I0822 07:43:00.436535 23760 x:0] CalibratedClock(Monotonic): ready I0822 07:43:00.436776 23760 x:0] CalibratedClock(Realtime): ready I0822 07:43:44.532487 23760 x:0] Watchdog starting loop, tasks: 13, discount: 0s I0822 07:44:29.532938 23760 x:0] Watchdog starting loop, tasks: 13, discount: 0s I0822 07:45:14.533578 23760 x:0] Watchdog starting loop, tasks: 15, discount: 0s I0822 07:45:59.534024 23760 x:0] Watchdog starting loop, tasks: 15, discount: 0s I0822 07:46:43.595955 31937 x:0] *************************** I0822 07:46:43.596218 31937 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-2 /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 /syzkaller837245322] I0822 07:46:43.596614 31937 x:0] Git Revision: d4d5ed1d9def507b1f2ff3ff8ec75813e931f129 I0822 07:46:43.596713 31937 x:0] PID: 31937 I0822 07:46:43.596756 31937 x:0] UID: 0, GID: 0 I0822 07:46:43.596786 31937 x:0] Configuration: I0822 07:46:43.596828 31937 x:0] RootDir: /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root I0822 07:46:43.596873 31937 x:0] Platform: ptrace I0822 07:46:43.596938 31937 x:0] FileAccess: direct, overlay: true I0822 07:46:43.597022 31937 x:0] Network: host, logging: false I0822 07:46:43.597094 31937 x:0] Strace: false, max size: 1024, syscalls: [] I0822 07:46:43.597157 31937 x:0] *************************** I0822 07:46:43.604045 23760 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 /syzkaller837245322] I0822 07:46:44.534378 23760 x:0] Watchdog starting loop, tasks: 44, discount: 0s 2018/08/22 07:46:44 parsed 1 programs 2018/08/22 07:46:45 executed programs: 0 2018/08/22 07:46:50 executed programs: 6 2018/08/22 07:46:56 executed programs: 12 ================== WARNING: DATA RACE Write at 0x00c420132540 by goroutine 15: 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 0x00c420132540 by goroutine 259: 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 15 (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 259 (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 ================== 2018/08/22 07:47:01 executed programs: 18 2018/08/22 07:47:07 executed programs: 24