[....] Starting enhanced syslogd: rsyslogd[ 11.223430] audit: type=1400 audit(1515341317.463:5): avc: denied { syslog } for pid=3317 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: [ 16.484175] audit: type=1400 audit(1515341322.723:6): avc: denied { map } for pid=3456 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 '10.128.0.14' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program [ 22.635163] audit: type=1400 audit(1515341328.874:7): avc: denied { map } for pid=3470 comm="syzkaller509170" path="/root/syzkaller509170875" 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 [ 22.661134] audit: type=1400 audit(1515341328.875:8): avc: denied { map } for pid=3470 comm="syzkaller509170" path="/dev/usbmon0" dev="devtmpfs" ino=1143 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 [ 22.702102] page:ffffea000708f2c0 count:0 mapcount:0 mapping: (null) index:0x0 [ 22.710301] flags: 0x2fffc0000000000() [ 22.714344] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 22.722227] raw: ffffea0007007f60 ffffea000708b6e0 0000000000000000 0000000000000000 [ 22.730118] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 22.737216] ------------[ cut here ]------------ [ 22.741942] kernel BUG at ./include/linux/mm.h:844! [ 22.746980] invalid opcode: 0000 [#1] SMP KASAN [ 22.751629] Dumping ftrace buffer: [ 22.755137] (ftrace buffer empty) [ 22.758818] Modules linked in: [ 22.761981] CPU: 1 PID: 3471 Comm: syzkaller509170 Not tainted 4.15.0-rc6-mm1+ #51 [ 22.769665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.778999] RIP: 0010:mon_bin_vma_fault+0x1df/0x250 [ 22.783979] RSP: 0018:ffff8801c0607968 EFLAGS: 00010293 [ 22.789308] RAX: ffff8801c0220040 RBX: ffffea000708f2c0 RCX: ffffffff817ede5c [ 22.796545] RDX: 0000000000000000 RSI: ffff8801db51f6d8 RDI: ffffea000708f2f8 [ 22.803781] RBP: ffff8801c0607988 R08: 0000000000000000 R09: 0000000000000000 [ 22.811022] R10: ffff8801c0607aa0 R11: 0000000000000000 R12: ffff8801c0607a50 [ 22.818270] R13: ffffea000708f2c0 R14: ffffea0007007f60 R15: 1ffff100380c0f3e [ 22.825507] FS: 00007f2412968700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 22.833700] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.839548] CR2: 00000000208be000 CR3: 00000001c0b08005 CR4: 00000000001606e0 [ 22.846786] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.854023] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.861260] Call Trace: [ 22.863821] __do_fault+0x8a/0x1d0 [ 22.867358] __handle_mm_fault+0x1c96/0x3210 [ 22.871734] ? __pmd_alloc+0x4e0/0x4e0 [ 22.875590] ? find_held_lock+0x35/0x1e0 [ 22.879621] handle_mm_fault+0x305/0x840 [ 22.883655] __get_user_pages+0x37e/0x1140 [ 22.887860] ? follow_page_mask+0x1430/0x1430 [ 22.892320] ? memset+0x31/0x40 [ 22.895568] populate_vma_page_range+0x18e/0x230 [ 22.900289] __mm_populate+0x204/0x350 [ 22.904144] ? populate_vma_page_range+0x230/0x230 [ 22.909039] vm_mmap_pgoff+0x1e1/0x1f0 [ 22.912900] ? vma_is_stack_for_current+0xa0/0xa0 [ 22.917711] ? __fget+0x22b/0x390 [ 22.921135] SyS_mmap_pgoff+0x423/0x580 [ 22.925075] ? find_mergeable_anon_vma+0x2a0/0x2a0 [ 22.929971] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 22.934964] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 22.939687] SyS_mmap+0x16/0x20 [ 22.942932] entry_SYSCALL_64_fastpath+0x23/0x9a [ 22.947654] RIP: 0033:0x449229 [ 22.950808] RSP: 002b:00007f2412967d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 22.958481] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449229 [ 22.965717] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 22.972955] RBP: 0000000000000000 R08: 000000000000000d R09: 0000000000000000 [ 22.980197] R10: 0000000000008011 R11: 0000000000000212 R12: 00000000006dac20 [ 22.987431] R13: 6273752f7665642f R14: 00007f24129689c0 R15: 0000000000000005 [ 22.994671] Code: 5d c3 bb 02 00 00 00 e8 e0 ab e2 fd 89 d8 5b 41 5c 41 5d 41 5e 5d c3 e8 d0 ab e2 fd 48 c7 c6 c0 09 73 85 48 89 df e8 01 7f 03 fe <0f> 0b e8 ba ab e2 fd 49 8d 5e ff e9 51 ff ff ff e8 2c a0 0e fe [ 23.013724] RIP: mon_bin_vma_fault+0x1df/0x250 RSP: ffff8801c0607968 [ 23.020370] ---[ end trace 19d5c23533dd68e5 ]--- [ 23.025249] Kernel panic - not syncing: Fatal exception [ 23.030980] Dumping ftrace buffer: [ 23.034491] (ftrace buffer empty) [ 23.038167] Kernel Offset: disabled [ 23.041759] Rebooting in 86400 seconds..