[PATCH 6.1 01/97] binfmt: Fix whitespace issues

[PATCH 6.1 01/97] binfmt: Fix whitespace issues

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kees Cook <keescook@chromium.org>

[ Upstream commit 8f6e3f9e5a0f58e458a348b7e36af11d0e9702af ]

Fix the annoying whitespace issues that have been following these files
around for years.

Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Link: https://lore.kernel.org/r/20221018071350.never.230-kees@kernel.org
Stable-dep-of: 11854fe263eb ("binfmt_elf: Move brk for static PIE even if ASLR disabled")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/binfmt_elf.c          | 14 +++++++-------
 fs/binfmt_elf_fdpic.c    |  2 +-
 fs/exec.c                |  2 +-
 include/uapi/linux/elf.h |  2 +-
 4 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 89e7e4826efce..d1cf3d25da4b6 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -248,7 +248,7 @@ create_elf_tables(struct linux_binprm *bprm, const struct elfhdr *exec,
 	} while (0)
 
 #ifdef ARCH_DLINFO
-	/* 
+	/*
 	 * ARCH_DLINFO must come first so PPC can do its special alignment of
 	 * AUXV.
 	 * update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT() in
@@ -1021,7 +1021,7 @@ static int load_elf_binary(struct linux_binprm *bprm)
 				 executable_stack);
 	if (retval < 0)
 		goto out_free_dentry;
-	
+
 	elf_bss = 0;
 	elf_brk = 0;
 
@@ -1044,7 +1044,7 @@ static int load_elf_binary(struct linux_binprm *bprm)
 
 		if (unlikely (elf_brk > elf_bss)) {
 			unsigned long nbyte;
-	            
+
 			/* There was a PT_LOAD segment with p_memsz > p_filesz
 			   before this one. Map anonymous pages, if needed,
 			   and clear the area.  */
@@ -1522,7 +1522,7 @@ static void fill_elf_note_phdr(struct elf_phdr *phdr, int sz, loff_t offset)
 	phdr->p_align = 0;
 }
 
-static void fill_note(struct memelfnote *note, const char *name, int type, 
+static void fill_note(struct memelfnote *note, const char *name, int type,
 		unsigned int sz, void *data)
 {
 	note->name = name;
@@ -2005,8 +2005,8 @@ static int elf_dump_thread_status(long signr, struct elf_thread_status *t)
 	t->num_notes = 0;
 
 	fill_prstatus(&t->prstatus.common, p, signr);
-	elf_core_copy_task_regs(p, &t->prstatus.pr_reg);	
-	
+	elf_core_copy_task_regs(p, &t->prstatus.pr_reg);
+
 	fill_note(&t->notes[0], "CORE", NT_PRSTATUS, sizeof(t->prstatus),
 		  &(t->prstatus));
 	t->num_notes++;
@@ -2296,7 +2296,7 @@ static int elf_core_dump(struct coredump_params *cprm)
 	if (!elf_core_write_extra_phdrs(cprm, offset))
 		goto end_coredump;
 
- 	/* write out the notes section */
+	/* write out the notes section */
 	if (!write_note_info(&info, cprm))
 		goto end_coredump;
 
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index c71a409273150..b2d3b6e43bb56 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1603,7 +1603,7 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
 	if (!elf_core_write_extra_phdrs(cprm, offset))
 		goto end_coredump;
 
- 	/* write out the notes section */
+	/* write out the notes section */
 	if (!writenote(thread_list->notes, cprm))
 		goto end_coredump;
 	if (!writenote(&psinfo_note, cprm))
diff --git a/fs/exec.c b/fs/exec.c
index 2039414cc6621..b65af8f9a4f9b 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -169,7 +169,7 @@ SYSCALL_DEFINE1(uselib, const char __user *, library)
 exit:
 	fput(file);
 out:
-  	return error;
+	return error;
 }
 #endif /* #ifdef CONFIG_USELIB */
 
diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index c7b056af9ef0a..3e5f07be26fc8 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -91,7 +91,7 @@ typedef __s64	Elf64_Sxword;
 #define DT_INIT		12
 #define DT_FINI		13
 #define DT_SONAME	14
-#define DT_RPATH 	15
+#define DT_RPATH	15
 #define DT_SYMBOLIC	16
 #define DT_REL	        17
 #define DT_RELSZ	18
-- 
2.39.5

[PATCH 6.1 03/97] binfmt_elf: elf_bss no longer used by load_elf_binary()

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kees Cook <keescook@chromium.org>

[ Upstream commit 8ed2ef21ff564cf4a25c098ace510ee6513c9836 ]

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>
Stable-dep-of: 11854fe263eb ("binfmt_elf: Move brk for static PIE even if ASLR disabled")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/binfmt_elf.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index ea2968d343bb6..2672b9dca1af0 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -855,7 +855,7 @@ 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;
@@ -1047,7 +1047,6 @@ static int load_elf_binary(struct linux_binprm *bprm)
 	if (retval < 0)
 		goto out_free_dentry;
 
-	elf_bss = 0;
 	elf_brk = 0;
 
 	start_code = ~0UL;
@@ -1210,8 +1209,6 @@ static int load_elf_binary(struct linux_binprm *bprm)
 
 		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)
@@ -1223,7 +1220,6 @@ static int load_elf_binary(struct linux_binprm *bprm)
 
 	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;
-- 
2.39.5