[....] Starting enhanced syslogd: rsyslogd[ 11.085783] audit: type=1400 audit(1515341108.895:5): avc: denied { syslog } for pid=3315 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: [ 14.051052] audit: type=1400 audit(1515341111.860:6): avc: denied { map } for pid=3452 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 '10.128.15.237' (ECDSA) to the list of known hosts. executing program executing program executing program executing program [ 20.165822] audit: type=1400 audit(1515341117.975:7): avc: denied { map } for pid=3466 comm="syzkaller897478" path="/root/syzkaller897478766" 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 [ 20.191856] audit: type=1400 audit(1515341117.975:8): avc: denied { map } for pid=3466 comm="syzkaller897478" path="/dev/usbmon0" dev="devtmpfs" ino=1076 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 [ 20.222830] page:ffffea0006fa2b80 count:0 mapcount:0 mapping: (null) index:0x0 [ 20.231048] flags: 0x2fffc0000000000() [ 20.234939] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 20.242816] raw: ffffea0006fb8e60 ffffea0006fa2be0 0000000000000000 0000000000000000 [ 20.250696] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 20.257785] ------------[ cut here ]------------ [ 20.262509] kernel BUG at ./include/linux/mm.h:844! [ 20.268742] invalid opcode: 0000 [#1] SMP KASAN [ 20.275034] Dumping ftrace buffer: [ 20.278798] (ftrace buffer empty) [ 20.282473] Modules linked in: [ 20.285632] CPU: 0 PID: 3467 Comm: syzkaller897478 Not tainted 4.15.0-rc6-next-20180105+ #89 [ 20.294169] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.303500] RIP: 0010:mon_bin_vma_fault+0x1df/0x250 [ 20.308488] RSP: 0018:ffff8801be86f968 EFLAGS: 00010293 [ 20.313814] RAX: ffff8801bee96000 RBX: ffffea0006fa2b80 RCX: ffffffff817eddbc [ 20.321047] RDX: 0000000000000000 RSI: ffff8801db41f6d8 RDI: ffffea0006fa2bb8 [ 20.328289] RBP: ffff8801be86f988 R08: 0000000000000000 R09: 0000000000000000 [ 20.335528] R10: ffff8801be86faa0 R11: 0000000000000000 R12: ffff8801be86fa50 [ 20.342764] R13: ffffea0006fa2b80 R14: ffffea0006fb8e60 R15: 1ffff10037d0df3e [ 20.350000] FS: 00007f17fc37e700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 20.358194] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.364039] CR2: 00000000208be000 CR3: 00000001c009a001 CR4: 00000000001606f0 [ 20.371277] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.378511] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.387307] Call Trace: [ 20.389865] __do_fault+0x8a/0x1d0 [ 20.393372] __handle_mm_fault+0x1c96/0x3210 [ 20.397745] ? __pmd_alloc+0x4e0/0x4e0 [ 20.401598] ? find_held_lock+0x35/0x1e0 [ 20.405631] handle_mm_fault+0x305/0x840 [ 20.409659] __get_user_pages+0x37e/0x1140 [ 20.413862] ? follow_page_mask+0x1430/0x1430 [ 20.418321] ? memset+0x31/0x40 [ 20.421570] populate_vma_page_range+0x18e/0x230 [ 20.426293] __mm_populate+0x204/0x350 [ 20.430150] ? populate_vma_page_range+0x230/0x230 [ 20.435046] vm_mmap_pgoff+0x1e1/0x1f0 [ 20.438900] ? vma_is_stack_for_current+0xa0/0xa0 [ 20.443711] ? __fget+0x22b/0x390 [ 20.447137] SyS_mmap_pgoff+0x423/0x580 [ 20.451081] ? find_mergeable_anon_vma+0x2a0/0x2a0 [ 20.455976] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 20.460962] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 20.465684] SyS_mmap+0x16/0x20 [ 20.468929] entry_SYSCALL_64_fastpath+0x23/0x9a [ 20.473648] RIP: 0033:0x449229 [ 20.476804] RSP: 002b:00007f17fc37dd98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 20.484481] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449229 [ 20.491715] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 20.498950] RBP: 0000000000000000 R08: 000000000000000a R09: 0000000000000000 [ 20.506185] R10: 0000000000008011 R11: 0000000000000212 R12: 00000000006dac20 [ 20.513420] R13: 6273752f7665642f R14: 00007f17fc37e9c0 R15: 0000000000000005 [ 20.520662] 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 [ 20.540411] RIP: mon_bin_vma_fault+0x1df/0x250 RSP: ffff8801be86f968 [ 20.546931] ---[ end trace 1ae8e1e0dacb86f0 ]--- [ 20.551799] Kernel panic - not syncing: Fatal exception [ 20.557776] Dumping ftrace buffer: [ 20.561285] (ftrace buffer empty) [ 20.564961] Kernel Offset: disabled [ 20.568559] Rebooting in 86400 seconds..