Bug 1302229 - segfault in script after ulimit -v [RHEL-7]
segfault in script after ulimit -v [RHEL-7]
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: zsh (Show other bugs)
Unspecified Unspecified
unspecified Severity low
: rc
: ---
Assigned To: Kamil Dudka
Jan Kepler
Maxim Svistunov
: Patch
Depends On:
Blocks: 1300958
  Show dependency treegraph
Reported: 2016-01-27 04:11 EST by Kamil Dudka
Modified: 2016-11-03 19:03 EDT (History)
4 users (show)

See Also:
Fixed In Version: zsh-5.0.2-18.el7
Doc Type: Bug Fix
Doc Text:
*zsh* handles the "out of memory" scenario gracefully now The *zsh* shell allocates memory while printing the `out of memory` fatal error message. Previously, if the printing routine failed to allocate memory, it triggered an infinite recursion. Consequently, the *zsh* process terminated unexpectedly due to a stack overflow. With this update, the infinite recursion no longer appears in this scenario. As a result, after printing the fatal error message, *zsh* now terminates gracefully in case it runs out of memory.
Story Points: ---
Clone Of: 1300958
Last Closed: 2016-11-03 19:03:06 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Kamil Dudka 2016-01-27 04:11:48 EST
+++ This bug was initially created as a clone of Bug #1300958 +++

--- Additional comment from Kamil Dudka on 2016-01-25 14:56 CET ---
Created attachment #1118021 [details]
proof-of-concept reproducer

I have attached a universal reproducer script.  It is not completely reliable because dynamic linker and pthread run-time may run out of memory sooner than zsh itself in some cases.  Nevertheless, I am able to trigger the infinite recursion with upstream git HEAD if I create a statically linked executable.

--- Additional comment from Kamil Dudka on 2016-01-25 16:22:58 CET ---

reported upstream:


--- Additional comment from Kamil Dudka on 2016-01-27 09:25:40 CET ---

upstream commits:


--- Additional comment from Kamil Dudka on 2016-01-27 10:08:07 CET ---

fixed in zsh-5.2-4.fc24
Comment 8 errata-xmlrpc 2016-11-03 19:03:06 EDT
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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