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2022-01-15drop fen.cocciJulia Lawall1-124/+0
This semantic patch does not take into account the fact that of_node_put can be safely applied to NULL. Thus it gives only false positives. Drop it. Reported-by: Qing Wang <wangqing@vivo.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2022-01-15scripts/coccinelle: drop bugon.cocciJulia Lawall1-63/+0
The BUG_ON script was never safe, in that it was not able to check whether the condition was side-effecting. At this point, BUG_ON should be well known, so it has probably outlived its usefuless. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Suggested-by: Matthew Wilcox <willy@infradead.org>
2021-11-13Merge tag 'coccinelle-5.16-rc1' of ↵Linus Torvalds1-0/+155
git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux Pull coccinelle updates from Julia Lawall: - Update MAINTAINERS information (mailing list, web page, etc). - Add a semantic patch from Wen Yang to check for do_div calls that may cause truncation, motivated by commit b0ab99e7736a ("sched: Fix possible divide by zero in avg_atom() calculation") * tag 'coccinelle-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux: coccinelle: update Coccinelle entry coccinelle: semantic patch to check for inappropriate do_div() calls
2021-09-11coccinelle: semantic patch to check for inappropriate do_div() callsWen Yang1-0/+155
do_div() does a 64-by-32 division. When the divisor is unsigned long, u64, or s64, do_div() truncates it to 32 bits, this means it can test non-zero and be truncated to zero for division. This semantic patch is inspired by Mateusz Guzik's patch: commit b0ab99e7736a ("sched: Fix possible divide by zero in avg_atom() calculation") Signed-off-by: Wen Yang <wenyang@linux.alibaba.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr> Cc: Gilles Muller <Gilles.Muller@lip6.fr> Cc: Nicolas Palix <nicolas.palix@imag.fr> Cc: Michal Marek <michal.lkml@markovi.net> Cc: Matthias Maennich <maennich@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: cocci@systeme.lip6.fr Cc: linux-kernel@vger.kernel.org
2021-08-08scripts: coccinelle: allow list_entry_is_head() to use posDaniel Thompson1-0/+2
Currently use_after_iter.cocci generates false positives for code of the following form: ~~~ list_for_each_entry(d, &ddata->irq_list, node) { if (irq == d->irq) break; } if (list_entry_is_head(d, &ddata->irq_list, node)) return IRQ_NONE; ~~~ [This specific example comes from drivers/power/supply/cpcap-battery.c] Most list macros use list_entry_is_head() as loop exit condition meaning it is not unsafe to reuse pos (a.k.a. d) in the code above. Let's avoid reporting these cases. Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2021-08-05coccinelle: api: rename kzfree to kfree_sensitiveWeizhao Ouyang1-1/+1
Commit 453431a54934 ("mm, treewide: rename kzfree() to kfree_sensitive()") renamed kzfree() to kfree_sensitive(), it should be applied to coccinelle. Signed-off-by: Weizhao Ouyang <o451686892@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Acked-by: Denis Efremov <efremov@linux.com>
2021-06-21coccinelle: api: remove kobj_to_dev.cocci scriptKeith Busch1-45/+0
Using kobj_to_dev() instead of container_of() is not universally accepted among maintainers as an improvement. The warning leads to repeated patch submissions that won't be accepted. Remove the script. Cc: Christoph Hellwig <hch@lst.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: Denis Efremov <efremov@linux.com> Cc: Julia Lawall <Julia.Lawall@inria.fr> Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Acked-by: Jens Axboe <axboe@kernel.dk> Acked-by: Denis Efremov <efremov@linux.com>
2021-05-01coccinelle: misc: minmax: suppress patch generation for err returnsDenis Efremov1-1/+17
There is a standard idiom for "if 'ret' holds an error, return it": return ret < 0 ? ret : 0; Developers prefer to keep the things as they are because stylistic change to "return min(ret, 0);" breaks readability. Let's suppress automatic generation for this type of patches. Signed-off-by: Denis Efremov <efremov@linux.com>
2021-05-01drop unneeded *sJulia Lawall1-6/+6
Kfree.cocci only supports org and report mode, so the *s (used for context mode) are not useful. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2021-05-01coccinelle: irqf_oneshot: reduce the severity due to false positivesKrzysztof Kozlowski1-2/+2
