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Bug 1324387 - libtevent leaks memory during signal handling
Summary: libtevent leaks memory during signal handling
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libtevent
Version: 7.3
Hardware: All
OS: Linux
urgent
urgent
Target Milestone: rc
: ---
Assignee: Jakub Hrozek
QA Contact: Steeve Goveas
URL:
Whiteboard:
Depends On: 1309439
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-04-06 08:50 UTC by Marcel Kolaja
Modified: 2019-10-10 11:47 UTC (History)
11 users (show)

Fixed In Version: libtevent-0.9.26-1.el7_2.1
Doc Type: Bug Fix
Doc Text:
Previously, the libtevent package suffered from a memory leak in signal handling. This bug has been fixed and memory leaks no longer occur in libtevent.
Clone Of: 1309439
Environment:
Last Closed: 2016-05-12 10:06:52 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2016:1037 0 normal SHIPPED_LIVE libtevent bug fix update 2016-05-12 13:55:56 UTC

Description Marcel Kolaja 2016-04-06 08:50:06 UTC 
This bug has been copied from bug #1309439 and has been proposed
to be backported to 7.2 z-stream (EUS).
Comment 4 Amith 2016-04-27 12:50:29 UTC 
Verified the bug on libtevent Version: libtevent-0.9.26-1.el7_2.1.x86_64

Steps followed during verification:
1. Reproduced the bug with the older build: libtevent-0.9.25-1.el7.x86_64
2. Upon executing the reproducer program with unpatched package, following leaks were reported: 

# ./a.out 
full talloc report on 'null_context' (total  18128 bytes in 107 blocks)
    struct tevent_sig_state        contains  17968 bytes in 101 blocks (ref 0) 0x1590680
        struct sigaction               contains    152 bytes in   1 blocks (ref 0) 0x159f7b0
        struct sigaction               contains    152 bytes in   1 blocks (ref 0) 0x159f6b0
        struct sigaction               contains    152 bytes in   1 blocks (ref 0) 0x159f5b0
        .
        .
        .
        struct sigaction               contains    152 bytes in   1 blocks (ref 0) 0x15996b0
    struct tevent_ops_list         contains     32 bytes in   1 blocks (ref 0) 0x1590320
    struct tevent_ops_list         contains     32 bytes in   1 blocks (ref 0) 0x1590290
    struct tevent_ops_list         contains     32 bytes in   1 blocks (ref 0) 0x1590200
    
3. With the patched build, the "struct sigaction" shouldn't be reported, see the output:

# ./a.out 
full talloc report on 'null_context' (total   2928 bytes in   7 blocks)
    struct tevent_sig_state        contains   2768 bytes in   1 blocks (ref 0) 0x97e680
    struct tevent_ops_list         contains     32 bytes in   1 blocks (ref 0) 0x97e320
    struct tevent_ops_list         contains     32 bytes in   1 blocks (ref 0) 0x97e290
    struct tevent_ops_list         contains     32 bytes in   1 blocks (ref 0) 0x97e200
    struct tevent_ops_list         contains     32 bytes in   1 blocks (ref 0) 0x97e170
    struct tevent_ops_list         contains     32 bytes in   1 blocks (ref 0) 0x97e0e0
Comment 6 errata-xmlrpc 2016-05-12 10:06:52 UTC 
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.

https://rhn.redhat.com/errata/RHBA-2016-1037.html
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