[PATCH] um: Fix the return value of elf_core_copy_task_fpregs

[Tiwei Bie]

This function is expected to return a boolean value, which should be
true on success and false on failure.

Fixes: d1254b12c93e ("uml: fix x86_64 core dump crash")
Signed-off-by: Tiwei Bie <tiwei....@antgroup.com>
---
 arch/um/kernel/process.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index be2856af6d4c..3cc2b663aa78 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -291,7 +291,8 @@ unsigned long __get_wchan(struct task_struct *p)
 int elf_core_copy_task_fpregs(struct task_struct *t, elf_fpregset_t *fpu)
 {
        int cpu = current_thread_info()->cpu;
+       int pid = userspace_pid[cpu];
 
-       return save_i387_registers(userspace_pid[cpu], (unsigned long *) fpu);
+       return save_i387_registers(pid, (unsigned long *) fpu) == 0;
 }
 
-- 
2.34.1