linux-kernel - Re: kmemleak for MIPS

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <AANLkTi=RXoEOVmTPiL=dfO97aOVKWOJWE7hoQduPPsCZ@mail.gmail.com>
Date:	Wed, 30 Mar 2011 14:17:03 +0100
From:	Maxin John <maxin.john@...il.com>
To:	Daniel Baluta <daniel.baluta@...il.com>
Cc:	Catalin Marinas <catalin.marinas@....com>,
	naveen yadav <yad.naveen@...il.com>, linux-mips@...ux-mips.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: kmemleak for MIPS

Hi,

I have compiled the kernel with below given modification in .config

CONFIG_CMDLINE="uhash_entries=256"

After booting with the new kernel, the "kmemleak" no longer complains
about the "udp_table_init".
However it do report another possible leak :)

debian-mips:~# cat /sys/kernel/debug/kmemleak
unreferenced object 0x8f085000 (size 4096):
  comm "swapper", pid 1, jiffies 4294937670 (age 1043.280s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<801ac7a8>] __kmalloc+0x130/0x180
    [<80532500>] flow_cache_cpu_prepare+0x50/0xa8
    [<8052378c>] flow_cache_init_global+0x90/0x138
    [<80100584>] do_one_initcall+0x174/0x1e0
    [<8050c348>] kernel_init+0xe4/0x174
    [<80103d4c>] kernel_thread_helper+0x10/0x18
debian-mips:~#

> So, I guess everything is fine regarding udp_init_table. We can move on,
> integrating MIPS support for kmemleak :).
>

I completely agree with Daniel. Shall we move on and integrate the
kmemleak support for MIPS ?

Cheers,
Maxin
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/