Masahiro Yamada
6f9ac9f442
fixdep: check return value of printf() and putchar() ...
When there is not enough space on your storage device, the build will
fail with 'No space left on device' error message.
The reason is obvious from the message, so you will free up some disk
space, then you will resume the build.
However, sometimes you may still see a mysterious error message:
unterminated call to function 'wildcard': missing ')'.
If you run out of the disk space, fixdep may end up with generating
incomplete .*.cmd files.
For example, if the disk-full error occurs while fixdep is running
print_dep(), the .*.cmd might be truncated like this:
$(wildcard include/config/
When you run 'make' next time, this broken .*.cmd will be included,
then Make will terminate parsing since it is a wrong syntax.
Once this happens, you need to run 'make clean' or delete the broken
.*.cmd file manually.
Even if you do not see any error message, the .*.cmd files after any
error could be potentially incomplete, and unreliable. You may miss
the re-compilation due to missing header dependency.
If printf() cannot output the string for disk shortage or whatever
reason, it returns a negative value, but currently fixdep does not
check it at all. Consequently, fixdep *successfully* generates a
broken .*.cmd file. Make never notices that since fixdep exits with 0,
which means success.
Given the intended usage of fixdep, it must respect the return value
of not only malloc(), but also printf() and putchar().
This seems a long-standing issue since the introduction of fixdep.
In old days, Kbuild tried to provide an extra safety by letting fixdep
output to a temporary file and renaming it after everything is done:
scripts/basic/fixdep $(depfile) $@ '$(make-cmd)' > $(dot-target).tmp;\
rm -f $(depfile); \
mv -f $(dot-target).tmp $(dot-target).cmd)
It was no help to avoid the current issue; fixdep successfully created
a truncated tmp file, which would be renamed to a .*.cmd file.
This problem should be fixed by propagating the error status to the
build system because:
[1] Since commit 9c2af1c737392885ee82
2019-07-01 10:30:39 +09:00
locking/atomics: Don't assume that scripts are executable
2019-04-19 14:21:43 +02:00
fixdep: check return value of printf() and putchar()
2019-07-01 10:30:39 +09:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 257
2019-06-05 17:30:27 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
gcc-plugins: Handle unusual header environment
2019-05-31 10:26:05 -07:00
scripts/gdb: fix invocation when CONFIG_COMMON_CLK is not set
2019-06-01 15:51:31 -07:00
genksyms: Teach parser about 128-bit built-in types
2019-06-24 03:43:03 +09:00
kconfig: tests: fix recursive inclusion unit test
2019-06-05 02:33:10 +09:00
kbuild: modversions: Fix relative CRC byte order interpretation
2019-03-28 23:46:56 +09:00
kbuild: deb-pkg: do not run headers_check
2019-06-15 19:57:02 +09:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166
2019-05-30 11:26:39 -07:00
scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore
2018-12-22 00:37:52 +09:00
kbuild: source include/config/auto.conf instead of ${KCONFIG_CONFIG}
2019-03-14 02:39:11 +09:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
bloat-o-meter: ignore __addressable_ symbols
2018-12-28 12:11:44 -08:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 391
2019-06-05 17:37:11 +02:00
bpf: fix script for generating man page on BPF helpers
2019-05-13 01:12:45 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166
2019-05-30 11:26:39 -07:00
checkpatch.pl: Update DT vendor prefix check
2019-05-22 14:54:49 -05:00
scripts/checkstack.pl: Fix arm64 wrong or unknown architecture
2019-06-05 02:33:10 +09:00
checksyscalls: fix up mq_timedreceive and stat exceptions
2019-02-19 21:27:53 +01:00
kbuild: update comment block of scripts/clang-version.sh
2019-03-04 22:34:54 +09:00
coccicheck: return proper error code on fail
2018-08-14 08:58:56 +09:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 54
2019-05-24 17:36:42 +02:00
scripts/decode_stacktrace.sh: handle RIP address with segment
2019-03-05 21:07:13 -08:00
scripts/decodecode: set ARCH when running natively on arm/arm64
2018-12-28 12:11:44 -08:00
kbuild: modules_install: warn when missing System.map file
2018-09-09 09:14:07 +09:00
