[....] Starting enhanced syslogd: rsyslogd[ 11.811645] audit: type=1400 audit(1515372693.023:5): avc: denied { syslog } for pid=3345 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: [ 18.299226] audit: type=1400 audit(1515372699.511:6): avc: denied { map } for pid=3484 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 '10.128.0.57' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 24.453353] audit: type=1400 audit(1515372705.665:7): avc: denied { map } for pid=3498 comm="syzkaller580964" path="/root/syzkaller580964383" 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 executing program executing program executing program executing program executing program executing program executing program executing program [ 24.559289] audit: type=1400 audit(1515372705.771:8): avc: denied { map } for pid=3498 comm="syzkaller580964" path="/dev/usbmon0" dev="devtmpfs" ino=1085 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 [ 24.610338] page:ffffea0007024200 count:0 mapcount:0 mapping: (null) index:0x0 [ 24.618608] flags: 0x2fffc0000000000() [ 24.622545] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 24.630487] raw: ffffea000702dba0 ffffea00070253e0 0000000000000000 0000000000000000 [ 24.638398] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 24.645558] ------------[ cut here ]------------ [ 24.650287] kernel BUG at ./include/linux/mm.h:844! [ 24.655326] invalid opcode: 0000 [#1] SMP KASAN [ 24.659972] Dumping ftrace buffer: [ 24.663479] (ftrace buffer empty) [ 24.667158] Modules linked in: [ 24.670320] CPU: 0 PID: 3520 Comm: syzkaller580964 Not tainted 4.15.0-rc6-next-20180105+ #89 [ 24.678858] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.688186] RIP: 0010:mon_bin_vma_fault+0x1df/0x250 [ 24.693164] RSP: 0018:ffff8801c0547968 EFLAGS: 00010293 [ 24.698494] RAX: ffff8801c0084300 RBX: ffffea0007024200 RCX: ffffffff817eddbc [ 24.705745] RDX: 0000000000000000 RSI: ffff8801db41f6d8 RDI: ffffea0007024238 [ 24.712982] RBP: ffff8801c0547988 R08: 0000000000000000 R09: 0000000000000000 [ 24.721188] R10: ffff8801c0547aa0 R11: 0000000000000000 R12: ffff8801c0547a50 [ 24.728428] R13: ffffea0007024200 R14: ffffea000702dba0 R15: 1ffff100380a8f3e [ 24.735668] FS: 00007fb21f4af700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 24.743859] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.749707] CR2: 00000000208be000 CR3: 00000001c05b4003 CR4: 00000000001606f0 [ 24.756946] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.764184] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.771420] Call Trace: [ 24.773992] __do_fault+0x8a/0x1d0 [ 24.777504] __handle_mm_fault+0x1c96/0x3210 [ 24.781880] ? __pmd_alloc+0x4e0/0x4e0 [ 24.785734] ? find_held_lock+0x35/0x1e0 [ 24.789769] handle_mm_fault+0x305/0x840 [ 24.793797] __get_user_pages+0x37e/0x1140 [ 24.798003] ? follow_page_mask+0x1430/0x1430 [ 24.802472] ? memset+0x31/0x40 [ 24.805722] populate_vma_page_range+0x18e/0x230 [ 24.810444] __mm_populate+0x204/0x350 [ 24.814298] ? populate_vma_page_range+0x230/0x230 [ 24.819197] vm_mmap_pgoff+0x1e1/0x1f0 [ 24.823055] ? vma_is_stack_for_current+0xa0/0xa0 [ 24.827866] ? __fget+0x22b/0x390 [ 24.831287] SyS_mmap_pgoff+0x423/0x580 [ 24.835230] ? find_mergeable_anon_vma+0x2a0/0x2a0 [ 24.840127] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.845109] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.849832] SyS_mmap+0x16/0x20 [ 24.853080] entry_SYSCALL_64_fastpath+0x23/0x9a [ 24.857801] RIP: 0033:0x44a099 [ 24.860958] RSP: 002b:00007fb21f4aed98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 24.868633] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 000000000044a099 [ 24.875868] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 24.883105] RBP: 0000000000000000 R08: 0000000000000025 R09: 0000000000000000 [ 24.890342] R10: 0000000000008011 R11: 0000000000000212 R12: 00000000006dbc20 [ 24.897579] R13: 6273752f7665642f R14: 00007fb21f4af9c0 R15: 0000000000000005 [ 24.904821] 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 [ 24.923884] RIP: mon_bin_vma_fault+0x1df/0x250 RSP: ffff8801c0547968 [ 24.930566] ---[ end trace 82fb37c01518653f ]--- [ 24.935351] Kernel panic - not syncing: Fatal exception [ 24.941222] Dumping ftrace buffer: [ 24.944753] (ftrace buffer empty) [ 24.948431] Kernel Offset: disabled [ 24.952027] Rebooting in 86400 seconds..