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André Draszik d6c9708737 scripts/gdb: make lx-dmesg command work (reliably) ... lx-dmesg needs access to the log_buf symbol from printk.c. Unfortunately, the symbol log_buf also exists in BPF's verifier.c and hence gdb can pick one or the other. If it happens to pick BPF's log_buf, lx-dmesg doesn't work: (gdb) lx-dmesg Python Exception <class 'gdb.MemoryError'> Cannot access memory at address 0x0: Error occurred in Python command: Cannot access memory at address 0x0 (gdb) p log_buf $15 = 0x0 Luckily, GDB has a way to deal with this, see https://sourceware.org/gdb/onlinedocs/gdb/Symbols.html (gdb) info variables ^log_buf$ All variables matching regular expression "^log_buf$": File <linux.git>/kernel/bpf/verifier.c: static char *log_buf; File <linux.git>/kernel/printk/printk.c: static char *log_buf; (gdb) p 'verifier.c'::log_buf $1 = 0x0 (gdb) p 'printk.c'::log_buf $2 = 0x811a6aa0 <__log_buf> "" (gdb) p &log_buf $3 = (char **) 0x8120fe40 <log_buf> (gdb) p &'verifier.c'::log_buf $4 = (char **) 0x8120fe40 <log_buf> (gdb) p &'printk.c'::log_buf $5 = (char **) 0x8048b7d0 <log_buf> By being explicit about the location of the symbol, we can make lx-dmesg work again. While at it, do the same for the other symbols we need from printk.c Link: http://lkml.kernel.org/r/20170526112222.3414-1-git@andred.net Signed-off-by: André Draszik <git@andred.net> Tested-by: Kieran Bingham <kieran@bingham.xyz> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		8 years ago
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basic	fixdep: faster CONFIG_ search	9 years ago
coccinelle	drm: Introduce drm_property_blob_{get,put}()	8 years ago
dtc	DeviceTree fixes for 4.12-rc:	8 years ago
gcc-plugins	Fixes a typo in sancov plugin, exposed in earlier compiler versions	8 years ago
gdb	scripts/gdb: make lx-dmesg command work (reliably)	8 years ago
genksyms	Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	8 years ago
kconfig	gconfig: remove misleading parentheses around a condition	8 years ago
ksymoops	Fix dead URLs to ftp.kernel.org	8 years ago
mod	kbuild: Consolidate header generation from ASM offset information	8 years ago
package	Kbuild misc updates for 4.12	8 years ago
selinux	selinux: include sys/socket.h in host programs to have PF_MAX	8 years ago
tracing	ftrace/scripts: Add helper script to bisect function tracing problem functions	9 years ago
.gitignore	KEYS: Reserve an extra certificate symbol for inserting without recompiling	9 years ago
Kbuild.include	Kbuild updates for v4.12	8 years ago
Lindent	scripts/Lindent: clean up and optimize	8 years ago
Makefile	GCC plugin infrastructure	9 years ago
Makefile.asm-generic	kbuild: Remove stale asm-generic wrappers	9 years ago
Makefile.build	objtool: make it visible in make V=1 output	8 years ago
Makefile.clean	Shared library support	9 years ago
Makefile.dtbinst	kbuild: dtbinst: remove unnecessary __dtbs_install_prep target	8 years ago
Makefile.extrawarn	kbuild: drop -Wno-unknown-warning-option from clang options	8 years ago
Makefile.fwinst	…
Makefile.gcc-plugins	powerpc updates for 4.11 part 1.	8 years ago
Makefile.headersinst	kbuild: skip install/check of headers right under uapi directories	8 years ago
Makefile.help	…
Makefile.host	Shared library support	9 years ago
Makefile.kasan	kasan: turn on -fsanitize-address-use-after-scope	8 years ago
Makefile.lib	devicetree: Move include prefixes from arch to separate directory	8 years ago
Makefile.modbuiltin	…
Makefile.modinst	…
Makefile.modpost	kbuild: add arch specific post-link Makefile	9 years ago
Makefile.modsign	…
Makefile.ubsan	Kbuild: enable -Wmaybe-uninitialized warning for "make W=1"	8 years ago
adjust_autoksyms.sh	kbuild: fix scripts/adjust_autoksyms.sh* for the no modules case	8 years ago
asn1_compiler.c	ASN.1: fix open failure check on headername	9 years ago
