Linux Btrfs filesystem development
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From: Qu Wenruo <quwenruo.btrfs@gmx.com>
To: Sachi King <nakato@nakato.io>, u-boot@lists.denx.de
Cc: kabel@kernel.org, wqu@suse.com, linux-btrfs@vger.kernel.org
Subject: Re: BTRFS use-after-free bug at free_extent_buffer_internal
Date: Mon, 22 Apr 2024 18:25:58 +0930	[thread overview]
Message-ID: <9086a324-b17a-4e00-906b-816fb2b05880@gmx.com> (raw)
In-Reply-To: <995dd168-8e1e-4b99-896c-ece4dc88d6e9@gmx.com>



在 2024/4/22 16:45, Qu Wenruo 写道:
[...]
>>
>> I added a print statement to free_extent_buffer_internal that prints the
>> start address of the extent_buffer as I'm not sure what to be looking for
>> here.  This print statement is before the decrement.
>>> printf("free_extent_buffer_internal: eb->start[%llx] eb->refs[%i]\n",
>>> eb->start, eb->refs);
>>

Just a small advice, in fact you can go with sandbox mode, running
U-boot in userspace, and bind a host file as a device to test the
filesystem code.

At least that's what I did for most U-boot bugs.

Thanks,
Qu

  reply	other threads:[~2024-04-22  8:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-22  6:37 BTRFS use-after-free bug at free_extent_buffer_internal Sachi King
2024-04-22  7:15 ` Qu Wenruo
2024-04-22  8:55   ` Qu Wenruo [this message]
2024-04-23  4:53   ` Sachi King

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