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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:X/kkZ06rZlFudE0r7jf+z2dqyNagehQu4UReRu9kWQ93tX5M4/9 4u6rRbi5VKMBa1w+pv3VJg0uk2VDfj4Tqpgt5ljTeKmqcwZOUp+oORk9Zb6zdkehxSq0TyN Q0vJIAc7CJEw6/bQRnOMP+YVLk26i9gTA0JHDy15gEWiw0CU+EkquC625Tt0k/NDsLZrhQv iqYKaTL93bHhweaTAbHWg== X-UI-Out-Filterresults: notjunk:1;V03:K0:8DXUGpkGegA=:rCnfwWiWh5Vd72NjfdR7m9 R8wxZ1DAtuMVAhbYXMtXEJrsUZlAdnQUoFdnDgxFASl3Lub+FsmJsFMKqGUVvWcpjL06XaXKn +pbx65owYcCgGLWr5rJzuKpKcJ7rUs77FlRariSy+OYR01Uo+6Bt6ikDN+2YLL11MzQBGkCos q/33J1vnBs1GamfVESckUM3fSftKh8byPTJMiTAtlHHz1jUffNdRKbD8eowff8qSO7EVf27ll KhZBxMCMuCkZdRb7znJnEnoRhVN3QFY0Ku2mH5zPJhRNFnBYxXgba1mYVhIKRQaGteOuXsP2J Yj4RCBGHTJF2oG9HxQTiYeitIg7UhOoJLxMkSt3kctFK0jCUR4P6ysazNOHz91DveQcHDqXC/ JULnsJLhEe6M1bGYmtbIw5ISIeCIaSKcl7uSJrBZjnSIZ5ZEwrU9YQkBMj2Z6d+BgnS1lbGsq ITGu385cPxWSVmGSHve9Diko6YEqxjX3i37bed6ZppBnnFtoN+31bKkDsAuPlKpYGxFI4R/9T Njr23kO8RzdodmIv4D5j6/+el/VvUN8g7FYRgsze8jj+nXfGKIdiv+/r7g95Ac+3WHl+5dMdx A0AKgj4WdCOamKjCrtm430DI+hl3fZVlLaU5xzixJLkO6dK7PzqCtQOdP2mnwcXwIbzXXk++8 QgSGT+u6MZjW9zNbxRCEsBRo4xETCGbsc9Hxd7TgTXTJYartHdiWRPvNUJzmh0/jEkuvotn+N MPnWnbU7EXf1WQxPydyWBopTVe85j3toUCimV1/AaFpjOTlgeEEI5Idk4p57VjTbfUS7XjtCF XU2YZXL0e5oihQhHvEcuBTC2YKGxv2fgDv3YNyYvT+QX8aUbIjop7G676w2fzr8q9A3+k4JIX f7bISIvNDFiDNy7vXC8LzRydxDnqfYk6Fhd2s5AjtINpPW5hYxOO3IsqOCDHFYXshvdWavgLK sYbbbWLsmX2y0mix0UUYkWdvRZVwznlqk72OOsVtwDi0lVXRgvvs6X7UJW0xJPP5hc4ezlwYf QD4p/aG5fBKmc5XgVurx5JUnSI6Y3acg5ZD/XjgCOEyU9HKr0VPcD2Bkgr8LObN7Yg6ykgpnh QQxdfmqWvW0v0RDalNBG7TNE62WDc78fmefiuadc6JmZh3Y8B2ohFNVQ7wXA+ig+xVIAtnIqG mTEYLXptd7elkrn0lOb2pPQRxLVAutxmFaANkWDXO0A+zU7f3HA9kw/I3fd38SHfxtnk9BYVy dY1DJy8bRSRq8rO++ Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Check that alloc and free types of functions match each other. Further software development challenges are interesting also for such an u= se case. > +/// Check that kvmalloc'ed memory is freed by kfree functions, > +/// vmalloc'ed by vfree functions and kvmalloc'ed by kvfree > +/// functions. * How do you think about to offer a wording suggestion for subjects of generated patches? * Will the presented case distinction trigger further improvements for the desired matching? * Would you like to generalise the safe handling of allocations and corresponding release of system resources? > +// Confidence: High I suggest to reconsider this information once more. > +virtual patch > +virtual report > +virtual org > +virtual context +virtual patch, report, org, context Is such a SmPL code variant more succinct? > +@choice@ * Can it be that this SmPL rule is not relevant for all operation modes? * Will additional dependencies matter? > + E =3D \(kmalloc@kok\|kzalloc@kok\|krealloc@kok\|kcalloc@kok\|kmallo= c_node@kok\|kzalloc_node@kok\|kmalloc_array@kok\|kmalloc_array_node@kok\|k= calloc_node@kok\)(...) I would prefer an other coding style here. * Items for such SmPL disjunctions can be specified also on multiple lines= . * The semantic patch language supports further means to handle function na= me lists in more convenient ways. Would you like to work with customised constraints? > +msg =3D "WARNING: kmalloc is used to allocate this memory at line %s" %= (k[0].line) > +coccilib.report.print_report(p[0], msg) * I propose once more omit the extra variable =E2=80=9Cmsg=E2=80=9D at sim= ilar places. The desired message object can be directly passed as a function paramete= r. * I find the diagnostic text insufficient. * Can the corresponding function category be dynamically determined? Are you looking for opportunities to avoid unwanted code duplication? Regards, Markus From mboxrd@z Thu Jan 1 00:00:00 1970 From: Markus Elfring Date: Sat, 06 Jun 2020 07:30:36 +0000 Subject: Re: [PATCH] coccinelle: api: add kvfree script Message-Id: <99ed463c-b7ba-0400-7cf7-5bcc1992baef@web.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit To: Denis Efremov , Coccinelle , Gilles Muller , Julia Lawall , Masahiro Yamada , Michal Marek , Nicolas Palix Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org > Check that alloc and free types of functions match each other. Further software development challenges are interesting also for such an use case. > +/// Check that kvmalloc'ed memory is freed by kfree functions, > +/// vmalloc'ed by vfree functions and kvmalloc'ed by kvfree > +/// functions. * How do you think about to offer a wording suggestion for subjects of generated patches? * Will the presented case distinction trigger further improvements for the desired matching? * Would you like to generalise the safe handling of allocations and corresponding release of system resources? > +// Confidence: High I suggest to reconsider this information once more. > +virtual patch > +virtual report > +virtual org > +virtual context +virtual patch, report, org, context Is such a SmPL code variant more succinct? > +@choice@ * Can it be that this SmPL rule is not relevant for all operation modes? * Will additional dependencies matter? > + E = \(kmalloc@kok\|kzalloc@kok\|krealloc@kok\|kcalloc@kok\|kmalloc_node@kok\|kzalloc_node@kok\|kmalloc_array@kok\|kmalloc_array_node@kok\|kcalloc_node@kok\)(...) I would prefer an other coding style here. * Items for such SmPL disjunctions can be specified also on multiple lines. * The semantic patch language supports further means to handle function name lists in more convenient ways. Would you like to work with customised constraints? > +msg = "WARNING: kmalloc is used to allocate this memory at line %s" % (k[0].line) > +coccilib.report.print_report(p[0], msg) * I propose once more omit the extra variable “msg” at similar places. The desired message object can be directly passed as a function parameter. * I find the diagnostic text insufficient. * Can the corresponding function category be dynamically determined? Are you looking for opportunities to avoid unwanted code duplication? 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