linux/arch
Eric W. Biederman 82e10af224 signal/arm64: Use force_sig not force_sig_fault for SIGKILL
I don't think this is userspace visible but SIGKILL does not have
any si_codes that use the fault member of the siginfo union.  Correct
this the simple way and call force_sig instead of force_sig_fault when
the signal is SIGKILL.

The two know places where synchronous SIGKILL are generated are
do_bad_area and fpsimd_save.  The call paths to force_sig_fault are:
do_bad_area
  arm64_force_sig_fault
    force_sig_fault
force_signal_inject
  arm64_notify_die
    arm64_force_sig_fault
       force_sig_fault

Which means correcting this in arm64_force_sig_fault is enough
to ensure the arm64 code is not misusing the generic code, which
could lead to maintenance problems later.

Cc: stable@vger.kernel.org
Cc: Dave Martin <Dave.Martin@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Fixes: af40ff687b ("arm64: signal: Ensure si_code is valid for all fault signals")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2019-05-27 09:36:27 -05:00
..
alpha alpha: move arch/alpha/defconfig to arch/alpha/configs/defconfig 2019-05-18 11:49:55 +09:00
arc asm-generic: kill <asm/segment.h> and improve nommu generic uaccess helpers 2019-05-16 11:26:37 -07:00
arm Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-19 11:11:20 -07:00
arm64 signal/arm64: Use force_sig not force_sig_fault for SIGKILL 2019-05-27 09:36:27 -05:00
c6x asm-generic: kill <asm/segment.h> and improve nommu generic uaccess helpers 2019-05-16 11:26:37 -07:00
csky arch: remove dangling asm-generic wrappers 2019-05-18 11:49:52 +09:00
h8300 arch: remove dangling asm-generic wrappers 2019-05-18 11:49:52 +09:00
hexagon asm-generic: kill <asm/segment.h> and improve nommu generic uaccess helpers 2019-05-16 11:26:37 -07:00
ia64 ia64: require -Wl,--hash-style=sysv 2019-05-18 11:29:01 +09:00
m68k Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-17 09:46:31 -07:00
microblaze Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-17 09:46:31 -07:00
mips Kbuild updates for v5.2 (2nd) 2019-05-19 11:53:58 -07:00
nds32 arch: remove dangling asm-generic wrappers 2019-05-18 11:49:52 +09:00
nios2 asm-generic: kill <asm/segment.h> and improve nommu generic uaccess helpers 2019-05-16 11:26:37 -07:00
openrisc asm-generic: kill <asm/segment.h> and improve nommu generic uaccess helpers 2019-05-16 11:26:37 -07:00
parisc Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-17 09:46:31 -07:00
powerpc Merge branch 'akpm' (patches from Andrew) 2019-05-19 12:15:32 -07:00
riscv Kbuild updates for v5.2 (2nd) 2019-05-19 11:53:58 -07:00
s390 * ARM: support for SVE and Pointer Authentication in guests, PMU improvements 2019-05-17 10:33:30 -07:00
sh treewide: prefix header search paths with $(srctree)/ 2019-05-18 11:49:57 +09:00
sparc Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-17 09:46:31 -07:00
um Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-19 10:23:24 -07:00
unicore32 Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-19 10:23:24 -07:00
x86 Kbuild updates for v5.2 (2nd) 2019-05-19 11:53:58 -07:00
xtensa treewide: prefix header search paths with $(srctree)/ 2019-05-18 11:49:57 +09:00
.gitignore
Kconfig Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-16 11:00:20 -07:00