This is a note to let you know that I've just added the patch titled
scripts/gdb: raise error with reduced debugging information
to the 6.2-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:
scripts-gdb-raise-error-with-reduced-debugging-infor.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7381ec5b18eb7dc1c21d3a85763eed2effdffbde
Author: Florian Fainelli <f.fainelli@xxxxxxxxx>
Date: Thu Apr 6 14:52:51 2023 -0700
scripts/gdb: raise error with reduced debugging information
[ 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@xxxxxxxxx
Fixes: e3c8d33e0d62 ("scripts/gdb: fix 'lx-dmesg' on 32 bits arch")
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Cc: Antonio Borneo <antonio.borneo@xxxxxxxxxxx>
Cc: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Cc: John Ogness <john.ogness@xxxxxxxxxxxxx>
Cc: Kieran Bingham <kbingham@xxxxxxxxxx>
Cc: Petr Mladek <pmladek@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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 3e8d3669f0ce0..5564ffe8ae327 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
