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2021-02-23Merge tag 'modules-for-v5.12' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux Pull module updates from Jessica Yu: - Retire EXPORT_UNUSED_SYMBOL() and EXPORT_SYMBOL_GPL_FUTURE(). These export types were introduced between 2006 - 2008. All the of the unused symbols have been long removed and gpl future symbols were converted to gpl quite a long time ago, and I don't believe these export types have been used ever since. So, I think it should be safe to retire those export types now (Christoph Hellwig) - Refactor and clean up some aged code cruft in the module loader (Christoph Hellwig) - Build {,module_}kallsyms_on_each_symbol only when livepatching is enabled, as it is the only caller (Christoph Hellwig) - Unexport find_module() and module_mutex and fix the last module callers to not rely on these anymore. Make module_mutex internal to the module loader (Christoph Hellwig) - Harden ELF checks on module load and validate ELF structures before checking the module signature (Frank van der Linden) - Fix undefined symbol warning for clang (Fangrui Song) - Fix smatch warning (Dan Carpenter) * tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: module: potential uninitialized return in module_kallsyms_on_each_symbol() module: remove EXPORT_UNUSED_SYMBOL* module: remove EXPORT_SYMBOL_GPL_FUTURE module: move struct symsearch to module.c module: pass struct find_symbol_args to find_symbol module: merge each_symbol_section into find_symbol module: remove each_symbol_in_section module: mark module_mutex static kallsyms: only build {,module_}kallsyms_on_each_symbol when required kallsyms: refactor {,module_}kallsyms_on_each_symbol module: use RCU to synchronize find_module module: unexport find_module and module_mutex drm: remove drm_fb_helper_modinit powerpc/powernv: remove get_cxl_module module: harden ELF info handling module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols
2021-02-12Merge branch 'linus' into locking/core, to pick up upstream fixesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2021-02-10checkpatch: Don't check for mutex_trylock_recursive()Sebastian Andrzej Siewior
mutex_trylock_recursive() has been removed from the tree, there is no need to check for it. Remove traces of mutex_trylock_recursive()'s existence. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20210210085248.219210-3-bigeasy@linutronix.de
2021-02-08module: remove EXPORT_UNUSED_SYMBOL*Christoph Hellwig
EXPORT_UNUSED_SYMBOL* is not actually used anywhere. Remove the unused functionality as we generally just remove unused code anyway. Reviewed-by: Miroslav Benes <mbenes@suse.cz> Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jessica Yu <jeyu@kernel.org>
2021-01-28Revert "checkpatch: add check for keyword 'boolean' in Kconfig definitions"Masahiro Yamada
This reverts commit 327953e9af6c59ad111b28359e59e3ec0cbd71b6. You cannot use 'boolean' since commit b92d804a5179 ("kconfig: drop 'boolean' keyword"). This check is no longer needed. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Joe Perches <joe@perches.com>
2020-12-29checkpatch: prefer strscpy to strlcpyJoe Perches
Prefer strscpy over the deprecated strlcpy function. Link: https://lkml.kernel.org/r/19fe91084890e2c16fe56f960de6c570a93fa99b.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Requested-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: add printk_once and printk_ratelimit to prefer pr_<level> warningJoe Perches
Add the _once and _ratelimited variants to the test for printk(KERN_<LEVEL> that should prefer pr_<level>. Miscellanea: o Add comment description for the conversions [joe@perches.com: fixlet] Link: https://lkml.kernel.org/r/32260871d4718ba7f48a8e9e07452bb76de300db.camel@perches.comLink: https://lkml.kernel.org/r/993b72b2ef91a57c5e725b52971ce3fd31375061.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: fix TYPO_SPELLING check for words with apostropheDwaipayan Ray
checkpatch reports a false TYPO_SPELLING warning for some words containing an apostrophe when run with --codespell option. A false positive is "doesn't". Occurrence of the word causes checkpatch to emit the following warning: "WARNING: 'doesn'' may be misspelled - perhaps 'doesn't'?" Modify the regex pattern to be more in line with the codespell default word matching regex. This fixes the word capture and avoids the false warning. In addition, highlight the misspelled word location by adding a caret below the word. [akpm@linux-foundation.org: make matched misspelling more obvious, per Joe] Link: https://lkml.kernel.org/r/09c24ef1aa2f1c4fe909d76f5426f08780b9d81c.camel@perches.com Link: https://lkml.kernel.org/r/20201201190729.169733-1-dwaipayanray1@gmail.com Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Suggested-by: Joe Perches <joe@perches.com> Reported-by: Peilin Ye <yepeilin.cs@gmail.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: add warning for lines starting with a '#' in commit logDwaipayan Ray
