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x86_64: Record stack pointer before task execution begins
[firefly-linux-kernel-4.4.55.git]
/
arch
/
x86
/
kernel
/
process_64.c
diff --git
a/arch/x86/kernel/process_64.c
b/arch/x86/kernel/process_64.c
index 1fd94bc4279d60472a34feea7c792e5e70b013d8..eb54dd0fbed6f2b790c83f505504de5ff4472752 100644
(file)
--- a/
arch/x86/kernel/process_64.c
+++ b/
arch/x86/kernel/process_64.c
@@
-341,6
+341,7
@@
start_thread_common(struct pt_regs *regs, unsigned long new_ip,
loadsegment(es, _ds);
loadsegment(ds, _ds);
load_gs_index(0);
+ current->thread.usersp = new_sp;
regs->ip = new_ip;
regs->sp = new_sp;
percpu_write(old_rsp, new_sp);