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Commit d05ea35e authored by Rafael Mendonca's avatar Rafael Mendonca Committed by Masami Hiramatsu (Google)
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fprobe: Check rethook_alloc() return in rethook initialization

Check if fp->rethook succeeded to be allocated. Otherwise, if
rethook_alloc() fails, then we end up dereferencing a NULL pointer in
rethook_add_node().

Link: https://lore.kernel.org/all/20221025031209.954836-1-rafaelmendsr@gmail.com/



Fixes: 5b0ab789 ("fprobe: Add exit_handler support")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarRafael Mendonca <rafaelmendsr@gmail.com>
Acked-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: default avatarMasami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: default avatarMasami Hiramatsu (Google) <mhiramat@kernel.org>
parent 4a6f316d
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