3.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Will Deacon <will.deacon@xxxxxxx>
commit c0e01d5d8f15c085236df184e5bc3d79a8b700cd upstream.
struct compat_ucontext * is a 64-bit pointer, so we need to use a
compat_uptr_t instead to avoid declaring a structure incompatible with
what AArch32 userspace expects.
Reported-by: Edmund Grimley-Evans <Edmund.Grimley-Evans@xxxxxxx>
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/kernel/signal32.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/arm64/kernel/signal32.c
+++ b/arch/arm64/kernel/signal32.c
@@ -76,7 +76,7 @@ struct compat_sigcontext {
struct compat_ucontext {
compat_ulong_t uc_flags;
- struct compat_ucontext *uc_link;
+ compat_uptr_t uc_link;
compat_stack_t uc_stack;
struct compat_sigcontext uc_mcontext;
compat_sigset_t uc_sigmask;
@@ -703,7 +703,7 @@ int compat_setup_rt_frame(int usig, stru
err |= copy_siginfo_to_user32(&frame->info, info);
__put_user_error(0, &frame->sig.uc.uc_flags, err);
- __put_user_error(NULL, &frame->sig.uc.uc_link, err);
+ __put_user_error(0, &frame->sig.uc.uc_link, err);
memset(&stack, 0, sizeof(stack));
stack.ss_sp = (compat_uptr_t)current->sas_ss_sp;
--
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