[?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. [ 13.068320] audit: type=1400 audit(1514499553.977:6): avc: denied { map } for pid=3135 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 '10.128.0.4' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program syzkaller login: [ 26.912683] audit: type=1400 audit(1514499567.821:7): avc: denied { map } for pid=3151 comm="syzkaller810430" path="/root/syzkaller810430245" 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 [ 26.938892] audit: type=1400 audit(1514499567.830:8): avc: denied { map } for pid=3151 comm="syzkaller810430" path="/dev/usbmon0" dev="devtmpfs" ino=138 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 [ 26.976875] page:0000000029086910 count:0 mapcount:0 mapping: (null) index:0x0 [ 26.985102] flags: 0x2fffc0000000000() [ 26.989100] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 26.996978] raw: ffffea00076c5ba0 ffffea000728d260 0000000000000000 0000000000000000 [ 27.004869] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 27.011948] ------------[ cut here ]------------ [ 27.016670] kernel BUG at ./include/linux/mm.h:844! [ 27.021692] invalid opcode: 0000 [#1] SMP KASAN [ 27.026338] Dumping ftrace buffer: [ 27.029842] (ftrace buffer empty) [ 27.033522] Modules linked in: [ 27.036688] CPU: 1 PID: 3152 Comm: syzkaller810430 Not tainted 4.15.0-rc5+ #239 [ 27.044108] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.053446] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 27.058427] RSP: 0018:ffff8801c814f510 EFLAGS: 00010203 [ 27.063756] RAX: 0000000000000000 RBX: 1ffff10039029ea4 RCX: 0000000000000000 [ 27.070994] RDX: 0000000000000000 RSI: 1ffff10039029dee RDI: ffffed0039029e90 [ 27.078239] RBP: ffff8801c814f5e8 R08: 1ffff10039029db0 R09: 0000000000000000 [ 27.085493] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff10039029ea8 [ 27.092743] R13: dffffc0000000000 R14: ffff8801c814f840 R15: ffffea0007203680 [ 27.099985] FS: 00007fbfbc645700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 27.108179] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.114028] CR2: 0000000020000000 CR3: 00000001c98bf006 CR4: 00000000001606e0 [ 27.121267] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.128505] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.135742] Call Trace: [ 27.138314] ? mon_alloc_buff+0x1a0/0x1a0 [ 27.142435] ? finish_fault+0x1b4/0x2a0 [ 27.146378] ? lock_downgrade+0x980/0x980 [ 27.150491] ? do_swap_page+0x2c50/0x2c50 [ 27.154614] __do_fault+0xeb/0x30f [ 27.158122] ? pte_offset_kernel+0xc7/0xc7 [ 27.162330] ? check_noncircular+0x20/0x20 [ 27.166532] ? _raw_spin_unlock+0x22/0x30 [ 27.170647] __handle_mm_fault+0x1d8f/0x3ce0 [ 27.175023] ? __pmd_alloc+0x4e0/0x4e0 [ 27.178884] ? __save_stack_trace+0x7e/0xd0 [ 27.183185] ? find_held_lock+0x35/0x1d0 [ 27.187216] ? handle_mm_fault+0x248/0x8d0 [ 27.191415] ? lock_downgrade+0x980/0x980 [ 27.195540] handle_mm_fault+0x334/0x8d0 [ 27.199567] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 27.204114] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 27.209961] ? find_vma+0x30/0x150 [ 27.213474] __get_user_pages+0x50c/0x15f0 [ 27.217684] ? follow_page_mask+0x17f0/0x17f0 [ 27.222149] ? lock_acquire+0x1d5/0x580 [ 27.226087] ? lock_acquire+0x1d5/0x580 [ 27.230025] ? __mm_populate+0x2c7/0x450 [ 27.234055] ? lock_release+0xa40/0xa40 [ 27.237996] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 27.243847] ? rcu_note_context_switch+0x710/0x710 [ 27.248745] populate_vma_page_range+0x20e/0x2f0 [ 27.253468] ? get_user_pages+0xc0/0xc0 [ 27.257409] ? vmacache_find+0x5f/0x280 [ 27.261359] ? vmacache_update+0xfe/0x130 [ 27.265478] ? find_vma+0x30/0x150 [ 27.268985] __mm_populate+0x23a/0x450 [ 27.272840] ? populate_vma_page_range+0x2f0/0x2f0 [ 27.277733] ? down_read_killable+0x180/0x180 [ 27.282201] ? security_mmap_file+0x143/0x180 [ 27.286666] vm_mmap_pgoff+0x241/0x280 [ 27.290522] ? vma_is_stack_for_current+0xa0/0xa0 [ 27.295343] ? rcu_read_lock_sched_held+0x108/0x120 [ 27.300330] SyS_mmap_pgoff+0x462/0x5f0 [ 27.304272] ? find_mergeable_anon_vma+0xd0/0xd0 [ 27.308995] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.313976] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 27.318699] SyS_mmap+0x16/0x20 [ 27.321945] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 27.326667] RIP: 0033:0x449359 [ 27.329824] RSP: 002b:00007fbfbc644d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 27.337497] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449359 [ 27.344745] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 27.351982] RBP: 00000000006dac20 R08: 0000000000000016 R09: 0000000000000000 [ 27.359216] R10: 0000000000008011 R11: 0000000000000212 R12: 6c74635f6664615f [ 27.366453] R13: 7461712f7665642f R14: 6273752f7665642f R15: 0000000000000009 [ 27.373707] 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 bd a4 fd 48 c7 c6 c0 c0 70 85 4c 89 ff e8 2c a3 cd fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 c7 bd a4 fd [ 27.392782] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c814f510 [ 27.399296] ---[ end trace ffed5ecd79dda229 ]--- [ 27.404037] Kernel panic - not syncing: Fatal exception [ 27.409743] Dumping ftrace buffer: [ 27.413255] (ftrace buffer empty) [ 27.416932] Kernel Offset: disabled [ 27.420527] Rebooting in 86400 seconds..