um: Fix the return value of elf_core_copy_task_fpregs

[ Upstream commit 865e3845eeaa21e9a62abc1361644e67124f1ec0 ]

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.btw@antgroup.com>
Link: https://patch.msgid.link/20240913023302.130300-1-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index c9d09d04d19df98614b40f96c8b3d1a069b1d718..83ae59f748e1fa8102086c655243bb0053ea4ac7 100644 (file)
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -396,6 +396,6 @@ int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu)
 {
        int cpu = current_thread_info()->cpu;
 
-       return save_i387_registers(userspace_pid[cpu], (unsigned long *) fpu);
+       return save_i387_registers(userspace_pid[cpu], (unsigned long *) fpu) == 0;
 }