The IRQF_ONESHOT should be present for threaded IRQ using default primary handler. However intetrupt of many child devices, e.g. children of MFD, is nested thus the IRQF_ONESHOT is not needed. The coccinelle message about error misleads submitters and reviewers about the severity of the issue, so make it a warning and mention possible false positive. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2021-05-01coccinelle: misc: add swap scriptDenis Efremov1-0/+122
Check for opencoded swap() implementation. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2021-05-01coccinelle: misc: update uninitialized_var.cocci documentationDenis Efremov1-5/+10
Remove the documentation link from the warning message because commit 3942ea7a10c9 ("deprecated.rst: Remove now removed uninitialized_var") removed the section from documentation. Update the rule documentation accordingly. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2021-05-01coccinelle: misc: restrict patch mode in flexible_array.cocciDenis Efremov1-2/+21
Skip patches generation for structs with a single field. Changing a zero-length array to a flexible array member in a struct with no named members breaks the compilation. However, reporting such cases is still valuable, e.g. commit 637464c59e0b ("ACPI: NFIT: Fix flexible_array.cocci warnings"). Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2021-05-01coccinelle: misc: add minmax scriptDenis Efremov1-0/+206
Check for opencoded min(), max() implementations. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2021-02-13of: Remove of_dev_{get,put}()Rob Herring1-1/+0
of_dev_get() and of_dev_put are just wrappers for get_device()/put_device() on a platform_device. There's also already platform_device_{get,put}() wrappers for this purpose. Let's update the few users and remove of_dev_{get,put}(). Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Patrice Chotard <patrice.chotard@st.com> Cc: Felipe Balbi <balbi@kernel.org> Cc: Julia Lawall <Julia.Lawall@inria.fr> Cc: Gilles Muller <Gilles.Muller@inria.fr> Cc: Nicolas Palix <nicolas.palix@imag.fr> Cc: Michal Marek <michal.lkml@markovi.net> Cc: linuxppc-dev@lists.ozlabs.org Cc: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-usb@vger.kernel.org Cc: cocci@systeme.lip6.fr Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210211232745.1498137-2-robh@kernel.org
2020-12-15coccinnelle: Remove ptr_ret scriptMaxime Ripard1-97/+0
The ptr_ret script script addresses a number of situations where we end up testing an error pointer, and if it's an error returning it, or return 0 otherwise to transform it into a PTR_ERR_OR_ZERO call. So it will convert a block like this: if (IS_ERR(err)) return PTR_ERR(err); return 0; into return PTR_ERR_OR_ZERO(err); While this is technically correct, it has a number of drawbacks. First, it merges the error and success path, which will make it harder for a reviewer or reader to grasp. It's also more difficult to extend if we were to add some code between the error check and the function return, making the author essentially revert that patch before adding new lines, while it would have been a trivial addition otherwise for the rewiever. Therefore, since that script is only about cosmetic in the first place, let's remove it since it's not worth it. Acked-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Julia Lawall <julia.lawall@inria.fr> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2020-11-09remove boolinit.cocciPeter Zijlstra1-195/+0
0/1 for booleans is perfectly valid C. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-10-19Merge branch 'for-5.10' of ↵Linus Torvalds10-23/+1104
git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux Pull coccinelle updates from Julia Lawall. * 'for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux: coccinelle: api: add kfree_mismatch script coccinelle: iterators: Add for_each_child.cocci script scripts: coccicheck: Change default condition for parallelism scripts: coccicheck: Add quotes to improve portability coccinelle: api: kfree_sensitive: print memset position coccinelle: misc: add flexible_array.cocci script coccinelle: api: add kvmalloc script scripts: coccicheck: Change default value for parallelism coccinelle: misc: add excluded_middle.cocci script scripts: coccicheck: Improve error feedback when coccicheck fails coccinelle: api: update kzfree script to kfree_sensitive coccinelle: misc: add uninitialized_var.cocci script coccinelle: ifnullfree: add vfree(), kvfree*() functions coccinelle: api: add kobj_to_dev.cocci script coccinelle: add patch rule for dma_alloc_coherent scripts: coccicheck: Add chain mode to list of modes
