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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2023-05-04 16:40:21 +0200 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2023-05-17 15:20:17 +0200 |
| commit | 6d9406f80cd82964c8ed75d482d885f18921e0b8 (patch) | |
| tree | 63d36333257d1bd7c4435fa38d5b307bac524478 /arch/s390/include/asm/compat.h | |
| parent | statfs: enforce statfs[64] structure initialization (diff) | |
| download | linux-6d9406f80cd82964c8ed75d482d885f18921e0b8.tar.xz linux-6d9406f80cd82964c8ed75d482d885f18921e0b8.zip | |
s390/uapi: cover statfs padding by growing f_spare
pahole says:
struct compat_statfs64 {
...
u32 f_spare[4]; /* 68 16 */
/* size: 88, cachelines: 1, members: 12 */
/* padding: 4 */
struct statfs {
...
unsigned int f_spare[4]; /* 68 16 */
/* size: 88, cachelines: 1, members: 12 */
/* padding: 4 */
struct statfs64 {
...
unsigned int f_spare[4]; /* 68 16 */
/* size: 88, cachelines: 1, members: 12 */
/* padding: 4 */
One has to keep the existence of padding in mind when working with
these structs. Grow f_spare arrays to 5 in order to simplify things.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/r/20230504144021.808932-3-iii@linux.ibm.com
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/compat.h')
| -rw-r--r-- | arch/s390/include/asm/compat.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h index a386070f1d56..3cb9d813f022 100644 --- a/arch/s390/include/asm/compat.h +++ b/arch/s390/include/asm/compat.h @@ -112,7 +112,7 @@ struct compat_statfs64 { u32 f_namelen; u32 f_frsize; u32 f_flags; - u32 f_spare[4]; + u32 f_spare[5]; }; /* |