[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 10.737286] audit: type=1400 audit(1514159412.414:6): avc: denied { map } for pid=3123 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 'ci-upstream-mmots-kasan-gce-2,10.128.0.24' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program syzkaller login: [ 16.913251] audit: type=1400 audit(1514159418.589:7): avc: denied { map } for pid=3137 comm="syzkaller576620" path="/root/syzkaller576620888" 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 [ 16.939358] audit: type=1400 audit(1514159418.598:8): avc: denied { map } for pid=3137 comm="syzkaller576620" path="/dev/usbmon0" dev="devtmpfs" ino=8938 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 [ 16.969569] page:ffffea0007353240 count:0 mapcount:0 mapping: (null) index:0x0 [ 16.977769] flags: 0x2fffc0000000000() [ 16.981669] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 16.989555] raw: ffffea00072ced60 ffffea0007311360 0000000000000000 0000000000000000 [ 16.997434] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 17.004532] ------------[ cut here ]------------ [ 17.009259] kernel BUG at ./include/linux/mm.h:844! [ 17.014277] invalid opcode: 0000 [#1] SMP KASAN [ 17.018919] Dumping ftrace buffer: [ 17.022421] (ftrace buffer empty) [ 17.026098] Modules linked in: [ 17.029260] CPU: 0 PID: 3138 Comm: syzkaller576620 Not tainted 4.15.0-rc4-mm1+ #49 [ 17.036927] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.046256] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 17.051408] RSP: 0018:ffff8801c88cf510 EFLAGS: 00010203 [ 17.056739] RAX: 0000000000000000 RBX: 1ffff10039119ea4 RCX: 0000000000000000 [ 17.063977] RDX: 0000000000000000 RSI: 1ffff10039119dee RDI: ffffed0039119e90 [ 17.071219] RBP: ffff8801c88cf5e8 R08: 1ffff10039119db0 R09: 0000000000000000 [ 17.078454] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff10039119ea8 [ 17.085690] R13: dffffc0000000000 R14: ffff8801c88cf840 R15: ffffea0007353240 [ 17.092928] FS: 00007f1bf928c700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 17.101121] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.106966] CR2: 0000555babe25098 CR3: 00000001cd5e1001 CR4: 00000000001606f0 [ 17.114201] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 17.121435] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 17.128672] Call Trace: [ 17.131230] ? mon_alloc_buff+0x1a0/0x1a0 [ 17.135345] ? finish_fault+0x1b4/0x2a0 [ 17.139284] ? lock_downgrade+0x980/0x980 [ 17.143396] ? do_swap_page+0x2a10/0x2a10 [ 17.147516] __do_fault+0xeb/0x30f [ 17.151028] ? pte_offset_kernel+0xc7/0xc7 [ 17.155231] ? vma_compute_subtree_gap+0x200/0x200 [ 17.160129] ? check_noncircular+0x20/0x20 [ 17.164326] ? _raw_spin_unlock+0x22/0x30 [ 17.168443] __handle_mm_fault+0x1d8f/0x3ce0 [ 17.172819] ? __pmd_alloc+0x4e0/0x4e0 [ 17.176678] ? find_held_lock+0x35/0x1d0 [ 17.180712] ? handle_mm_fault+0x2a0/0x930 [ 17.184924] ? lock_downgrade+0x980/0x980 [ 17.189051] handle_mm_fault+0x38f/0x930 [ 17.193082] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 17.197631] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 17.203479] ? find_vma+0x30/0x150 [ 17.206985] __get_user_pages+0x50c/0x15f0 [ 17.211191] ? follow_page_mask+0x17f0/0x17f0 [ 17.215651] ? vma_link+0xe9/0x170 [ 17.219158] ? lock_acquire+0x1d5/0x580 [ 17.223097] ? lock_acquire+0x1d5/0x580 [ 17.227037] ? __mm_populate+0x2c7/0x450 [ 17.231066] ? lock_release+0xa40/0xa40 [ 17.235005] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 17.240861] ? rcu_note_context_switch+0x710/0x710 [ 17.245759] populate_vma_page_range+0x20e/0x2f0 [ 17.250482] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 17.255432] ? vmacache_find+0x5f/0x280 [ 17.259370] ? vmacache_update+0xfe/0x130 [ 17.263482] ? find_vma+0x30/0x150 [ 17.266998] __mm_populate+0x23a/0x450 [ 17.270859] ? populate_vma_page_range+0x2f0/0x2f0 [ 17.275754] ? down_read_killable+0x180/0x180 [ 17.280215] ? security_mmap_file+0x143/0x180 [ 17.284677] vm_mmap_pgoff+0x241/0x280 [ 17.288532] ? vma_is_stack_for_current+0xa0/0xa0 [ 17.293339] ? putname+0xee/0x130 [ 17.296756] ? rcu_read_lock_sched_held+0x108/0x120 [ 17.301738] ? kmem_cache_free+0x267/0x2a0 [ 17.305942] SyS_mmap_pgoff+0x462/0x5f0 [ 17.309882] ? find_mergeable_anon_vma+0xd0/0xd0 [ 17.314603] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 17.319585] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 17.324308] SyS_mmap+0x16/0x20 [ 17.327554] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 17.332274] RIP: 0033:0x449479 [ 17.335428] RSP: 002b:00007f1bf928bcd8 EFLAGS: 00000216 ORIG_RAX: 0000000000000009 [ 17.343113] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449479 [ 17.350347] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 17.357583] RBP: 00000000006dac20 R08: 000000000000000d R09: 0000000000000000 [ 17.364828] R10: 0000000000008011 R11: 0000000000000216 R12: 0000000000000000 [ 17.372063] R13: 00007ffdc8c76e4f R14: 00007f1bf928c9c0 R15: 0000000000000007 [ 17.379305] 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 [ 17.398370] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c88cf510 [ 17.404887] ---[ end trace e201a7dc1fbe540e ]--- [ 17.409869] Kernel panic - not syncing: Fatal exception [ 17.415235] Dumping ftrace buffer: [ 17.418744] (ftrace buffer empty) [ 17.422419] Kernel Offset: disabled [ 17.426009] Rebooting in 86400 seconds..