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elfcore: Add a cprm parameter to elf_core_extra_{phdrs,data_size}

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A subsequent fix for arm64 will use this parameter to parse the vma
information from the snapshot created by dump_vma_snapshot() rather than
traversing the vma list without the mmap_lock.

Fixes: 6dd8b1a0b6 ("arm64: mte: Dump the MTE tags in the core file")
Cc: <stable@vger.kernel.org> # 5.18.x
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Seth Jenkins <sethjenkins@google.com>
Suggested-by: Seth Jenkins <sethjenkins@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20221222181251.1345752-3-catalin.marinas@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Catalin Marinas 2022-12-22 18:12:50 +00:00 • committed by Will Deacon
parent 736eedc974
commit 19e183b545
6 changed files with 14 additions and 14 deletions
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4
fs/binfmt_elf.c
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@ -2034,7 +2034,7 @@ static int elf_core_dump(struct coredump_params *cprm)
* The number of segs are recored into ELF header as 16bit value.
* Please check DEFAULT_MAX_MAP_COUNT definition when you modify here.
*/
segs = cprm->vma_count + elf_core_extra_phdrs();
segs = cprm->vma_count + elf_core_extra_phdrs(cprm);
/* for notes section */
segs++;
@ -2074,7 +2074,7 @@ static int elf_core_dump(struct coredump_params *cprm)
dataoff = offset = roundup(offset, ELF_EXEC_PAGESIZE);
offset += cprm->vma_data_size;
offset += elf_core_extra_data_size();
offset += elf_core_extra_data_size(cprm);
e_shoff = offset;
if (e_phnum == PN_XNUM) {