This is a note to let you know that I've just added the patch titled perf symbols: Fix dso__fprintf_symbols_by_name() to return the number of printed chars to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: perf-symbols-fix-dso__fprintf_symbols_by_name-to-ret.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit fac1699d123dcdec0262239e6a8acd17aafef0f8 Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Date: Mon Mar 8 11:17:51 2021 -0300 perf symbols: Fix dso__fprintf_symbols_by_name() to return the number of printed chars [ Upstream commit 210e4c89ef61432040c6cd828fefa441f4887186 ] The 'ret' variable was initialized to zero but then it was not updated from the fprintf() return, fix it. Reported-by: Yang Li <yang.lee@xxxxxxxxxxxxxxxxx> cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx> cc: Ingo Molnar <mingo@xxxxxxxxxx> cc: Jiri Olsa <jolsa@xxxxxxxxxx> cc: Mark Rutland <mark.rutland@xxxxxxx> cc: Namhyung Kim <namhyung@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx> Fixes: 90f18e63fbd00513 ("perf symbols: List symbols in a dso in ascending name order") Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/tools/perf/util/symbol_fprintf.c b/tools/perf/util/symbol_fprintf.c index 35c936ce33ef..2664fb65e47a 100644 --- a/tools/perf/util/symbol_fprintf.c +++ b/tools/perf/util/symbol_fprintf.c @@ -68,7 +68,7 @@ size_t dso__fprintf_symbols_by_name(struct dso *dso, for (nd = rb_first_cached(&dso->symbol_names); nd; nd = rb_next(nd)) { pos = rb_entry(nd, struct symbol_name_rb_node, rb_node); - fprintf(fp, "%s\n", pos->sym.name); + ret += fprintf(fp, "%s\n", pos->sym.name); } return ret;