[?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. [ 12.617743] audit: type=1400 audit(1514380443.012:6): avc: denied { map } for pid=3130 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 '10.128.0.49' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 24.785170] audit: type=1400 audit(1514380455.179:7): avc: denied { map } for pid=3146 comm="syzkaller182414" path="/root/syzkaller182414941" 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 [ 24.812079] audit: type=1400 audit(1514380455.206:8): avc: denied { map } for pid=3146 comm="syzkaller182414" path="/dev/usbmon0" dev="devtmpfs" ino=1061 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 [ 24.854614] page:00000000b9eba416 count:0 mapcount:0 mapping: (null) index:0x0 [ 24.862960] flags: 0x2fffc0000000000() [ 24.867188] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 24.875091] raw: ffffea000725a5a0 ffffea000725a5e0 0000000000000000 0000000000000000 [ 24.882986] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 24.890081] ------------[ cut here ]------------ [ 24.894806] kernel BUG at ./include/linux/mm.h:844! [ 24.899831] invalid opcode: 0000 [#1] SMP KASAN [ 24.904481] Dumping ftrace buffer: [ 24.907990] (ftrace buffer empty) [ 24.911669] Modules linked in: [ 24.914832] CPU: 0 PID: 3147 Comm: syzkaller182414 Not tainted 4.15.0-rc4-next-20171221+ #78 [ 24.923370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.932701] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 24.937682] RSP: 0018:ffff8801c8b97510 EFLAGS: 00010203 [ 24.943011] RAX: 0000000000000000 RBX: 1ffff10039172ea4 RCX: 0000000000000000 [ 24.950249] RDX: 0000000000000000 RSI: 1ffff10039172dee RDI: ffffed0039172e90 [ 24.957498] RBP: ffff8801c8b975e8 R08: 1ffff10039172db0 R09: 0000000000000000 [ 24.964733] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff10039172ea8 [ 24.971969] R13: dffffc0000000000 R14: ffff8801c8b97840 R15: ffffea0007408680 [ 24.979208] FS: 00007f9ada49b700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 24.987403] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.993250] CR2: 0000000020394fe0 CR3: 00000001d486d003 CR4: 00000000001606f0 [ 25.000489] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.007726] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.014962] Call Trace: [ 25.017524] ? mon_alloc_buff+0x1a0/0x1a0 [ 25.021640] ? find_held_lock+0x35/0x1d0 [ 25.025687] __do_fault+0xeb/0x30f [ 25.029193] ? vma_gap_callbacks_rotate+0x62/0x80 [ 25.034001] ? pte_offset_kernel+0xc7/0xc7 [ 25.038201] ? print_irqtrace_events+0x270/0x270 [ 25.042924] ? rb_insert_color_cached+0x1660/0x1660 [ 25.047906] ? vma_compute_subtree_gap+0x200/0x200 [ 25.052800] ? rb_insert_color_cached+0x1660/0x1660 [ 25.057783] ? check_noncircular+0x20/0x20 [ 25.061986] __handle_mm_fault+0x1d8f/0x3ce0 [ 25.066363] ? __pmd_alloc+0x4e0/0x4e0 [ 25.070238] ? find_held_lock+0x35/0x1d0 [ 25.074269] ? handle_mm_fault+0x2a0/0x930 [ 25.078472] ? lock_downgrade+0x980/0x980 [ 25.082594] handle_mm_fault+0x38f/0x930 [ 25.086620] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 25.091168] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.097018] ? find_vma+0x30/0x150 [ 25.100530] __get_user_pages+0x50c/0x15f0 [ 25.104735] ? follow_page_mask+0x17f0/0x17f0 [ 25.109197] ? vma_link+0xe9/0x170 [ 25.112707] ? lock_acquire+0x1d5/0x580 [ 25.116646] ? lock_acquire+0x1d5/0x580 [ 25.120584] ? __mm_populate+0x2c7/0x450 [ 25.124612] ? lock_release+0xa40/0xa40 [ 25.128552] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.134404] ? rcu_note_context_switch+0x710/0x710 [ 25.139302] populate_vma_page_range+0x20e/0x2f0 [ 25.144024] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 25.148916] ? vmacache_find+0x5f/0x280 [ 25.152865] ? vmacache_update+0xfe/0x130 [ 25.156991] ? find_vma+0x30/0x150 [ 25.160503] __mm_populate+0x23a/0x450 [ 25.164359] ? populate_vma_page_range+0x2f0/0x2f0 [ 25.169255] ? down_read_killable+0x180/0x180 [ 25.173718] ? security_mmap_file+0x143/0x180 [ 25.178187] vm_mmap_pgoff+0x241/0x280 [ 25.182043] ? vma_is_stack_for_current+0xa0/0xa0 [ 25.186852] ? putname+0xee/0x130 [ 25.190272] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.195254] ? kmem_cache_free+0x267/0x2a0 [ 25.199461] SyS_mmap_pgoff+0x462/0x5f0 [ 25.203405] ? find_mergeable_anon_vma+0xd0/0xd0 [ 25.208129] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.213114] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.217842] SyS_mmap+0x16/0x20 [ 25.221090] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 25.225811] RIP: 0033:0x4493c9 [ 25.228977] RSP: 002b:00007f9ada49ad98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 25.236650] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004493c9 [ 25.243887] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 25.251124] RBP: 0000000000000000 R08: 0000000000000008 R09: 0000000000000000 [ 25.258362] R10: 0000000000008011 R11: 0000000000000212 R12: 00000000006dac20 [ 25.265600] R13: 6273752f7665642f R14: 00007f9ada49b9c0 R15: 0000000000000007 [ 25.272842] 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 eb f2 96 fd 48 c7 c6 20 1f d1 85 4c 89 ff e8 8c b4 c0 fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 c7 f2 96 fd [ 25.291912] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c8b97510 [ 25.298430] ---[ end trace dca38bf090033810 ]--- [ 25.303179] Kernel panic - not syncing: Fatal exception [ 25.308544] Dumping ftrace buffer: [ 25.312054] (ftrace buffer empty) [ 25.315732] Kernel Offset: disabled [ 25.319334] Rebooting in 86400 seconds..