[PATCH] i386: Kprobe rpl fix
Kprobes bugfix for paravirt compatibility - RPL on the CS when inserting
BPs must match running kernel.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andi Kleen <ak@suse.de>
CC: Eric Biederman <ebiederm@xmission.com>
diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c
index b85cfa3..b545bc7 100644
--- a/arch/i386/kernel/kprobes.c
+++ b/arch/i386/kernel/kprobes.c
@@ -408,7 +408,7 @@
spin_lock_irqsave(&kretprobe_lock, flags);
head = kretprobe_inst_table_head(current);
/* fixup registers */
- regs->xcs = __KERNEL_CS;
+ regs->xcs = __KERNEL_CS | get_kernel_rpl();
regs->eip = trampoline_address;
regs->orig_eax = 0xffffffff;