Re: faddr2line issue

From: John Garry
Date: Tue Jul 19 2022 - 11:24:49 EST


On 14/07/2022 17:41, Josh Poimboeuf wrote:
On Thu, Jul 14, 2022 at 10:57:51AM +0100, John Garry wrote:
On 08/07/2022 15:47, John Garry wrote:

+

JFYI, This issue is caused by CONFIG_DEBUG_INFO now being default off in my
.config from commit f9b3cd245784 ("Kconfig.debug: make DEBUG_INFO selectable
from a choice").

By enabling that config faddr2line now looks ok again.

BTW, Could we add a check for any kernel dependency in this tool?
Hi John,

The script doesn't know how to reliably find the .config file, but it
should be able to check for missing DWARF in the binary itself.

Hi Josh,

So adding config DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT to v5.19-rc2 got it working again for me on arm64. However commit dcea997beed6 ("faddr2line: Fix overlapping text section failures, the sequel") seems to be broken for me, below - this first appeared in rc3. Any idea what the issue could be?

$./faddr.sh hisi_sas_sata_done+0x8/0x38
hisi_sas_sata_done+0x8/0x38:
fs mm ??:0

Thanks,
John