diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-29 05:24:30 +0200 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2023-09-29 18:54:27 +0200 |
| commit | 8ed2ef21ff564cf4a25c098ace510ee6513c9836 (patch) | |
| tree | 8916ae5e76e25d12aa89beabf82598036648cf29 /fs/binfmt_elf.c | |
| parent | binfmt_elf: Support segments with 0 filesz and misaligned starts (diff) | |
| download | linux-8ed2ef21ff564cf4a25c098ace510ee6513c9836.tar.xz linux-8ed2ef21ff564cf4a25c098ace510ee6513c9836.zip | |
binfmt_elf: elf_bss no longer used by load_elf_binary()
With the BSS handled generically via the new filesz/memsz mismatch
handling logic in elf_load(), elf_bss no longer needs to be tracked.
Drop the variable.
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: linux-fsdevel@vger.kernel.org
Cc: linux-mm@kvack.org
Suggested-by: Eric Biederman <ebiederm@xmission.com>
Tested-by: Pedro Falcato <pedro.falcato@gmail.com>
Signed-off-by: Sebastian Ott <sebott@redhat.com>
Link: https://lore.kernel.org/r/20230929032435.2391507-2-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'fs/binfmt_elf.c')
| -rw-r--r-- | fs/binfmt_elf.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 2a615f476e44..0214d5a949fc 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -854,7 +854,7 @@ static int load_elf_binary(struct linux_binprm *bprm) unsigned long error; struct elf_phdr *elf_ppnt, *elf_phdata, *interp_elf_phdata = NULL; struct elf_phdr *elf_property_phdata = NULL; - unsigned long elf_bss, elf_brk; + unsigned long elf_brk; int retval, i; unsigned long elf_entry; unsigned long e_entry; @@ -1045,7 +1045,6 @@ out_free_interp: if (retval < 0) goto out_free_dentry; - elf_bss = 0; elf_brk = 0; start_code = ~0UL; @@ -1208,8 +1207,6 @@ out_free_interp: k = elf_ppnt->p_vaddr + elf_ppnt->p_filesz; - if (k > elf_bss) - elf_bss = k; if ((elf_ppnt->p_flags & PF_X) && end_code < k) end_code = k; if (end_data < k) @@ -1221,7 +1218,6 @@ out_free_interp: e_entry = elf_ex->e_entry + load_bias; phdr_addr += load_bias; - elf_bss += load_bias; elf_brk += load_bias; start_code += load_bias; end_code += load_bias; |