Commit log lines starting with '#' are dropped by git as comments. Add a check to emit a warning for these lines. Also add a --fix option to insert a space before the leading '#' in such lines. Link: https://lkml.kernel.org/r/20201202205740.127986-1-dwaipayanray1@gmail.com Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Suggested-by: Joe Perches <joe@perches.com> Suggested-by: Peilin Ye <yepeilin.cs@gmail.com> Tested-by: Peilin Ye <yepeilin.cs@gmail.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: add warning for unnecessary use of %h[xudi] and %hh[xudi]Dwaipayan Ray
Modifiers %h and %hh should never be used. Commit cbacb5ab0aa0 ("docs: printk-formats: Stop encouraging use of unnecessary %h[xudi] and %hh[xudi]") specifies that: "Standard integer promotion is already done and %hx and %hhx is useless so do not encourage the use of %hh[xudi] or %h[xudi]." "The "h" and "hh" things should never be used. The only reason for them being used if you have an "int", but you want to print it out as a "char" (and honestly, that is a really bad reason, you'd be better off just using a proper cast to make the code more obvious)." Add a new check to emit a warning on finding an unneeded use of %h or %hh modifier. Also add a fix option to the check. Link: https://lore.kernel.org/lkml/4910042649a4f3ab22fac93191b8c1fa0a2e17c3.camel@perches.com/ Link: https://lkml.kernel.org/r/20201128200046.78739-1-dwaipayanray1@gmail.com Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Suggested-by: Joe Perches <joe@perches.com> Suggested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: add fix and improve warning msg for non-standard signatureAditya Srivastava
Currently checkpatch warns for BAD_SIGN_OFF on non-standard signature styles. A large number of these warnings occur because of typo mistakes in signature tags. An evaluation over v4.13..v5.8 showed that out of 539 warnings due to non-standard signatures, 87 are due to typo mistakes. Following are the standard signature tags which are often incorrectly used, along with their individual counts of incorrect use (over v4.13..v5.8): Reviewed-by: 42 Signed-off-by: 25 Reported-by: 6 Acked-by: 4 Tested-by: 4 Suggested-by: 4 Provide a fix by calculating levenshtein distance for the signature tag with all the standard signatures and suggest a fix with a signature, whose edit distance is less than or equal to 2 with the misspelled signature. Out of the 86 mispelled signatures fixed with this approach, 85 were found to be good corrections and 1 was bad correction. Following was found to be a bad correction: Tweeted-by (count: 1) => Tested-by Link: https://lkml.kernel.org/r/20201128204333.7054-1-yashsri421@gmail.com Signed-off-by: Aditya Srivastava <yashsri421@gmail.com> Acked-by: Joe Perches <joe@perches.com> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: add fix option for LOGICAL_CONTINUATIONSAditya Srivastava
Currently, checkpatch warns if logical continuations are placed at the start of a line and not at the end of previous line. E.g., running checkpatch on commit 3485507fc272 ("staging: bcm2835-camera: Reduce length of enum names") reports: CHECK:LOGICAL_CONTINUATIONS: Logical continuations should be on the previous line + if (!ret + && camera_port == Provide a simple fix by inserting logical operator at the last non-comment, non-whitespace char of the previous line and removing from current line, if both the lines are additions(ie start with '+') Link: https://lkml.kernel.org/r/20201123102818.24364-1-yashsri421@gmail.com Signed-off-by: Aditya Srivastava <yashsri421@gmail.com> Acked-by: Joe Perches <joe@perches.com> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: add fix option for ASSIGNMENT_CONTINUATIONSAditya Srivastava
Currently, checkpatch warns us if an assignment operator is placed at the start of a line and not at the end of previous line. E.g., running checkpatch on commit 8195b1396ec8 ("hv_netvsc: fix deadlock on hotplug") reports: CHECK: Assignment operator '=' should be on the previous line + struct netvsc_device *nvdev + = container_of(w, struct netvsc_device, subchan_work); Provide a simple fix by appending assignment operator to the previous line and removing from the current line, if both the lines are additions (ie start with '+') Link: https://lkml.kernel.org/r/20201121120407.22942-1-yashsri421@gmail.com Signed-off-by: Aditya Srivastava <yashsri421@gmail.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: fix unescaped left braceDwaipayan Ray
There is an unescaped left brace in a regex in OPEN_BRACE check. This throws a runtime error when checkpatch is run with --fix flag and the OPEN_BRACE check is executed. Fix it by escaping the left brace. Link: https://lkml.kernel.org/r/20201115202928.81955-1-dwaipayanray1@gmail.com Fixes: 8d1824780f2f ("checkpatch: add --fix option for a couple OPEN_BRACE misuses") Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: avoid COMMIT_LOG_LONG_LINE warning for signature tagsAditya Srivastava
