[?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. [ 12.294095] audit: type=1400 audit(1514804975.787:6): avc: denied { map } for pid=3133 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 41.215312] audit: type=1400 audit(1514805004.708:7): avc: denied { map } for pid=3152 comm="syzkaller996945" path="/root/syzkaller996945589" 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 [ 41.241920] audit: type=1400 audit(1514805004.715:8): avc: denied { map } for pid=3152 comm="syzkaller996945" path="/dev/usbmon0" dev="devtmpfs" ino=205 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 [ 41.273747] page:000000006d26d9a5 count:0 mapcount:0 mapping: (null) index:0x0 [ 41.281972] flags: 0x2fffc0000000000() [ 41.285968] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 41.293864] raw: ffffea00072bff20 ffffea00072b9360 0000000000000000 0000000000000000 [ 41.301734] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 41.308831] ------------[ cut here ]------------ [ 41.313550] kernel BUG at ./include/linux/mm.h:844! [ 41.318574] invalid opcode: 0000 [#1] SMP KASAN [ 41.323213] Dumping ftrace buffer: [ 41.326717] (ftrace buffer empty) [ 41.330390] Modules linked in: [ 41.333551] CPU: 1 PID: 3153 Comm: syzkaller996945 Not tainted 4.15.0-rc4-next-20171221+ #78 [ 41.342089] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.351419] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 41.356397] RSP: 0018:ffff8801c8617510 EFLAGS: 00010203 [ 41.361742] RAX: 0000000000000000 RBX: 1ffff100390c2ea4 RCX: 0000000000000000 [ 41.368976] RDX: 0000000000000000 RSI: 1ffff100390c2dee RDI: ffffed00390c2e90 [ 41.376211] RBP: ffff8801c86175e8 R08: 1ffff100390c2db0 R09: 0000000000000000 [ 41.383444] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff100390c2ea8 [ 41.390682] R13: dffffc0000000000 R14: ffff8801c8617840 R15: ffffea000729f0c0 [ 41.397925] FS: 00007f23fe568700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 41.406118] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.411964] CR2: 00000000208be000 CR3: 00000001cae99006 CR4: 00000000001606e0 [ 41.419200] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.426433] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.433666] Call Trace: [ 41.436226] ? mon_alloc_buff+0x1a0/0x1a0 [ 41.440344] ? find_held_lock+0x35/0x1d0 [ 41.444381] __do_fault+0xeb/0x30f [ 41.447887] ? vma_gap_callbacks_rotate+0x62/0x80 [ 41.452693] ? pte_offset_kernel+0xc7/0xc7 [ 41.456893] ? print_irqtrace_events+0x270/0x270 [ 41.461616] ? rb_insert_color_cached+0x1660/0x1660 [ 41.466596] ? vma_compute_subtree_gap+0x200/0x200 [ 41.471493] ? rb_insert_color_cached+0x1660/0x1660 [ 41.476473] ? check_noncircular+0x20/0x20 [ 41.480674] __handle_mm_fault+0x1d8f/0x3ce0 [ 41.485051] ? __pmd_alloc+0x4e0/0x4e0 [ 41.488906] ? find_held_lock+0x35/0x1d0 [ 41.492935] ? handle_mm_fault+0x2a0/0x930 [ 41.497135] ? lock_downgrade+0x980/0x980 [ 41.501259] handle_mm_fault+0x38f/0x930 [ 41.505286] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 41.509834] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 41.515680] ? find_vma+0x30/0x150 [ 41.519188] __get_user_pages+0x50c/0x15f0 [ 41.523393] ? follow_page_mask+0x17f0/0x17f0 [ 41.527851] ? vma_link+0xe9/0x170 [ 41.531359] ? lock_acquire+0x1d5/0x580 [ 41.535298] ? lock_acquire+0x1d5/0x580 [ 41.539235] ? __mm_populate+0x2c7/0x450 [ 41.543263] ? lock_release+0xa40/0xa40 [ 41.547202] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 41.553058] ? rcu_note_context_switch+0x710/0x710 [ 41.557964] populate_vma_page_range+0x20e/0x2f0 [ 41.562685] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 41.567576] ? vmacache_find+0x5f/0x280 [ 41.571514] ? vmacache_update+0xfe/0x130 [ 41.575625] ? find_vma+0x30/0x150 [ 41.579132] __mm_populate+0x23a/0x450 [ 41.582986] ? populate_vma_page_range+0x2f0/0x2f0 [ 41.587878] ? down_read_killable+0x180/0x180 [ 41.592342] ? security_mmap_file+0x143/0x180 [ 41.596809] vm_mmap_pgoff+0x241/0x280 [ 41.600664] ? vma_is_stack_for_current+0xa0/0xa0 [ 41.605473] ? putname+0xee/0x130 [ 41.608892] ? rcu_read_lock_sched_held+0x108/0x120 [ 41.613873] ? kmem_cache_free+0x267/0x2a0 [ 41.618079] SyS_mmap_pgoff+0x462/0x5f0 [ 41.622022] ? find_mergeable_anon_vma+0xd0/0xd0 [ 41.626744] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 41.631727] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 41.636450] SyS_mmap+0x16/0x20 [ 41.639693] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 41.644412] RIP: 0033:0x449229 [ 41.647567] RSP: 002b:00007f23fe567d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 41.655256] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449229 [ 41.662493] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 41.669726] RBP: 0000000000000000 R08: 000000000000000e R09: 0000000000000000 [ 41.676962] R10: 0000000000008011 R11: 0000000000000212 R12: 00000000006dac20 [ 41.684199] R13: 6273752f7665642f R14: 00007f23fe5689c0 R15: 0000000000000005 [ 41.691444] 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 [ 41.710513] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c8617510 [ 41.717068] ---[ end trace 5af932595855aabc ]--- [ 41.721965] Kernel panic - not syncing: Fatal exception [ 41.727644] Dumping ftrace buffer: [ 41.731150] (ftrace buffer empty) [ 41.734835] Kernel Offset: disabled [ 41.738429] Rebooting in 86400 seconds..