[?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. [ 12.755878] audit: type=1400 audit(1514862320.301:6): avc: denied { map } for pid=3478 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 '10.128.15.220' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 24.253597] audit: type=1400 audit(1514862331.799:7): avc: denied { map } for pid=3494 comm="syzkaller982287" path="/root/syzkaller982287025" 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 [ 24.280188] audit: type=1400 audit(1514862331.804:8): avc: denied { map } for pid=3494 comm="syzkaller982287" path="/dev/usbmon0" dev="devtmpfs" ino=8863 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 [ 24.313544] page:00000000c8df3179 count:0 mapcount:0 mapping: (null) index:0x0 [ 24.321783] flags: 0x2fffc0000000000() [ 24.325732] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 24.333630] raw: ffffea0007064ea0 ffffea0007031760 0000000000000000 0000000000000000 [ 24.341534] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 24.348629] ------------[ cut here ]------------ [ 24.353359] kernel BUG at ./include/linux/mm.h:844! [ 24.358403] invalid opcode: 0000 [#1] SMP KASAN [ 24.363046] Dumping ftrace buffer: [ 24.366549] (ftrace buffer empty) [ 24.370223] Modules linked in: [ 24.373384] CPU: 0 PID: 3495 Comm: syzkaller982287 Not tainted 4.15.0-rc6+ #245 [ 24.380792] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.390124] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 24.395103] RSP: 0018:ffff8801c0d9f510 EFLAGS: 00010203 [ 24.400432] RAX: 0000000000000000 RBX: 1ffff100381b3ea4 RCX: 0000000000000000 [ 24.407666] RDX: 0000000000000000 RSI: 1ffff100381b3dee RDI: ffffed00381b3e90 [ 24.414902] RBP: ffff8801c0d9f5e8 R08: 1ffff100381b3db0 R09: 0000000000000000 [ 24.422143] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff100381b3ea8 [ 24.429379] R13: dffffc0000000000 R14: ffff8801c0d9f840 R15: ffffea0007048c00 [ 24.436614] FS: 00007f5ab1009700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 24.444803] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.450648] CR2: 00000000208be000 CR3: 00000001c13c2002 CR4: 00000000001606f0 [ 24.457887] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.465126] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.472359] Call Trace: [ 24.474915] ? mon_alloc_buff+0x1a0/0x1a0 [ 24.479035] ? finish_fault+0x1b4/0x2a0 [ 24.482974] ? lock_downgrade+0x980/0x980 [ 24.487085] ? do_swap_page+0x2c50/0x2c50 [ 24.491201] __do_fault+0xeb/0x30f [ 24.494710] ? pte_offset_kernel+0xc7/0xc7 [ 24.498913] ? check_noncircular+0x20/0x20 [ 24.503115] ? _raw_spin_unlock+0x22/0x30 [ 24.507230] __handle_mm_fault+0x1d8f/0x3ce0 [ 24.511606] ? __pmd_alloc+0x4e0/0x4e0 [ 24.515459] ? __save_stack_trace+0x7e/0xd0 [ 24.519751] ? find_held_lock+0x35/0x1d0 [ 24.523778] ? handle_mm_fault+0x248/0x8d0 [ 24.527977] ? lock_downgrade+0x980/0x980 [ 24.532102] handle_mm_fault+0x334/0x8d0 [ 24.536155] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 24.540702] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.546550] ? find_vma+0x30/0x150 [ 24.550060] __get_user_pages+0x50c/0x15f0 [ 24.554265] ? follow_page_mask+0x17f0/0x17f0 [ 24.558729] ? lock_acquire+0x1d5/0x580 [ 24.562665] ? lock_acquire+0x1d5/0x580 [ 24.566601] ? __mm_populate+0x2c7/0x450 [ 24.570636] ? lock_release+0xa40/0xa40 [ 24.574574] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.580426] ? rcu_note_context_switch+0x710/0x710 [ 24.585321] populate_vma_page_range+0x20e/0x2f0 [ 24.590041] ? get_user_pages+0xc0/0xc0 [ 24.593979] ? vmacache_find+0x5f/0x280 [ 24.597916] ? vmacache_update+0xfe/0x130 [ 24.602032] ? find_vma+0x30/0x150 [ 24.605537] __mm_populate+0x23a/0x450 [ 24.609390] ? populate_vma_page_range+0x2f0/0x2f0 [ 24.614285] ? down_read_killable+0x180/0x180 [ 24.618747] ? security_mmap_file+0x143/0x180 [ 24.623216] vm_mmap_pgoff+0x241/0x280 [ 24.627070] ? vma_is_stack_for_current+0xa0/0xa0 [ 24.631879] ? ___sys_recvmsg+0x640/0x640 [ 24.635991] ? selinux_capable+0x40/0x40 [ 24.640027] SyS_mmap_pgoff+0x462/0x5f0 [ 24.643969] ? find_mergeable_anon_vma+0xd0/0xd0 [ 24.648702] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.653699] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.658428] SyS_mmap+0x16/0x20 [ 24.661674] entry_SYSCALL_64_fastpath+0x23/0x9a [ 24.666393] RIP: 0033:0x449579 [ 24.669550] RSP: 002b:00007f5ab1008cd8 EFLAGS: 00000216 ORIG_RAX: 0000000000000009 [ 24.677222] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449579 [ 24.684461] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 24.691698] RBP: 00000000006dac20 R08: 0000000000000021 R09: 0000000000000000 [ 24.698934] R10: 0000000000008011 R11: 0000000000000216 R12: 0000000000000000 [ 24.706172] R13: 00007ffcaeeb7d5f R14: 00007f5ab10099c0 R15: 000000000000000b [ 24.713415] 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 b0 94 fd 48 c7 c6 20 b1 12 86 4c 89 ff e8 bc 98 bd fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 07 b0 94 fd [ 24.732481] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c0d9f510 [ 24.739139] ---[ end trace 24d7e88a0ac68221 ]--- [ 24.743935] Kernel panic - not syncing: Fatal exception [ 24.749629] Dumping ftrace buffer: [ 24.753145] (ftrace buffer empty) [ 24.756819] Kernel Offset: disabled [ 24.760410] Rebooting in 86400 seconds..