2020-10-18coccinelle: api: add kfree_mismatch scriptDenis Efremov1-0/+228
Check that alloc and free types of functions match each other. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
2020-10-15coccinelle: iterators: Add for_each_child.cocci scriptSumera Priyadarsini1-0/+358
While iterating over child nodes with the for_each functions, if control is transferred from the middle of the loop, as in the case of a break or return or goto, there is no decrement in the reference counter thus ultimately resulting in a memory leak. Add this script to detect potential memory leaks caused by the absence of of_node_put() before break, goto, or, return statements which transfer control outside the loop. Signed-off-by: Sumera Priyadarsini <sylphrenadin@gmail.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2020-10-10coccinelle: api: kfree_sensitive: print memset positionDenis Efremov1-4/+6
Print memset() call position in addition to the kfree() position to ease issues identification. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2020-10-03coccinelle: misc: add flexible_array.cocci scriptDenis Efremov1-0/+88
One-element and zero-length arrays are deprecated [1]. Kernel code should always use "flexible array members" instead, except for existing uapi definitions. The script warns about one-element and zero-length arrays in structs. [1] commit 68e4cd17e218 ("docs: deprecated.rst: Add zero-length and one-element arrays") Cc: Kees Cook <keescook@chromium.org> Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2020-10-01coccinelle: api: add kvmalloc scriptDenis Efremov1-0/+256
Suggest kvmalloc, kvfree instead of opencoded patterns. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2020-09-21coccinelle: misc: add excluded_middle.cocci scriptDenis Efremov1-0/+39
Check for !A || A && B condition. It's equivalent to !A || B. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-09-12coccinelle: api: update kzfree script to kfree_sensitiveDenis Efremov1-16/+13
Commit 453431a54934 ("mm, treewide: rename kzfree() to kfree_sensitive()") renames kzfree to kfree_sensitive and uses memzero_explicit(...) instead of memset(..., 0, ...) internally. Update cocci script to reflect these changes. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-09-10scripts: device_attr_show.cocci: update location of sysfs docMauro Carvalho Chehab1-1/+1
sysfs.txt was converted and renamed to sysfs.rst. Update device_attr_show.cocci script accordingly. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/048ed24b09aefa0051d76396d6250e35e6ba035c.1599660067.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-09-05coccinelle: misc: add uninitialized_var.cocci scriptDenis Efremov1-0/+51
uninitialized_var() macro was removed from the sources [1] and other warning-silencing tricks were deprecated [2]. The purpose of this cocci script is to prevent new occurrences of uninitialized_var() open-coded variants. [1] commit 63a0895d960a ("compiler: Remove uninitialized_var() macro") [2] commit 4b19bec97c88 ("docs: deprecated.rst: Add uninitialized_var()") Cc: Kees Cook <keescook@chromium.org> Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-09-02coccinelle: ifnullfree: add vfree(), kvfree*() functionsDenis Efremov1-2/+9
Extend the list of free functions with kvfree(), kvfree_sensitive(), vfree(). Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-08-21coccinelle: api: add kobj_to_dev.cocci scriptDenis Efremov1-0/+45
Use kobj_to_dev() instead of container_of(). Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-08-21coccinelle: add patch rule for dma_alloc_coherentAlex Dewar1-3/+13
