[....] Starting enhanced syslogd: rsyslogd[ 11.206049] audit: type=1400 audit(1515270800.289:5): 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 16.729284] audit: type=1400 audit(1515270805.813:6): avc: denied { map } for pid=3446 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 '10.128.15.203' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 22.903250] audit: type=1400 audit(1515270811.987:7): avc: denied { map } for pid=3460 comm="syzkaller953580" path="/root/syzkaller953580209" 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 [ 22.929569] audit: type=1400 audit(1515270811.995:8): avc: denied { map } for pid=3460 comm="syzkaller953580" path="/dev/usbmon0" dev="devtmpfs" ino=8928 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 [ 22.959228] page:ffffea00070452c0 count:0 mapcount:0 mapping: (null) index:0x0 [ 22.967917] flags: 0x2fffc0000000000() [ 22.971861] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 22.979750] raw: ffffea000704ba20 ffffea00070454a0 0000000000000000 0000000000000000 [ 22.987634] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 22.994736] ------------[ cut here ]------------ [ 22.999471] kernel BUG at ./include/linux/mm.h:844! [ 23.004499] invalid opcode: 0000 [#1] SMP KASAN [ 23.009145] Dumping ftrace buffer: [ 23.012651] (ftrace buffer empty) [ 23.016325] Modules linked in: [ 23.019485] CPU: 1 PID: 3461 Comm: syzkaller953580 Not tainted 4.15.0-rc6-next-20180105+ #89 [ 23.028024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.037357] RIP: 0010:mon_bin_vma_fault+0x1df/0x250 [ 23.042338] RSP: 0018:ffff8801c1027968 EFLAGS: 00010293 [ 23.047667] RAX: ffff8801c178a380 RBX: ffffea00070452c0 RCX: ffffffff817eddbc [ 23.054901] RDX: 0000000000000000 RSI: ffff8801db51f6d8 RDI: ffffea00070452f8 [ 23.062135] RBP: ffff8801c1027988 R08: 0000000000000000 R09: 0000000000000000 [ 23.069369] R10: ffff8801c1027aa0 R11: 0000000000000000 R12: ffff8801c1027a50 [ 23.076602] R13: ffffea00070452c0 R14: dead000000000100 R15: 1ffff10038204f3e [ 23.083849] FS: 00007f0a4c320700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 23.092044] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.097891] CR2: 0000000020bc6ff4 CR3: 00000001c144c005 CR4: 00000000001606e0 [ 23.105127] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.112363] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.119602] Call Trace: [ 23.122172] __do_fault+0x8a/0x1d0 [ 23.125677] __handle_mm_fault+0x1c96/0x3210 [ 23.130054] ? __pmd_alloc+0x4e0/0x4e0 [ 23.133911] ? find_held_lock+0x35/0x1e0 [ 23.137945] handle_mm_fault+0x305/0x840 [ 23.141970] __get_user_pages+0x37e/0x1140 [ 23.146174] ? follow_page_mask+0x1430/0x1430 [ 23.150642] ? memset+0x31/0x40 [ 23.153891] populate_vma_page_range+0x18e/0x230 [ 23.158623] __mm_populate+0x204/0x350 [ 23.162477] ? populate_vma_page_range+0x230/0x230 [ 23.167375] vm_mmap_pgoff+0x1e1/0x1f0 [ 23.171229] ? vma_is_stack_for_current+0xa0/0xa0 [ 23.176049] ? __fget+0x22b/0x390 [ 23.179473] SyS_mmap_pgoff+0x423/0x580 [ 23.183413] ? find_mergeable_anon_vma+0x2a0/0x2a0 [ 23.188309] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.193292] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 23.198024] SyS_mmap+0x16/0x20 [ 23.201275] entry_SYSCALL_64_fastpath+0x23/0x9a [ 23.205993] RIP: 0033:0x449479 [ 23.209149] RSP: 002b:00007f0a4c31fcd8 EFLAGS: 00000216 ORIG_RAX: 0000000000000009 [ 23.216820] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449479 [ 23.224055] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 23.231290] RBP: 00000000006dac20 R08: 0000000000000023 R09: 0000000000000000 [ 23.238524] R10: 0000000000008011 R11: 0000000000000216 R12: 0000000000000000 [ 23.245935] R13: 00007ffc21e3c69f R14: 00007f0a4c3209c0 R15: 0000000000000007 [ 23.253176] 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 [ 23.272229] RIP: mon_bin_vma_fault+0x1df/0x250 RSP: ffff8801c1027968 [ 23.278924] ---[ end trace 24f5902f88c43d20 ]--- [ 23.283797] Kernel panic - not syncing: Fatal exception [ 23.289657] Dumping ftrace buffer: [ 23.293168] (ftrace buffer empty) [ 23.296846] Kernel Offset: disabled [ 23.300440] Rebooting in 86400 seconds..