DATA RACE in fs.(*UnstableAttr).SetOwner (2)

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
gvisor	DATA RACE in fs.(*UnstableAttr).SetOwner				1	1804d	1804d	0/26	fixed on 2019/12/20 13:42

WARNING: DATA RACE
Write at 0x00c0005ca03c by goroutine 295:
  gvisor.dev/gvisor/pkg/sentry/fs.(*UnstableAttr).SetOwner()
      pkg/sentry/fs/attr.go:254 +0xc9
  gvisor.dev/gvisor/pkg/sentry/fs/fsutil.(*InodeSimpleAttributes).SetOwner()
      pkg/sentry/fs/fsutil/inode.go:139 +0x7d
  gvisor.dev/gvisor/pkg/sentry/fs/tty.(*slaveInodeOperations).SetOwner()
      <autogenerated>:1 +0x79
  gvisor.dev/gvisor/pkg/sentry/fs.(*Inode).SetOwner()
      pkg/sentry/fs/inode.go:341 +0x147
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.chown()
      pkg/sentry/syscalls/linux/sys_file.go:1682 +0x222
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Fchown()
      pkg/sentry/syscalls/linux/sys_file.go:1744 +0x14a
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall()
      pkg/sentry/kernel/task_syscall.go:170 +0x455
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke()
      pkg/sentry/kernel/task_syscall.go:291 +0xb4
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter()
      pkg/sentry/kernel/task_syscall.go:252 +0x109
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall()
      pkg/sentry/kernel/task_syscall.go:227 +0x1b3
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute()
      pkg/sentry/kernel/task_run.go:232 +0x1aaf
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:92 +0x308

Previous read at 0x00c0005ca038 by goroutine 185:
  gvisor.dev/gvisor/pkg/sentry/fs/tty.(*slaveInodeOperations).Truncate()
      <autogenerated>:1 +0x4f
  gvisor.dev/gvisor/pkg/sentry/fs.(*Inode).Truncate()
      pkg/sentry/fs/inode.go:363 +0x187
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.openAt.func1()
      pkg/sentry/syscalls/linux/sys_file.go:178 +0x601
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.fileOpOn()
      pkg/sentry/syscalls/linux/sys_file.go:111 +0x23f
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.openAt()
      pkg/sentry/syscalls/linux/sys_file.go:140 +0x141
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Open()
      pkg/sentry/syscalls/linux/sys_file.go:470 +0xfa
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall()
      pkg/sentry/kernel/task_syscall.go:170 +0x455
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke()
      pkg/sentry/kernel/task_syscall.go:291 +0xb4
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter()
      pkg/sentry/kernel/task_syscall.go:252 +0x109
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall()
      pkg/sentry/kernel/task_syscall.go:227 +0x1b3
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute()
      pkg/sentry/kernel/task_run.go:232 +0x1aaf
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:92 +0x308

Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	Manager
2020/01/25 12:02	https://gvisor.googlesource.com/gvisor master	cb3906ae0057	2e95ab33	.config	console log	report	syz	ci-gvisor-ptrace-proxy-sandbox-race
2020/01/25 11:43	https://gvisor.googlesource.com/gvisor master	cb3906ae0057	2e95ab33	.config	console log	report	syz	ci-gvisor-ptrace-direct-overlay-host-race
2020/01/25 10:41	https://gvisor.googlesource.com/gvisor master	cb3906ae0057	2e95ab33	.config	console log	report		ci-gvisor-ptrace-direct-overlay-host-race