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ARM: 8806/1: kprobes: Fix false positive with FORTIFY_SOURCE
The arm compiler internally interprets an inline assembly label as an unsigned long value, not a pointer. As a result, under CONFIG_FORTIFY_SOURCE, the address of a label has a size of 4 bytes, which was tripping the runtime checks. Instead, we can just cast the label (as done with the size calculations earlier). Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1639397 Reported-by: William Cohen <[email protected]> Fixes: 6974f0c ("include/linux/string.h: add the option of fortified string.h functions") Cc: [email protected] Acked-by: Laura Abbott <[email protected]> Acked-by: Masami Hiramatsu <[email protected]> Tested-by: William Cohen <[email protected]> Signed-off-by: Kees Cook <[email protected]> Signed-off-by: Russell King <[email protected]>
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