[....] Starting enhanced syslogd: rsyslogd[ 11.378081] audit: type=1400 audit(1514774157.866:5): avc: denied { syslog } for pid=2999 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: [ 16.906701] audit: type=1400 audit(1514774163.395:6): avc: denied { map } for pid=3138 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 '10.128.15.200' (ECDSA) to the list of known hosts. executing program executing program [ 38.598617] audit: type=1400 audit(1514774185.087:7): avc: denied { map } for pid=3156 comm="syzkaller720640" path="/root/syzkaller720640431" 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 [ 38.625111] audit: type=1400 audit(1514774185.105:8): avc: denied { map } for pid=3156 comm="syzkaller720640" path="/dev/usbmon0" dev="devtmpfs" ino=8893 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 executing program [ 38.718308] page:000000006962ea9b count:0 mapcount:0 mapping: (null) index:0x0 [ 38.726572] flags: 0x2fffc0000000000() [ 38.730490] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 38.738524] raw: ffffea0007211d20 ffffea0007215260 0000000000000000 0000000000000000 [ 38.746426] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 38.753525] ------------[ cut here ]------------ [ 38.758254] kernel BUG at ./include/linux/mm.h:844! [ 38.763379] invalid opcode: 0000 [#1] SMP KASAN [ 38.768022] Dumping ftrace buffer: [ 38.771528] (ftrace buffer empty) [ 38.775205] Modules linked in: [ 38.778366] CPU: 1 PID: 3160 Comm: syzkaller720640 Not tainted 4.15.0-rc4-next-20171221+ #78 [ 38.786910] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.796250] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 38.801230] RSP: 0018:ffff8801c87ef510 EFLAGS: 00010203 [ 38.806561] RAX: 0000000000000000 RBX: 1ffff100390fdea4 RCX: 0000000000000000 [ 38.813797] RDX: 0000000000000000 RSI: 1ffff100390fddee RDI: ffffed00390fde90 [ 38.821034] RBP: ffff8801c87ef5e8 R08: 1ffff100390fddb0 R09: 0000000000000000 [ 38.828269] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff100390fdea8 [ 38.835506] R13: dffffc0000000000 R14: ffff8801c87ef840 R15: ffffea0007216980 [ 38.842746] FS: 00007ff4cb377700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 38.850948] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.856797] CR2: 00007ffd79a84e9c CR3: 00000001c967a005 CR4: 00000000001606e0 [ 38.864038] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.871277] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.878520] Call Trace: [ 38.881079] ? mon_alloc_buff+0x1a0/0x1a0 [ 38.885199] ? finish_fault+0x1b4/0x2a0 [ 38.889153] ? lock_downgrade+0x980/0x980 [ 38.893266] ? do_swap_page+0x2a10/0x2a10 [ 38.897392] __do_fault+0xeb/0x30f [ 38.900927] ? pte_offset_kernel+0xc7/0xc7 [ 38.905129] ? vma_compute_subtree_gap+0x200/0x200 [ 38.910033] ? check_noncircular+0x20/0x20 [ 38.914233] ? _raw_spin_unlock+0x22/0x30 [ 38.918347] __handle_mm_fault+0x1d8f/0x3ce0 [ 38.922733] ? __pmd_alloc+0x4e0/0x4e0 [ 38.926590] ? find_held_lock+0x35/0x1d0 [ 38.930623] ? handle_mm_fault+0x2a0/0x930 [ 38.934823] ? lock_downgrade+0x980/0x980 [ 38.938954] handle_mm_fault+0x38f/0x930 [ 38.942984] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 38.947619] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 38.953468] ? find_vma+0x30/0x150 [ 38.956979] __get_user_pages+0x50c/0x15f0 [ 38.961184] ? follow_page_mask+0x17f0/0x17f0 [ 38.965647] ? vma_link+0xe9/0x170 [ 38.969157] ? lock_acquire+0x1d5/0x580 [ 38.973095] ? lock_acquire+0x1d5/0x580 [ 38.977041] ? __mm_populate+0x2c7/0x450 [ 38.981071] ? lock_release+0xa40/0xa40 [ 38.985010] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 38.990872] ? rcu_note_context_switch+0x710/0x710 [ 38.995774] populate_vma_page_range+0x20e/0x2f0 [ 39.000507] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 39.005401] ? vmacache_find+0x5f/0x280 [ 39.009339] ? vmacache_update+0xfe/0x130 [ 39.013454] ? find_vma+0x30/0x150 [ 39.016959] __mm_populate+0x23a/0x450 [ 39.020820] ? populate_vma_page_range+0x2f0/0x2f0 [ 39.025722] ? down_read_killable+0x180/0x180 [ 39.030195] ? security_mmap_file+0x143/0x180 [ 39.034662] vm_mmap_pgoff+0x241/0x280 [ 39.038530] ? vma_is_stack_for_current+0xa0/0xa0 [ 39.043348] ? __fdget_pos+0x130/0x190 [ 39.047210] ? __fdget_raw+0x20/0x20 [ 39.050897] SyS_mmap_pgoff+0x462/0x5f0 [ 39.054841] ? find_mergeable_anon_vma+0xd0/0xd0 [ 39.059569] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 39.064551] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 39.069276] SyS_mmap+0x16/0x20 [ 39.072522] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 39.077242] RIP: 0033:0x449319 [ 39.080399] RSP: 002b:00007ff4cb376d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 39.088073] RAX: ffffffffffffffda RBX: 00000000006dac3c RCX: 0000000000449319 [ 39.095310] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 39.102556] RBP: 0000000000000000 R08: 000000000000000d R09: 0000000000000000 [ 39.109794] R10: 0000000000008011 R11: 0000000000000212 R12: 00000000006dac38 [ 39.117038] R13: 6273752f7665642f R14: 00007ff4cb3779c0 R15: 0000000000000007 [ 39.124287] Code: 00 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 41 bc 02 00 00 00 eb bb e8 eb f2 96 fd 48 c7 c6 20 1f d1 85 4c 89 ff e8 8c b4 c0 fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 c7 f2 96 fd [ 39.143357] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c87ef510 [ 39.149883] ---[ end trace 9e9395c061e01746 ]--- [ 39.154644] Kernel panic - not syncing: Fatal exception [ 39.160288] Dumping ftrace buffer: [ 39.163797] (ftrace buffer empty) [ 39.167478] Kernel Offset: disabled [ 39.171069] Rebooting in 86400 seconds..