4.9-stable review patch. If anyone has any objections, please let me know.
------------------ From: Ravi Bangoria <[email protected]> commit edee44be59190bf22d5c6e521f3852b7ff16862f upstream. 'perf report --tui' exits with error when it finds a sample of zero length symbol (i.e. addr == sym->start == sym->end). Actually these are valid samples. Don't exit TUI and show report with such symbols. Reported-and-Tested-by: Anton Blanchard <[email protected]> Link: https://lkml.org/lkml/2016/10/8/189 Signed-off-by: Ravi Bangoria <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Chris Riyder <[email protected]> Cc: [email protected] Cc: Masami Hiramatsu <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Nicholas Piggin <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/1479804050-5028-1-git-send-email-ravi.bango...@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- tools/perf/util/annotate.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -593,7 +593,8 @@ static int __symbol__inc_addr_samples(st pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr)); - if (addr < sym->start || addr >= sym->end) { + if ((addr < sym->start || addr >= sym->end) && + (addr != sym->end || sym->start != sym->end)) { pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__, __LINE__, sym->name, sym->start, addr, sym->end); return -ERANGE;
