[ 51.710823][ T26] audit: type=1800 audit(1556016556.780:30): pid=7989 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 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: [ 55.506534][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 55.506549][ T26] audit: type=1400 audit(1556016560.610:35): avc: denied { map } for pid=8167 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 '10.128.0.31' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program [ 61.987906][ T26] audit: type=1400 audit(1556016567.090:36): avc: denied { map } for pid=8179 comm="syz-executor795" path="/root/syz-executor795080287" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 62.009266][ T8183] ------------[ cut here ]------------ [ 62.028746][ T8183] memory commitment underflow executing program executing program executing program executing program [ 62.029064][ T8183] WARNING: CPU: 1 PID: 8183 at mm/util.c:657 __vm_enough_memory+0x47b/0x5a0 [ 62.035571][ T26] audit: type=1400 audit(1556016567.100:37): avc: denied { map } for pid=8187 comm="syz-executor795" path="/dev/ashmem" dev="devtmpfs" ino=801 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=chr_file permissive=1 [ 62.042451][ T8183] Kernel panic - not syncing: panic_on_warn set ... [ 62.042469][ T8183] CPU: 1 PID: 8183 Comm: syz-executor795 Not tainted 5.1.0-rc6 #78 executing program executing program executing program [ 62.042476][ T8183] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.042505][ T8183] Call Trace: [ 62.042558][ T8183] dump_stack+0x172/0x1f0 [ 62.042575][ T8183] ? __vm_enough_memory+0x3d0/0x5a0 [ 62.042600][ T8183] panic+0x2cb/0x65c [ 62.042614][ T8183] ? __warn_printk+0xf3/0xf3 [ 62.042631][ T8183] ? __vm_enough_memory+0x47b/0x5a0 [ 62.042651][ T8183] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 62.042673][ T8183] ? __warn.cold+0x5/0x45 [ 62.129746][ T8183] ? __warn+0xe8/0x1d0 [ 62.133836][ T8183] ? __vm_enough_memory+0x47b/0x5a0 [ 62.139058][ T8183] __warn.cold+0x20/0x45 [ 62.143345][ T8183] ? vprintk_emit+0x1ce/0x6d0 [ 62.148042][ T8183] ? __vm_enough_memory+0x47b/0x5a0 [ 62.153267][ T8183] report_bug+0x263/0x2b0 [ 62.157655][ T8183] do_error_trap+0x11b/0x200 [ 62.162276][ T8183] do_invalid_op+0x37/0x50 [ 62.166716][ T8183] ? __vm_enough_memory+0x47b/0x5a0 [ 62.171976][ T8183] invalid_op+0x14/0x20 [ 62.176337][ T8183] RIP: 0010:__vm_enough_memory+0x47b/0x5a0 [ 62.182160][ T8183] Code: e8 aa 79 da ff 0f b6 75 d0 40 84 f6 0f 85 50 fc ff ff e8 58 78 da ff 48 c7 c7 60 7c 72 87 c6 05 2f 73 c4 07 01 e8 03 26 ad ff <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 14 [ 62.201887][ T8183] RSP: 0018:ffff8880969a7b10 EFLAGS: 00010286 [ 62.207981][ T8183] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 62.215979][ T8183] RDX: 0000000000000000 RSI: ffffffff815afcf6 RDI: ffffed1012d34f54 [ 62.223981][ T8183] RBP: ffff8880969a7b48 R08: ffff88808f5a23c0 R09: ffff88808f5a2cb0 [ 62.232070][ T8183] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 62.240060][ T8183] R13: ffff888093a5d780 R14: ffffffff88a2a580 R15: 0000000000000c67 [ 62.248068][ T8183] ? vprintk_func+0x86/0x189 [ 62.252722][ T8183] security_vm_enough_memory_mm+0xa0/0xd0 [ 62.258471][ T8183] copy_process.part.0+0x3411/0x7980 [ 62.263939][ T8183] ? __cleanup_sighand+0x60/0x60 [ 62.268910][ T8183] ? task_stopped_code+0x180/0x180 [ 62.274072][ T8183] _do_fork+0x257/0xfd0 [ 62.278254][ T8183] ? fork_idle+0x1d0/0x1d0 [ 62.282712][ T8183] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 62.288216][ T8183] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 62.293703][ T8183] ? do_syscall_64+0x26/0x610 [ 62.298398][ T8183] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 62.304488][ T8183] ? do_syscall_64+0x26/0x610 [ 62.309200][ T8183] __x64_sys_clone+0xbf/0x150 [ 62.313996][ T8183] do_syscall_64+0x103/0x610 [ 62.318624][ T8183] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 62.324539][ T8183] RIP: 0033:0x43fc4a [ 62.328446][ T8183] Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 [ 62.348060][ T8183] RSP: 002b:00007ffd71b3f810 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 62.356676][ T8183] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043fc4a [ 62.364668][ T8183] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 62.372653][ T8183] RBP: 00007ffd71b3f830 R08: 0000000000001ff7 R09: 0000000000a11880 [ 62.380642][ T8183] R10: 0000000000a11b50 R11: 0000000000000246 R12: 0000000000001ff7 [ 62.388708][ T8183] R13: 0000000000402090 R14: 0000000000000000 R15: 0000000000000000 [ 62.397924][ T8183] Kernel Offset: disabled [ 62.402370][ T8183] Rebooting in 86400 seconds..