Commit ac3b6faf authored by Zachary Amsden's avatar Zachary Amsden Committed by Andi Kleen

[PATCH] i386: Kprobe rpl fix

Kprobes bugfix for paravirt compatibility - RPL on the CS when inserting
BPs must match running kernel.
Signed-off-by: default avatarZachary Amsden <zach@vmware.com>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
CC: Eric Biederman <ebiederm@xmission.com>
parent 7b355202
...@@ -408,7 +408,7 @@ fastcall void *__kprobes trampoline_handler(struct pt_regs *regs) ...@@ -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;
......
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