[....] Starting enhanced syslogd: rsyslogd[ 11.643133] audit: type=1400 audit(1515350183.126:5): avc: denied { syslog } for pid=3311 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: [ 17.621612] audit: type=1400 audit(1515350189.105:6): 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 '10.128.15.231' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program [ 23.778604] audit: type=1400 audit(1515350195.262:7): avc: denied { map } for pid=3466 comm="syzkaller521209" path="/root/syzkaller521209018" 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 [ 23.804540] audit: type=1400 audit(1515350195.262:8): avc: denied { map } for pid=3466 comm="syzkaller521209" path="/dev/usbmon0" dev="devtmpfs" ino=1079 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 [ 23.834572] page:ffffea0007026880 count:0 mapcount:0 mapping: (null) index:0x0 [ 23.842795] flags: 0x2fffc0000000000() [ 23.846797] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 23.854704] raw: ffffea000703f260 ffffea00070268e0 0000000000000000 0000000000000000 [ 23.862600] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 23.869713] ------------[ cut here ]------------ [ 23.874439] kernel BUG at ./include/linux/mm.h:844! [ 23.879476] invalid opcode: 0000 [#1] SMP KASAN [ 23.884127] Dumping ftrace buffer: [ 23.887642] (ftrace buffer empty) [ 23.891318] Modules linked in: [ 23.894479] CPU: 0 PID: 3467 Comm: syzkaller521209 Not tainted 4.15.0-rc6-next-20180105+ #89 [ 23.903018] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.912353] RIP: 0010:mon_bin_vma_fault+0x1df/0x250 [ 23.917331] RSP: 0018:ffff8801c0baf968 EFLAGS: 00010293 [ 23.922663] RAX: ffff8801c0d58580 RBX: ffffea0007026880 RCX: ffffffff817eddbc [ 23.929899] RDX: 0000000000000000 RSI: ffff8801c0d58df8 RDI: ffffea00070268b8 [ 23.937145] RBP: ffff8801c0baf988 R08: 0000000000000000 R09: 0000000000000000 [ 23.944381] R10: ffff8801c0bafaa0 R11: 0000000000000000 R12: ffff8801c0bafa50 [ 23.951621] R13: ffffea0007026880 R14: ffffea000703f260 R15: 1ffff10038175f3e [ 23.958865] FS: 00007fd15e6d8700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 23.967062] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.972910] CR2: 00000000208be000 CR3: 00000001c23d4002 CR4: 00000000001606f0 [ 23.980148] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.987384] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.994627] Call Trace: [ 23.997197] __do_fault+0x8a/0x1d0 [ 24.000713] __handle_mm_fault+0x1c96/0x3210 [ 24.005095] ? __pmd_alloc+0x4e0/0x4e0 [ 24.008955] ? find_held_lock+0x35/0x1e0 [ 24.012991] handle_mm_fault+0x305/0x840 [ 24.017021] __get_user_pages+0x37e/0x1140 [ 24.021225] ? follow_page_mask+0x1430/0x1430 [ 24.025695] ? memset+0x31/0x40 [ 24.028942] populate_vma_page_range+0x18e/0x230 [ 24.033664] __mm_populate+0x204/0x350 [ 24.037530] ? populate_vma_page_range+0x230/0x230 [ 24.042435] vm_mmap_pgoff+0x1e1/0x1f0 [ 24.046294] ? vma_is_stack_for_current+0xa0/0xa0 [ 24.051112] ? __fget+0x22b/0x390 [ 24.054538] SyS_mmap_pgoff+0x423/0x580 [ 24.058480] ? find_mergeable_anon_vma+0x2a0/0x2a0 [ 24.063376] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.068366] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.073089] SyS_mmap+0x16/0x20 [ 24.076336] entry_SYSCALL_64_fastpath+0x23/0x9a [ 24.081055] RIP: 0033:0x449229 [ 24.084211] RSP: 002b:00007fd15e6d7d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 24.091895] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449229 [ 24.099132] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 24.106369] RBP: 0000000000000000 R08: 000000000000000c R09: 0000000000000000 [ 24.113606] R10: 0000000000008011 R11: 0000000000000212 R12: 00000000006dac20 [ 24.120849] R13: 6273752f7665642f R14: 00007fd15e6d89c0 R15: 0000000000000005 [ 24.128096] 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 [ 24.147154] RIP: mon_bin_vma_fault+0x1df/0x250 RSP: ffff8801c0baf968 [ 24.153674] ---[ end trace 8282eef0d05cb195 ]--- [ 24.158546] Kernel panic - not syncing: Fatal exception [ 24.164290] Dumping ftrace buffer: [ 24.167797] (ftrace buffer empty) [ 24.171474] Kernel Offset: disabled [ 24.175067] Rebooting in 86400 seconds..