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From: Alexey Dobriyan <adobriyan@gmail.com>
To: akpm@linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 3/3] ELF: don't free interpreter's ELF pheaders on common path
Date: Wed, 19 Feb 2020 21:53:30 +0300
Message-ID: <20200219185330.GA4933@avx2> (raw)
In-Reply-To: <20200219185012.GB4871@avx2>

Static executables don't need to free NULL pointer.

It doesn't matter really because static executable is not common
scenario but do it anyway out of pedantry.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---

 fs/binfmt_elf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1075,6 +1075,7 @@ static int load_elf_binary(struct linux_binprm *bprm)
 		fput(interpreter);
 
 		kfree(interp_elf_ex);
+		kfree(interp_elf_phdata);
 	} else {
 		elf_entry = e_entry;
 		if (BAD_ADDR(elf_entry)) {
@@ -1083,7 +1084,6 @@ static int load_elf_binary(struct linux_binprm *bprm)
 		}
 	}
 
-	kfree(interp_elf_phdata);
 	kfree(elf_phdata);
 
 	set_binfmt(&elf_format);

      reply index

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-19 18:48 [PATCH 1/3] ELF: delete "loc" variable Alexey Dobriyan
2020-02-19 18:50 ` [PATCH 2/3] ELF: allocate less for static executable Alexey Dobriyan
2020-02-19 18:53   ` Alexey Dobriyan [this message]

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