diff options
| -rw-r--r-- | include/linux/compat.h | 6 | ||||
| -rw-r--r-- | include/uapi/asm-generic/siginfo.h | 7 |
2 files changed, 9 insertions, 4 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h index e16d07eb08cf..d770e62632d7 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -221,6 +221,8 @@ typedef struct compat_siginfo { #ifdef __ARCH_SI_TRAPNO int _trapno; /* TRAP # which caused the signal */ #endif +#define __COMPAT_ADDR_BND_PKEY_PAD (__alignof__(compat_uptr_t) < sizeof(short) ? \ + sizeof(short) : __alignof__(compat_uptr_t)) union { /* * used when si_code=BUS_MCEERR_AR or @@ -229,13 +231,13 @@ typedef struct compat_siginfo { short int _addr_lsb; /* Valid LSB of the reported address. */ /* used when si_code=SEGV_BNDERR */ struct { - compat_uptr_t _dummy_bnd; + char _dummy_bnd[__COMPAT_ADDR_BND_PKEY_PAD]; compat_uptr_t _lower; compat_uptr_t _upper; } _addr_bnd; /* used when si_code=SEGV_PKUERR */ struct { - compat_uptr_t _dummy_pkey; + char _dummy_pkey[__COMPAT_ADDR_BND_PKEY_PAD]; u32 _pkey; } _addr_pkey; }; diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h index 4b3520bf67ba..6d789648473d 100644 --- a/include/uapi/asm-generic/siginfo.h +++ b/include/uapi/asm-generic/siginfo.h @@ -94,6 +94,9 @@ typedef struct siginfo { unsigned int _flags; /* see ia64 si_flags */ unsigned long _isr; /* isr */ #endif + +#define __ADDR_BND_PKEY_PAD (__alignof__(void *) < sizeof(short) ? \ + sizeof(short) : __alignof__(void *)) union { /* * used when si_code=BUS_MCEERR_AR or @@ -102,13 +105,13 @@ typedef struct siginfo { short _addr_lsb; /* LSB of the reported address */ /* used when si_code=SEGV_BNDERR */ struct { - void *_dummy_bnd; + char _dummy_bnd[__ADDR_BND_PKEY_PAD]; void __user *_lower; void __user *_upper; } _addr_bnd; /* used when si_code=SEGV_PKUERR */ struct { - void *_dummy_pkey; + char _dummy_pkey[__ADDR_BND_PKEY_PAD]; __u32 _pkey; } _addr_pkey; }; |