From: Florian Fainelli f.fainelli@gmail.com
[ Upstream commit 8af055ae25bff48f57227f5e3d48a4306f3dd1c4 ]
If CONFIG_DEBUG_INFO_REDUCED is enabled in the kernel configuration, we will typically not be able to load vmlinux-gdb.py and will fail with:
Traceback (most recent call last): File "/home/fainelli/work/buildroot/output/arm64/build/linux-custom/vmlinux-gdb.py", line 25, in <module> import linux.utils File "/home/fainelli/work/buildroot/output/arm64/build/linux-custom/scripts/gdb/linux/utils.py", line 131, in <module> atomic_long_counter_offset = atomic_long_type.get_type()['counter'].bitpos KeyError: 'counter'
Rather be left wondering what is happening only to find out that reduced debug information is the cause, raise an eror. This was not typically a problem until e3c8d33e0d62 ("scripts/gdb: fix 'lx-dmesg' on 32 bits arch") but it has since then.
Link: https://lkml.kernel.org/r/20230406215252.1580538-1-f.fainelli@gmail.com Fixes: e3c8d33e0d62 ("scripts/gdb: fix 'lx-dmesg' on 32 bits arch") Signed-off-by: Florian Fainelli f.fainelli@gmail.com Cc: Antonio Borneo antonio.borneo@foss.st.com Cc: Jan Kiszka jan.kiszka@siemens.com Cc: John Ogness john.ogness@linutronix.de Cc: Kieran Bingham kbingham@kernel.org Cc: Petr Mladek pmladek@suse.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- scripts/gdb/linux/constants.py.in | 2 ++ scripts/gdb/vmlinux-gdb.py | 5 ++++- 2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in index 2efbec6b6b8db..08f0587d15ea1 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -39,6 +39,8 @@
import gdb
+LX_CONFIG(CONFIG_DEBUG_INFO_REDUCED) + /* linux/clk-provider.h */ if IS_BUILTIN(CONFIG_COMMON_CLK): LX_GDBPARSED(CLK_GET_RATE_NOCACHE) diff --git a/scripts/gdb/vmlinux-gdb.py b/scripts/gdb/vmlinux-gdb.py index 3a5b44cd6bfe4..7e024c051e77f 100644 --- a/scripts/gdb/vmlinux-gdb.py +++ b/scripts/gdb/vmlinux-gdb.py @@ -22,6 +22,10 @@ except: gdb.write("NOTE: gdb 7.2 or later required for Linux helper scripts to " "work.\n") else: + import linux.constants + if linux.constants.LX_CONFIG_DEBUG_INFO_REDUCED: + raise gdb.GdbError("Reduced debug information will prevent GDB " + "from having complete types.\n") import linux.utils import linux.symbols import linux.modules @@ -32,7 +36,6 @@ else: import linux.lists import linux.rbtree import linux.proc - import linux.constants import linux.timerlist import linux.clk import linux.genpd