[?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. [ 12.290791] audit: type=1400 audit(1514714490.922:6): avc: denied { map } for pid=3174 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 '10.128.0.6' (ECDSA) to the list of known hosts. executing program executing program executing program executing program syzkaller login: [ 18.516391] audit: type=1400 audit(1514714497.148:7): avc: denied { map } for pid=3189 comm="syzkaller650908" path="/root/syzkaller650908814" 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 [ 18.542335] audit: type=1400 audit(1514714497.162:8): avc: denied { map } for pid=3189 comm="syzkaller650908" path="/dev/usbmon0" dev="devtmpfs" ino=8821 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 [ 18.572019] page:000000008d66a530 count:0 mapcount:0 mapping: (null) index:0x0 [ 18.580275] flags: 0x2fffc0000000000() [ 18.584169] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 18.592053] raw: ffffea0007204e60 ffffea00071ea8a0 0000000000000000 0000000000000000 [ 18.599944] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 18.607082] ------------[ cut here ]------------ [ 18.611809] kernel BUG at ./include/linux/mm.h:844! [ 18.616981] invalid opcode: 0000 [#1] SMP KASAN [ 18.621631] Dumping ftrace buffer: [ 18.625136] (ftrace buffer empty) [ 18.628813] Modules linked in: [ 18.631972] CPU: 0 PID: 3190 Comm: syzkaller650908 Not tainted 4.15.0-rc5+ #243 [ 18.639385] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.648713] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 18.653694] RSP: 0018:ffff8801c7acf510 EFLAGS: 00010203 [ 18.659026] RAX: 0000000000000000 RBX: 1ffff10038f59ea4 RCX: 0000000000000000 [ 18.666261] RDX: 0000000000000000 RSI: 1ffff10038f59dee RDI: ffffed0038f59e90 [ 18.673502] RBP: ffff8801c7acf5e8 R08: 1ffff10038f59db0 R09: 0000000000000000 [ 18.680754] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff10038f59ea8 [ 18.687998] R13: dffffc0000000000 R14: ffff8801c7acf840 R15: ffffea00071e54c0 [ 18.695240] FS: 00007f92e27b9700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 18.703440] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.709288] CR2: 00000000208be000 CR3: 00000001c96a0001 CR4: 00000000001606f0 [ 18.716528] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.723766] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.731004] Call Trace: [ 18.733575] ? mon_alloc_buff+0x1a0/0x1a0 [ 18.737695] ? finish_fault+0x1b4/0x2a0 [ 18.741642] ? lock_downgrade+0x980/0x980 [ 18.745755] ? do_swap_page+0x2c50/0x2c50 [ 18.749870] __do_fault+0xeb/0x30f [ 18.753382] ? pte_offset_kernel+0xc7/0xc7 [ 18.757597] ? check_noncircular+0x20/0x20 [ 18.761808] ? _raw_spin_unlock+0x22/0x30 [ 18.765925] __handle_mm_fault+0x1d8f/0x3ce0 [ 18.770303] ? __pmd_alloc+0x4e0/0x4e0 [ 18.774161] ? __save_stack_trace+0x7e/0xd0 [ 18.778456] ? find_held_lock+0x35/0x1d0 [ 18.782487] ? handle_mm_fault+0x248/0x8d0 [ 18.786694] ? lock_downgrade+0x980/0x980 [ 18.790826] handle_mm_fault+0x334/0x8d0 [ 18.794863] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 18.799414] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 18.805265] ? find_vma+0x30/0x150 [ 18.808775] __get_user_pages+0x50c/0x15f0 [ 18.812985] ? follow_page_mask+0x17f0/0x17f0 [ 18.817456] ? lock_acquire+0x1d5/0x580 [ 18.821404] ? lock_acquire+0x1d5/0x580 [ 18.825344] ? __mm_populate+0x2c7/0x450 [ 18.829378] ? lock_release+0xa40/0xa40 [ 18.833317] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 18.839170] ? rcu_note_context_switch+0x710/0x710 [ 18.844073] populate_vma_page_range+0x20e/0x2f0 [ 18.848795] ? get_user_pages+0xc0/0xc0 [ 18.852736] ? vmacache_find+0x5f/0x280 [ 18.856676] ? vmacache_update+0xfe/0x130 [ 18.860792] ? find_vma+0x30/0x150 [ 18.864305] __mm_populate+0x23a/0x450 [ 18.868167] ? populate_vma_page_range+0x2f0/0x2f0 [ 18.873075] ? down_read_killable+0x180/0x180 [ 18.877547] ? security_mmap_file+0x143/0x180 [ 18.882019] vm_mmap_pgoff+0x241/0x280 [ 18.885880] ? vma_is_stack_for_current+0xa0/0xa0 [ 18.890691] ? putname+0xee/0x130 [ 18.894112] ? rcu_read_lock_sched_held+0x108/0x120 [ 18.899102] ? kmem_cache_free+0x267/0x2a0 [ 18.903308] SyS_mmap_pgoff+0x462/0x5f0 [ 18.907251] ? find_mergeable_anon_vma+0xd0/0xd0 [ 18.911974] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 18.916959] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 18.921684] SyS_mmap+0x16/0x20 [ 18.924929] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 18.929653] RIP: 0033:0x449269 [ 18.932808] RSP: 002b:00007f92e27b8d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 18.940480] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449269 [ 18.947717] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 18.954951] RBP: 00000000006dac20 R08: 0000000000000014 R09: 0000000000000000 [ 18.962186] R10: 0000000000008011 R11: 0000000000000212 R12: 6273752f7665642f [ 18.969422] R13: 702f74656e2f666c R14: 65732f636f72702f R15: 0000000000000005 [ 18.976664] 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 2b 6a 9e fd 48 c7 c6 40 8d d1 85 4c 89 ff e8 3c 51 c7 fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 07 6a 9e fd [ 18.995734] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c7acf510 [ 19.002307] ---[ end trace 490b7f639a7fd6dc ]--- [ 19.007363] Kernel panic - not syncing: Fatal exception [ 19.013079] Dumping ftrace buffer: [ 19.016592] (ftrace buffer empty) [ 19.020274] Kernel Offset: disabled [ 19.023870] Rebooting in 86400 seconds..