kprobes: Prohibit probing on CFI preamble symbol

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[ Upstream commit de02f2ac5d ]

Do not allow to probe on "__cfi_" or "__pfx_" started symbol, because those
are used for CFI and not executed. Probing it will break the CFI.

Link: https://lore.kernel.org/all/168904024679.116016.18089228029322008512.stgit@devnote2/

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Masami Hiramatsu (Google) 2023-07-11 10:50:47 +09:00 • committed by Greg Kroah-Hartman

parent b702cac249

commit fc18cbdad4

1 changed files with 13 additions and 1 deletions

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kernel/kprobes.c

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