Currently checkpatch warns us for long lines in commits even for signature tag lines. Generally these lines exceed the 75-character limit because of: 1) long names and long email address 2) some comments on scoped review and acknowledgement, i.e., for a dedicated pointer on what was reported by the identity in 'Reported-by' 3) some additional comments on CC: stable@vger.org tags Exclude signature tag lines from this class of warning. There were 1896 COMMIT_LOG_LONG_LINE warnings in v5.6..v5.8 before this patch application and 1879 afterwards. A quick manual check found all the dropped warnings related to signature tags. Link: https://lkml.kernel.org/r/20201116083754.10629-1-yashsri421@gmail.com Signed-off-by: Aditya Srivastava <yashsri421@gmail.com> Acked-by: Joe Perches <joe@perches.com> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: fix spelling errors and remove repeated wordDwaipayan Ray
Delete repeated word in scripts/checkpatch.pl: "are are" -> "are" Fix typos: "commments" -> "comments" "falsly" -> "falsely" Link: https://lkml.kernel.org/r/20201113152316.62975-1-dwaipayanray1@gmail.com Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: improve email parsingDwaipayan Ray
checkpatch doesn't report warnings for many common mistakes in emails. Some of which are trailing commas and incorrect use of email comments. At the same time several false positives are reported due to incorrect handling of mail comments. The most common of which is due to the pattern: <stable@vger.kernel.org> # X.X Improve email parsing in checkpatch. Some general email rules are defined: - Multiple name comments should not be allowed. - Comments inside address should not be allowed. - In general comments should be enclosed within parentheses. Relaxation is given to comments beginning with #. - Stable addresses should not begin with a name. - Comments in stable addresses should begin only with a #. Improvements to parsing: - Detect and report unexpected content after email. - Quoted names are excluded from comment parsing. - Trailing dots, commas or quotes in email are removed during formatting. Correspondingly a BAD_SIGN_OFF warning is emitted. - Improperly quoted email like '"name <address>"' are now warned about. In addition, added fixes for all the possible rules. Link: https://lore.kernel.org/linux-kernel-mentees/6c275d95c3033422addfc256a30e6ae3dd37941d.camel@perches.com/ Link: https://lore.kernel.org/linux-kernel-mentees/20201105200857.GC1333458@kroah.com/ Link: https://lkml.kernel.org/r/20201108100632.75340-1-dwaipayanray1@gmail.com Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Suggested-by: Joe Perches <joe@perches.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: add __alias and __weak to suggested __attribute__ conversionsJoe Perches
Add __alias and __weak to the suggested __attribute__((<foo>)) conversions. Link: https://lkml.kernel.org/r/7b74137743c58ce0633ec4d575b94e2210e4dbe7.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Dwaipayan Ray <dwaipayanray1@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: add fix option for GERRIT_CHANGE_IDAditya Srivastava
Currently, whenever a Gerrit Change-Id is present in a commit, checkpatch.pl warns to remove the Change-Id before submitting the patch. E.g., running checkpatch on commit adc311a5bbf6 ("iwlwifi: bump FW API to 53 for 22000 series") reports this error: ERROR: Remove Gerrit Change-Id's before submitting upstream Change-Id: I5725e46394f3f53c3069723fd513cc53c7df383d Provide a simple fix option by simply deleting the indicated line. Link: https://lkml.kernel.org/r/20201030114447.24199-1-yashsri421@gmail.com Signed-off-by: Aditya Srivastava <yashsri421@gmail.com> Acked-by: Joe Perches <joe@perches.com> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: update __attribute__((section("name"))) quote removalJoe Perches
commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")") removed the stringification of the section name and now requires quotes around the named section. Update checkpatch to not remove any quotes when suggesting conversion of __attribute__((section("name"))) to __section("name") Miscellanea: o Add section to the hash with __section replacement o Remove separate test for __attribute__((section o Remove the limitation on converting attributes containing only known, possible conversions. Any unknown attribute types are now left as-is and known types are converted and moved before __attribute__ and removed from within the __attribute__((list...)). [joe@perches.com: eliminate the separate test below the possible conversions loop] Link: https://lkml.kernel.org/r/58e9d55e933dc8fdc6af489f2ad797fa8eb13e44.camel@perches.com Link: https://lkml.kernel.org/r/c04dd1c810e8d6a68e6a632e3191ae91651c8edf.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Dwaipayan Ray <dwaipayanray1@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: add a fixer for missing newline at eofTom Rix
Remove the trailing error message from the fixed lines. Link: https://lkml.kernel.org/r/20201017142546.28988-1-trix@redhat.com Signed-off-by: Tom Rix <trix@redhat.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: extend attributes check to handle more patternsDwaipayan Ray