Commit dfd32cad146e ("dma-mapping: remove dma_zalloc_coherent()") removed the definition of dma_zalloc_coherent() and also removed the corresponding patch rule for replacing instances of dma_alloc_coherent + memset in zalloc-simple.cocci (though left the report rule). Add a new patch rule to remove unnecessary calls to memset after allocating with dma_alloc_coherent. While we're at it, fix a couple of typos. Fixes: dfd32cad146e ("dma-mapping: remove dma_zalloc_coherent()") Signed-off-by: Alex Dewar <alex.dewar90@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-08-07mm, treewide: rename kzfree() to kfree_sensitive()Waiman Long4-8/+8
As said by Linus: A symmetric naming is only helpful if it implies symmetries in use. Otherwise it's actively misleading. In "kzalloc()", the z is meaningful and an important part of what the caller wants. In "kzfree()", the z is actively detrimental, because maybe in the future we really _might_ want to use that "memfill(0xdeadbeef)" or something. The "zero" part of the interface isn't even _relevant_. The main reason that kzfree() exists is to clear sensitive information that should not be leaked to other future users of the same memory objects. Rename kzfree() to kfree_sensitive() to follow the example of the recently added kvfree_sensitive() and make the intention of the API more explicit. In addition, memzero_explicit() is used to clear the memory to make sure that it won't get optimized away by the compiler. The renaming is done by using the command sequence: git grep -w --name-only kzfree |\ xargs sed -i 's/kzfree/kfree_sensitive/' followed by some editing of the kfree_sensitive() kerneldoc and adding a kzfree backward compatibility macro in slab.h. [akpm@linux-foundation.org: fs/crypto/inline_crypt.c needs linux/slab.h] [akpm@linux-foundation.org: fix fs/crypto/inline_crypt.c some more] Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Cc: James Morris <jmorris@namei.org> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: Joe Perches <joe@perches.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: David Rientjes <rientjes@google.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: "Jason A . Donenfeld" <Jason@zx2c4.com> Link: http://lkml.kernel.org/r/20200616154311.12314-3-longman@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-06Merge branch 'for-5.9' of ↵Linus Torvalds5-4/+427
git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux Pull coccinelle updates from Julia Lawall: "New semantic patches and semantic patch improvements from Denis Efremov" * 'for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux: coccinelle: api: filter out memdup_user definitions coccinelle: api: extend memdup_user rule with vmemdup_user() coccinelle: api: extend memdup_user transformation with GFP_USER coccinelle: api: add kzfree script coccinelle: misc: add array_size_dup script to detect missed overflow checks coccinelle: api/kstrdup: fix coccinelle position coccinelle: api: add device_attr_show script
2020-08-04coccinelle: api: filter out memdup_user definitionsDenis Efremov1-4/+13
Don't match memdup_user/vmemdup_user. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-08-04coccinelle: api: extend memdup_user rule with vmemdup_user()Denis Efremov1-0/+45
Add vmemdup_user() transformations to the memdup_user.cocci rule. Commit 50fd2f298bef ("new primitive: vmemdup_user()") introduced vmemdup_user(). The function uses kvmalloc with GPF_USER flag. Signed-off-by: Denis Efremov <efremov@linux.com>
2020-08-04coccinelle: api: extend memdup_user transformation with GFP_USERDenis Efremov1-2/+6
Match GFP_USER and optional __GFP_NOWARN allocations with memdup_user.cocci rule. Commit 6c2c97a24f09 ("memdup_user(): switch to GFP_USER") switched memdup_user() from GFP_KERNEL to GFP_USER. In almost all cases it is still a good idea to recommend memdup_user() for GFP_KERNEL allocations. The motivation behind altering memdup_user() to GFP_USER: https://lkml.org/lkml/2018/1/6/333 Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-08-04coccinelle: api: add kzfree scriptDenis Efremov1-0/+101
Check for memset()/memzero_explicit() followed by kfree()/vfree()/kvfree(). Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-08-04coccinelle: misc: add array_size_dup script to detect missed overflow checksDenis Efremov1-0/+209
Detect an opencoded expression that is used before or after array_size()/array3_size()/struct_size() to compute the same size. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-08-04coccinelle: api/kstrdup: fix coccinelle positionDenis Efremov1-1/+1
