[....] Starting enhanced syslogd: rsyslogd[ 11.140284] audit: type=1400 audit(1514271187.092:5): avc: denied { syslog } for pid=3000 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 file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 15.849486] audit: type=1400 audit(1514271191.801:6): avc: denied { map } for pid=3139 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-mmots-kasan-gce-9,10.128.15.212' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 22.018680] audit: type=1400 audit(1514271197.970:7): avc: denied { map } for pid=3153 comm="syzkaller709888" path="/root/syzkaller709888152" 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 [ 22.044815] audit: type=1400 audit(1514271197.970:8): avc: denied { map } for pid=3154 comm="syzkaller709888" path="/dev/usbmon0" dev="devtmpfs" ino=1118 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 [ 22.077219] page:ffffea0007215880 count:0 mapcount:0 mapping: (null) index:0x0 [ 22.085438] flags: 0x2fffc0000000000() [ 22.089494] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 22.097387] raw: ffffea000721d7a0 ffffea0007216460 0000000000000000 0000000000000000 [ 22.105272] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 22.112379] ------------[ cut here ]------------ [ 22.117108] kernel BUG at ./include/linux/mm.h:844! [ 22.122133] invalid opcode: 0000 [#1] SMP KASAN [ 22.126775] Dumping ftrace buffer: [ 22.130291] (ftrace buffer empty) [ 22.133968] Modules linked in: [ 22.137132] CPU: 0 PID: 3155 Comm: syzkaller709888 Not tainted 4.15.0-rc4-mm1+ #49 [ 22.144801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.154130] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 22.159109] RSP: 0018:ffff8801c87a7510 EFLAGS: 00010203 [ 22.164438] RAX: 0000000000000000 RBX: 1ffff100390f4ea4 RCX: 0000000000000000 [ 22.171681] RDX: 0000000000000000 RSI: 1ffff100390f4dee RDI: ffffed00390f4e90 [ 22.178916] RBP: ffff8801c87a75e8 R08: 1ffff100390f4db0 R09: 0000000000000000 [ 22.186151] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff100390f4ea8 [ 22.193386] R13: dffffc0000000000 R14: ffff8801c87a7840 R15: ffffea0007215880 [ 22.200624] FS: 00007f7423542700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 22.208818] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.214673] CR2: 0000000020403fb0 CR3: 00000001c9b23002 CR4: 00000000001606f0 [ 22.221911] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.229147] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.236381] Call Trace: [ 22.238942] ? mon_alloc_buff+0x1a0/0x1a0 [ 22.243059] ? find_held_lock+0x35/0x1d0 [ 22.247104] __do_fault+0xeb/0x30f [ 22.250621] ? pte_offset_kernel+0xc7/0xc7 [ 22.254821] ? print_irqtrace_events+0x270/0x270 [ 22.259541] ? rb_insert_color_cached+0x1660/0x1660 [ 22.264525] ? rb_insert_color_cached+0x1660/0x1660 [ 22.269506] ? check_noncircular+0x20/0x20 [ 22.273710] __handle_mm_fault+0x1d8f/0x3ce0 [ 22.278088] ? __pmd_alloc+0x4e0/0x4e0 [ 22.281948] ? find_held_lock+0x35/0x1d0 [ 22.285980] ? handle_mm_fault+0x2a0/0x930 [ 22.290180] ? lock_downgrade+0x980/0x980 [ 22.294308] handle_mm_fault+0x38f/0x930 [ 22.298335] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 22.302885] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 22.308742] ? find_vma+0x30/0x150 [ 22.312251] __get_user_pages+0x50c/0x15f0 [ 22.316458] ? follow_page_mask+0x17f0/0x17f0 [ 22.320917] ? vma_link+0xe9/0x170 [ 22.324426] ? lock_acquire+0x1d5/0x580 [ 22.328364] ? lock_acquire+0x1d5/0x580 [ 22.332302] ? __mm_populate+0x2c7/0x450 [ 22.336333] ? lock_release+0xa40/0xa40 [ 22.340278] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 22.346132] ? rcu_note_context_switch+0x710/0x710 [ 22.351032] populate_vma_page_range+0x20e/0x2f0 [ 22.355755] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 22.360648] ? vmacache_find+0x5f/0x280 [ 22.364586] ? vmacache_update+0xfe/0x130 [ 22.368700] ? find_vma+0x30/0x150 [ 22.372209] __mm_populate+0x23a/0x450 [ 22.376066] ? populate_vma_page_range+0x2f0/0x2f0 [ 22.380960] ? down_read_killable+0x180/0x180 [ 22.385421] ? security_mmap_file+0x143/0x180 [ 22.389906] vm_mmap_pgoff+0x241/0x280 [ 22.393771] ? vma_is_stack_for_current+0xa0/0xa0 [ 22.398582] ? ___sys_recvmsg+0x640/0x640 [ 22.402698] ? selinux_capable+0x40/0x40 [ 22.406727] SyS_mmap_pgoff+0x462/0x5f0 [ 22.410670] ? find_mergeable_anon_vma+0xd0/0xd0 [ 22.415391] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 22.420375] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 22.425102] SyS_mmap+0x16/0x20 [ 22.428346] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 22.433069] RIP: 0033:0x449d79 [ 22.436224] RSP: 002b:00007f7423541cd8 EFLAGS: 00000216 ORIG_RAX: 0000000000000009 [ 22.443898] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000449d79 [ 22.451137] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 22.458373] RBP: 00000000006dbc20 R08: 0000000000000011 R09: 0000000000000000 [ 22.465617] R10: 0000000000008011 R11: 0000000000000216 R12: 0000000000000000 [ 22.472857] R13: 00007ffc59b7f9bf R14: 00007f74235429c0 R15: 0000000000000009 [ 22.480110] 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 [ 22.499184] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c87a7510 [ 22.505726] ---[ end trace 3a762dd55abdea53 ]--- [ 22.510479] Kernel panic - not syncing: Fatal exception [ 22.516244] Dumping ftrace buffer: [ 22.519756] (ftrace buffer empty) [ 22.523431] Kernel Offset: disabled [ 22.527031] Rebooting in 86400 seconds..