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Re: [PATCH v2] xen/arm: bootfdt: Harden handling of malformed mem reserve map
- To: Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Michal Orzel <michal.orzel@xxxxxxx>
- Date: Fri, 12 Jan 2024 09:56:24 +0100
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- Cc: Timothy Pearson <tpearson@xxxxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Fri, 12 Jan 2024 08:56:43 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 12/01/2024 00:24, Shawn Anastasio wrote:
>
>
> The early_print_info routine in bootfdt.c incorrectly stores the result
> of a call to fdt_num_mem_rsv() in an unsigned int, which results in the
> negative error code being interpreted incorrectly in a subsequent loop
> in the case where the device tree is malformed. Fix this by properly
> checking the return code for an error and calling panic().
>
> Signed-off-by: Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Michal Orzel <michal.orzel@xxxxxxx>
~Michal
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