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authorYong He <chenglang.hy@antfin.com>2019-04-10 14:16:36 -0700
committerShentubot <shentubot@google.com>2019-04-10 14:17:33 -0700
commit89cc8eef9ba6440a5f1772bb2cd200da9b4890d9 (patch)
treef7c226a88c5fb88bab953c199176ccec6edbd07c /test/syscalls/linux/unlink.cc
parentf7aff0aaa4320505933df838cf5b551b69d5e513 (diff)
DATA RACE in fs.(*Dirent).fullName
add renameMu.Lock when oldParent == newParent in order to avoid data race in following report: WARNING: DATA RACE Read at 0x00c000ba2160 by goroutine 405: gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*Dirent).fullName() pkg/sentry/fs/dirent.go:246 +0x6c gvisor.googlesource.com/gvisor/pkg/sentry/fs.(*Dirent).FullName() pkg/sentry/fs/dirent.go:356 +0x8b gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*FDMap).String() pkg/sentry/kernel/fd_map.go:135 +0x1e0 fmt.(*pp).handleMethods() GOROOT/src/fmt/print.go:603 +0x404 fmt.(*pp).printArg() GOROOT/src/fmt/print.go:686 +0x255 fmt.(*pp).doPrintf() GOROOT/src/fmt/print.go:1003 +0x33f fmt.Fprintf() GOROOT/src/fmt/print.go:188 +0x7f gvisor.googlesource.com/gvisor/pkg/log.(*Writer).Emit() pkg/log/log.go:121 +0x89 gvisor.googlesource.com/gvisor/pkg/log.GoogleEmitter.Emit() pkg/log/glog.go:162 +0x1acc gvisor.googlesource.com/gvisor/pkg/log.(*GoogleEmitter).Emit() <autogenerated>:1 +0xe1 gvisor.googlesource.com/gvisor/pkg/log.(*BasicLogger).Debugf() pkg/log/log.go:177 +0x111 gvisor.googlesource.com/gvisor/pkg/log.Debugf() pkg/log/log.go:235 +0x66 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Debugf() pkg/sentry/kernel/task_log.go:48 +0xfe gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).DebugDumpState() pkg/sentry/kernel/task_log.go:66 +0x11f gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:272 +0xc80 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:91 +0x24b Previous write at 0x00c000ba2160 by goroutine 423: gvisor.googlesource.com/gvisor/pkg/sentry/fs.Rename() pkg/sentry/fs/dirent.go:1628 +0x61f gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.renameAt.func1.1() pkg/sentry/syscalls/linux/sys_file.go:1864 +0x1f8 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpAt( gvisor.googlesource.com/g/linux/sys_file.go:51 +0x20f gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.renameAt.func1() pkg/sentry/syscalls/linux/sys_file.go:1852 +0x218 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.fileOpAt() pkg/sentry/syscalls/linux/sys_file.go:51 +0x20f gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.renameAt() pkg/sentry/syscalls/linux/sys_file.go:1840 +0x180 gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Rename() pkg/sentry/syscalls/linux/sys_file.go:1873 +0x60 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall() pkg/sentry/kernel/task_syscall.go:165 +0x17a gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke() pkg/sentry/kernel/task_syscall.go:283 +0xb4 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter() pkg/sentry/kernel/task_syscall.go:244 +0x10c gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall() pkg/sentry/kernel/task_syscall.go:219 +0x1e3 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:215 +0x15a9 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:91 +0x24b Reported-by: syzbot+e1babbf756fab380dfff@syzkaller.appspotmail.com Change-Id: Icd2620bb3ea28b817bf0672d454a22b9d8ee189a PiperOrigin-RevId: 242938741
Diffstat (limited to 'test/syscalls/linux/unlink.cc')
0 files changed, 0 insertions, 0 deletions