[....] Starting enhanced syslogd: rsyslogd[ 16.521047] audit: type=1400 audit(1521167198.190:5): avc: denied { syslog } for pid=4057 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: [ 22.625150] audit: type=1400 audit(1521167204.294:6): avc: denied { map } for pid=4197 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 '10.128.10.2' (ECDSA) to the list of known hosts. executing program executing program [ 28.981443] audit: type=1400 audit(1521167210.651:7): avc: denied { map } for pid=4211 comm="syzkaller117497" path="/root/syzkaller117497471" 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 [ 28.989444] IPVS: ftp: loaded support on port[0] = 21 [ 29.031975] audit: type=1400 audit(1521167210.701:8): avc: denied { map } for pid=4212 comm="syzkaller117497" path="/dev/ashmem" dev="devtmpfs" ino=1080 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=chr_file permissive=1 [ 29.032679] ------------[ cut here ]------------ [ 29.061858] memory commitment underflow [ 29.061909] WARNING: CPU: 0 PID: 4212 at mm/util.c:628 __vm_enough_memory+0x5a6/0x810 [ 29.073784] Kernel panic - not syncing: panic_on_warn set ... [ 29.073784] [ 29.081114] CPU: 0 PID: 4212 Comm: syzkaller117497 Not tainted 4.16.0-rc5+ #355 [ 29.088527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.097850] Call Trace: [ 29.100408] dump_stack+0x194/0x24d [ 29.104010] ? arch_local_irq_restore+0x53/0x53 [ 29.108660] ? vsnprintf+0x1ed/0x1900 [ 29.112439] panic+0x1e4/0x41c [ 29.115604] ? refcount_error_report+0x214/0x214 [ 29.120331] ? show_regs_print_info+0x18/0x18 [ 29.124803] ? __warn+0x1c1/0x200 [ 29.128230] ? __vm_enough_memory+0x5a6/0x810 [ 29.132693] __warn+0x1dc/0x200 [ 29.135943] ? __vm_enough_memory+0x5a6/0x810 [ 29.140412] report_bug+0x1f4/0x2b0 [ 29.144025] fixup_bug.part.11+0x37/0x80 [ 29.148075] do_error_trap+0x2d7/0x3e0 [ 29.151934] ? vprintk_default+0x28/0x30 [ 29.155965] ? math_error+0x400/0x400 [ 29.159738] ? printk+0xaa/0xca [ 29.162988] ? show_regs_print_info+0x18/0x18 [ 29.167461] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.172277] do_invalid_op+0x1b/0x20 [ 29.175962] invalid_op+0x1b/0x40 [ 29.179384] RIP: 0010:__vm_enough_memory+0x5a6/0x810 [ 29.184453] RSP: 0018:ffff8801b6747638 EFLAGS: 00010286 [ 29.189787] RAX: dffffc0000000008 RBX: 1ffff10036ce8ecc RCX: ffffffff815acd3e [ 29.197028] RDX: 0000000000000000 RSI: 1ffff10036ce8e77 RDI: 1ffff10036ce8e4c [ 29.204274] RBP: ffff8801b67477e8 R08: 1ffff10036ce8e0e R09: 0000000000000000 [ 29.211514] R10: 0000000000000003 R11: 0000000000000000 R12: ffff8801b67477c0 [ 29.218755] R13: ffffffff86fba560 R14: fff8000000000000 R15: dffffc0000000000 [ 29.226008] ? vprintk_func+0x5e/0xc0 [ 29.229791] ? __vm_enough_memory+0x5a6/0x810 [ 29.234346] ? vm_commit_limit+0xc0/0xc0 [ 29.238381] ? save_stack+0xa3/0xd0 [ 29.241982] ? save_stack+0x43/0xd0 [ 29.245586] ? cred_has_capability+0x1a0/0x3d0 [ 29.250140] ? selinux_ipv4_output+0x40/0x40 [ 29.254528] ? cap_capable+0x1b5/0x230 [ 29.258394] security_vm_enough_memory_mm+0x90/0xb0 [ 29.263384] __shmem_file_setup+0x29c/0x6a0 [ 29.267684] ? shmem_fill_super+0xa10/0xa10 [ 29.271979] ? __lock_is_held+0xb6/0x140 [ 29.276020] ? mmap_region+0x7ee/0x15a0 [ 29.279980] shmem_file_setup+0x2f/0x40 [ 29.283929] ashmem_mmap+0x2da/0x410 [ 29.287617] mmap_region+0xa99/0x15a0 [ 29.291398] ? SyS_brk+0x6f0/0x6f0 [ 29.294920] ? arch_get_unmapped_area+0x760/0x760 [ 29.299735] ? lock_acquire+0x1d5/0x580 [ 29.303682] ? vm_mmap_pgoff+0x198/0x280 [ 29.307721] ? selinux_mmap_addr+0x1f/0xf0 [ 29.311927] ? security_mmap_addr+0x79/0xa0 [ 29.316223] ? get_unmapped_area+0x265/0x300 [ 29.320606] do_mmap+0x6c0/0xe00 [ 29.323947] ? mmap_region+0x15a0/0x15a0 [ 29.327979] ? vm_mmap_pgoff+0x198/0x280 [ 29.332017] ? down_read_killable+0x180/0x180 [ 29.336490] ? security_mmap_file+0x143/0x180 [ 29.340962] vm_mmap_pgoff+0x1de/0x280 [ 29.344832] ? vma_is_stack_for_current+0xa0/0xa0 [ 29.349656] ? putname+0xf3/0x130 [ 29.353085] SyS_mmap_pgoff+0x462/0x5f0 [ 29.357035] ? find_mergeable_anon_vma+0xd0/0xd0 [ 29.361761] ? security_file_ioctl+0x89/0xb0 [ 29.366141] ? do_syscall_64+0xb7/0x940 [ 29.370088] ? align_vdso_addr+0x60/0x60 [ 29.374122] SyS_mmap+0x16/0x20 [ 29.377374] do_syscall_64+0x281/0x940 [ 29.381231] ? __do_page_fault+0xc90/0xc90 [ 29.385436] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.390164] ? syscall_return_slowpath+0x550/0x550 [ 29.395066] ? syscall_return_slowpath+0x2ac/0x550 [ 29.399965] ? prepare_exit_to_usermode+0x350/0x350 [ 29.404955] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 29.410293] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.415113] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 29.420271] RIP: 0033:0x4406f9 [ 29.423430] RSP: 002b:00007fffbe095358 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 29.431107] RAX: ffffffffffffffda RBX: 6873612f7665642f RCX: 00000000004406f9 [ 29.438348] RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000020447000 [ 29.445588] RBP: 00000000006cb018 R08: 0000000000000004 R09: 0000000000000000 [ 29.452826] R10: 0000000000000013 R11: 0000000000000212 R12: 0000000000401b80 [ 29.460073] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000 [ 29.467881] Dumping ftrace buffer: [ 29.471484] (ftrace buffer empty) [ 29.475164] Kernel Offset: disabled [ 29.478765] Rebooting in 86400 seconds..