bloat-o-meter	scripts/bloat-o-meter: compile .NUMBER regex	8 years ago
bootgraph.pl	…
check-lc_ctype.c	…
check_00index.sh	scripts: add a script to check if Documentation/00-INDEX is sane	8 years ago
check_extable.sh	…
checkincludes.pl	scripts/checkincludes.pl: add exit message for no duplicates found	8 years ago
checkkconfigsymbols.py	checkkconfigsymbols.py: support Kconfig's 'imply' statement	8 years ago
checkpatch.pl	checkpatch: improve the SUSPECT_CODE_INDENT test	8 years ago
checkstack.pl	scripts: remove AVR32 support from checkstack.pl	8 years ago
checksyscalls.sh	x86/syscalls/32: Ignore arch_prctl for other architectures	8 years ago
checkversion.pl	…
cleanfile	…
cleanpatch	…
coccicheck	scripts/coccicheck: Update reference for the corresponding documentation	8 years ago
config	…
conmakehash.c	…
const_structs.checkpatch	const_structs.checkpatch: add frequently used from Julia Lawall's list	8 years ago
decode_stacktrace.sh	scripts/decode_stacktrace.sh: Fix address line detection on x86	8 years ago
decodecode	…
depmod.sh	…
diffconfig	…
docproc.c	docproc: print a comment about autogeneration for rst output	9 years ago
export_report.pl	…
extract-cert.c	…
extract-ikconfig	…
extract-module-sig.pl	…
extract-sys-certs.pl	KEYS: Use the symbol value for list size, updated by scripts/insert-sys-cert	9 years ago
extract-vmlinux	…
extract_xc3028.pl	[media] extract_xc3028.pl: move it to scripts/dir	9 years ago
faddr2line	scripts/faddr2line: Fix "size mismatch" error	8 years ago
gcc-goto.sh	…
gcc-ld	…
gcc-plugin.sh	gcc-plugins: abort builds cleanly when not supported	9 years ago
gcc-version.sh	…
gcc-x86_32-has-stack-protector.sh	…
gcc-x86_64-has-stack-protector.sh	scripts/has-stack-protector: add -fno-PIE	8 years ago
gen_initramfs_list.sh	initramfs: Escape colons in depfile	9 years ago
get_dvb_firmware	[media] doc-rst: move DVB avulse docs to Documentation/media	9 years ago
get_maintainer.pl	get_maintainer: look for arbitrary letter prefixes in sections	8 years ago
gfp-translate	…
headerdep.pl	…
headers.sh	…
headers_check.pl	headers_check: don't warn about c++ guards	9 years ago
headers_install.sh	…
insert-sys-cert.c	KEYS: Reserve an extra certificate symbol for inserting without recompiling	9 years ago
kallsyms.c	kbuild: modversions: add infrastructure for emitting relative CRCs	8 years ago
kernel-doc	scripts/kernel-doc: fix handling of parameters with parenthesis	8 years ago
kernel-doc-xml-ref	…
ld-version.sh	ld-version: Drop the 4th and 5th version components	9 years ago
link-vmlinux.sh	kbuild: minor improvement for thin archives build	8 years ago
makelst	…
markup_oops.pl	…
mkcompile_h	…
mkmakefile	…
mksysmap	…
mkuboot.sh	…
mkversion	…
module-common.lds	module: set .init_array alignment to 8	8 years ago
namespace.pl	kallsyms: add support for relative offsets in kallsyms address table	9 years ago
objdiff	scripts: objdiff: Ignore debug info when comparing	8 years ago
patch-kernel	…
pnmtologo.c	…
profile2linkerlist.pl	…
prune-kernel	scripts: add "prune-kernel" script to clean up old kernel images	9 years ago
recordmcount.c	ftrace: Allow for function tracing to record init functions on boot up	8 years ago
recordmcount.h	…
recordmcount.pl	ftrace: Allow for function tracing to record init functions on boot up	8 years ago
setlocalversion	kbuild: setlocalversion: print error to STDERR	9 years ago
show_delta	…
sign-file.c	sign-file: fix build error in sign-file.c with libressl	8 years ago
sortextable.c	powerpc: Build-time sort the exception table	8 years ago
sortextable.h	…
spelling.txt	treewide: spelling: correct diffrent[iate] and banlance typos	8 years ago
stackdelta	…
stackusage	…
tags.sh	scripts/tags.sh: include arch/Kconfig* for tags generation	8 years ago
unifdef.c	…
ver_linux	ver_linux: Use /usr/bin/awk instead of /bin/awk	8 years ago
xen-hypercalls.sh	…
xz_wrap.sh	…