[....] Starting enhanced syslogd: rsyslogd[ 10.827679] audit: type=1400 audit(1515285345.850:5): avc: denied { syslog } for pid=3308 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: [ 16.884589] audit: type=1400 audit(1515285351.907:6): avc: denied { map } for pid=3449 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 '10.128.0.11' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program [ 23.025650] audit: type=1400 audit(1515285358.048:7): avc: denied { map } for pid=3463 comm="syzkaller083742" path="/root/syzkaller083742344" 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 executing program [ 23.051718] audit: type=1400 audit(1515285358.048:8): avc: denied { map } for pid=3463 comm="syzkaller083742" path="/dev/usbmon0" dev="devtmpfs" ino=8989 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file permissive=1 [ 23.083463] page:ffffea000702ac00 count:0 mapcount:0 mapping: (null) index:0x0 [ 23.091683] flags: 0x2fffc0000000000() [ 23.095660] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 23.103545] raw: ffffea0007014aa0 ffffea0007013c60 0000000000000000 0000000000000000 [ 23.111427] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 23.118524] ------------[ cut here ]------------ [ 23.123245] kernel BUG at ./include/linux/mm.h:844! [ 23.128257] invalid opcode: 0000 [#1] SMP KASAN [ 23.132892] Dumping ftrace buffer: [ 23.136401] (ftrace buffer empty) [ 23.140075] Modules linked in: [ 23.143239] CPU: 1 PID: 3464 Comm: syzkaller083742 Not tainted 4.15.0-rc6-next-20180105+ #89 [ 23.151777] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.161107] RIP: 0010:mon_bin_vma_fault+0x1df/0x250 [ 23.166085] RSP: 0018:ffff8801c0ac7968 EFLAGS: 00010293 [ 23.171413] RAX: ffff8801c05ba380 RBX: ffffea000702ac00 RCX: ffffffff817eddbc [ 23.178649] RDX: 0000000000000000 RSI: ffff8801c05babf8 RDI: ffffea000702ac38 [ 23.185887] RBP: ffff8801c0ac7988 R08: 0000000000000000 R09: 0000000000000000 [ 23.193121] R10: ffff8801c0ac7aa0 R11: 0000000000000000 R12: ffff8801c0ac7a50 [ 23.200704] R13: ffffea000702ac00 R14: ffffea0007014aa0 R15: 1ffff10038158f3e [ 23.207945] FS: 00007f38a2ae4700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 23.216139] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.221983] CR2: 00000000208be000 CR3: 00000001c0b7f002 CR4: 00000000001606e0 [ 23.229224] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.236457] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.243689] Call Trace: [ 23.246249] __do_fault+0x8a/0x1d0 [ 23.249764] __handle_mm_fault+0x1c96/0x3210 [ 23.254137] ? __pmd_alloc+0x4e0/0x4e0 [ 23.257991] ? find_held_lock+0x35/0x1e0 [ 23.262026] handle_mm_fault+0x305/0x840 [ 23.266050] __get_user_pages+0x37e/0x1140 [ 23.270250] ? follow_page_mask+0x1430/0x1430 [ 23.274712] ? memset+0x31/0x40 [ 23.277963] populate_vma_page_range+0x18e/0x230 [ 23.282689] __mm_populate+0x204/0x350 [ 23.286544] ? populate_vma_page_range+0x230/0x230 [ 23.291439] vm_mmap_pgoff+0x1e1/0x1f0 [ 23.295291] ? vma_is_stack_for_current+0xa0/0xa0 [ 23.300100] ? __fget+0x22b/0x390 [ 23.303522] SyS_mmap_pgoff+0x423/0x580 [ 23.307464] ? find_mergeable_anon_vma+0x2a0/0x2a0 [ 23.312357] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.317346] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 23.322069] SyS_mmap+0x16/0x20 [ 23.325314] entry_SYSCALL_64_fastpath+0x23/0x9a [ 23.330031] RIP: 0033:0x449269 [ 23.333184] RSP: 002b:00007f38a2ae3d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 23.340855] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449269 [ 23.348090] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 23.355326] RBP: 00000000006dac20 R08: 0000000000000010 R09: 0000000000000000 [ 23.362561] R10: 0000000000008011 R11: 0000000000000212 R12: 0030656c69662f2e [ 23.369793] R13: 6273752f7665642f R14: 00303636396f7369 R15: 0000000000000005 [ 23.377034] Code: 5d c3 bb 02 00 00 00 e8 b0 ad e2 fd 89 d8 5b 41 5c 41 5d 41 5e 5d c3 e8 a0 ad e2 fd 48 c7 c6 00 0a 73 85 48 89 df e8 d1 80 03 fe <0f> 0b e8 8a ad e2 fd 49 8d 5e ff e9 51 ff ff ff e8 3c a1 0e fe [ 23.396086] RIP: mon_bin_vma_fault+0x1df/0x250 RSP: ffff8801c0ac7968 [ 23.402585] ---[ end trace acbc73bd52807395 ]--- [ 23.407319] Kernel panic - not syncing: Fatal exception [ 23.412977] Dumping ftrace buffer: [ 23.416482] (ftrace buffer empty) [ 23.420154] Kernel Offset: disabled [ 23.423746] Rebooting in 86400 seconds..