Fix hanging of all threads when trying to access an inaccessible NFS server.
Also mask some macros in comments.
This commit is contained in:
Charalampos Stratakis
parent
3bebf16e16
commit
cf221a53b1
135
00287-fix-thread-hanging-on-inaccessible-nfs-server.patch
Normal file
135
00287-fix-thread-hanging-on-inaccessible-nfs-server.patch
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@ -0,0 +1,135 @@
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diff --git a/Modules/_io/fileio.c b/Modules/_io/fileio.c
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index 4a71a57ec0d..2b40ada195a 100644
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--- a/Modules/_io/fileio.c
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+++ b/Modules/_io/fileio.c
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@@ -146,9 +146,15 @@ dircheck(fileio* self, PyObject *nameobj)
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{
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#if defined(HAVE_FSTAT) && defined(S_IFDIR) && defined(EISDIR)
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struct stat buf;
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+ int res;
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if (self->fd < 0)
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return 0;
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- if (fstat(self->fd, &buf) == 0 && S_ISDIR(buf.st_mode)) {
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+
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+ Py_BEGIN_ALLOW_THREADS
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+ res = fstat(self->fd, &buf);
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+ Py_END_ALLOW_THREADS
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+
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+ if (res == 0 && S_ISDIR(buf.st_mode)) {
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errno = EISDIR;
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PyErr_SetFromErrnoWithFilenameObject(PyExc_IOError, nameobj);
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return -1;
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@@ -162,17 +168,34 @@ check_fd(int fd)
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{
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#if defined(HAVE_FSTAT)
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struct stat buf;
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- if (!_PyVerify_fd(fd) || (fstat(fd, &buf) < 0 && errno == EBADF)) {
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- PyObject *exc;
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- char *msg = strerror(EBADF);
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- exc = PyObject_CallFunction(PyExc_OSError, "(is)",
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- EBADF, msg);
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- PyErr_SetObject(PyExc_OSError, exc);
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- Py_XDECREF(exc);
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- return -1;
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+ int res;
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+ PyObject *exc;
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+ char *msg;
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+
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+ if (!_PyVerify_fd(fd)) {
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+ goto badfd;
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}
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-#endif
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+
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+ Py_BEGIN_ALLOW_THREADS
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+ res = fstat(fd, &buf);
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+ Py_END_ALLOW_THREADS
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+
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+ if (res < 0 && errno == EBADF) {
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+ goto badfd;
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+ }
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+
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return 0;
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+
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+badfd:
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+ msg = strerror(EBADF);
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+ exc = PyObject_CallFunction(PyExc_OSError, "(is)",
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+ EBADF, msg);
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+ PyErr_SetObject(PyExc_OSError, exc);
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+ Py_XDECREF(exc);
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+ return -1;
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+#else
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+ return 0;
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+#endif
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}
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@@ -519,9 +542,19 @@ new_buffersize(fileio *self, size_t currentsize)
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#ifdef HAVE_FSTAT
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off_t pos, end;
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struct stat st;
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- if (fstat(self->fd, &st) == 0) {
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+ int res;
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+
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+ Py_BEGIN_ALLOW_THREADS
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+ res = fstat(self->fd, &st);
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+ Py_END_ALLOW_THREADS
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+
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+ if (res == 0) {
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end = st.st_size;
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+
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+ Py_BEGIN_ALLOW_THREADS
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pos = lseek(self->fd, 0L, SEEK_CUR);
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+ Py_END_ALLOW_THREADS
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+
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/* Files claiming a size smaller than SMALLCHUNK may
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actually be streaming pseudo-files. In this case, we
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apply the more aggressive algorithm below.
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diff --git a/Objects/fileobject.c b/Objects/fileobject.c
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index 2f63c374d1e..8d1c5812f0d 100644
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--- a/Objects/fileobject.c
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+++ b/Objects/fileobject.c
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@@ -121,10 +121,15 @@ dircheck(PyFileObject* f)
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{
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#if defined(HAVE_FSTAT) && defined(S_IFDIR) && defined(EISDIR)
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struct stat buf;
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+ int res;
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if (f->f_fp == NULL)
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return f;
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- if (fstat(fileno(f->f_fp), &buf) == 0 &&
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- S_ISDIR(buf.st_mode)) {
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+
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+ Py_BEGIN_ALLOW_THREADS
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+ res = fstat(fileno(f->f_fp), &buf);
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+ Py_END_ALLOW_THREADS
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+
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+ if (res == 0 && S_ISDIR(buf.st_mode)) {
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char *msg = strerror(EISDIR);
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PyObject *exc = PyObject_CallFunction(PyExc_IOError, "(isO)",
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EISDIR, msg, f->f_name);
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@@ -1010,7 +1015,13 @@ new_buffersize(PyFileObject *f, size_t currentsize)
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#ifdef HAVE_FSTAT
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off_t pos, end;
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struct stat st;
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- if (fstat(fileno(f->f_fp), &st) == 0) {
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+ int res;
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+
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+ Py_BEGIN_ALLOW_THREADS
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+ res = fstat(fileno(f->f_fp), &st);
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+ Py_END_ALLOW_THREADS
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+
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+ if (res == 0) {
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end = st.st_size;
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/* The following is not a bug: we really need to call lseek()
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*and* ftell(). The reason is that some stdio libraries
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@@ -1021,7 +1032,11 @@ new_buffersize(PyFileObject *f, size_t currentsize)
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works. We can't use the lseek() value either, because we
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need to take the amount of buffered data into account.