It is generally preferred that the macros from include/linux/compiler_attributes.h are used, unless there is a reason not to. checkpatch currently checks __attribute__ for each of packed, aligned, section, printf, scanf, and weak. Other declarations in compiler_attributes.h are not handled. Add a generic test to check the presence of such attributes. Some attributes require more specific handling and are kept separate. Also add fixes to the generic attributes check to substitute the correct conversions. New attributes which are now handled are: __always_inline__ __assume_aligned__(a, ## __VA_ARGS__) __cold__ __const__ __copy__(symbol) __designated_init__ __externally_visible__ __gnu_inline__ __malloc__ __mode__(x) __no_caller_saved_registers__ __noclone__ __noinline__ __nonstring__ __noreturn__ __pure__ __unused__ __used__ Declarations which contain multiple attributes like __attribute__((__packed__, __cold__)) are also handled except when proper conversions for one or more attributes of the list cannot be determined. Link: https://lore.kernel.org/linux-kernel-mentees/3ec15b41754b01666d94b76ce51b9832c2dd577a.camel@perches.com/ Link: https://lkml.kernel.org/r/20201025193103.23223-1-dwaipayanray1@gmail.com Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Suggested-by: Joe Perches <joe@perches.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: allow --fix removal of unnecessary break statementsJoe Perches
switch/case use of break after a return, goto or break is unnecessary. There is an existing warning for the return and goto uses, so add break and a --fix option too. Link: https://lkml.kernel.org/r/d9ea654104d55f590fb97d252d64a66b23c1a096.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Julia Lawall <julia.lawall@inria.fr> Cc: Tom Rix <trix@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: prefer static const declarationsJoe Perches
There are about 100,000 uses of 'static const <type>' but about 400 uses of 'static <type> const' in the kernel where type is not a pointer. The kernel almost always uses "static const" over "const static" as there is a compiler warning for that declaration style. But there is no compiler warning for "static <type> const". So add a checkpatch warning for the atypical declaration uses of. const static <type> <foo> and static <type> const <foo> For example: $ ./scripts/checkpatch.pl -f --emacs --quiet --nosummary -types=static_const arch/arm/crypto/aes-ce-glue.c arch/arm/crypto/aes-ce-glue.c:75: WARNING: Move const after static - use 'static const u8' #75: FILE: arch/arm/crypto/aes-ce-glue.c:75: + static u8 const rcon[] = { Link: https://lkml.kernel.org/r/4b863be68e679546b40d50b97a4a806c03056a1c.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: ignore generated CamelCase defines and enum valuesŁukasz Stelmach
Ignore autogenerated CamelCase-like defines and enum values like DRM_MODE_CONNECTOR_Unknown or ETHTOOL_LINK_MODE_Asym_Pause_BIT. Link: https://lkml.kernel.org/r/20201022184916.7904-1-l.stelmach@samsung.com Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com> Suggested-by: Joe Perches <joe@perches.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: fix false positives in REPEATED_WORD warningAditya Srivastava
Presence of hexadecimal address or symbol results in false warning message by checkpatch.pl. For example, running checkpatch on commit b8ad540dd4e4 ("mptcp: fix memory leak in mptcp_subflow_create_socket()") results in warning: WARNING:REPEATED_WORD: Possible repeated word: 'ff' 00 00 00 00 00 00 00 00 00 2f 30 0a 81 88 ff ff ........./0..... Similarly, the presence of list command output in commit results in an unnecessary warning. For example, running checkpatch on commit 899e5ffbf246 ("perf record: Introduce --switch-output-event") gives: WARNING:REPEATED_WORD: Possible repeated word: 'root' dr-xr-x---. 12 root root 4096 Apr 27 17:46 .. Here, it reports 'ff' and 'root' to be repeated, but it is in fact part of some address or code, where it has to be repeated. In these cases, the intent of the warning to find stylistic issues in commit messages is not met and the warning is just completely wrong in this case. To avoid these warnings, add an additional regex check for the directory permission pattern and avoid checking the line for this class of warning. Similarly, to avoid hex pattern, check if the word consists of hex symbols and skip this warning if it is not among the common english words formed using hex letters. A quick evaluation on v5.6..v5.8 showed that this fix reduces REPEATED_WORD warnings by the frequency of 1890. A quick manual check found all cases are related to hex output or list command outputs in commit messages. Link: https://lkml.kernel.org/r/20201024102253.13614-1-yashsri421@gmail.com Signed-off-by: Aditya Srivastava <yashsri421@gmail.com> Acked-by: Joe Perches <joe@perches.com> Cc: Dwaipayan Ray <dwaipayanray1@gmail.com> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15checkpatch: add new exception to repeated word checkDwaipayan Ray
