From: Catalin Marinas <catalin.marinas@xxxxxxx>
commit 19e183b54528f11fafeca60fc6d0821e29ff281e upstream.
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: 6dd8b1a0b6cb ("arm64: mte: Dump the MTE tags in the core file")
Cc: <stable@xxxxxxxxxxxxxxx> # 5.18.x
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Reported-by: Seth Jenkins <sethjenkins@xxxxxxxxxx>
Suggested-by: Seth Jenkins <sethjenkins@xxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Eric Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221222181251.1345752-3-catalin.marinas@xxxxxxx
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/kernel/elfcore.c | 4 ++--
arch/ia64/kernel/elfcore.c | 4 ++--
arch/x86/um/elfcore.c | 4 ++--
fs/binfmt_elf.c | 4 ++--
fs/binfmt_elf_fdpic.c | 4 ++--
include/linux/elfcore.h | 8 ++++----
6 files changed, 14 insertions(+), 14 deletions(-)
--- a/arch/arm64/kernel/elfcore.c
+++ b/arch/arm64/kernel/elfcore.c
@@ -75,7 +75,7 @@ static int mte_dump_tag_range(struct cor
return ret;
}
-Elf_Half elf_core_extra_phdrs(void)
+Elf_Half elf_core_extra_phdrs(struct coredump_params *cprm)
{
int i;
struct core_vma_metadata *m;
@@ -112,7 +112,7 @@ int elf_core_write_extra_phdrs(struct co
return 1;
}
-size_t elf_core_extra_data_size(void)
+size_t elf_core_extra_data_size(struct coredump_params *cprm)
{
int i;
struct core_vma_metadata *m;
--- a/arch/ia64/kernel/elfcore.c
+++ b/arch/ia64/kernel/elfcore.c
@@ -7,7 +7,7 @@
#include <asm/elf.h>
-Elf64_Half elf_core_extra_phdrs(void)
+Elf64_Half elf_core_extra_phdrs(struct coredump_params *cprm)
{
return GATE_EHDR->e_phnum;
}
@@ -60,7 +60,7 @@ int elf_core_write_extra_data(struct cor
return 1;
}
-size_t elf_core_extra_data_size(void)
+size_t elf_core_extra_data_size(struct coredump_params *cprm)
{
const struct elf_phdr *const gate_phdrs =
(const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
--- a/arch/x86/um/elfcore.c
+++ b/arch/x86/um/elfcore.c
@@ -7,7 +7,7 @@
#include <asm/elf.h>
-Elf32_Half elf_core_extra_phdrs(void)
+Elf32_Half elf_core_extra_phdrs(struct coredump_params *cprm)
{
return vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0;
}
@@ -60,7 +60,7 @@ int elf_core_write_extra_data(struct cor
return 1;
}
-size_t elf_core_extra_data_size(void)
+size_t elf_core_extra_data_size(struct coredump_params *cprm)
{
if ( vsyscall_ehdr ) {
const struct elfhdr *const ehdrp =
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -2209,7 +2209,7 @@ static int elf_core_dump(struct coredump
* 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++;
@@ -2249,7 +2249,7 @@ static int elf_core_dump(struct coredump
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) {
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1509,7 +1509,7 @@ static int elf_fdpic_core_dump(struct co
tmp->next = thread_list;
thread_list = tmp;
- segs = cprm->vma_count + elf_core_extra_phdrs();
+ segs = cprm->vma_count + elf_core_extra_phdrs(cprm);
/* for notes section */
segs++;
@@ -1555,7 +1555,7 @@ static int elf_fdpic_core_dump(struct co
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) {
--- a/include/linux/elfcore.h
+++ b/include/linux/elfcore.h
@@ -114,14 +114,14 @@ static inline int elf_core_copy_task_fpr
* Dumping its extra ELF program headers includes all the other information
* a debugger needs to easily find how the gate DSO was being used.
*/
-extern Elf_Half elf_core_extra_phdrs(void);
+extern Elf_Half elf_core_extra_phdrs(struct coredump_params *cprm);
extern int
elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset);
extern int
elf_core_write_extra_data(struct coredump_params *cprm);
-extern size_t elf_core_extra_data_size(void);
+extern size_t elf_core_extra_data_size(struct coredump_params *cprm);
#else
-static inline Elf_Half elf_core_extra_phdrs(void)
+static inline Elf_Half elf_core_extra_phdrs(struct coredump_params *cprm)
{
return 0;
}
@@ -136,7 +136,7 @@ static inline int elf_core_write_extra_d
return 1;
}
-static inline size_t elf_core_extra_data_size(void)
+static inline size_t elf_core_extra_data_size(struct coredump_params *cprm)
{
return 0;
}
