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-rw-r--r--arch/um/sys-x86_64/syscalls.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c
index 01b91f9fa78..b3f6350cac4 100644
--- a/arch/um/sys-x86_64/syscalls.c
+++ b/arch/um/sys-x86_64/syscalls.c
@@ -103,6 +103,9 @@ long arch_prctl_skas(struct task_struct *task, int code,
switch(code){
case ARCH_SET_FS:
+ current->thread.arch.fs = (unsigned long) ptr;
+ save_registers(pid, &current->thread.regs.regs);
+ break;
case ARCH_SET_GS:
save_registers(pid, &current->thread.regs.regs);
break;
@@ -140,9 +143,8 @@ long sys_clone(unsigned long clone_flags, unsigned long newsp,
void arch_switch_to_skas(struct task_struct *from, struct task_struct *to)
{
- if(to->thread.arch.fs == 0)
+ if((to->thread.arch.fs == 0) || (to->mm == NULL))
return;
arch_prctl_skas(to, ARCH_SET_FS, (void __user *) to->thread.arch.fs);
}
-