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Bug 1702828 - curl segmentation fault
Summary: curl segmentation fault
Keywords:
Status: CLOSED DUPLICATE of bug 1683292
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: curl
Version: 7.6
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Kamil Dudka
QA Contact: Daniel Rusek
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-04-24 21:20 UTC by Paulo Andrade
Modified: 2019-04-25 12:14 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-04-25 12:14:52 UTC
Target Upstream Version:
Embargoed:


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Description Paulo Andrade 2019-04-24 21:20:00 UTC
Example steps to reproduce:

$ dd if=/dev/zero of=foo.txt bs=1 count=1048576
$ python -m SimpleHTTPServer &
$ curl --silent --connect-timeout 90 -w %{http_code} -g -L -e ';auto' --max-redirs 5 -C - --limit-rate 10000k -o /tmp/foo.txt.part http://127.0.0.1:8000/foo.txt -vvv

Testing on Fedora 29 it will not crash.

Testing a git bisect from curl-7_29_0 to curl-7_61_1 it turns out I cannot
reproduce it on Fedora 29, when building upstream curl-7_29_0.
Did actually a manual bisect, as need to:

$ make clean
$ rm -f /tmp/foo.txt.part
$ git checkout $tag_from_curl-7_29_0_to_curl-7_61_1
$ ./buildconf
$ make
$ LD_PRELOAD=$PWD/lib/.libs/libcurl.so ./src/.libs/curl --silent --connect-timeout 90 -w %{http_code} -g -L -e ';auto' --max-redirs 5 -C - --limit-rate 10000k -o /tmp/foo.txt.part http://127.0.0.1:8000/foo.txt -vvv

I also did omit the --with-gssapi=/usr/kerberos configure option as for some
reason it does not find the (installed) dependencies, and did not debug further.

The problem should be something in rhel7 environment, some of the rhel patches,
or a side effect of --with-gssapi.

Comment 2 Kamil Dudka 2019-04-25 07:56:45 UTC
This looks like a duplicate of bug #1683292.  Could you please retest with curl-7.29.0-52.el7?

Comment 3 Paulo Andrade 2019-04-25 11:47:56 UTC
I confirm the problem is fixed with curl-7.29.0-52.el7.
Also did check with valgrind, as my previous initial work on
bisecting it probably did not trigger due to different memory
layout. Valgrind does not show invalid memory read with the newer
package.

Comment 4 Kamil Dudka 2019-04-25 12:14:52 UTC
Perfect.  Thanks for confirmation and sorry for the breakage!

*** This bug has been marked as a duplicate of bug 1683292 ***


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