diff options
Diffstat (limited to 'arch/x86/kernel/process_64.c')
| -rw-r--r-- | arch/x86/kernel/process_64.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 16c6365e2b86..74aac76c6e34 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -169,7 +169,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, savesegment(ds, p->thread.ds); memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps)); - if (unlikely(!regs)) { + if (unlikely(p->flags & PF_KTHREAD)) { /* kernel thread */ memset(childregs, 0, sizeof(struct pt_regs)); childregs->sp = (unsigned long)childregs; @@ -181,10 +181,11 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, childregs->flags = X86_EFLAGS_IF | X86_EFLAGS_BIT1; return 0; } - *childregs = *regs; + *childregs = *current_pt_regs(); childregs->ax = 0; - childregs->sp = sp; + if (sp) + childregs->sp = sp; err = -ENOMEM; memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps)); |