linux/scripts/coccinelle, branch v4.11

Coccinelle: misc: Add support for devm variant in all modes

2016-12-11T11:08:26Z

Add missing support for the devm_request_threaded_irq in the rules of context, report and org modes. Misc: ---- To be consistent with other scripts, change confidence level of the script to 'Moderate'. Signed-off-by: Vaishali Thakkar Acked-by: Julia Lawall Signed-off-by: Michal Marek

Coccinelle: misc: Improve the result given by context mode

2016-12-11T11:08:26Z

To eliminate false positives given by the context mode, add necessary arguments for the function request_threaded_irq. Signed-off-by: Vaishali Thakkar Acked-by: Julia Lawall Signed-off-by: Michal Marek

Coccinelle: misc: Improve the matching of rules

2016-12-11T11:08:26Z

Currently because of the left associativity of the operators, pattern IRQF_ONESHOT | flags does not match with the pattern when we have more than one flag after the disjunction. This eventually results in giving false positives by the script. This patch eliminates these FPs by improving the rule. Signed-off-by: Vaishali Thakkar Signed-off-by: Michal Marek

Coccinelle: Add misc/boolconv.cocci

2016-12-11T11:07:00Z

Add a script to check for unneeded conversions to bool. Signed-off-by: Andrew F. Davis Acked-by: Julia Lawall Signed-off-by: Michal Marek

Coccinelle: flag conditions with no effect

2016-10-11T07:57:17Z

Report code constructs where the if and else branch are functionally identical. In cases where this is intended it really should be documented - most reported cases probably are bugs. Signed-off-by: Nicholas Mc Guire Signed-off-by: Michal Marek

Coccinelle: pm_runtime: ensure relevance of pm_runtime reports

2016-10-01T21:03:41Z

pm_runtime.cocci starts with one rule that searches for a variety of functions calls, followed by various rules that report errors. Previously, the only connection between the first rule and the rest was to check that the first rule had matched somewhere. Change the rules to propagate a position from the first rule to the others, to make sure that the sites reported on are the same as the sites that were identified as having the relevant functions. Signed-off-by: Julia Lawall Signed-off-by: Michal Marek

Coccinelle: limit memdup_user transformation to GFP_KERNEL case

2016-10-01T21:03:09Z

Memdup_user encapsulates a memory allocation with the flag GFP_KERNEL, so only allow this flag in the original code. Signed-off-by: Julia Lawall Signed-off-by: Michal Marek

scripts/coccinelle: require coccinelle >= 1.0.4 on device_node_continue.cocci

2016-07-22T10:13:39Z

Make use of the new Requires: tag to be able to specify coccinelle binary version requirements. The cocci file device_node_continue.cocci requires at least coccinelle 1.0.4. Signed-off-by: Luis R. Rodriguez Acked-by: Julia Lawall Acked-by: Nicolas Palix Signed-off-by: Michal Marek

coccinelle: catch krealloc() on devm_*() allocated memory

2016-06-21T09:43:32Z

krealloc() must not be used against devm_*() allocated memory regions: - if a bigger memory is to be allocated, krealloc() and __krealloc() could return a different pointer than the one given to them, creating a memory region which is not managed, thus it will not be automatically released on device removal. - if a bigger memory is to be allocated, krealloc() could kfree() the managed memory region which is passed to it. The old pointer is left registered as a resource for the device. On device removal, this dangling pointer will be used and an unrelated memory region could be released. - if the requested size is equal to 0, krealloc() can also just behave like kfree(). Here too, the old pointer is kept associated with the device. On device removal, this invalid pointer will be used and an unrelated memory region could be released. For all these reasons, krealloc() must not be used on a pointer returned by devm_*() functions. Cc: Tejun Heo Cc: Pekka Enberg Acked-by: Julia Lawall Signed-off-by: Yann Droneaud Signed-off-by: Michal Marek

coccinelle: recognize more devm_* memory allocation functions

2016-06-21T09:43:32Z

Updates free/devm_free.cocci to recognize functions added by: - commit 64c862a839a8 ('devres: add kernel standard devm_k.alloc functions') - commit e31108cad3de ('devres: introduce API "devm_kstrdup"') - commit 3046365bb470 ('devres: introduce API "devm_kmemdup') - commit 43339bed7010 ('devres: Add devm_get_free_pages API') - commit 75f2a4ead5d5 ('devres: Add devm_kasprintf and devm_kvasprintf API') See also Documentation/driver-model/devres.txt Cc: Joe Perches Cc: Manish Badarkhe Cc: Srinivas Pandruvada Cc: Eli Billauer Cc: Himangi Saraogi Cc: Geert Uytterhoeven Cc: Wolfram Sang Cc: Daniel Thompson Acked-by: Julia Lawall Signed-off-by: Yann Droneaud Signed-off-by: Michal Marek