Recently, commit 4f6ad8aa1eac ("checkpatch: move repeated word test") moved the repeated word test to check for more file types. But after this, if checkpatch.pl is run on MAINTAINERS, it generates several new warnings of the type: WARNING: Possible repeated word: 'git' For example: WARNING: Possible repeated word: 'git' +T: git git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml.git So, the pattern "git git://..." is a false positive in this case. There are several other combinations which may produce a wrong warning message, such as "@size size", ":Begin begin", etc. Extend repeated word check to compare the characters before and after the word matches. If there is a non whitespace character before the first word or a non whitespace character excluding punctuation characters after the second word, then the check is skipped and the warning is avoided. Also add case insensitive word matching to the repeated word check. Link: https://lore.kernel.org/linux-kernel-mentees/81b6a0bb2c7b9256361573f7a13201ebcd4876f1.camel@perches.com/ Link: https://lkml.kernel.org/r/20201017162732.152351-1-dwaipayanray1@gmail.com Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Suggested-by: Joe Perches <joe@perches.com> Suggested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Acked-by: Joe Perches <joe@perches.com> Cc: Aditya Srivastava <yashsri421@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-25checkpatch: enable GIT_DIR environment use to set git repository locationJoe Perches
If set, use the environment variable GIT_DIR to change the default .git location of the kernel git tree. If GIT_DIR is unset, keep using the current ".git" default. Link: https://lkml.kernel.org/r/c5e23b45562373d632fccb8bc04e563abba4dd1d.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16checkpatch: add new warnings to author signoff checks.Dwaipayan Ray
The author signed-off-by checks are currently very vague. Cases like same name or same address are not handled separately. For example, running checkpatch on commit be6577af0cef ("parisc: Add atomic64_set_release() define to avoid CPU soft lockups"), gives: WARNING: Missing Signed-off-by: line by nominal patch author 'John David Anglin <dave.anglin@bell.net>' The signoff line was: "Signed-off-by: Dave Anglin <dave.anglin@bell.net>" Clearly the author has signed off but with a slightly different version of his name. A more appropriate warning would have been to point out at the name mismatch instead. Previously, the values assumed by $authorsignoff were either 0 or 1 to indicate whether a proper sign off by author is present. Extended the checks to handle four new cases. $authorsignoff values now denote the following: 0: Missing sign off by patch author. 1: Sign off present and identical. 2: Addresses and names match, but comments differ. "James Watson(JW) <james@gmail.com>", "James Watson <james@gmail.com>" 3: Addresses match, but names are different. "James Watson <james@gmail.com>", "James <james@gmail.com>" 4: Names match, but addresses are different. "James Watson <james@watson.com>", "James Watson <james@gmail.com>" 5: Names match, addresses excluding subaddress details (RFC 5233) match. "James Watson <james@gmail.com>", "James Watson <james+a@gmail.com>" Also introduced a new message type FROM_SIGN_OFF_MISMATCH for cases 2, 3, 4 and 5. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Joe Perches <joe@perches.com> Link: https://lore.kernel.org/linux-kernel-mentees/c1ca28e77e8e3bfa7aadf3efa8ed70f97a9d369c.camel@perches.com/ Link: https://lkml.kernel.org/r/20201007192029.551744-1-dwaipayanray1@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16checkpatch: fix false positive on empty block comment linesŁukasz Stelmach
To avoid false positives in presence of SPDX-License-Identifier in networking files it is required to increase the leeway for empty block comment lines by one line. For example, checking drivers/net/loopback.c which starts with // SPDX-License-Identifier: GPL-2.0-or-later /* * INET An implementation of the TCP/IP protocol suite for the LINUX rsults in an unnecessary warning WARNING: networking block comments don't use an empty /* line, use /* Comment... +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Joe Perches <joe@perches.com> Cc: Bartłomiej Żolnierkiewicz <b.zolnierkie@samsung.co> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lkml.kernel.org/r/20201006083509.19934-1-l.stelmach@samsung.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16checkpatch: fix multi-statement macro checks for while blocks.Dwaipayan Ray
