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When tracepoint-update is given several files and a later file lacks these sections, the pointers from the previous, already unmapped file are used, which crashes: $ scripts/tracepoint-update --module a.o c.o AddressSanitizer: SEGV ... Reset both pointers at the start of process_tracepoints(). Kbuild currently passes a single file per invocation, so this does not affect normal builds. Fixes: e30f8e61e251 ("tracing: Add a tracepoint verification check at build time") Assisted-by: Claude:claude-opus-5-5 ASan UBSan Signed-off-by: lzhan011 --- scripts/tracepoint-update.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/scripts/tracepoint-update.c b/scripts/tracepoint-update.c index 5cf43c0aa..4c4b66901 100644 --- a/scripts/tracepoint-update.c +++ b/scripts/tracepoint-update.c @@ -163,6 +163,10 @@ static int process_tracepoints(bool mod, void *addr, const char *fname) int idx; int done = 2; + /* Do not use the sections of a previously processed file */ + check_data_sec = NULL; + tracepoint_data_sec = NULL; + shdr_start = (Elf_Shdr *)((char *)ehdr + ehdr_shoff(ehdr)); shentsize = ehdr_shentsize(ehdr); -- 2.34.1