kernel.git/arch/arm64/include/asm/compat.h, branch linux-4.17.y

signal: unify compat_siginfo_t

2018-01-15T23:40:31Z

--EWB Added #ifdef CONFIG_X86_X32_ABI to arch/x86/kernel/signal_compat.c Changed #ifdef CONFIG_X86_X32 to #ifdef CONFIG_X86_X32_ABI in linux/compat.h CONFIG_X86_X32 is set when the user requests X32 support. CONFIG_X86_X32_ABI is set when the user requests X32 support and the tool-chain has X32 allowing X32 support to be built. Signed-off-by: Al Viro Signed-off-by: Eric W. Biederman

signal: Remove _sys_private and _overrun_incr from struct compat_siginfo

2018-01-12T20:34:46Z

We have never passed either field to or from userspace so just remove them. Signed-off-by: "Eric W. Biederman"

fcntl: don't cap l_start and l_end values for F_GETLK64 in compat syscall

2017-11-15T13:08:36Z

Currently, we're capping the values too low in the F_GETLK64 case. The fields in that structure are 64-bit values, so we shouldn't need to do any sort of fixup there. Make sure we check that assumption at build time in the future however by ensuring that the sizes we're copying will fit. With this, we no longer need COMPAT_LOFF_T_MAX either, so remove it. Fixes: 94073ad77fff2 (fs/locks: don't mess with the address limit in compat_fcntl64) Reported-by: Vitaly Lipatov Signed-off-by: Jeff Layton Reviewed-by: David Howells

sched/headers: Prepare for new header dependencies before moving code to

2017-03-02T07:42:36Z

We are going to split out of , which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder file that just maps to to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

arm64: do not include ptrace.h from compat.h

2015-11-17T13:24:36Z

including ptrace.h brings a definition of BITS_PER_PAGE into device drivers and cause a build warning in allmodconfig builds: drivers/block/drbd/drbd_bitmap.c:482:0: warning: "BITS_PER_PAGE" redefined #define BITS_PER_PAGE (1UL << (PAGE_SHIFT + 3)) This uses a slightly different way to express current_pt_regs() that avoids the use of the header and gets away with the already included asm/ptrace.h. Signed-off-by: Arnd Bergmann Signed-off-by: Catalin Marinas

arm64: compat: Remove incorrect comment in compat_siginfo

2015-02-02T16:44:39Z

The comment was right originally but the _pad array size was wrong. It was fixed in the meantime but the comment not updated. Reported-by: Peter Maydell Signed-off-by: Catalin Marinas

arm64: add SIGSYS siginfo for compat task

2014-11-28T10:24:59Z

SIGSYS is primarily used in secure computing to notify tracer of syscall events. This patch allows signal handler on compat task to get correct information with SA_SIGINFO specified when this signal is delivered. Reviewed-by: Kees Cook Signed-off-by: AKASHI Takahiro Signed-off-by: Will Deacon

arm64: compat: fix compat types affecting struct compat_elf_prpsinfo

2014-10-20T16:47:02Z

The compat_elf_prpsinfo structure does not match the arch/arm struct elf_pspsinfo definition. As result NT_PRPSINFO note in core file created by arm64 kernel for aarch32 (compat) process has wrong size. So gdb cannot display command that caused process crash. Fix is to change size of __compat_uid_t, __compat_gid_t so it would match size of similar fields in arch/arm case. Signed-off-by: Victor Kamensky Acked-by: Arnd Bergmann Cc: Signed-off-by: Catalin Marinas

arm64: is_compat_task is defined both in asm/compat.h and linux/compat.h

2014-05-12T15:43:29Z

Some kernel files may include both linux/compat.h and asm/compat.h directly or indirectly. Since both header files contain is_compat_task() under !CONFIG_COMPAT, compiling them with !CONFIG_COMPAT will eventually fail. Such files include kernel/auditsc.c, kernel/seccomp.c and init/do_mountfs.c (do_mountfs.c may read asm/compat.h via asm/ftrace.h once ftrace is implemented). So this patch proactively 1) removes is_compat_task() under !CONFIG_COMPAT from asm/compat.h 2) replaces asm/compat.h to linux/compat.h in kernel/*.c, but asm/compat.h is still necessary in ptrace.c and process.c because they use is_compat_thread(). Acked-by: Will Deacon Signed-off-by: AKASHI Takahiro Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas

ARM64: perf: support dwarf unwinding in compat mode

2014-03-13T11:22:38Z

Add support for unwinding using the dwarf information in compat mode. Using the correct user stack pointer allows perf to record the frames correctly in the native and compat modes. Note that although the dwarf frame unwinding works ok using libunwind in native mode (on ARMv7 & ARMv8), some changes are required to the libunwind code for the compat mode. Those changes are posted separately on the libunwind mailing list. Tested on ARMv8 platform with v8 and compat v7 binaries, the latter are statically built. Signed-off-by: Jean Pihet Acked-by: Will Deacon Signed-off-by: Catalin Marinas