I0806 01:45:15.323600 62373 x:0] Watchdog starting loop, tasks: 8, discount: 0s I0806 01:45:46.457455 513 x:0] *************************** I0806 01:45:46.457691 513 x:0] Args: [/syzkaller/managers/ptrace-proxy-sandbox-race/current/image -root /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root -watchdog-action=panic -network=none -platform=ptrace -file-access=proxy -network=sandbox 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-ptrace-proxy-sandbox-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 /syzkaller129551513] I0806 01:45:46.458096 513 x:0] Git Revision: 72627b310e89405fb0215d773405d73f305de993 I0806 01:45:46.458193 513 x:0] PID: 513 I0806 01:45:46.458302 513 x:0] UID: 0, GID: 0 I0806 01:45:46.458409 513 x:0] Configuration: I0806 01:45:46.458496 513 x:0] RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root I0806 01:45:46.458567 513 x:0] Platform: ptrace I0806 01:45:46.458663 513 x:0] FileAccess: proxy, overlay: false I0806 01:45:46.458748 513 x:0] Network: sandbox, logging: false I0806 01:45:46.458818 513 x:0] Strace: false, max size: 1024, syscalls: [] I0806 01:45:46.458928 513 x:0] *************************** I0806 01:45:46.471936 62373 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 /syzkaller129551513] 2018/08/06 01:45:49 parsed 1 programs 2018/08/06 01:45:49 executed programs: 0 ================== WARNING: DATA RACE Write at 0x00c420629744 by goroutine 215: gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).setKUIDsUncheckedLocked() pkg/sentry/kernel/task_identity.go:165 +0x1b8 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).SetRESUID() pkg/sentry/kernel/task_identity.go:157 +0x16d gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Setresuid() pkg/sentry/syscalls/linux/sys_identity.go:117 +0x57 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:278 +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 +0x19c gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:217 +0x1501 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:95 +0x264 Previous read at 0x00c420629744 by goroutine 262: gvisor.googlesource.com/gvisor/pkg/sentry/fs.FileOwnerFromContext() pkg/sentry/fs/context.go:86 +0x5d gvisor.googlesource.com/gvisor/pkg/sentry/fs/proc.(*file).UnstableAttr() pkg/sentry/fs/proc/file.go:53 +0x1e5 gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*Inode).UnstableAttr() pkg/sentry/fs/inode.go:250 +0x217 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.stat() pkg/sentry/syscalls/linux/sys_stat.go:106 +0x9d gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Fstat() pkg/sentry/syscalls/linux/sys_stat.go:98 +0x108 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:278 +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 +0x19c gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:217 +0x1501 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:95 +0x264 Goroutine 215 (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:316 +0x110a 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:278 +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 +0x19c gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:217 +0x1501 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:95 +0x264 Goroutine 262 (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:316 +0x110a 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:278 +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 +0x19c gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:217 +0x1501 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:95 +0x264 ================== W0806 01:45:52.593063 62362 x:0] FATAL ERROR: error running container: error waiting on container "ci-gvisor-ptrace-proxy-sandbox-race-2": EOF error running container: error waiting on container "ci-gvisor-ptrace-proxy-sandbox-race-2": EOF W0806 01:45:52.593063 513 x:0] FATAL ERROR: error getting processes for container: error executing in sandbox: EOF error getting processes for container: error executing in sandbox: EOF