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authorFlorian Fainelli <f.fainelli@gmail.com>2023-04-06 23:52:51 +0200
committerAndrew Morton <akpm@linux-foundation.org>2023-04-19 01:39:33 +0200
commit8af055ae25bff48f57227f5e3d48a4306f3dd1c4 (patch)
tree22aad28af964aa61f2358e809b29fbfb96ea2603 /scripts/gdb
parentscripts/gdb: add a Radix Tree Parser (diff)
downloadlinux-8af055ae25bff48f57227f5e3d48a4306f3dd1c4.tar.xz
linux-8af055ae25bff48f57227f5e3d48a4306f3dd1c4.zip
scripts/gdb: raise error with reduced debugging information
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>
Diffstat (limited to 'scripts/gdb')
-rw-r--r--scripts/gdb/linux/constants.py.in2
-rw-r--r--scripts/gdb/vmlinux-gdb.py5
2 files changed, 6 insertions, 1 deletions
diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in
index 6c886deb0b18..e484e2e7e4d5 100644
--- a/scripts/gdb/linux/constants.py.in
+++ b/scripts/gdb/linux/constants.py.in
@@ -40,6 +40,8 @@
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 4a5056f2c247..2f57adcf3dff 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