linux-kernel - Re: [BUG][NEW DATA] Kmemleak, possibly hiddev_connect(), in 6.3.0+ torvalds tree commit gfc4354c6e5c2

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Date:   Thu, 18 May 2023 10:00:36 +0200
From:   Mirsad Todorovac <mirsad.todorovac@....unizg.hr>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Mirsad Goran Todorovac <mirsad.goran.todorovac@....hr>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-input@...r.kernel.org,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Jiri Kosina <jikos@...nel.org>
Subject: Re: [BUG][NEW DATA] Kmemleak, possibly hiddev_connect(), in 6.3.0+
 torvalds tree commit gfc4354c6e5c2

On 5/17/23 20:57, Greg Kroah-Hartman wrote:

> And leaks are hard to notice, especially ones that only show up when you
> remove a specific type of device.
> 
> thanks again for your help here,

I feel like more of a hindrance from the real issues than being helpful.

Memory leaks seem easy to detect, however, building with KMEMLEAK
debugging on can take up to 50-67% of system time, as I've noticed
a couple of days ago ...

It is obviously incurring some overhead. I did not expect a kernel compilation
as computation-heavy process to have such an impact from memory object
debugging.

Best regards,
Mirsad

-- 
Mirsad Goran Todorovac
Sistem inženjer
Grafički fakultet | Akademija likovnih umjetnosti
Sveučilište u Zagrebu

System engineer
Faculty of Graphic Arts | Academy of Fine Arts
University of Zagreb, Republic of Croatia

"What’s this thing suddenly coming towards me very fast? Very very fast.
... I wonder if it will be friends with me?"