400
[   25.089706]  ? selinux_secmark_relabel_packet+0xc0/0xc0
[   25.095040]  ? lock_release+0xda0/0xda0
[   25.098995]  ? selinux_socket_sendmsg+0x36/0x40
[   25.103646]  ? security_socket_sendmsg+0x89/0xb0
[   25.108374]  ? rds_send_drop_to+0x19d0/0x19d0
[   25.112837]  sock_sendmsg+0xca/0x110
[   25.116517]  ___sys_sendmsg+0x75b/0x8a0
[   25.120466]  ? copy_msghdr_from_user+0x590/0x590
[   25.125191]  ? lock_downgrade+0x980/0x980
[   25.129322]  ? __fget_light+0x29d/0x390
[   25.133265]  ? fget_raw+0x20/0x20
[   25.136685]  ? __handle_mm_fault+0x3dd0/0x3dd0
[   25.141232]  ? vmacache_find+0x5f/0x280
[   25.145176]  ? up_read+0x1a/0x40
[   25.148510]  ? __do_page_fault+0x3d6/0xc90
[   25.152713]  ? __fdget+0x18/0x20
[   25.156048]  __sys_sendmsg+0xe5/0x210
[   25.159810]  ? __sys_sendmsg+0xe5/0x210
[   25.163749]  ? SyS_shutdown+0x290/0x290
[   25.167688]  ? __do_page_fault+0xc90/0xc90
[   25.171894]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   25.176875]  SyS_sendmsg+0x2d/0x50
[   25.180380]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   25.185099] RIP: 0033:0x440079
[   25.188252] RSP: 002b:00007fff51695d48 EFLAGS: 00000217 ORIG_RAX: 000000000000002e
[   25.195922] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440079
[   25.203155] RDX: 0000000000000040 RSI: 000000002048cfe4 RDI: 0000000000000003
[   25.210388] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
[   25.217624] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004019e0
[   25.224857] R13: 0000000000401a70 R14: 0000000000000000 R15: 0000000000000000
[   25.232100] Code: f2 f2 f2 c7 40 14 00 f2 f2 f2 c7 40 18 f2 f2 f2 f2 c7 40 1c 00 f2 f2 f2 c7 40 20 f3 f3 f3 f3 e8 43 29 db ff 4c 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 41 04 00 00 4d 8d b5 00 ff ff ff 48 ba 00 
[   25.251169] RIP: page_mapping+0xa4/0x530 RSP: ffff8801c4957320
[   25.257141] ---[ end trace e02b5a430924ae05 ]---
[   25.261914] Kernel panic - not syncing: Fatal exception
[   25.267736] Dumping ftrace buffer:
[   25.271243]    (ftrace buffer empty)
[   25.274921] Kernel Offset: disabled
[   25.278513] Rebooting in 86400 seconds..