Re: [PATCH RFC 1/8] ftrace: Let ftrace_call_adjust() reject a patch site
From: Steven Rostedt <rostedt@goodmis.org>
Date: 2026-09-04 12:46:45
Also in:
bpf, linux-efi, linux-kbuild, live-patching, lkml, llvm, rust-for-linux
On Fri, 04 Sep 2026 01:18:33 +0000 "Jose Fernandez (Anthropic)" [off-list ref] wrote:
quoted hunk ↗ jump to hunk
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index f9d80c7bd9f16..394f82230e0c3 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c@@ -7676,6 +7676,10 @@ static int ftrace_process_locs(struct module *mod, } addr = ftrace_call_adjust(addr); + if (!addr) { + skipped++; + continue; + }
The above could use a comment to why addr could be zero (I didn't even realize some architectures do that). /* Some architectures may return zero for mis-aligned addresses */ -- Steve