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* [Bug libc/13651] New: resolver fails if result to first query fails but second succeeds
@ 2012-02-02 0:28 aurelien at aurel32 dot net
2012-02-21 2:42 ` [Bug network/13651] " jsm28 at gcc dot gnu.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: aurelien at aurel32 dot net @ 2012-02-02 0:28 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=13651
Bug #: 13651
Summary: resolver fails if result to first query fails but
second succeeds
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
AssignedTo: drepper.fsp@gmail.com
ReportedBy: aurelien@aurel32.net
Classification: Unclassified
Created attachment 6187
--> http://sourceware.org/bugzilla/attachment.cgi?id=6187
Patch to fix the issue
When using a nameserver which doesn't support IPv6, it might returns FORMERR or
NOTIMP, though it's not supposed to be the case according to the RFC. When this
corresponds to the first answer (which is usually the case as it's faster to
just return an error than doing a recursive query), resplen (that is the
returned value) ends up being 0 and resplen2 > 0. The tests in
__libc_res_nsearch() only look at resplen and totally ignore resplen2.
The attached patch fixes that by testing if resplen > 0 or resplen == 0 (that
is empty result, but no error) and resplen2 > 0.
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* [Bug network/13651] resolver fails if result to first query fails but second succeeds
2012-02-02 0:28 [Bug libc/13651] New: resolver fails if result to first query fails but second succeeds aurelien at aurel32 dot net
@ 2012-02-21 2:42 ` jsm28 at gcc dot gnu.org
2012-06-21 7:55 ` mkubecek at suse dot cz
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2012-02-21 2:42 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=13651
Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|libc |network
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* [Bug network/13651] resolver fails if result to first query fails but second succeeds
2012-02-02 0:28 [Bug libc/13651] New: resolver fails if result to first query fails but second succeeds aurelien at aurel32 dot net
2012-02-21 2:42 ` [Bug network/13651] " jsm28 at gcc dot gnu.org
@ 2012-06-21 7:55 ` mkubecek at suse dot cz
2012-12-19 10:48 ` schwab@linux-m68k.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: mkubecek at suse dot cz @ 2012-06-21 7:55 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=13651
Michal Kubeček <mkubecek at suse dot cz> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mkubecek at suse dot cz
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* [Bug network/13651] resolver fails if result to first query fails but second succeeds
2012-02-02 0:28 [Bug libc/13651] New: resolver fails if result to first query fails but second succeeds aurelien at aurel32 dot net
2012-02-21 2:42 ` [Bug network/13651] " jsm28 at gcc dot gnu.org
2012-06-21 7:55 ` mkubecek at suse dot cz
@ 2012-12-19 10:48 ` schwab@linux-m68k.org
2013-10-08 16:40 ` neleai at seznam dot cz
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: schwab@linux-m68k.org @ 2012-12-19 10:48 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=13651
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|drepper.fsp at gmail dot |unassigned at sourceware
|com |dot org
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* [Bug network/13651] resolver fails if result to first query fails but second succeeds
2012-02-02 0:28 [Bug libc/13651] New: resolver fails if result to first query fails but second succeeds aurelien at aurel32 dot net
` (2 preceding siblings ...)
2012-12-19 10:48 ` schwab@linux-m68k.org
@ 2013-10-08 16:40 ` neleai at seznam dot cz
2014-04-16 9:11 ` siddhesh at redhat dot com
2014-06-27 9:58 ` fweimer at redhat dot com
5 siblings, 0 replies; 7+ messages in thread
From: neleai at seznam dot cz @ 2013-10-08 16:40 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=13651
Ondrej Bilka <neleai at seznam dot cz> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
CC| |neleai at seznam dot cz
--- Comment #1 from Ondrej Bilka <neleai at seznam dot cz> ---
Aurelien, did you send this patch to libc-alpha?
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* [Bug network/13651] resolver fails if result to first query fails but second succeeds
2012-02-02 0:28 [Bug libc/13651] New: resolver fails if result to first query fails but second succeeds aurelien at aurel32 dot net
` (3 preceding siblings ...)
2013-10-08 16:40 ` neleai at seznam dot cz
@ 2014-04-16 9:11 ` siddhesh at redhat dot com
2014-06-27 9:58 ` fweimer at redhat dot com
5 siblings, 0 replies; 7+ messages in thread
From: siddhesh at redhat dot com @ 2014-04-16 9:11 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=13651
Siddhesh Poyarekar <siddhesh at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
CC| |siddhesh at redhat dot com
Resolution|--- |DUPLICATE
--- Comment #2 from Siddhesh Poyarekar <siddhesh at redhat dot com> ---
*** This bug has been marked as a duplicate of bug 12994 ***
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* [Bug network/13651] resolver fails if result to first query fails but second succeeds
2012-02-02 0:28 [Bug libc/13651] New: resolver fails if result to first query fails but second succeeds aurelien at aurel32 dot net
` (4 preceding siblings ...)
2014-04-16 9:11 ` siddhesh at redhat dot com
@ 2014-06-27 9:58 ` fweimer at redhat dot com
5 siblings, 0 replies; 7+ messages in thread
From: fweimer at redhat dot com @ 2014-06-27 9:58 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=13651
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Flags| |security-
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end of thread, other threads:[~2014-06-27 9:58 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2012-02-02 0:28 [Bug libc/13651] New: resolver fails if result to first query fails but second succeeds aurelien at aurel32 dot net
2012-02-21 2:42 ` [Bug network/13651] " jsm28 at gcc dot gnu.org
2012-06-21 7:55 ` mkubecek at suse dot cz
2012-12-19 10:48 ` schwab@linux-m68k.org
2013-10-08 16:40 ` neleai at seznam dot cz
2014-04-16 9:11 ` siddhesh at redhat dot com
2014-06-27 9:58 ` fweimer at redhat dot com
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