The patch titled Subject: UAPI: fix endianness conditionals in linux/acct.h has been added to the -mm tree. Its filename is uapi-fix-endianness-conditionals-in-linux-accth.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: David Howells <dhowells@xxxxxxxxxx> Subject: UAPI: fix endianness conditionals in linux/acct.h In the UAPI header files, __BIG_ENDIAN and __LITTLE_ENDIAN must be compared against __BYTE_ORDER in preprocessor conditionals where these are exposed to userspace (that is they're not inside __KERNEL__ conditionals). However, in the main kernel the norm is to check for "defined(__XXX_ENDIAN)" rather than comparing against __BYTE_ORDER and this has incorrectly leaked into the userspace headers. The definition of ACCT_BYTEORDER in linux/acct.h is wrong in this way. Note that userspace will likely interpret this incorrectly as the big-endian variant on little-endian machines - depending on header inclusion order. [!!!] NOTE [!!!] This patch may adversely change the userspace API. It might be better to fix the value of ACCT_BYTEORDER. Signed-off-by: David Howells <dhowells@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/uapi/linux/acct.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff -puN include/uapi/linux/acct.h~uapi-fix-endianness-conditionals-in-linux-accth include/uapi/linux/acct.h --- a/include/uapi/linux/acct.h~uapi-fix-endianness-conditionals-in-linux-accth +++ a/include/uapi/linux/acct.h @@ -107,10 +107,12 @@ struct acct_v3 #define ACORE 0x08 /* ... dumped core */ #define AXSIG 0x10 /* ... was killed by a signal */ -#ifdef __BIG_ENDIAN +#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN) #define ACCT_BYTEORDER 0x80 /* accounting file is big endian */ -#else +#elif defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN) #define ACCT_BYTEORDER 0x00 /* accounting file is little endian */ +#else +#error unspecified endianness #endif #ifndef __KERNEL__ _ Patches currently in -mm which might be from dhowells@xxxxxxxxxx are origin.patch linux-next.patch uapi-fix-endianness-conditionals-in-linux-aio_abih.patch uapi-fix-endianness-conditionals-in-linux-accth.patch uapi-fix-endianness-conditionals-in-linux-raid-md_ph.patch uapi-fix-endianness-conditionals-in-m32rs-asm-stath.patch debug_locksh-make-warning-more-verbose.patch mm-remove-free_area_cache.patch ptrace-add-ability-to-retrieve-signals-without-removing-from-a-queue-v4.patch selftest-add-a-test-case-for-ptrace_peeksiginfo.patch mutex-subsystem-synchro-test-module.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html