Messages in this thread Patch in this message | | | From | Vincent Whitchurch <> | Subject | [PATCH] perf: unwind: Fix symfs with libdw | Date | Fri, 25 Nov 2022 12:27:42 +0100 |
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Pass the full path including the symfs (if any) to libdw. Without this unwinding fails with errors like this when a symfs is used:
unwind: failed with 'No such file or directory'"
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com> --- tools/perf/util/unwind-libdw.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c index 94aa40f6e348..1915c9769dbe 100644 --- a/tools/perf/util/unwind-libdw.c +++ b/tools/perf/util/unwind-libdw.c @@ -66,9 +66,13 @@ static int __report_module(struct addr_location *al, u64 ip, mod = 0; } - if (!mod) - mod = dwfl_report_elf(ui->dwfl, dso->short_name, dso->long_name, -1, + if (!mod) { + char filename[PATH_MAX]; + + __symbol__join_symfs(filename, sizeof(filename), dso->long_name); + mod = dwfl_report_elf(ui->dwfl, dso->short_name, filename, -1, al->map->start - al->map->pgoff, false); + } if (!mod) { char filename[PATH_MAX]; -- 2.34.1
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