The quilt patch titled Subject: kmemleak: add checksum to backtrace report has been removed from the -mm tree. Its filename was kmemleak-add-checksum-to-backtrace-report.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Jim Cromie <jim.cromie@xxxxxxxxx> Subject: kmemleak: add checksum to backtrace report Date: Thu, 16 Nov 2023 15:43:18 -0700 Change /sys/kernel/debug/kmemleak report format slightly, adding "(extra info)" to the backtrace header: from: " backtrace:" to: " backtrace (crc <cksum>):" The <cksum> allows a user to see recurring backtraces without detailed/careful reading of multiline stacks. So after cycling kmemleak-test a few times, I know some leaks are repeating. bash-5.2# grep backtrace /sys/kernel/debug/kmemleak | wc 62 186 1792 bash-5.2# grep backtrace /sys/kernel/debug/kmemleak | sort -u | wc 37 111 1067 syzkaller parses kmemleak for "unreferenced object" only, so is unaffected by this change. Other github repos are moribund. Link: https://lkml.kernel.org/r/20231116224318.124209-3-jim.cromie@xxxxxxxxx Signed-off-by: Jim Cromie <jim.cromie@xxxxxxxxx> Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/kmemleak.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/kmemleak.c~kmemleak-add-checksum-to-backtrace-report +++ a/mm/kmemleak.c @@ -362,7 +362,7 @@ static void print_unreferenced(struct se warn_or_seq_printf(seq, " comm \"%s\", pid %d, jiffies %lu\n", object->comm, object->pid, object->jiffies); hex_dump_object(seq, object); - warn_or_seq_printf(seq, " backtrace:\n"); + warn_or_seq_printf(seq, " backtrace (crc %x):\n", object->checksum); for (i = 0; i < nr_entries; i++) { void *ptr = (void *)entries[i]; _ Patches currently in -mm which might be from jim.cromie@xxxxxxxxx are