]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
tracing/kprobes: Fix symbol counting logic by looking at modules as well
authorAndrii Nakryiko <andrii@kernel.org>
Thu, 11 Jan 2024 21:43:54 +0000 (22:43 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 15 Jan 2024 17:51:26 +0000 (18:51 +0100)
commit329197033bb019bf263a10b611dff89acd6a0579
tree6f17a92092625428c054683aeb9e1b24d28fd00b
parentccb7eef5f2f3ab3a4c3bb00f06933cb691e21516
tracing/kprobes: Fix symbol counting logic by looking at modules as well

commit 926fe783c8a64b33997fec405cf1af3e61aed441 upstream.

Recent changes to count number of matching symbols when creating
a kprobe event failed to take into account kernel modules. As such, it
breaks kprobes on kernel module symbols, by assuming there is no match.

Fix this my calling module_kallsyms_on_each_symbol() in addition to
kallsyms_on_each_match_symbol() to perform a proper counting.

Link: https://lore.kernel.org/all/20231027233126.2073148-1-andrii@kernel.org/
Cc: Francis Laniel <flaniel@linux.microsoft.com>
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Fixes: b022f0c7e404 ("tracing/kprobes: Return EADDRNOTAVAIL when func matches several symbols")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Markus Boehme <markubo@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kernel/trace/trace_kprobe.c