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If a ftrace callback does not supply its own recursion protection and does not set the RECURSION_SAFE flag in its ftrace_ops, then ftrace will make a helper trampoline to do so before calling the callback instead of just calling the callback directly. The default for ftrace_ops is going to change. It will expect that handlers provide their own recursion protection, unless its ftrace_ops states otherwise. Link: https://lkml.kernel.org/r/20201028115612.990886844@goodmis.org Link: https://lkml.kernel.org/r/20201106023546.720372267@goodmis.org Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Miroslav Benes <mbenes@suse.cz> Cc: Petr Mladek <pmladek@suse.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Thomas Meyer <thomas@m3y3r.de> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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blk.c | ||
ftrace.c | ||
inode.c | ||
internal.h | ||
Kconfig | ||
Makefile | ||
platform.c | ||
pmsg.c | ||
ram_core.c | ||
ram.c | ||
zone.c |