[?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. [ 12.358487] audit: type=1400 audit(1514404828.996:6): avc: denied { map } for pid=3129 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 '10.128.0.9' (ECDSA) to the list of known hosts. executing program executing program executing program executing program syzkaller login: [ 18.528813] audit: type=1400 audit(1514404835.166:7): avc: denied { map } for pid=3143 comm="syzkaller052198" path="/root/syzkaller052198173" 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 [ 18.555491] audit: type=1400 audit(1514404835.192:8): avc: denied { map } for pid=3143 comm="syzkaller052198" path="/dev/usbmon0" dev="devtmpfs" ino=97 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 [ 18.593699] page:00000000644566e3 count:0 mapcount:0 mapping: (null) index:0x0 [ 18.602094] flags: 0x2fffc0000000000() [ 18.606050] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 18.613972] raw: ffffea0007250e60 ffffea00072248e0 0000000000000000 0000000000000000 [ 18.621858] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 18.628975] ------------[ cut here ]------------ [ 18.633706] kernel BUG at ./include/linux/mm.h:844! [ 18.638739] invalid opcode: 0000 [#1] SMP KASAN [ 18.643382] Dumping ftrace buffer: [ 18.646886] (ftrace buffer empty) [ 18.650563] Modules linked in: [ 18.653725] CPU: 0 PID: 3144 Comm: syzkaller052198 Not tainted 4.15.0-rc4-next-20171221+ #78 [ 18.662263] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.671592] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 18.676578] RSP: 0018:ffff8801c8997510 EFLAGS: 00010203 [ 18.681907] RAX: 0000000000000000 RBX: 1ffff10039132ea4 RCX: 0000000000000000 [ 18.689143] RDX: 0000000000000000 RSI: 1ffff10039132dee RDI: ffffed0039132e90 [ 18.696379] RBP: ffff8801c89975e8 R08: 1ffff10039132db0 R09: 0000000000000000 [ 18.703617] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff10039132ea8 [ 18.710854] R13: dffffc0000000000 R14: ffff8801c8997840 R15: ffffea0007224880 [ 18.718099] FS: 00007fbdf07b1700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 18.726292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.732138] CR2: 00000000208be000 CR3: 00000001c8930001 CR4: 00000000001606f0 [ 18.739375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.746612] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.753847] Call Trace: [ 18.756402] ? mon_alloc_buff+0x1a0/0x1a0 [ 18.760517] ? find_held_lock+0x35/0x1d0 [ 18.764552] __do_fault+0xeb/0x30f [ 18.768069] ? vma_gap_callbacks_rotate+0x62/0x80 [ 18.772877] ? pte_offset_kernel+0xc7/0xc7 [ 18.777077] ? print_irqtrace_events+0x270/0x270 [ 18.781800] ? rb_insert_color_cached+0x1660/0x1660 [ 18.786782] ? vma_compute_subtree_gap+0x200/0x200 [ 18.791677] ? rb_insert_color_cached+0x1660/0x1660 [ 18.796660] ? check_noncircular+0x20/0x20 [ 18.800863] __handle_mm_fault+0x1d8f/0x3ce0 [ 18.805239] ? __pmd_alloc+0x4e0/0x4e0 [ 18.809097] ? find_held_lock+0x35/0x1d0 [ 18.813128] ? handle_mm_fault+0x2a0/0x930 [ 18.817330] ? lock_downgrade+0x980/0x980 [ 18.821453] handle_mm_fault+0x38f/0x930 [ 18.825482] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 18.830030] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 18.835877] ? find_vma+0x30/0x150 [ 18.839385] __get_user_pages+0x50c/0x15f0 [ 18.843590] ? follow_page_mask+0x17f0/0x17f0 [ 18.848051] ? vma_link+0xe9/0x170 [ 18.851568] ? lock_acquire+0x1d5/0x580 [ 18.855505] ? lock_acquire+0x1d5/0x580 [ 18.859443] ? __mm_populate+0x2c7/0x450 [ 18.863475] ? lock_release+0xa40/0xa40 [ 18.867423] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 18.873274] ? rcu_note_context_switch+0x710/0x710 [ 18.878172] populate_vma_page_range+0x20e/0x2f0 [ 18.882898] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 18.887792] ? vmacache_find+0x5f/0x280 [ 18.891733] ? vmacache_update+0xfe/0x130 [ 18.895846] ? find_vma+0x30/0x150 [ 18.899353] __mm_populate+0x23a/0x450 [ 18.903218] ? populate_vma_page_range+0x2f0/0x2f0 [ 18.908112] ? down_read_killable+0x180/0x180 [ 18.912575] ? security_mmap_file+0x143/0x180 [ 18.917041] vm_mmap_pgoff+0x241/0x280 [ 18.920898] ? vma_is_stack_for_current+0xa0/0xa0 [ 18.925708] ? putname+0xee/0x130 [ 18.929127] ? rcu_read_lock_sched_held+0x108/0x120 [ 18.934111] ? kmem_cache_free+0x267/0x2a0 [ 18.938318] SyS_mmap_pgoff+0x462/0x5f0 [ 18.942262] ? find_mergeable_anon_vma+0xd0/0xd0 [ 18.946986] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 18.951969] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 18.956695] SyS_mmap+0x16/0x20 [ 18.959940] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 18.964660] RIP: 0033:0x449249 [ 18.967815] RSP: 002b:00007fbdf07b0d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 18.975493] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449249 [ 18.982733] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 18.989970] RBP: 0000000000000000 R08: 000000000000000a R09: 0000000000000000 [ 18.997209] R10: 0000000000008011 R11: 0000000000000212 R12: 00000000006dac20 [ 19.004448] R13: 6273752f7665642f R14: 00007fbdf07b19c0 R15: 0000000000000005 [ 19.011693] 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 [ 19.030778] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c8997510 [ 19.037317] ---[ end trace 3a1eab850ac5ad0d ]--- [ 19.042283] Kernel panic - not syncing: Fatal exception [ 19.048036] Dumping ftrace buffer: [ 19.051543] (ftrace buffer empty) [ 19.055220] Kernel Offset: disabled [ 19.058816] Rebooting in 86400 seconds..