[?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. [ 12.818247] audit: type=1400 audit(1515546021.235:6): avc: denied { map } for pid=3481 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 '10.128.15.225' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program syzkaller login: [ 28.432333] audit: type=1400 audit(1515546036.849:7): avc: denied { map } for pid=3498 comm="syzkaller274427" path="/root/syzkaller274427018" 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 [ 28.458468] audit: type=1400 audit(1515546036.858:8): avc: denied { map } for pid=3498 comm="syzkaller274427" path="/dev/usbmon0" dev="devtmpfs" ino=1134 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 [ 28.497577] page:ffffea0006fd2fc0 count:0 mapcount:0 mapping: (null) index:0x0 [ 28.505826] flags: 0x2fffc0000000000() [ 28.509751] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 28.517635] raw: ffffea0006fd32e0 ffffea0006fd1060 0000000000000000 0000000000000000 [ 28.525532] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 28.532646] ------------[ cut here ]------------ [ 28.537372] kernel BUG at ./include/linux/mm.h:844! [ 28.542409] invalid opcode: 0000 [#1] SMP KASAN [ 28.547056] Dumping ftrace buffer: [ 28.550569] (ftrace buffer empty) [ 28.554256] Modules linked in: [ 28.557417] CPU: 1 PID: 3499 Comm: syzkaller274427 Not tainted 4.15.0-rc6-mm1+ #52 [ 28.565087] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.574424] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 28.579402] RSP: 0018:ffff8801c5d07510 EFLAGS: 00010203 [ 28.584732] RAX: 0000000000000000 RBX: 1ffff10038ba0ea4 RCX: 0000000000000000 [ 28.591968] RDX: 0000000000000000 RSI: 1ffff10038ba0db8 RDI: ffffed0038ba0e90 [ 28.599215] RBP: ffff8801c5d075e8 R08: 1ffff10038ba0db0 R09: 0000000000000000 [ 28.606452] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff10038ba0ea8 [ 28.613690] R13: dffffc0000000000 R14: ffff8801c5d07840 R15: ffffea0006fd2fc0 [ 28.620937] FS: 00007f524ed42700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 28.629131] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.634978] CR2: 000055b640c940b8 CR3: 00000001c06fe001 CR4: 00000000001606e0 [ 28.642227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.649467] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.656709] Call Trace: [ 28.659265] ? mon_alloc_buff+0x1a0/0x1a0 [ 28.663384] ? finish_fault+0x1b4/0x2a0 [ 28.667328] ? lock_downgrade+0x980/0x980 [ 28.671453] ? do_swap_page+0x2ce0/0x2ce0 [ 28.675576] __do_fault+0xeb/0x30f [ 28.679092] ? pte_offset_kernel+0xc7/0xc7 [ 28.683294] ? vma_compute_subtree_gap+0x200/0x200 [ 28.688199] ? check_noncircular+0x20/0x20 [ 28.692400] ? _raw_spin_unlock+0x22/0x30 [ 28.696514] __handle_mm_fault+0x1d8f/0x3ce0 [ 28.700890] ? __pmd_alloc+0x4e0/0x4e0 [ 28.704756] ? find_held_lock+0x35/0x1d0 [ 28.708793] ? handle_mm_fault+0x2a0/0x930 [ 28.712994] ? lock_downgrade+0x980/0x980 [ 28.717118] handle_mm_fault+0x38f/0x930 [ 28.721156] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 28.725704] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 28.731551] ? find_vma+0x30/0x150 [ 28.735061] __get_user_pages+0x50c/0x15f0 [ 28.739275] ? follow_page_mask+0x17f0/0x17f0 [ 28.743741] ? vma_link+0xe9/0x170 [ 28.747250] ? lock_acquire+0x1d5/0x580 [ 28.751199] ? lock_acquire+0x1d5/0x580 [ 28.755138] ? __mm_populate+0x2c7/0x450 [ 28.759169] ? lock_release+0xa40/0xa40 [ 28.763108] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 28.768959] ? rcu_note_context_switch+0x710/0x710 [ 28.773868] populate_vma_page_range+0x20e/0x2f0 [ 28.778592] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 28.783485] ? vmacache_find+0x5f/0x280 [ 28.787443] ? vmacache_update+0xfe/0x130 [ 28.791561] ? find_vma+0x30/0x150 [ 28.795078] __mm_populate+0x23a/0x450 [ 28.798954] ? populate_vma_page_range+0x2f0/0x2f0 [ 28.803858] ? down_read_killable+0x180/0x180 [ 28.808328] ? security_mmap_file+0x143/0x180 [ 28.812791] vm_mmap_pgoff+0x241/0x280 [ 28.816648] ? vma_is_stack_for_current+0xa0/0xa0 [ 28.821466] SyS_mmap_pgoff+0x462/0x5f0 [ 28.825414] ? find_mergeable_anon_vma+0xd0/0xd0 [ 28.830136] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.835118] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.839847] SyS_mmap+0x16/0x20 [ 28.843092] entry_SYSCALL_64_fastpath+0x23/0x9a [ 28.847812] RIP: 0033:0x449799 [ 28.850967] RSP: 002b:00007f524ed41cd8 EFLAGS: 00000216 ORIG_RAX: 0000000000000009 [ 28.858647] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449799 [ 28.865883] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 28.873118] RBP: 00000000006dac20 R08: 000000000000000d R09: 0000000000000000 [ 28.880356] R10: 0000000000008011 R11: 0000000000000216 R12: 0000000000000000 [ 28.887591] R13: 00007fffb5f7be2f R14: 00007f524ed429c0 R15: 0000000000000007 [ 28.894834] 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 3b 8b 90 fd 48 c7 c6 a0 0e 13 86 4c 89 ff e8 0c 74 ba fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 17 8b 90 fd [ 28.913898] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c5d07510 [ 28.920432] ---[ end trace 45478eaed5423b5f ]--- [ 28.925217] Kernel panic - not syncing: Fatal exception [ 28.930591] Dumping ftrace buffer: [ 28.934100] (ftrace buffer empty) [ 28.937776] Kernel Offset: disabled [ 28.941377] Rebooting in 86400 seconds..