[?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. [ 10.866853] audit: type=1400 audit(1514728066.954:6): avc: denied { map } for pid=3118 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 '10.128.0.30' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program syzkaller login: [ 27.992125] audit: type=1400 audit(1514728084.079:7): avc: denied { map } for pid=3136 comm="syzkaller642328" path="/root/syzkaller642328445" 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 [ 28.018065] audit: type=1400 audit(1514728084.087:8): avc: denied { map } for pid=3136 comm="syzkaller642328" path="/dev/usbmon0" dev="devtmpfs" ino=169 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 [ 28.055317] page:ffffea0007384540 count:0 mapcount:0 mapping: (null) index:0x0 [ 28.063565] flags: 0x2fffc0000000000() [ 28.067477] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 28.075364] raw: ffffea00072b3ce0 ffffea000735b060 0000000000000000 0000000000000000 [ 28.083252] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 28.090339] ------------[ cut here ]------------ [ 28.095062] kernel BUG at ./include/linux/mm.h:844! [ 28.100089] invalid opcode: 0000 [#1] SMP KASAN [ 28.104736] Dumping ftrace buffer: [ 28.108244] (ftrace buffer empty) [ 28.111931] Modules linked in: [ 28.115093] CPU: 0 PID: 3137 Comm: syzkaller642328 Not tainted 4.15.0-rc4-mm1+ #49 [ 28.122763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.132090] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 28.137071] RSP: 0018:ffff8801c8e67510 EFLAGS: 00010203 [ 28.142398] RAX: 0000000000000000 RBX: 1ffff100391ccea4 RCX: 0000000000000000 [ 28.149634] RDX: 0000000000000000 RSI: 1ffff100391ccdee RDI: ffffed00391cce90 [ 28.156871] RBP: ffff8801c8e675e8 R08: 1ffff100391ccdb0 R09: 0000000000000000 [ 28.164105] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff100391ccea8 [ 28.171341] R13: dffffc0000000000 R14: ffff8801c8e67840 R15: ffffea0007384540 [ 28.178580] FS: 00007f28f6524700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 28.186770] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.192615] CR2: 0000559baeb7d480 CR3: 00000001cd6a6004 CR4: 00000000001606f0 [ 28.199854] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.207099] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.214332] Call Trace: [ 28.216887] ? mon_alloc_buff+0x1a0/0x1a0 [ 28.221004] ? find_held_lock+0x35/0x1d0 [ 28.225042] __do_fault+0xeb/0x30f [ 28.228548] ? vma_gap_callbacks_rotate+0x62/0x80 [ 28.233356] ? pte_offset_kernel+0xc7/0xc7 [ 28.237554] ? print_irqtrace_events+0x270/0x270 [ 28.242277] ? rb_insert_color_cached+0x1660/0x1660 [ 28.247260] ? vma_compute_subtree_gap+0x200/0x200 [ 28.252156] ? rb_insert_color_cached+0x1660/0x1660 [ 28.257137] ? check_noncircular+0x20/0x20 [ 28.261339] __handle_mm_fault+0x1d8f/0x3ce0 [ 28.265725] ? __pmd_alloc+0x4e0/0x4e0 [ 28.269582] ? find_held_lock+0x35/0x1d0 [ 28.273613] ? handle_mm_fault+0x2a0/0x930 [ 28.277821] ? lock_downgrade+0x980/0x980 [ 28.281947] handle_mm_fault+0x38f/0x930 [ 28.285973] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 28.290520] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 28.296369] ? find_vma+0x30/0x150 [ 28.299877] __get_user_pages+0x50c/0x15f0 [ 28.304085] ? follow_page_mask+0x17f0/0x17f0 [ 28.308547] ? vma_link+0xe9/0x170 [ 28.312067] ? lock_acquire+0x1d5/0x580 [ 28.316010] ? lock_acquire+0x1d5/0x580 [ 28.319953] ? __mm_populate+0x2c7/0x450 [ 28.323984] ? lock_release+0xa40/0xa40 [ 28.327923] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 28.333785] ? rcu_note_context_switch+0x710/0x710 [ 28.338683] populate_vma_page_range+0x20e/0x2f0 [ 28.343406] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 28.348298] ? vmacache_find+0x5f/0x280 [ 28.352247] ? vmacache_update+0xfe/0x130 [ 28.356363] ? find_vma+0x30/0x150 [ 28.359870] __mm_populate+0x23a/0x450 [ 28.363724] ? populate_vma_page_range+0x2f0/0x2f0 [ 28.368627] ? down_read_killable+0x180/0x180 [ 28.373090] ? security_mmap_file+0x143/0x180 [ 28.377686] vm_mmap_pgoff+0x241/0x280 [ 28.381544] ? vma_is_stack_for_current+0xa0/0xa0 [ 28.386353] ? putname+0xee/0x130 [ 28.389770] ? rcu_read_lock_sched_held+0x108/0x120 [ 28.394751] ? kmem_cache_free+0x267/0x2a0 [ 28.398959] SyS_mmap_pgoff+0x462/0x5f0 [ 28.402899] ? find_mergeable_anon_vma+0xd0/0xd0 [ 28.407623] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.412605] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.417329] SyS_mmap+0x16/0x20 [ 28.420575] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 28.425296] RIP: 0033:0x449229 [ 28.428450] RSP: 002b:00007f28f6523d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 28.436125] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449229 [ 28.443361] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 28.450598] RBP: 0000000000000000 R08: 000000000000000d R09: 0000000000000000 [ 28.457833] R10: 0000000000008011 R11: 0000000000000212 R12: 00000000006dac20 [ 28.465068] R13: 6273752f7665642f R14: 00007f28f65249c0 R15: 0000000000000005 [ 28.472310] 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 db e1 96 fd 48 c7 c6 80 1f d1 85 4c 89 ff e8 6c a3 c0 fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 b7 e1 96 fd [ 28.491372] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c8e67510 [ 28.497881] ---[ end trace 929e41e779f4b7fa ]--- [ 28.502636] Kernel panic - not syncing: Fatal exception [ 28.507999] Dumping ftrace buffer: [ 28.511503] (ftrace buffer empty) [ 28.515178] Kernel Offset: disabled [ 28.518772] Rebooting in 86400 seconds..