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Re: [PATCH] xen/bitops: Fix break with in a for_each_set_bit() loop
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 21 Nov 2024 17:07:17 +0100
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Frediano Ziglio <frediano.ziglio@xxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Thu, 21 Nov 2024 16:07:36 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 21.11.2024 15:50, Andrew Cooper wrote:
> for_each_set_bit()'s use of a double for loop had an accidental bug with a
> break in the inner loop leading to an infinite outer loop.
>
> Adjust for_each_set_bit() to avoid this behaviour, and add extend
> test_for_each_set_bit() with a test case for this.
>
> Fixes: ed26376f20bf ("xen/bitops: Introduce for_each_set_bit()")
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
Nit: In the title, isn't it supposed to be "within"? And in the 2md paragraph
there looks to be a stray "add".
Jan
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