Checkpatch.pl doesn't have a check for excluding while (...) {...} blocks from MULTISTATEMENT_MACRO_USE_DO_WHILE error. For example, running checkpatch.pl on the file mm/maccess.c in the kernel generates the following error: ERROR: Macros with complex values should be enclosed in parentheses +#define copy_from_kernel_nofault_loop(dst, src, len, type, err_label) \ + while (len >= sizeof(type)) { \ + __get_kernel_nofault(dst, src, type, err_label); \ + dst += sizeof(type); \ + src += sizeof(type); \ + len -= sizeof(type); \ + } The error is misleading for this case. Enclosing it in parentheses doesn't make any sense. Checkpatch already has an exception list for such common macro types. Added a new exception for while (...) {...} style blocks to the same. In addition, the brace flatten logic was modified by changing the substitution characters from "1" to "1u". This was done to ensure that macros in the form "#define foo(bar) while(bar){bar--;}" were also correctly procecssed. Link: https://lore.kernel.org/linux-kernel-mentees/dc985938aa3986702815a0bd68dfca8a03c85447.camel@perches.com/ Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: https://lkml.kernel.org/r/20201001171903.312021-1-dwaipayanray1@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16checkpatch: emit a warning on embedded filenamesJoe Perches
Embedding the complete filename path inside the file isn't particularly useful as often the path is moved around and becomes incorrect. Emit a warning when the source contains the filename. [akpm@linux-foundation.org: remove stray " di"] Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: https://lkml.kernel.org/r/1fd5f9188a14acdca703ca00301ee323de672a8d.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16checkpatch: extend author Signed-off-by check for split From: headerDwaipayan Ray
Checkpatch did not handle cases where the author From: header was split into multiple lines. The author identity could not be resolved and checkpatch generated a false NO_AUTHOR_SIGN_OFF warning. A typical example is commit e33bcbab16d1 ("tee: add support for session's client UUID generation"). When checkpatch was run on this commit, it displayed: "WARNING:NO_AUTHOR_SIGN_OFF: Missing Signed-off-by: line by nominal patch author ''" This was due to split header lines not being handled properly and the author himself wrote in commit cd2614967d8b ("checkpatch: warn if missing author Signed-off-by"): "Split From: headers are not fully handled: only the first part is compared." Support split From: headers by correctly parsing the header extension lines. RFC 5322, Section-2.2.3 stated that each extended line must start with a WSP character (a space or htab). The solution was therefore to concatenate the lines which start with a WSP to get the correct long header. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Reviewed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Acked-by: Joe Perches <joe@perches.com> Link: https://lore.kernel.org/linux-kernel-mentees/f5d8124e54a50480b0a9fa638787bc29b6e09854.camel@perches.com/ Link: https://lkml.kernel.org/r/20200921085436.63003-1-dwaipayanray1@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16checkpatch: allow not using -f with files that are in gitJoe Perches
If a file exists in git and checkpatch is used without the -f flag for scanning a file, then checkpatch will scan the file assuming it's a patch and emit: ERROR: Does not appear to be a unified-diff format patch Change the behavior to assume the -f flag if the file exists in git. [joe@perches.com: fix git "fatal" warning if file argument outside kernel tree] Link: https://lkml.kernel.org/r/b6afa04112d450c2fc120a308d706acd60cee294.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Julia Lawall <julia.lawall@inria.fr> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Link: https://lkml.kernel.org/r/45b81a48e1568bd0126a96f5046eb7aaae9b83c9.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16checkpatch: warn on self-assignmentsJoe Perches
The uninitialized_var() macro was removed recently via commit 63a0895d960a ("compiler: Remove uninitialized_var() macro") as it's not a particularly useful warning and its use can "paper over real bugs". Add a checkpatch test to warn on self-assignments as a means to avoid compiler warnings and as a back-door mechanism to reproduce the old uninitialized_var macro behavior. [akpm@linux-foundation.org: coding style fixes] Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Kees Cook <keescook@chromium.org> Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Denis Efremov <efremov@linux.com> Cc: Julia Lawall <julia.lawall@inria.fr> Link: https://lkml.kernel.org/r/afc2cffdd315d3e4394af149278df9e8af7f49f4.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16checkpatch: warn if trace_printk and friends are calledNicolas Boichat
trace_printk is meant as a debugging tool, and should not be compiled into production code without specific debug Kconfig options enabled, or source code changes, as indicated by the warning that shows up on boot if any trace_printk is called: ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** ** ** ** trace_printk() being used. Allocating extra memory. ** ** ** ** This means that this is a DEBUG kernel and it is ** ** unsafe for production use. ** Let's warn developers when they try to submit such a change. Signed-off-by: Nicolas Boichat <drinkcat@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Joe Perches <joe@perches.com> Link: https://lkml.kernel.org/r/20200825193600.v2.1.I723c43c155f02f726c97501be77984f1e6bb740a@changeid Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16checkpatch: add test for comma use that should be semicolonJoe Perches
