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Re: [PATCH] vfs:Fix memory leak on error path in get_empty_file

From Catalin Marinas <catalin.marinas@arm.com>
Newsgroups linux.kernel
Subject Re: [PATCH] vfs:Fix memory leak on error path in get_empty_file
Date 2016-07-22 12:50 +0200
Message-ID <rXGbL-4Fj-3@gated-at.bofh.it> (permalink)
References <rXzWF-GT-3@gated-at.bofh.it> <rXzWF-GT-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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I can't find the original post (probably it only went to the
linux-fsdevel list), so replying to Nicholas here:

> On Thu, Jul 21, 2016 at 10:53:37PM -0400, Nicholas Krause wrote:
>> This fixes a memory leak on the error path if the call to
>> security_file_alloc fails to run successfully as detected
>> in this trace by kmemleak:
>> [  321.783718] ath9k 0000:03:00.0 eth0: renamed from wlan0
>> [  330.960024] atl1c 0000:02:00.0 eth1: renamed from eth126
>> [  391.831384] WARNING: kmemcheck: Caught 64-bit read from uninitialized memory (ffff8800a8ad8a00)

Can you please understand that kmemleak != kmemcheck, even though the
names are similar? It would save both your and other developers' time.
See the corresponding Kconfig help text:

KMEMCHECK: "kmemcheck: trap use of uninitialized memory"
DEBUG_KMEMLEAK: "Kernel memory leak detector"

-- 
Catalin

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Thread

Re: [PATCH] vfs:Fix memory leak on error path in get_empty_file Al Viro <viro@ZenIV.linux.org.uk> - 2016-07-22 06:10 +0200
  Re: [PATCH] vfs:Fix memory leak on error path in get_empty_file Catalin Marinas <catalin.marinas@arm.com> - 2016-07-22 12:50 +0200
    Re: [PATCH] vfs:Fix memory leak on error path in get_empty_file Theodore Ts'o <tytso@mit.edu> - 2016-07-23 19:10 +0200

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