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From: Rroach <2284696125@qq.com>
To: xen-devel <xen-devel@lists.xenproject.org>
Subject: Locate a memory leak in tools modules
Date: Sat, 28 Nov 2020 22:30:39 +0800	[thread overview]
Message-ID: <tencent_38E67FAD4AE4912BC07DF5BB59F6267A1F09@qq.com> (raw)

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Hi, I'm attempting to use address sanitizer in locating bugs in Xen 4-13, while use address sanitizer in tools modules, while I ran some basic instructions like xl, Xen report such bug:
=================================================================
==2863==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 296 byte(s) in 11 object(s) allocated from:
&nbsp;&nbsp;&nbsp; #0 0x7f5b91aefd28 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc1d28)
&nbsp;&nbsp;&nbsp; #1 0x467997&nbsp; (/usr/bin/x86_64-linux-gnu-gcc-6+0x467997)

Indirect leak of 10 byte(s) in 1 object(s) allocated from:
&nbsp;&nbsp;&nbsp; #0 0x7f5b91aefd28 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc1d28)
&nbsp;&nbsp;&nbsp; #1 0x467997&nbsp; (/usr/bin/x86_64-linux-gnu-gcc-6+0x467997)

SUMMARY: AddressSanitizer: 306 byte(s) leaked in 12 allocation(s).
/root/faultxen/tools/libs/toolcore/../../../tools/Rules.mk:224: recipe for target 'headers.chk' failed
make[5]: *** [headers.chk] Error 1

==7520==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 10 byte(s) in 1 object(s) allocated from:
&nbsp;&nbsp;&nbsp; #0 0x7fd1028c8d28 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc1d28)
&nbsp;&nbsp;&nbsp; #1 0x7fd1022e43b9 in __strdup (/lib/x86_64-linux-gnu/libc.so.6+0x803b9)

SUMMARY: AddressSanitizer: 10 byte(s) leaked in 1 allocation(s).
=================================================================
It seems this bug is very low-level, and affects many basic operations, do you have any idea what cause such bugs?

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                 reply	other threads:[~2020-11-28 14:43 UTC|newest]

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