There are commas used as statement terminations that should typically have used semicolons instead. Only direct assignments or use of a single function or value on a single line are detected by this test. e.g.: foo = bar(), /* typical use is semicolon not comma */ bar = baz(); Add an imperfect test to detect these comma uses. No false positives were found in testing, but many types of false negatives are possible. e.g.: foo = bar() + 1, /* comma use, but not direct assignment */ bar = baz(); Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: https://lkml.kernel.org/r/3bf27caf462007dfa75647b040ab3191374a59de.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16checkpatch: move repeated word testJoe Perches
Currently this test only works on .[ch] files. Move the test to check more file types and the commit log. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/180b3b5677771c902b2e2f7a2b7090ede65fe004.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16checkpatch: add --kconfig-prefixJerome Forissier
Kconfig allows to customize the CONFIG_ prefix via the $CONFIG_ environment variable. Out-of-tree projects may therefore use Kconfig with a different prefix, or they may use a custom configuration tool which does not use the CONFIG_ prefix at all. Such projects may still want to adhere to the Linux kernel coding style and run checkpatch.pl. One example is OP-TEE [1] which does not use Kconfig but does have configuration options prefixed with CFG_. It also mostly follows the kernel coding style and therefore being able to use checkpatch is quite valuable. To make this possible, add the --kconfig-prefix command line option. [1] https://github.com/OP-TEE/optee_os Signed-off-by: Jerome Forissier <jerome@forissier.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Joe Perches <joe@perches.com> Link: http://lkml.kernel.org/r/20200818081732.800449-1-jerome@forissier.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-09-05checkpatch: fix the usage of capture group ( ... )Mrinal Pandey
The usage of "capture group (...)" in the immediate condition after `&&` results in `$1` being uninitialized. This issues a warning "Use of uninitialized value $1 in regexp compilation at ./scripts/checkpatch.pl line 2638". I noticed this bug while running checkpatch on the set of commits from v5.7 to v5.8-rc1 of the kernel on the commits with a diff content in their commit message. This bug was introduced in the script by commit e518e9a59ec3 ("checkpatch: emit an error when there's a diff in a changelog"). It has been in the script since then. The author intended to store the match made by capture group in variable `$1`. This should have contained the name of the file as `[\w/]+` matched. However, this couldn't be accomplished due to usage of capture group and `$1` in the same regular expression. Fix this by placing the capture group in the condition before `&&`. Thus, `$1` can be initialized to the text that capture group matches thereby setting it to the desired and required value. Fixes: e518e9a59ec3 ("checkpatch: emit an error when there's a diff in a changelog") Signed-off-by: Mrinal Pandey <mrinalmni@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Reviewed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Cc: Joe Perches <joe@perches.com> Link: https://lkml.kernel.org/r/20200714032352.f476hanaj2dlmiot@mrinalpandey Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14Merge tag 'kconfig-v5.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kconfig updates from Masahiro Yamada: - remove '---help---' keyword support - fix mouse events for 'menuconfig' symbols in search view of qconf - code cleanups of qconf * tag 'kconfig-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (24 commits) kconfig: qconf: move setOptionMode() to ConfigList from ConfigView kconfig: qconf: do not limit the pop-up menu to the first row kconfig: qconf: refactor icon setups kconfig: qconf: remove unused voidPix, menuInvPix kconfig: qconf: remove ConfigItem::text/setText kconfig: qconf: remove ConfigList::addColumn/removeColumn kconfig: qconf: remove ConfigItem::pixmap/setPixmap kconfig: qconf: drop more localization code kconfig: qconf: remove 'parent' from ConfigList::updateMenuList() kconfig: qconf: remove unused argument from ConfigView::updateList() kconfig: qconf: remove unused argument from ConfigList::updateList() kconfig: qconf: omit parent to QHBoxLayout() kconfig: qconf: remove name from ConfigSearchWindow constructor kconfig: qconf: remove unused ConfigList::listView() kconfig: qconf: overload addToolBar() to create and insert toolbar kconfig: qconf: remove toolBar from ConfigMainWindow members kconfig: qconf: use 'menu' variable for (QMenu *) kconfig: qconf: do not use 'menu' variable for (QMenuBar *) kconfig: qconf: remove ->addSeparator() to menuBar kconfig: add 'static' to some file-local data ...
