[?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. [ 12.794104] audit: type=1400 audit(1514176583.743:6): avc: denied { map } for pid=3140 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-kasan-gce-386-1,10.128.15.199' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.741130] audit: type=1400 audit(1514176601.690:7): avc: denied { map } for pid=3158 comm="syzkaller152368" path="/root/syzkaller152368231" 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 executing program executing program executing program executing program executing program [ 30.824794] audit: type=1400 audit(1514176601.774:8): avc: denied { map } for pid=3159 comm="syzkaller152368" path="/dev/usbmon0" dev="devtmpfs" ino=170 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 [ 30.888306] page:0000000034ffbd6f count:0 mapcount:0 mapping: (null) index:0x0 [ 30.896537] flags: 0x2fffc0000000000() [ 30.900433] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 30.908330] raw: ffffea000723ea60 ffffea0007239160 0000000000000000 0000000000000000 [ 30.916227] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 30.923342] ------------[ cut here ]------------ [ 30.928065] kernel BUG at ./include/linux/mm.h:844! [ 30.933184] invalid opcode: 0000 [#1] SMP KASAN [ 30.937823] Dumping ftrace buffer: [ 30.941328] (ftrace buffer empty) [ 30.945006] Modules linked in: [ 30.948166] CPU: 1 PID: 3160 Comm: syzkaller152368 Not tainted 4.15.0-rc5+ #147 [ 30.955576] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.964903] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 30.969882] RSP: 0018:ffff8801c85c7388 EFLAGS: 00010203 [ 30.975208] RAX: 0000000000000000 RBX: 1ffff100390b8e73 RCX: 0000000000000000 [ 30.982444] RDX: 0000000000000000 RSI: 1ffff100390b8dbd RDI: ffffed00390b8e60 [ 30.989681] RBP: ffff8801c85c7460 R08: 1ffff100390b8d7f R09: 0000000000000000 [ 30.996931] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff100390b8e77 [ 31.004166] R13: dffffc0000000000 R14: ffff8801c85c76b8 R15: ffffea000723c3c0 [ 31.011400] FS: 0000000000000000(0000) GS:ffff8801db500000(0063) knlGS:00000000f7f81b40 [ 31.019589] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 31.025439] CR2: 0000000020fb1000 CR3: 00000001cb69e006 CR4: 00000000001606e0 [ 31.032684] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.039920] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.047155] Call Trace: [ 31.049713] ? mon_alloc_buff+0x1a0/0x1a0 [ 31.053824] ? find_held_lock+0x35/0x1d0 [ 31.057856] __do_fault+0xeb/0x30f [ 31.061362] ? pte_offset_kernel+0xc7/0xc7 [ 31.065563] ? rb_insert_color_cached+0x1660/0x1660 [ 31.070544] ? vma_compute_subtree_gap+0x200/0x200 [ 31.075435] ? check_noncircular+0x20/0x20 [ 31.079634] __handle_mm_fault+0x1d8f/0x3ce0 [ 31.084008] ? __pmd_alloc+0x4e0/0x4e0 [ 31.087861] ? __save_stack_trace+0x7e/0xd0 [ 31.092148] ? find_held_lock+0x35/0x1d0 [ 31.096176] ? handle_mm_fault+0x248/0x8d0 [ 31.100375] ? lock_downgrade+0x980/0x980 [ 31.104496] handle_mm_fault+0x334/0x8d0 [ 31.108522] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 31.113070] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 31.118926] ? find_vma+0x30/0x150 [ 31.122438] __get_user_pages+0x50c/0x15f0 [ 31.126642] ? follow_page_mask+0x17f0/0x17f0 [ 31.131110] ? lock_acquire+0x1d5/0x580 [ 31.135047] ? lock_acquire+0x1d5/0x580 [ 31.138985] ? __mm_populate+0x2c7/0x450 [ 31.143013] ? lock_release+0xa40/0xa40 [ 31.146953] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 31.152805] ? rcu_note_context_switch+0x710/0x710 [ 31.157703] populate_vma_page_range+0x20e/0x2f0 [ 31.162424] ? get_user_pages+0xc0/0xc0 [ 31.166362] ? vmacache_find+0x5f/0x280 [ 31.170300] ? vmacache_update+0xfe/0x130 [ 31.174412] ? find_vma+0x30/0x150 [ 31.177917] __mm_populate+0x23a/0x450 [ 31.181769] ? populate_vma_page_range+0x2f0/0x2f0 [ 31.186663] ? down_read_killable+0x180/0x180 [ 31.191132] ? security_mmap_file+0x143/0x180 [ 31.195596] vm_mmap_pgoff+0x241/0x280 [ 31.199453] ? vma_is_stack_for_current+0xa0/0xa0 [ 31.204258] ? lock_release+0xa40/0xa40 [ 31.208200] ? retint_kernel+0x10/0x10 [ 31.212065] SyS_mmap_pgoff+0x462/0x5f0 [ 31.216008] ? find_mergeable_anon_vma+0xd0/0xd0 [ 31.220729] ? do_fast_syscall_32+0x156/0xf9d [ 31.225190] ? find_mergeable_anon_vma+0xd0/0xd0 [ 31.229909] do_fast_syscall_32+0x3ee/0xf9d [ 31.234195] ? do_int80_syscall_32+0x9d0/0x9d0 [ 31.238743] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.244247] ? syscall_return_slowpath+0x2ad/0x550 [ 31.249140] ? sysret32_from_system_call+0x5/0x3b [ 31.253947] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.258758] entry_SYSENTER_compat+0x54/0x63 [ 31.263128] RIP: 0023:0xf7f85c79 [ 31.266456] RSP: 002b:00000000f7f8111c EFLAGS: 00000296 ORIG_RAX: 00000000000000c0 [ 31.274127] RAX: ffffffffffffffda RBX: 0000000020ac6000 RCX: 0000000000004000 [ 31.281360] RDX: 0000000001000004 RSI: 0000000000008011 RDI: 000000000000001b [ 31.288592] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 31.295826] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 31.303062] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 31.310301] 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 bf a4 fd 48 c7 c6 c0 c0 70 85 4c 89 ff e8 2c a3 cd fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 17 bf a4 fd [ 31.329361] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c85c7388 [ 31.335881] ---[ end trace 01b0bfc3850dfd14 ]--- [ 31.340775] Kernel panic - not syncing: Fatal exception [ 31.346476] Dumping ftrace buffer: [ 31.349987] (ftrace buffer empty) [ 31.353673] Kernel Offset: disabled [ 31.357277] Rebooting in 86400 seconds..