There is a typo in rule r2. Position p1 should be attached to kzalloc() call. Fixes: 29a36d4dec6c ("scripts/coccinelle: improve the coverage of some semantic patches") Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-08-04coccinelle: api: add device_attr_show scriptDenis Efremov1-0/+55
According to the documentation[1] show() methods of device attributes should return the number of bytes printed into the buffer. This is the return value of scnprintf(). show() must not use snprintf() when formatting the value to be returned to user space. snprintf() returns the length the resulting string would be, assuming it all fit into the destination array[2]. scnprintf() return the length of the string actually created in buf. If one can guarantee that an overflow will never happen sprintf() can be used otherwise scnprintf(). [1] Documentation/filesystems/sysfs.txt [2] "snprintf() confusion" https://lwn.net/Articles/69419/ Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2020-07-10scripts: add dummy report mode to add_namespace.cocciMatthias Maennich1-1/+7
When running `make coccicheck` in report mode using the add_namespace.cocci file, it will fail for files that contain MODULE_LICENSE. Those match the replacement precondition, but spatch errors out as virtual.ns is not set. In order to fix that, add the virtual rule nsdeps and only do search and replace if that rule has been explicitly requested. In order to make spatch happy in report mode, we also need a dummy rule, as otherwise it errors out with "No rules apply". Using a script:python rule appears unrelated and odd, but this is the shortest I could come up with. Adjust scripts/nsdeps accordingly to set the nsdeps rule when run trough `make nsdeps`. Suggested-by: Julia Lawall <julia.lawall@inria.fr> Fixes: c7c4e29fb5a4 ("scripts: add_namespace: Fix coccicheck failed") Cc: YueHaibing <yuehaibing@huawei.com> Cc: jeyu@kernel.org Cc: cocci@systeme.lip6.fr Cc: stable@vger.kernel.org Signed-off-by: Matthias Maennich <maennich@google.com> Reported-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Julia Lawall <julia.lawall@inria.fr> Link: https://lore.kernel.org/r/20200604164145.173925-1-maennich@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-08net: remove newlines in NL_SET_ERR_MSG_MODJacob Keller1-0/+75
The NL_SET_ERR_MSG_MOD macro is used to report a string describing an error message to userspace via the netlink extended ACK structure. It should not have a trailing newline. Add a cocci script which catches cases where the newline marker is present. Using this script, fix the handful of cases which accidentally included a trailing new line. I couldn't figure out a way to get a patch mode working, so this script only implements context, report, and org. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Andy Whitcroft <apw@canonical.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-04mm: remove __kreallocFlorian Westphal1-4/+0
Since 5.5-rc1 the last user of this function is gone, so remove the functionality. See commit 2ad9d7747c10 ("netfilter: conntrack: free extension area immediately") for details. Link: http://lkml.kernel.org/r/20191212223442.22141-1-fw@strlen.de Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: David Rientjes <rientjes@google.com> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-01-06remove ioremap_nocache and devm_ioremap_nocacheChristoph Hellwig2-5/+1
ioremap has provided non-cached semantics by default since the Linux 2.6 days, so remove the additional ioremap_nocache interface. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Arnd Bergmann <arnd@arndb.de>
2019-10-17coccinelle: api/devm_platform_ioremap_resource: remove useless scriptAlexandre Belloni1-60/+0
While it is useful for new drivers to use devm_platform_ioremap_resource, this script is currently used to spam maintainers, often updating very old drivers. The net benefit is the removal of 2 lines of code in the driver but the review load for the maintainers is huge. As of now, more that 560 patches have been sent, some of them obviously broken, as in: https://lore.kernel.org/lkml/9bbcce19c777583815c92ce3c2ff2586@www.loen.fr/ Remove the script to reduce the spam. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-10-07scripts: add_namespace: Fix coccicheck failedYueHaibing1-0/+2
