Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [PATCH] uprobes/x86: allow to probe a "nop" insn with 0x66 prefix | Date | Fri, 02 Dec 2022 12:52:16 +0100 |
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On Thu, Dec 01 2022 at 15:26, Oleg Nesterov wrote:
> From: Denys Vlasenko <dvlasenk@redhat.com> > > Intel icc -hotpatch inserts 2-byte "0x66 0x90" NOP at the start of each > function to reserve extra space for hot-patching, and currently it is not > possible to probe these functions because branch_setup_xol_ops() wrongly > nacks NOP with REP prefix. > > Fixes: 250bbd12c2fe ("uprobes/x86: Refuse to attach uprobe to "word-sized" branch insns") > Reported-by: Seiji Nishikawa <snishika@redhat.com> > Signed-off-by: Oleg Nesterov <oleg@redhat.com>
The SOB chain is invalid as it lacks the author's signoff.
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