[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <ZQiayAKAW6sjseiR@slm.duckdns.org>
Date: Mon, 18 Sep 2023 08:45:28 -1000
From: Tejun Heo <tj@...nel.org>
To: Catalin Marinas <catalin.marinas@....com>
Cc: linux-kernel@...r.kernel.org, dhavale@...gle.com
Subject: Re: [PATCH] workqueue: Remove duplicate worqueue attributes
allocation
On Wed, Sep 06, 2023 at 06:39:04PM +0100, Catalin Marinas wrote:
> Commit 84193c07105c ("workqueue: Generalize unbound CPU pods")
> inadvertently introduced another call to alloc_workqueue_attrs()
> overriding the pointer returned by a previous alloc_workqueue_attrs() a
> few lines up in workqueue_init_early(). This leads to a kmemleak report:
>
> unreferenced object 0xffff000040015000 (size 96):
> comm "swapper/0", pid 0, jiffies 4294892296 (age 163.956s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 03 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> backtrace:
> [<000000004cec0d50>] __kmem_cache_alloc_node+0x1c4/0x288
> [<0000000083361c2a>] kmalloc_trace+0x20/0x2c
> [<000000005ca61f11>] workqueue_init_early+0xe4/0x538
> [<000000004e6ea358>] start_kernel+0x23c/0x5ec
> [<00000000aea9761e>] __primary_switched+0xbc/0xc4
>
> Remove the first allocation.
>
> Fixes: 84193c07105c ("workqueue: Generalize unbound CPU pods")
> Signed-off-by: Catalin Marinas <catalin.marinas@....com>
> Cc: Tejun Heo <tj@...nel.org>
Another version of this patch has been applied to wq/for-6.6-fixes.
Thanks.
--
tejun
Powered by blists - more mailing lists