I0821 12:10:01.965573 12420 x:0] Watchdog starting loop, tasks: 14, discount: 0s I0821 12:10:46.966895 12420 x:0] Watchdog starting loop, tasks: 14, discount: 0s I0821 12:11:31.969993 12420 x:0] Watchdog starting loop, tasks: 16, discount: 0s I0821 12:12:16.971404 12420 x:0] Watchdog starting loop, tasks: 16, discount: 0s I0821 12:13:01.197078 17132 x:0] *************************** I0821 12:13:01.197698 17132 x:0] Args: [/syzkaller/managers/kvm-direct-overlay-host-race/current/image -root /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root -watchdog-action=panic -network=none -platform=ptrace -file-access=direct -overlay -network=host exec -user=0:0 -cap CAP_CHOWN -cap CAP_DAC_OVERRIDE -cap CAP_DAC_READ_SEARCH -cap CAP_FOWNER -cap CAP_FSETID -cap CAP_KILL -cap CAP_SETGID -cap CAP_SETUID -cap CAP_SETPCAP -cap CAP_LINUX_IMMUTABLE -cap CAP_NET_BIND_SERVICE -cap CAP_NET_BROADCAST -cap CAP_NET_ADMIN -cap CAP_NET_RAW -cap CAP_IPC_LOCK -cap CAP_IPC_OWNER -cap CAP_SYS_MODULE -cap CAP_SYS_RAWIO -cap CAP_SYS_CHROOT -cap CAP_SYS_PTRACE -cap CAP_SYS_PACCT -cap CAP_SYS_ADMIN -cap CAP_SYS_BOOT -cap CAP_SYS_NICE -cap CAP_SYS_RESOURCE -cap CAP_SYS_TIME -cap CAP_SYS_TTY_CONFIG -cap CAP_MKNOD -cap CAP_LEASE -cap CAP_AUDIT_WRITE -cap CAP_AUDIT_CONTROL -cap CAP_SETFCAP -cap CAP_MAC_OVERRIDE -cap CAP_MAC_ADMIN -cap CAP_SYSLOG -cap CAP_WAKE_ALARM -cap CAP_BLOCK_SUSPEND -cap CAP_AUDIT_READ ci-gvisor-kvm-direct-overlay-host-race-3 /syz-execprog -executor=/syz-executor -arch=amd64 -sandbox=none -procs=1 -repeat=0 -threaded=true -collide=true -cover=0 -fault_call=-1 -fault_nth=-1 /syzkaller195986767] I0821 12:13:01.198017 17132 x:0] Git Revision: d4d5ed1d9def507b1f2ff3ff8ec75813e931f129 I0821 12:13:01.198049 17132 x:0] PID: 17132 I0821 12:13:01.198071 17132 x:0] UID: 0, GID: 0 I0821 12:13:01.198088 17132 x:0] Configuration: I0821 12:13:01.198141 17132 x:0] RootDir: /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root I0821 12:13:01.198161 17132 x:0] Platform: ptrace I0821 12:13:01.198187 17132 x:0] FileAccess: direct, overlay: true I0821 12:13:01.198246 17132 x:0] Network: host, logging: false I0821 12:13:01.198275 17132 x:0] Strace: false, max size: 1024, syscalls: [] I0821 12:13:01.198301 17132 x:0] *************************** I0821 12:13:01.204555 12420 x:0] EXEC: [/syz-execprog -executor=/syz-executor -arch=amd64 -sandbox=none -procs=1 -repeat=0 -threaded=true -collide=true -cover=0 -fault_call=-1 -fault_nth=-1 /syzkaller195986767] I0821 12:13:01.975639 12420 x:0] Watchdog starting loop, tasks: 48, discount: 0s 2018/08/21 12:13:02 parsed 1 programs 2018/08/21 12:13:02 executed programs: 0 2018/08/21 12:13:07 executed programs: 6 2018/08/21 12:13:13 executed programs: 12 2018/08/21 12:13:18 executed programs: 18 2018/08/21 12:13:23 executed programs: 24 2018/08/21 12:13:28 executed programs: 30 2018/08/21 12:13:34 executed programs: 36 2018/08/21 12:13:39 executed programs: 42 2018/08/21 12:13:45 executed programs: 48 I0821 12:13:46.988729 12420 x:0] Watchdog starting loop, tasks: 66, discount: 0s 2018/08/21 12:13:50 executed programs: 54 2018/08/21 12:13:55 executed programs: 60 2018/08/21 12:14:00 executed programs: 66 2018/08/21 12:14:05 executed programs: 72 2018/08/21 12:14:10 executed programs: 78 2018/08/21 12:14:16 executed programs: 84 2018/08/21 12:14:21 executed programs: 90 ================== WARNING: DATA RACE Write at 0x00c4204054a0 by goroutine 276: runtime.mapassign_faststr() GOROOT/src/runtime/hashmap_fast.go:694 +0x0 gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*Dirent).hashChildParentSet() pkg/sentry/fs/dirent.go:301 +0x176 gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*Dirent).hashChild() pkg/sentry/fs/dirent.go:286 +0xda gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*Dirent).walk() pkg/sentry/fs/dirent.go:592 +0x537 gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*Dirent).Walk() pkg/sentry/fs/dirent.go:617 +0xd5 gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*MountNamespace).FindLink() pkg/sentry/fs/mounts.go:401 +0x202 gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*MountNamespace).FindInode() pkg/sentry/fs/mounts.go:439 +0x93 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.mkdirAt.func1() pkg/sentry/syscalls/linux/sys_file.go:995 +0x1a2 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpAt.func1() pkg/sentry/syscalls/linux/sys_file.go:58 +0x66 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpOn() pkg/sentry/syscalls/linux/sys_file.go:111 +0x235 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpAt() pkg/sentry/syscalls/linux/sys_file.go:57 +0x17e gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.mkdirAt() pkg/sentry/syscalls/linux/sys_file.go:989 +0x162 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Mkdir() pkg/sentry/syscalls/linux/sys_file.go:1022 +0x58 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall() pkg/sentry/kernel/task_syscall.go:162 +0x14e gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke() pkg/sentry/kernel/task_syscall.go:280 +0x7d gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter() pkg/sentry/kernel/task_syscall.go:241 +0xc3 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall() pkg/sentry/kernel/task_syscall.go:216 +0x19e gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:219 +0x1501 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:95 +0x264 Previous read at 0x00c4204054a0 by goroutine 315: runtime.mapiterinit() GOROOT/src/runtime/hashmap.go:691 +0x0 gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*Dirent).flush() pkg/sentry/fs/dirent.go:1018 +0x12d gvisor.googlesource.com/gvisor/pkg/sentry/fs.Rename() pkg/sentry/fs/dirent.go:1589 +0xc24 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.renameAt.func1.1() pkg/sentry/syscalls/linux/sys_file.go:1831 +0x18d gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpAt.func1() pkg/sentry/syscalls/linux/sys_file.go:58 +0x66 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpOn() pkg/sentry/syscalls/linux/sys_file.go:111 +0x235 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpAt() pkg/sentry/syscalls/linux/sys_file.go:57 +0x17e gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.renameAt.func1() pkg/sentry/syscalls/linux/sys_file.go:1820 +0x20a gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpAt.func1() pkg/sentry/syscalls/linux/sys_file.go:58 +0x66 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpOn() pkg/sentry/syscalls/linux/sys_file.go:111 +0x235 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpAt() pkg/sentry/syscalls/linux/sys_file.go:57 +0x17e gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.renameAt() pkg/sentry/syscalls/linux/sys_file.go:1805 +0x1ef gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Rename() pkg/sentry/syscalls/linux/sys_file.go:1840 +0x60 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall() pkg/sentry/kernel/task_syscall.go:162 +0x14e gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke() pkg/sentry/kernel/task_syscall.go:280 +0x7d gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter() pkg/sentry/kernel/task_syscall.go:241 +0xc3 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall() pkg/sentry/kernel/task_syscall.go:216 +0x19e gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:219 +0x1501 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:95 +0x264 Goroutine 276 (running) created at: gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start() pkg/sentry/kernel/task_start.go:258 +0x193 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Clone() pkg/sentry/kernel/task_clone.go:319 +0x10f1 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.clone() pkg/sentry/syscalls/linux/sys_thread.go:157 +0x22e gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Clone() pkg/sentry/syscalls/linux/sys_thread.go:171 +0x80 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall() pkg/sentry/kernel/task_syscall.go:162 +0x14e gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke() pkg/sentry/kernel/task_syscall.go:280 +0x7d gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter() pkg/sentry/kernel/task_syscall.go:241 +0xc3 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall() pkg/sentry/kernel/task_syscall.go:216 +0x19e gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:219 +0x1501 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:95 +0x264 Goroutine 315 (running) created at: gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start() pkg/sentry/kernel/task_start.go:258 +0x193 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Clone() pkg/sentry/kernel/task_clone.go:319 +0x10f1 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.clone() pkg/sentry/syscalls/linux/sys_thread.go:157 +0x22e gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Clone() pkg/sentry/syscalls/linux/sys_thread.go:171 +0x80 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall() pkg/sentry/kernel/task_syscall.go:162 +0x14e gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke() pkg/sentry/kernel/task_syscall.go:280 +0x7d gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter() pkg/sentry/kernel/task_syscall.go:241 +0xc3 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall() pkg/sentry/kernel/task_syscall.go:216 +0x19e gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:219 +0x1501 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:95 +0x264 ================== 2018/08/21 12:14:26 executed programs: 96 2018/08/21 12:14:31 executed programs: 102 I0821 12:14:31.989496 12420 x:0] Watchdog starting loop, tasks: 66, discount: 0s