2020-08-14Revert "checkpatch: kconfig: prefer 'help' over '---help---'"Masahiro Yamada
This reverts commit 84af7a6194e493fae312a2b7fa5a3b51f76d9282. The conversion is done. Cc: Ulf Magnusson <ulfalizer@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-08-12checkpatch: remove missing switch/case break testJoe Perches
This test doesn't work well and newer compilers are much better at emitting this warning. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Cambda Zhu <cambda@linux.alibaba.com> Link: http://lkml.kernel.org/r/7e25090c79f6a69d502ab8219863300790192fe2.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12checkpatch: add test for repeated wordsJoe Perches
Try to avoid adding repeated words either on the same line or consecutive comment lines in a block e.g.: duplicated word in comment block /* * this is a comment block where the last word of the previous * previous line is also the first word of the next line */ and simple duplication /* test this this again */ Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/cda9b566ad67976e1acd62b053de50ee44a57250.camel@perches.com Inspired-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12checkpatch: fix CONST_STRUCT when const_structs.checkpatch is missingQuentin Monnet
Checkpatch reports warnings when some specific structs are not declared as const in the code. The list of structs to consider was initially defined in the checkpatch.pl script itself, but it was later moved to an external file (scripts/const_structs.checkpatch), in commit bf1fa1dae68e ("checkpatch: externalize the structs that should be const"). This introduced two minor issues: - When file scripts/const_structs.checkpatch is not present (for example, if checkpatch is run outside of the kernel directory with the "--no-tree" option), a warning is printed to stderr to tell the user that "No structs that should be const will be found". This is fair, but the warning is printed unconditionally, even if the option "--ignore CONST_STRUCT" is passed. In the latter case, we explicitly ask checkpatch to skip this check, so no warning should be printed. - When scripts/const_structs.checkpatch is missing, or even when trying to silence the warning by adding an empty file, $const_structs is set to "", and the regex used for finding structs that should be const, "$line =~ /struct\s+($const_structs)(?!\s*\{)/)", matches all structs found in the code, thus reporting a number of false positives. Let's fix the first item by skipping scripts/const_structs.checkpatch processing if "CONST_STRUCT" checks are ignored, and the second one by skipping the test if $const_structs is not defined. Since we modify the read_words() function a little bit, update the checks for $typedefsfile/$typeOtherTypedefs as well. Signed-off-by: Quentin Monnet <quentin@isovalent.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Joe Perches <joe@perches.com> Link: http://lkml.kernel.org/r/20200623221822.3727-1-quentin@isovalent.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12checkpatch: add --fix option for ASSIGN_IN_IFJoe Perches
Add a --fix option for 2 types of single-line assignment in if statements if ((foo = bar(...)) < BAZ) { expands to: foo = bar(..); if (foo < BAZ) { and if ((foo = bar(...)) { expands to: foo = bar(...); if (foo) { if statements with assignments spanning multiple lines are not converted with the --fix option. if statements with additional logic are also not converted. e.g.: if ((foo = bar(...)) & BAZ == BAZ) { Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Julia Lawall <julia.lawall@lip6.fr> Link: http://lkml.kernel.org/r/9bc7c782516f37948f202deba511bc95ed279bbd.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12checkpatch: add test for possible misuse of IS_ENABLED() without CONFIG_Joe Perches
IS_ENABLED is almost always used with CONFIG_<FOO> defines. Add a test to verify that the #define being tested starts with CONFIG_. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Link: http://lkml.kernel.org/r/e7fda760b91b769ba82844ba282d432c0d26d709.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-04Merge tag 'uninit-macro-v5.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull uninitialized_var() macro removal from Kees Cook: "This is long overdue, and has hidden too many bugs over the years. The series has several "by hand" fixes, and then a trivial treewide replacement. - Clean up non-trivial uses of uninitialized_var() - Update documentation and checkpatch for uninitialized_var() removal - Treewide removal of uninitialized_var()" * tag 'uninit-macro-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: compiler: Remove uninitialized_var() macro treewide: Remove uninitialized_var() usage checkpatch: Remove awareness of uninitialized_var() macro mm/debug_vm_pgtable: Remove uninitialized_var() usage f2fs: Eliminate usage of uninitialized_var() macro media: sur40: Remove uninitialized_var() usage KVM: PPC: Book3S PR: Remove uninitialized_var() usage clk: spear: Remove uninitialized_var() usage clk: st: Remove uninitialized_var() usage spi: davinci: Remove uninitialized_var() usage ide: Remove uninitialized_var() usage rtlwifi: rtl8192cu: Remove uninitialized_var() usage b43: Remove uninitialized_var() usage drbd: Remove uninitialized_var() usage x86/mm/numa: Remove uninitialized_var() usage docs: deprecated.rst: Add uninitialized_var()
2020-07-21checkpatch: Remove checks relating to [smp_]read_barrier_depends()Will Deacon
The [smp_]read_barrier_depends() macros no longer exist, so we don't need to deal with them in the checkpatch script. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Will Deacon <will@kernel.org>
2020-07-16checkpatch: Remove awareness of uninitialized_var() macroKees Cook
Using uninitialized_var() is dangerous as it papers over real bugs[1] (or can in the future), and suppresses unrelated compiler warnings (e.g. "unused variable"). If the compiler thinks it is uninitialized, either simply initialize the variable or make compiler changes. In preparation for removing[2] the[3] macro[4], partially revert commit 16b7f3c89907 ("checkpatch: avoid warning about uninitialized_var()") and remove all remaining mentions of uninitialized_var(). [1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/ [2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/ [3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/ [4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/ Signed-off-by: Kees Cook <keescook@chromium.org>
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