| Message ID | 1532526312-26993-3-git-send-email-will.deacon@arm.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Don't use SIGMINSTKSZ when enforcing alternative signal stack size for compat tasks | expand |
On Wed, Jul 25, 2018 at 02:45:12PM +0100, Will Deacon wrote: > arch/arm/ defines a SIGMINSTKSZ of 2k, so we should use the same value > for compat tasks. > > Cc: Arnd Bergmann <arnd@arndb.de> > Cc: Dominik Brodowski <linux@dominikbrodowski.net> > Cc: "Eric W. Biederman" <ebiederm@xmission.com> > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Al Viro <viro@zeniv.linux.org.uk> > Cc: Oleg Nesterov <oleg@redhat.com> > Reported-by: Steve McIntyre <steve.mcintyre@arm.com> > Signed-off-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Dave Martin <Dave.Martin@arm.com> > --- > arch/arm64/include/asm/compat.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h > index 1a037b94eba1..cee28a05ee98 100644 > --- a/arch/arm64/include/asm/compat.h > +++ b/arch/arm64/include/asm/compat.h > @@ -159,6 +159,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr) > } > > #define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current))) > +#define COMPAT_MINSIGSTKSZ 2048 > > static inline void __user *arch_compat_alloc_user_space(long len) > { > -- > 2.1.4 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h index 1a037b94eba1..cee28a05ee98 100644 --- a/arch/arm64/include/asm/compat.h +++ b/arch/arm64/include/asm/compat.h @@ -159,6 +159,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr) } #define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current))) +#define COMPAT_MINSIGSTKSZ 2048 static inline void __user *arch_compat_alloc_user_space(long len) {
arch/arm/ defines a SIGMINSTKSZ of 2k, so we should use the same value for compat tasks. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Oleg Nesterov <oleg@redhat.com> Reported-by: Steve McIntyre <steve.mcintyre@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> --- arch/arm64/include/asm/compat.h | 1 + 1 file changed, 1 insertion(+) -- 2.1.4