[....] Starting enhanced syslogd: rsyslogd[ 10.400359] audit: type=1400 audit(1514314596.572:5): avc: denied { syslog } for pid=2991 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 16.096171] audit: type=1400 audit(1514314602.267:6): avc: denied { map } for pid=3132 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 Warning: Permanently added 'ci-upstream-next-kasan-gce-3,10.128.0.60' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 38.200119] audit: type=1400 audit(1514314624.371:7): avc: denied { map } for pid=3150 comm="syzkaller039702" path="/root/syzkaller039702230" 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 [ 38.226297] audit: type=1400 audit(1514314624.375:8): avc: denied { map } for pid=3150 comm="syzkaller039702" path="/dev/usbmon0" dev="devtmpfs" ino=8885 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 executing program [ 38.278836] page:0000000027b87ed0 count:0 mapcount:0 mapping: (null) index:0x0 [ 38.287118] flags: 0x2fffc0000000000() [ 38.291027] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 38.298908] raw: ffffea000727fc20 ffffea000726d1a0 0000000000000000 0000000000000000 [ 38.306809] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 38.313897] ------------[ cut here ]------------ [ 38.318620] kernel BUG at ./include/linux/mm.h:844! [ 38.323649] invalid opcode: 0000 [#1] SMP KASAN [ 38.328289] Dumping ftrace buffer: [ 38.331794] (ftrace buffer empty) [ 38.335468] Modules linked in: [ 38.338629] CPU: 0 PID: 3151 Comm: syzkaller039702 Not tainted 4.15.0-rc4-next-20171221+ #78 [ 38.347174] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.356502] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 38.361479] RSP: 0018:ffff8801c8fef510 EFLAGS: 00010203 [ 38.366805] RAX: 0000000000000000 RBX: 1ffff100391fdea4 RCX: 0000000000000000 [ 38.374043] RDX: 0000000000000000 RSI: 1ffff100391fddee RDI: ffffed00391fde90 [ 38.381277] RBP: ffff8801c8fef5e8 R08: 1ffff100391fddb0 R09: 0000000000000000 [ 38.388513] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff100391fdea8 [ 38.395747] R13: dffffc0000000000 R14: ffff8801c8fef840 R15: ffffea000726d1c0 [ 38.402983] FS: 00007f04cb5f3700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 38.411172] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.417018] CR2: 00000000208be000 CR3: 00000001d9172004 CR4: 00000000001606f0 [ 38.424253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.431491] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.438724] Call Trace: [ 38.441280] ? mon_alloc_buff+0x1a0/0x1a0 [ 38.445391] ? find_held_lock+0x35/0x1d0 [ 38.449424] __do_fault+0xeb/0x30f [ 38.452928] ? vma_gap_callbacks_rotate+0x62/0x80 [ 38.457736] ? pte_offset_kernel+0xc7/0xc7 [ 38.463238] ? print_irqtrace_events+0x270/0x270 [ 38.469520] ? rb_insert_color_cached+0x1660/0x1660 [ 38.475458] ? vma_compute_subtree_gap+0x200/0x200 [ 38.480352] ? rb_insert_color_cached+0x1660/0x1660 [ 38.485331] ? check_noncircular+0x20/0x20 [ 38.489532] __handle_mm_fault+0x1d8f/0x3ce0 [ 38.493906] ? __pmd_alloc+0x4e0/0x4e0 [ 38.497772] ? find_held_lock+0x35/0x1d0 [ 38.501802] ? handle_mm_fault+0x2a0/0x930 [ 38.506000] ? lock_downgrade+0x980/0x980 [ 38.510123] handle_mm_fault+0x38f/0x930 [ 38.514151] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 38.518958] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 38.524819] ? find_vma+0x30/0x150 [ 38.528326] __get_user_pages+0x50c/0x15f0 [ 38.532531] ? follow_page_mask+0x17f0/0x17f0 [ 38.536993] ? vma_link+0xe9/0x170 [ 38.540499] ? lock_acquire+0x1d5/0x580 [ 38.544438] ? lock_acquire+0x1d5/0x580 [ 38.548377] ? __mm_populate+0x2c7/0x450 [ 38.552412] ? lock_release+0xa40/0xa40 [ 38.556350] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 38.562200] ? rcu_note_context_switch+0x710/0x710 [ 38.567099] populate_vma_page_range+0x20e/0x2f0 [ 38.571821] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 38.576715] ? vmacache_find+0x5f/0x280 [ 38.580654] ? vmacache_update+0xfe/0x130 [ 38.584767] ? find_vma+0x30/0x150 [ 38.588279] __mm_populate+0x23a/0x450 [ 38.592134] ? populate_vma_page_range+0x2f0/0x2f0 [ 38.597042] ? down_read_killable+0x180/0x180 [ 38.601501] ? security_mmap_file+0x143/0x180 [ 38.605969] vm_mmap_pgoff+0x241/0x280 [ 38.609823] ? vma_is_stack_for_current+0xa0/0xa0 [ 38.614629] ? putname+0xee/0x130 [ 38.618061] ? rcu_read_lock_sched_held+0x108/0x120 [ 38.623040] ? kmem_cache_free+0x267/0x2a0 [ 38.627250] SyS_mmap_pgoff+0x462/0x5f0 [ 38.631190] ? find_mergeable_anon_vma+0xd0/0xd0 [ 38.635909] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 38.640892] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 38.645617] SyS_mmap+0x16/0x20 [ 38.648862] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 38.653580] RIP: 0033:0x449339 [ 38.656734] RSP: 002b:00007f04cb5f2d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 38.665976] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449339 [ 38.673212] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 38.680451] RBP: 00000000006dac20 R08: 0000000000000042 R09: 0000000000000000 [ 38.687696] R10: 0000000000008011 R11: 0000000000000212 R12: 747865746e6f632f [ 38.694934] R13: 78756e696c65732f R14: 6273752f7665642f R15: 0000000000000009 [ 38.702176] 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 [ 38.721589] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c8fef510 [ 38.728108] ---[ end trace 42a6c0c94cd96091 ]--- [ 38.732991] Kernel panic - not syncing: Fatal exception [ 38.738981] Dumping ftrace buffer: [ 38.742486] (ftrace buffer empty) [ 38.746160] Kernel Offset: disabled [ 38.749753] Rebooting in 86400 seconds..