On Wed, Mar 15, 2023 at 01:11:26PM +0300, Denis Orlov wrote:
> For a program header, the value of 'p_filesz' may be less than the one
> of 'p_memsz', in which case the leftover amount of space should be
> filled with zeroes. This is done correctly when loading elf to memory.
> However, when we are requesting memory beforehand we do pass the value
> of 'p_filesz', instead of 'p_memsz', to 'request_sdram_region',
> resulting in potentially smaller amount of memory to be reserved.
>
> As 'p_memsz' is always greater or equal to 'p_filesz', use only the
> former for checking memory requirements in 'request_elf_segment'.
>
> Signed-off-by: Denis Orlov <denorl2009@xxxxxxxxx>
> ---
> common/elf.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
Applied, thanks
Sascha
>
> diff --git a/common/elf.c b/common/elf.c
> index eec62cad61..c9b3d7bb37 100644
> --- a/common/elf.c
> +++ b/common/elf.c
> @@ -59,14 +59,13 @@ static int request_elf_segment(struct elf_image *elf, void *phdr)
> {
> void *dst = (void *) (phys_addr_t) elf_phdr_p_paddr(elf, phdr);
> int ret;
> - u64 p_filesz = elf_phdr_p_filesz(elf, phdr);
> u64 p_memsz = elf_phdr_p_memsz(elf, phdr);
>
> /* we care only about PT_LOAD segments */
> if (elf_phdr_p_type(elf, phdr) != PT_LOAD)
> return 0;
>
> - if (!p_filesz)
> + if (!p_memsz)
> return 0;
>
> if (dst < elf->low_addr)
> @@ -74,9 +73,9 @@ static int request_elf_segment(struct elf_image *elf, void *phdr)
> if (dst + p_memsz > elf->high_addr)
> elf->high_addr = dst + p_memsz;
>
> - pr_debug("Requesting segment 0x%p (%llu bytes)\n", dst, p_filesz);
> + pr_debug("Requesting segment 0x%p (%llu bytes)\n", dst, p_memsz);
>
> - ret = elf_request_region(elf, (resource_size_t)dst, p_filesz, phdr);
> + ret = elf_request_region(elf, (resource_size_t)dst, p_memsz, phdr);
> if (ret)
> return ret;
>
> --
> 2.30.2
>
>
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