[....] Starting enhanced syslogd: rsyslogd[ 12.475699] audit: type=1400 audit(1514835590.063:5): avc: denied { syslog } for pid=3339 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: [ 17.754888] audit: type=1400 audit(1514835595.342:6): avc: denied { map } for pid=3479 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 '10.128.0.46' (ECDSA) to the list of known hosts. executing program executing program executing program [ 24.144078] audit: type=1400 audit(1514835601.731:7): avc: denied { map } for pid=3493 comm="syzkaller523674" path="/root/syzkaller523674252" 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 [ 24.166958] syzkaller523674 uses obsolete (PF_INET,SOCK_PACKET) executing program [ 24.176227] audit: type=1400 audit(1514835601.732:8): avc: denied { map } for pid=3493 comm="syzkaller523674" path="/dev/usbmon0" dev="devtmpfs" ino=1153 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 [ 24.205276] page:00000000ae045b83 count:0 mapcount:0 mapping: (null) index:0x0 [ 24.213531] flags: 0x2fffc0000000000() [ 24.217449] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 24.225354] raw: ffffea0006ff15a0 ffffea0006ff42a0 0000000000000000 0000000000000000 [ 24.233257] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 24.240354] ------------[ cut here ]------------ [ 24.245080] kernel BUG at ./include/linux/mm.h:844! [ 24.250108] invalid opcode: 0000 [#1] SMP KASAN [ 24.254745] Dumping ftrace buffer: [ 24.258250] (ftrace buffer empty) [ 24.261929] Modules linked in: [ 24.265091] CPU: 1 PID: 3494 Comm: syzkaller523674 Not tainted 4.15.0-rc6+ #245 [ 24.272501] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.282565] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 24.287550] RSP: 0018:ffff8801bfdff510 EFLAGS: 00010203 [ 24.292880] RAX: 0000000000000000 RBX: 1ffff10037fbfea4 RCX: 0000000000000000 [ 24.300128] RDX: 0000000000000000 RSI: 1ffff10037fbfdee RDI: ffffed0037fbfe90 [ 24.307371] RBP: ffff8801bfdff5e8 R08: 1ffff10037fbfdb0 R09: 0000000000000000 [ 24.314621] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff10037fbfea8 [ 24.321876] R13: dffffc0000000000 R14: ffff8801bfdff840 R15: ffffea0006ff42c0 [ 24.329116] FS: 00007f08926e0700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 24.337310] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.343160] CR2: 000055e90040b088 CR3: 00000001bffbd002 CR4: 00000000001606e0 [ 24.350398] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.357635] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.364872] Call Trace: [ 24.367434] ? mon_alloc_buff+0x1a0/0x1a0 [ 24.371552] ? finish_fault+0x1b4/0x2a0 [ 24.375494] ? lock_downgrade+0x980/0x980 [ 24.379607] ? do_swap_page+0x2c50/0x2c50 [ 24.383723] __do_fault+0xeb/0x30f [ 24.387233] ? pte_offset_kernel+0xc7/0xc7 [ 24.391438] ? check_noncircular+0x20/0x20 [ 24.395639] ? _raw_spin_unlock+0x22/0x30 [ 24.399756] __handle_mm_fault+0x1d8f/0x3ce0 [ 24.404148] ? __pmd_alloc+0x4e0/0x4e0 [ 24.408004] ? __save_stack_trace+0x7e/0xd0 [ 24.412295] ? find_held_lock+0x35/0x1d0 [ 24.416324] ? handle_mm_fault+0x248/0x8d0 [ 24.420525] ? lock_downgrade+0x980/0x980 [ 24.424651] handle_mm_fault+0x334/0x8d0 [ 24.428678] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 24.433226] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.439076] ? find_vma+0x30/0x150 [ 24.442600] __get_user_pages+0x50c/0x15f0 [ 24.446809] ? follow_page_mask+0x17f0/0x17f0 [ 24.451273] ? lock_acquire+0x1d5/0x580 [ 24.455212] ? lock_acquire+0x1d5/0x580 [ 24.459151] ? __mm_populate+0x2c7/0x450 [ 24.463183] ? lock_release+0xa40/0xa40 [ 24.467123] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.472978] ? rcu_note_context_switch+0x710/0x710 [ 24.477877] populate_vma_page_range+0x20e/0x2f0 [ 24.482602] ? get_user_pages+0xc0/0xc0 [ 24.486544] ? vmacache_find+0x5f/0x280 [ 24.490486] ? vmacache_update+0xfe/0x130 [ 24.494604] ? find_vma+0x30/0x150 [ 24.498136] __mm_populate+0x23a/0x450 [ 24.501994] ? populate_vma_page_range+0x2f0/0x2f0 [ 24.506891] ? down_read_killable+0x180/0x180 [ 24.511365] ? security_mmap_file+0x143/0x180 [ 24.515836] vm_mmap_pgoff+0x241/0x280 [ 24.519694] ? vma_is_stack_for_current+0xa0/0xa0 [ 24.524506] ? do_page_fault+0xee/0x720 [ 24.528455] SyS_mmap_pgoff+0x462/0x5f0 [ 24.532397] ? find_mergeable_anon_vma+0xd0/0xd0 [ 24.537125] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.542127] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.546865] SyS_mmap+0x16/0x20 [ 24.550112] entry_SYSCALL_64_fastpath+0x23/0x9a [ 24.554839] RIP: 0033:0x44a039 [ 24.558008] RSP: 002b:00007f08926dfcd8 EFLAGS: 00000216 ORIG_RAX: 0000000000000009 [ 24.565683] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 000000000044a039 [ 24.572921] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 24.580167] RBP: 00000000006dbc20 R08: 0000000000000017 R09: 0000000000000000 [ 24.587413] R10: 0000000000008011 R11: 0000000000000216 R12: 0000000000000000 [ 24.594651] R13: 00007ffe3693035f R14: 00007f08926e09c0 R15: 0000000000000009 [ 24.601898] 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 2b b0 94 fd 48 c7 c6 20 b1 12 86 4c 89 ff e8 bc 98 bd fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 07 b0 94 fd [ 24.620973] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801bfdff510 [ 24.627630] ---[ end trace e8311ca4ac11f46d ]--- [ 24.632381] Kernel panic - not syncing: Fatal exception [ 24.638088] Dumping ftrace buffer: [ 24.641607] (ftrace buffer empty) [ 24.645296] Kernel Offset: disabled [ 24.648889] Rebooting in 86400 seconds..