delta/cpython-git.git/Python/random.c, branch v3.6.7 github.com: python/cpython.git [3.6] bpo-33021: Release the GIL during fstat() calls (GH-6019) (GH-6160) 2018-03-20T19:40:18+00:00 Miss Islington (bot) 31488909+miss-islington@users.noreply.github.com 2018-03-20T19:40:18+00:00 f3e6eadbcf4f3e0fe53f4784485b1c8464c7d282 fstat may block for long time if the file descriptor is on a non-responsive NFS server, hanging all threads. Most fstat() calls are handled by _Py_fstat(), releasing the GIL internally, but but _Py_fstat_noraise() does not release the GIL, and most calls release the GIL explicitly around it. This patch fixes last 2 calls to _Py_fstat_no_raise(), avoiding hangs when calling: - mmap.mmap() - os.urandom() - random.seed() (cherry picked from commit 4484f9dca9149da135bbae035f10a50d20d1cbbb) Co-authored-by: Nir Soffer <nirsof@gmail.com> 
fstat may block for long time if the file descriptor is on a
non-responsive NFS server, hanging all threads. Most fstat() calls are
handled by _Py_fstat(), releasing the GIL internally, but but
_Py_fstat_noraise() does not release the GIL, and most calls release the
GIL explicitly around it.

This patch fixes last 2 calls to _Py_fstat_no_raise(), avoiding hangs
when calling:
- mmap.mmap()
- os.urandom()
- random.seed()
(cherry picked from commit 4484f9dca9149da135bbae035f10a50d20d1cbbb)

Co-authored-by: Nir Soffer <nirsof@gmail.com>
 bpo-32329: Fix sys.flags.hash_randomization (#4875) 2017-12-15T00:39:48+00:00 Victor Stinner victor.stinner@gmail.com 2017-12-15T00:39:48+00:00 22097aaa77b4f0473552fe840358d77e5b9a253f sys.flags.hash_randomization is now properly set to 0 when hash randomization is turned off by PYTHONHASHSEED=0. 
sys.flags.hash_randomization is now properly set to 0 when hash
randomization is turned off by PYTHONHASHSEED=0.
 Issue #29157: Prefer getrandom() over getentropy() 2017-01-06T23:07:45+00:00 Victor Stinner victor.stinner@gmail.com 2017-01-06T23:07:45+00:00 ff558f5aba40bd173f336503def886a12f8db016 * dev_urandom() now calls py_getentropy(). Prepare the fallback to support getentropy() failure and falls back on reading from /dev/urandom. * Simplify dev_urandom(). pyurandom() is now responsible to call getentropy() or getrandom(). Enhance also dev_urandom() and pyurandom() documentation. * getrandom() is now preferred over getentropy(). The glibc 2.24 now implements getentropy() on Linux using the getrandom() syscall. But getentropy() doesn't support non-blocking mode. Since getrandom() is tried first, it's not more needed to explicitly exclude getentropy() on Solaris. Replace: "if defined(HAVE_GETENTROPY) && !defined(sun)" with "if defined(HAVE_GETENTROPY)" * Enhance py_getrandom() documentation. py_getentropy() now supports ENOSYS, EPERM & EINTR 
* dev_urandom() now calls py_getentropy(). Prepare the fallback to support
  getentropy() failure and falls back on reading from /dev/urandom.
* Simplify dev_urandom(). pyurandom() is now responsible to call getentropy()
  or getrandom(). Enhance also dev_urandom() and pyurandom() documentation.
* getrandom() is now preferred over getentropy(). The glibc 2.24 now implements
  getentropy() on Linux using the getrandom() syscall.  But getentropy()
  doesn't support non-blocking mode. Since getrandom() is tried first, it's not
  more needed to explicitly exclude getentropy() on Solaris. Replace:
  "if defined(HAVE_GETENTROPY) && !defined(sun)"
  with "if defined(HAVE_GETENTROPY)"
* Enhance py_getrandom() documentation. py_getentropy() now supports ENOSYS,
  EPERM & EINTR
merge 3.5 (#29057) 2017-01-02T04:30:26+00:00 Benjamin Peterson benjamin@python.org 2017-01-02T04:30:26+00:00 46322587ecb725c99211c3365a7ba2cbfc574403 






only include sys/random.h if it seems like it might have something useful (#29057)
2017-01-02T04:29:36+00:00

Benjamin Peterson
benjamin@python.org

2017-01-02T04:29:36+00:00

493ac1bbe02a57d08e0f8a76b436626f86b03796












merge 3.5 (#28932)
2016-12-20T07:54:57+00:00

Benjamin Peterson
benjamin@python.org

2016-12-20T07:54:57+00:00

b0eb986eb236c41ebf098233940e038c7b993b9f












add a specific configure check for sys/random.h (closes #28932)
2016-12-20T07:54:25+00:00

Benjamin Peterson
benjamin@python.org

2016-12-20T07:54:25+00:00

fb2ae15c6704a072afeef4786749d9bb2ce7d68d












Issue #28676: merge from 3.5
2016-11-12T21:38:03+00:00

Ned Deily
nad@python.org

2016-11-12T21:38:03+00:00

7d895d3c37e2ff5189d2d8b71def4e2fee34f10b












Issue #28676: Prevent missing 'getentropy' declaration warning on macOS.
2016-11-12T21:35:48+00:00

Ned Deily
nad@python.org

2016-11-12T21:35:48+00:00

7ae411264933bfc845c3647cde478508c7981ad3

Patch by Gareth Rees.





Patch by Gareth Rees.







(Merge 3.5) Catch EPERM error in py_getrandom()
2016-09-20T20:49:52+00:00

Victor Stinner
victor.stinner@gmail.com

2016-09-20T20:49:52+00:00

75024c6589539f72af69ce61cd6493b193989c2d

Issue #27955: Fallback on reading /dev/urandom device when the getrandom()
syscall fails with EPERM, for example when blocked by SECCOMP.





Issue #27955: Fallback on reading /dev/urandom device when the getrandom()
syscall fails with EPERM, for example when blocked by SECCOMP.