From: "Catalin Marinas" <catalin.marinas@gmail.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Possible "struct pid" leak from tty_io.c
Date: Thu, 8 Mar 2007 17:27:37 +0000 [thread overview]
Message-ID: <b0943d9e0703080927hde01f7dt9ae06433e0c87549@mail.gmail.com> (raw)
Hi Eric,
I'm trying to track down a kmemleak report (on an ARM platform) which
seems to have appeared with commit
ab521dc0f8e117fd808d3e425216864d60390500. As I'm not familiar with the
TTY layer at all, is it possible that the above commit missed a
put_pid() call on some path?
The /sbin/init application calls sys_clone() a few times but only one
leak is reported (see below). Looking at the reported pid object (at
0xc7c14500), count is 2 and nr is 296 but no process with pid 296
exists any more.
unreferenced object 0xc7c14500 (size 36):
comm "init", pid 245, jiffies 4294939289
backtrace:
[<c0070c18>] kmem_cache_alloc
[<c003a528>] alloc_pid
[<c0026468>] do_fork
[<c00153b0>] sys_clone
[<c0010f80>] ret_fast_syscall
Thanks.
--
Catalin
next reply other threads:[~2007-03-08 17:27 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-08 17:27 Catalin Marinas [this message]
2007-03-08 18:11 ` Eric W. Biederman
2007-03-09 10:53 ` Catalin Marinas
2007-03-09 16:13 ` Eric W. Biederman
2007-03-09 16:53 ` Catalin Marinas
2007-03-09 16:44 ` Catalin Marinas
2007-03-09 17:09 ` Eric W. Biederman
2007-03-12 15:07 ` Catalin Marinas
2007-03-12 16:12 ` Eric W. Biederman
2007-03-13 19:31 ` Eric W. Biederman
2007-03-14 9:59 ` Catalin Marinas
2007-03-14 14:40 ` Eric W. Biederman
2007-03-14 17:08 ` Catalin Marinas
2007-03-15 19:15 ` Eric W. Biederman
2007-03-16 22:01 ` Eric W. Biederman
2007-03-16 22:44 ` Catalin Marinas
2007-03-18 18:45 ` [PATCH] tty: Fix two reported pid leaks Eric W. Biederman
2007-03-18 18:52 ` [PATCH 0/4] tty: small fixes and cleanups Eric W. Biederman
2007-03-18 18:57 ` [PATCH 1/4] tty: Remove unnecessary export of proc_clear_tty Eric W. Biederman
2007-03-18 19:03 ` [PATCH 2/4] tty: Simplify calling of put_pid Eric W. Biederman
2007-03-18 19:08 ` [PATCH 3/4] tty: Introduce no_tty and use it in selinux Eric W. Biederman
2007-03-18 19:13 ` [PATCH 4/4] tty: In tiocsctty when we steal a tty hang it up Eric W. Biederman
2007-03-18 20:55 ` [PATCH 3/4] tty: Introduce no_tty and use it in selinux Alan Cox
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