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(Yet another reason why stdio stinks. :-) */
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+
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+ Py_BEGIN_ALLOW_THREADS
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pos = lseek(fileno(f->f_fp), 0L, SEEK_CUR);
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+ Py_END_ALLOW_THREADS
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+
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if (pos >= 0) {
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pos = ftell(f->f_fp);
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}
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20
python2.spec
20
python2.spec
@ -112,7 +112,7 @@ Summary: An interpreted, interactive, object-oriented programming language
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Name: %{python}
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# Remember to also rebase python-docs when changing this:
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Version: 2.7.14
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Release: 3%{?dist}
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Release: 4%{?dist}
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License: Python
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Group: Development/Languages
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Requires: %{python}-libs%{?_isa} = %{version}-%{release}
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@ -355,7 +355,7 @@ Patch17: python-2.6.4-distutils-rpath.patch
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# for 2.7rc1 by dmalcolm:
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Patch55: 00055-systemtap.patch
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# Only used when "%{_lib}" == "lib64"
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# Only used when "%%{_lib}" == "lib64"
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# Fixup various paths throughout the build and in distutils from "lib" to "lib64",
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# and add the /usr/lib64/pythonMAJOR.MINOR/site-packages to sitedirs, in front of
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# /usr/lib/pythonMAJOR.MINOR/site-packages
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@ -369,7 +369,7 @@ Patch102: 00102-2.7.13-lib64.patch
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Patch103: python-2.7-lib64-sysconfig.patch
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# 00104 #
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# Only used when "%{_lib}" == "lib64"
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# Only used when "%%{_lib}" == "lib64"
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# Another lib64 fix, for distutils/tests/test_install.py; not upstream:
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Patch104: 00104-lib64-fix-for-test_install.patch
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@ -745,6 +745,14 @@ Patch284: 00284-add-PYTHONSHOWREFCOUNT-env-var.patch
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# Fixed upstream: https://bugs.python.org/issue31158
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Patch285: 00285-fix-non-deterministic-read-in-test_pty.patch
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# 00287 #
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# On the creation of io.FileIO() and builtin file() objects the GIL is now released
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# when checking the file descriptor. io.FileIO.readall(), io.FileIO.read(), and
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# file.read() also now release the GIL when getting the file size, which fixes hanging
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# of all threads when trying to access an inaccessible NFS server.
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# Fixed upstream: https://bugs.python.org/issue32186
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Patch287: 00287-fix-thread-hanging-on-inaccessible-nfs-server.patch
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# (New patches go here ^^^)
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#
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# When adding new patches to "python2" and "python3" in Fedora, EL, etc.,
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@ -755,7 +763,7 @@ Patch285: 00285-fix-non-deterministic-read-in-test_pty.patch
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# https://fedoraproject.org/wiki/SIGs/Python/PythonPatches
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# This is the generated patch to "configure"; see the description of
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# %{regenerate_autotooling_patch}
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# %%{regenerate_autotooling_patch}
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# above:
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# Disable tk for modularity builds to break up build dependencies
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@ -1062,6 +1070,7 @@ mv Modules/cryptmodule.c Modules/_cryptmodule.c
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%patch283 -p1
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%patch284 -p1
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%patch285 -p1
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%patch287 -p1
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%if 0%{?_module_build}
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@ -1942,6 +1951,9 @@ rm -fr %{buildroot}
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# ======================================================
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%changelog
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* Mon Dec 11 2017 Charalampos Stratakis <cstratak@redhat.com> - 2.7.14-4
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- Fix hanging of all threads when trying to access an inaccessible NFS server.
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* Thu Nov 09 2017 Miro Hrončok <mhroncok@redhat.com> - 2.7.14-3
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- Make the -devel package require redhat-rpm-config
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Resolves: rhbz#1496757
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