diff options
Diffstat (limited to 'gnu/packages/patches/python-2.7-getentropy-on-old-kernels.patch')
| -rw-r--r-- | gnu/packages/patches/python-2.7-getentropy-on-old-kernels.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/gnu/packages/patches/python-2.7-getentropy-on-old-kernels.patch b/gnu/packages/patches/python-2.7-getentropy-on-old-kernels.patch new file mode 100644 index 0000000000..5a09b4ac52 --- /dev/null +++ b/gnu/packages/patches/python-2.7-getentropy-on-old-kernels.patch @@ -0,0 +1,54 @@ +This patch resolves a compatibility issue when compiled against glibc +2.25 +and run runder kernels < 3.17: + +https://bugzilla.redhat.com/show_bug.cgi?id=1410175 + +Upstream bug URLs: + +https://bugs.python.org/issue29157 +https://bugs.python.org/issue29188 + +Patch adapted from upstream source repository: + +https://github.com/python/cpython/commit/01bdbad3e951014c58581635b94b22868537901c + +From 01bdbad3e951014c58581635b94b22868537901c Mon Sep 17 00:00:00 2001 +From: Victor Stinner <victor.stinner@gmail.com> +Date: Mon, 9 Jan 2017 11:10:41 +0100 +Subject: [PATCH] Don't use getentropy() on Linux + +Issue #29188: Support glibc 2.24 on Linux: don't use getentropy() function but +read from /dev/urandom to get random bytes, for example in os.urandom(). On +Linux, getentropy() is implemented which getrandom() is blocking mode, whereas +os.urandom() should not block. +--- + Misc/NEWS | 5 +++++ + Python/random.c | 11 +++++++++-- + 2 files changed, 14 insertions(+), 2 deletions(-) + +diff --git a/Python/random.c b/Python/random.c +index 57c41ffcd6..000cb36938 100644 +--- a/Python/random.c ++++ b/Python/random.c +@@ -97,8 +97,15 @@ win32_urandom(unsigned char *buffer, Py_ssize_t size, int raise) + } + + /* Issue #25003: Don't use getentropy() on Solaris (available since +- * Solaris 11.3), it is blocking whereas os.urandom() should not block. */ +-#elif defined(HAVE_GETENTROPY) && !defined(sun) ++ Solaris 11.3), it is blocking whereas os.urandom() should not block. ++ ++ Issue #29188: Don't use getentropy() on Linux since the glibc 2.24 ++ implements it with the getrandom() syscall which can fail with ENOSYS, ++ and this error is not supported in py_getentropy() and getrandom() is called ++ with flags=0 which blocks until system urandom is initialized, which is not ++ the desired behaviour to seed the Python hash secret nor for os.urandom(): ++ see the PEP 524 which was only implemented in Python 3.6. */ ++#elif defined(HAVE_GETENTROPY) && !defined(sun) && !defined(linux) + #define PY_GETENTROPY 1 + + /* Fill buffer with size pseudo-random bytes generated by getentropy(). +-- +2.12.0 + |