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[PATCH] i386: Kprobe rpl fix

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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>
This commit is contained in:
Zachary Amsden 2007-02-13 13:26:21 +01:00 committed by Andi Kleen
parent 7b35520243
commit ac3b6faff9
1 changed files with 1 additions and 1 deletions
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arch/i386/kernel/kprobes.c
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@ -408,7 +408,7 @@ fastcall void *__kprobes trampoline_handler(struct pt_regs *regs)
spin_lock_irqsave(&kretprobe_lock, flags); spin_lock_irqsave(&kretprobe_lock, flags);
head = kretprobe_inst_table_head(current); head = kretprobe_inst_table_head(current);
/* fixup registers */ /* fixup registers */
regs->xcs = __KERNEL_CS; regs->xcs = __KERNEL_CS | get_kernel_rpl();
regs->eip = trampoline_address; regs->eip = trampoline_address;
regs->orig_eax = 0xffffffff; regs->orig_eax = 0xffffffff;