Now all scripts in scripts/coccinelle to be automatically called by coccicheck. However new adding add_namespace.cocci does not support report mode, which make coccicheck failed. This add "virtual report" to make the coccicheck go ahead smoothly. Fixes: eb8305aecb95 ("scripts: Coccinelle script for namespace dependencies.") Acked-by: Julia Lawall <julia.lawall@lip6.fr> Acked-by: Matthias Maennich <maennich@google.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Jessica Yu <jeyu@kernel.org>
2019-09-22Merge tag 'modules-for-v5.4' of ↵Linus Torvalds1-0/+23
git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux Pull modules updates from Jessica Yu: "The main bulk of this pull request introduces a new exported symbol namespaces feature. The number of exported symbols is increasingly growing with each release (we're at about 31k exports as of 5.3-rc7) and we currently have no way of visualizing how these symbols are "clustered" or making sense of this huge export surface. Namespacing exported symbols allows kernel developers to more explicitly partition and categorize exported symbols, as well as more easily limiting the availability of namespaced symbols to other parts of the kernel. For starters, we have introduced the USB_STORAGE namespace to demonstrate the API's usage. I have briefly summarized the feature and its main motivations in the tag below. Summary: - Introduce exported symbol namespaces. This new feature allows subsystem maintainers to partition and categorize their exported symbols into explicit namespaces. Module authors are now required to import the namespaces they need. Some of the main motivations of this feature include: allowing kernel developers to better manage the export surface, allow subsystem maintainers to explicitly state that usage of some exported symbols should only be limited to certain users (think: inter-module or inter-driver symbols, debugging symbols, etc), as well as more easily limiting the availability of namespaced symbols to other parts of the kernel. With the module import requirement, it is also easier to spot the misuse of exported symbols during patch review. Two new macros are introduced: EXPORT_SYMBOL_NS() and EXPORT_SYMBOL_NS_GPL(). The API is thoroughly documented in Documentation/kbuild/namespaces.rst. - Some small code and kbuild cleanups here and there" * tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: module: Remove leftover '#undef' from export header module: remove unneeded casts in cmp_name() module: move CONFIG_UNUSED_SYMBOLS to the sub-menu of MODULES module: remove redundant 'depends on MODULES' module: Fix link failure due to invalid relocation on namespace offset usb-storage: export symbols in USB_STORAGE namespace usb-storage: remove single-use define for debugging docs: Add documentation for Symbol Namespaces scripts: Coccinelle script for namespace dependencies. modpost: add support for generating namespace dependencies export: allow definition default namespaces in Makefiles or sources module: add config option MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS modpost: add support for symbol namespaces module: add support for symbol namespaces. export: explicitly align struct kernel_symbol module: support reading multiple values per modinfo tag
2019-09-18Merge tag 'driver-core-5.4-rc1' of ↵Linus Torvalds1-0/+102
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg Kroah-Hartman: "Here is the big driver core update for 5.4-rc1. There was a bit of a churn in here, with a number of core and OF platform patches being added to the tree, and then after much discussion and review and a day-long in-person meeting, they were decided to be reverted and a new set of patches is currently being reviewed on the mailing list. Other than that churn, there are two "persistent" branches in here that other trees will be pulling in as well during the merge window. One branch to add support for drivers to have the driver core automatically add sysfs attribute files when a driver is bound to a device so that the driver doesn't have to manually do it (and then clean it up, as it always gets it wrong). There's another branch in here for generic lookup helpers for the driver core that lots of busses are starting to use. That's the majority of the non-driver-core changes in this patch