scripts/documentation-file-ref-check: detect broken :doc:foo
2019-05-03 06:45:22 -06:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 209
2019-05-30 11:29:53 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378
2019-06-05 17:37:10 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 339
2019-06-05 17:37:07 +02:00
scripts/faddr2line: fix location of start_kernel in comment
2018-11-18 10:15:09 -08:00
jump_label: move 'asm goto' support test to Kconfig
2019-01-06 09:46:51 +09:00
kbuild: clean up scripts/gcc-version.sh
2019-03-04 22:35:04 +09:00
scripts: add a tool to produce a compile_commands.json file
2018-12-19 23:41:36 +09:00
kbuild: simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS
2018-12-01 23:13:14 +09:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
2019-05-24 17:36:45 +02:00
get_maintainer: allow option --mpath <directory> to read all files in <directory>
2018-08-22 10:52:48 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166
2019-05-30 11:26:39 -07:00
kbuild: simplify scripts/headers_install.sh
2019-06-15 19:57:02 +09:00
Kbuild updates for v5.1
2019-03-10 17:48:21 -07:00
kbuild: save $(strip ...) for calling if_changed and friends
2019-07-01 10:03:40 +09:00
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
kernel-doc: suppress 'not described' warnings for embedded struct fields
2019-01-16 15:04:01 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166
2019-05-30 11:26:39 -07:00
Kbuild updates for v5.2
2019-05-08 12:25:12 -07:00
kbuild: remove build_unifdef target in scripts/Makefile
2019-06-15 19:57:01 +09:00
kbuild: force all architectures except um to include mandatory-y
2019-03-17 12:56:32 +09:00
kbuild: add support for ensuring headers are self-contained
2019-06-15 19:57:02 +09:00
kbuild: remove deprecated host-progs variable
2018-08-09 21:51:17 +09:00
kbuild: Remove unnecessary -Wno-unused-value
2019-06-24 03:43:03 +09:00
gcc-plugins: structleak: Generalize to all variable types
2019-03-04 09:29:41 -08:00
kbuild: fix 'No such file or directory' warning for headers_install
2019-06-24 03:43:03 +09:00
kbuild: remove 'addtree' and 'flags' magic for header search paths
2019-05-18 11:49:57 +09:00
kasan: remove use after scope bugs detection.
2019-03-05 21:07:13 -08:00
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
kbuild: add support for ensuring headers are self-contained
2019-06-15 19:57:02 +09:00
kbuild: use $(srctree) instead of KBUILD_SRC to check out-of-tree build
2019-04-02 23:28:04 +09:00
Revert "modsign: Abort modules_install when signing fails"
2019-03-17 12:56:31 +09:00
modpost: make KBUILD_MODPOST_WARN also configurable for external modules
2019-04-11 23:11:51 +09:00
ubsan: Remove vla bound checks.
2019-05-06 11:12:09 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 373
2019-06-05 17:37:10 +02:00
kbuild: remove unnecessary in-subshell execution
2019-01-28 09:11:17 +09:00
kbuild: mkmakefile: generate a simple wrapper of top Makefile
2019-04-02 23:27:38 +09:00
kbuild: do not check name uniqueness of builtin modules
2019-05-21 08:54:05 +09:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 199
2019-05-30 11:29:23 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378
2019-06-05 17:37:10 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378
2019-06-05 17:37:10 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166
2019-05-30 11:26:39 -07:00
scripts/setlocalversion: Improve -dirty check with git-status --no-optional-locks
2018-11-21 23:57:33 +09:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 438
2019-06-05 17:37:17 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378
2019-06-05 17:37:10 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378
2019-06-05 17:37:10 +02:00
scripts: add spdxcheck.py self test
2018-12-28 12:11:44 -08:00
spdxcheck.py: fix directory structures
2019-06-01 15:51:31 -07:00
scripts/spelling.txt: add more spellings to spelling.txt
2019-03-07 18:31:59 -08:00
SPDX update for 5.2-rc3, round 1
2019-05-31 08:34:32 -07:00
selftests: add headers_install to lib.mk
2018-09-05 08:12:09 -06:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
unifdef: use memcpy instead of strncpy
2018-11-30 14:45:01 -08:00
ver_linux: Assign constant RE to variable name for clarity
2019-01-22 13:34:35 +01:00
6f9ac9f442