[....] Starting enhanced syslogd: rsyslogd[ 11.902067] audit: type=1400 audit(1515712392.250:5): avc: denied { syslog } for pid=3359 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 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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.981326] audit: type=1400 audit(1515712398.329:6): avc: denied { map } for pid=3498 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 '10.128.0.60' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 24.179699] audit: type=1400 audit(1515712404.528:7): avc: denied { map } for pid=3512 comm="syzkaller034859" path="/root/syzkaller034859089" 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 [ 24.267334] audit: type=1400 audit(1515712404.616:8): avc: denied { map } for pid=3512 comm="syzkaller034859" path="/dev/ashmem" dev="devtmpfs" ino=1178 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=chr_file permissive=1 [ 24.268263] ------------[ cut here ]------------ [ 24.268277] memory commitment underflow [ 24.268333] WARNING: CPU: 1 PID: 3512 at mm/util.c:606 __vm_enough_memory+0x5a6/0x810 [ 24.268336] Kernel panic - not syncing: panic_on_warn set ... [ 24.268336] [ 24.268341] CPU: 1 PID: 3512 Comm: syzkaller034859 Not tainted 4.15.0-rc7-mm1+ #53 [ 24.268344] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.268346] Call Trace: [ 24.268355] dump_stack+0x194/0x257 [ 24.268362] ? arch_local_irq_restore+0x53/0x53 [ 24.268372] ? vsnprintf+0x1ed/0x1900 [ 24.268394] panic+0x1e4/0x41c [ 24.268399] ? refcount_error_report+0x214/0x214 [ 24.268404] ? show_regs_print_info+0x18/0x18 [ 24.268415] ? __warn+0x1c1/0x200 [ 24.268423] ? __vm_enough_memory+0x5a6/0x810 [ 24.268428] __warn+0x1dc/0x200 [ 24.268433] ? __vm_enough_memory+0x5a6/0x810 [ 24.268440] report_bug+0x211/0x2d0 [ 24.268450] fixup_bug.part.11+0x37/0x80 [ 24.268455] do_error_trap+0x2d7/0x3e0 [ 24.268464] ? math_error+0x400/0x400 [ 24.268470] ? vprintk_emit+0x3ea/0x590 [ 24.268488] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.268498] do_invalid_op+0x1b/0x20 [ 24.268504] invalid_op+0x22/0x40 [ 24.268508] RIP: 0010:__vm_enough_memory+0x5a6/0x810 [ 24.268511] RSP: 0018:ffff8801bf6d78e0 EFLAGS: 00010282 [ 24.268515] RAX: dffffc0000000008 RBX: 1ffff10037edaf21 RCX: ffffffff815a254e [ 24.268518] RDX: 0000000000000000 RSI: 1ffff10037ead53b RDI: 0000000000000293 [ 24.268521] RBP: ffff8801bf6d7a90 R08: 1ffff10037edaeaf R09: 0000000000000000 [ 24.268523] R10: 0000000000000003 R11: 0000000000000000 R12: ffff8801bf6d7a68 [ 24.268526] R13: ffffffff869b9080 R14: 0000000000000fff R15: dffffc0000000000 [ 24.268538] ? vprintk_func+0x5e/0xc0 [ 24.268553] ? vm_commit_limit+0xc0/0xc0 [ 24.268559] ? lock_release+0xa40/0xa40 [ 24.268573] ? cred_has_capability+0x1a0/0x3d0 [ 24.268581] ? selinux_ipv4_output+0x40/0x40 [ 24.268585] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.268591] ? trace_hardirqs_on+0xd/0x10 [ 24.268607] ? cap_capable+0x1b5/0x230 [ 24.268620] security_vm_enough_memory_mm+0x90/0xb0 [ 24.268629] mmap_region+0x321/0x15a0 [ 24.268641] ? SyS_brk+0x6f0/0x6f0 [ 24.268654] ? arch_get_unmapped_area+0x770/0x770 [ 24.268658] ? lock_acquire+0x1d5/0x580 [ 24.268662] ? lock_acquire+0x1d5/0x580 [ 24.268666] ? vm_mmap_pgoff+0x198/0x280 [ 24.268673] ? selinux_mmap_addr+0x1f/0xf0 [ 24.268679] ? security_mmap_addr+0x79/0xa0 [ 24.268686] ? get_unmapped_area+0x265/0x300 [ 24.268689] ? file_map_prot_check+0x2e0/0x2e0 [ 24.268698] do_mmap+0x73c/0xf70 [ 24.268709] ? mmap_region+0x15a0/0x15a0 [ 24.268712] ? vm_mmap_pgoff+0x198/0x280 [ 24.268718] ? down_read_killable+0x180/0x180 [ 24.268724] ? security_mmap_file+0x143/0x180 [ 24.268733] vm_mmap_pgoff+0x1de/0x280 [ 24.268746] ? vma_is_stack_for_current+0xa0/0xa0 [ 24.268766] SyS_mmap_pgoff+0x23b/0x5f0 [ 24.268775] ? find_mergeable_anon_vma+0xd0/0xd0 [ 24.268780] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.268786] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.268796] SyS_mmap+0x16/0x20 [ 24.268801] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 24.268804] RIP: 0033:0x444a89 [ 24.268806] RSP: 002b:00007fff4790c038 EFLAGS: 00000216 ORIG_RAX: 0000000000000009 [ 24.268811] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000444a89 [ 24.268813] RDX: 0000000000000003 RSI: 0000000000fff000 RDI: 0000000020000000 [ 24.268816] RBP: 7fffffffffffffff R08: 00000000ffffffff R09: 0000000000000000 [ 24.268818] R10: 0000000000000032 R11: 0000000000000216 R12: 6873612f7665642f [ 24.268820] R13: 0000000000401ff0 R14: 0000000000000000 R15: 0000000000000000 [ 24.294553] Dumping ftrace buffer: [ 24.294672] (ftrace buffer empty) [ 24.294675] Kernel Offset: disabled [ 24.649893] Rebooting in 86400 seconds..