series. There's also some on-going debugfs file creation cleanup that has been slowly happening over the past few releases, with the goal to hopefully get that done sometime next year. All of these have been in linux-next for a while now with no reported issues" [ Note that the above-mentioned generic lookup helpers branch was already brought in by the LED merge (commit 4feaab05dc1e) that had shared it. Also note that that common branch introduced an i2c bug due to a bad conversion, which got fixed here. - Linus ] * tag 'driver-core-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (49 commits) coccinelle: platform_get_irq: Fix parse error driver-core: add include guard to linux/container.h sysfs: add BIN_ATTR_WO() macro driver core: platform: Export platform_get_irq_optional() hwmon: pwm-fan: Use platform_get_irq_optional() driver core: platform: Introduce platform_get_irq_optional() Revert "driver core: Add support for linking devices during device addition" Revert "driver core: Add edit_links() callback for drivers" Revert "of/platform: Add functional dependency link from DT bindings" Revert "driver core: Add sync_state driver/bus callback" Revert "of/platform: Pause/resume sync state during init and of_platform_populate()" Revert "of/platform: Create device links for all child-supplier depencencies" Revert "of/platform: Don't create device links for default busses" Revert "of/platform: Fix fn definitons for of_link_is_valid() and of_link_property()" Revert "of/platform: Fix device_links_supplier_sync_state_resume() warning" Revert "of/platform: Disable generic device linking code for PowerPC" devcoredump: fix typo in comment devcoredump: use memory_read_from_buffer of/platform: Disable generic device linking code for PowerPC device.h: Fix warnings for mismatched parameter names in comments ...
2019-09-10scripts: Coccinelle script for namespace dependencies.Matthias Maennich1-0/+23
A script that uses the '<module>.ns_deps' files generated by modpost to automatically add the required symbol namespace dependencies to each module. Usage: 1) Move some symbols to a namespace with EXPORT_SYMBOL_NS() or define DEFAULT_SYMBOL_NAMESPACE 2) Run 'make' (or 'make modules') and get warnings about modules not importing that namespace. 3) Run 'make nsdeps' to automatically add required import statements to said modules. This makes it easer for subsystem maintainers to introduce and maintain symbol namespaces into their codebase. Co-developed-by: Martijn Coenen <maco@android.com> Signed-off-by: Martijn Coenen <maco@android.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Matthias Maennich <maennich@google.com> Signed-off-by: Jessica Yu <jeyu@kernel.org>
2019-09-06coccinelle: platform_get_irq: Fix parse errorYueHaibing1-3/+3
When do coccicheck, I get this error: spatch -D report --no-show-diff --very-quiet --cocci-file ./scripts/coccinelle/api/platform_get_irq.cocci --include-headers --dir . -I ./arch/x86/include -I ./arch/x86/include/generated -I ./include -I ./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi -I ./include/uapi -I ./include/generated/uapi --include ./include/linux/kconfig.h --jobs 192 --chunksize 1 minus: parse error: File "./scripts/coccinelle/api/platform_get_irq.cocci", line 24, column 9, charpos = 355 around = '\(', whole content = if ( ret \( < \| <= \) 0 ) In commit e56476897448 ("fpga: Remove dev_err() usage after platform_get_irq()") log, I found the semantic patch, it fix this issue. Fixes: 98051ba2b28b ("coccinelle: Add script to check for platform_get_irq() excessive prints") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Link: https://lore.kernel.org/r/20190906033006.17616-1-yuehaibing@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-30coccinelle: api/atomic_as_refcounter: add SPDX License IdentifierMatthias Maennich1-0/+1
Add the missing GPLv2 SPDX license identifier. It appears this single file was missing from 7f904d7e1f3e ("treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505"), which addressed all other files in scripts/coccinelle. Hence I added GPL-2.0-only consitently with the mentioned patch. Cc: linux-spdx@vger.kernel.org Cc: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: Matthias Maennich <maennich@google.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-25 19:11:20 +0300