diff options
Diffstat (limited to 'kernel/scripts/coccinelle/misc')
| -rw-r--r-- | kernel/scripts/coccinelle/misc/array_size.cocci | 87 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/badty.cocci | 76 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/boolinit.cocci | 178 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/boolreturn.cocci | 58 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/bugon.cocci | 62 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/cstptr.cocci | 41 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/doubleinit.cocci | 53 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/ifaddr.cocci | 35 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/ifcol.cocci | 48 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/irqf_oneshot.cocci | 89 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/noderef.cocci | 65 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/of_table.cocci | 62 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/orplus.cocci | 55 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/returnvar.cocci | 66 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/semicolon.cocci | 83 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/simple_return.cocci | 180 | ||||
| -rw-r--r-- | kernel/scripts/coccinelle/misc/warn.cocci | 109 |
17 files changed, 1347 insertions, 0 deletions
diff --git a/kernel/scripts/coccinelle/misc/array_size.cocci b/kernel/scripts/coccinelle/misc/array_size.cocci new file mode 100644 index 000000000..81e279cd3 --- /dev/null +++ b/kernel/scripts/coccinelle/misc/array_size.cocci @@ -0,0 +1,87 @@ +/// Use ARRAY_SIZE instead of dividing sizeof array with sizeof an element +/// +//# This makes an effort to find cases where ARRAY_SIZE can be used such as +//# where there is a division of sizeof the array by the sizeof its first +//# element or by any indexed element or the element type. It replaces the +//# division of the two sizeofs by ARRAY_SIZE. +// +// Confidence: High +// Copyright: (C) 2014 Himangi Saraogi. GPLv2. +// Comments: +// Options: --no-includes --include-headers + +virtual patch +virtual context +virtual org +virtual report + +@i@ +@@ + +#include <linux/kernel.h> + +//---------------------------------------------------------- +// For context mode +//---------------------------------------------------------- + +@depends on i&&context@ +type T; +T[] E; +@@ +( +* (sizeof(E)/sizeof(*E)) +| +* (sizeof(E)/sizeof(E[...])) +| +* (sizeof(E)/sizeof(T)) +) + +//---------------------------------------------------------- +// For patch mode +//---------------------------------------------------------- + +@depends on i&&patch@ +type T; +T[] E; +@@ +( +- (sizeof(E)/sizeof(*E)) ++ ARRAY_SIZE(E) +| +- (sizeof(E)/sizeof(E[...])) ++ ARRAY_SIZE(E) +| +- (sizeof(E)/sizeof(T)) ++ ARRAY_SIZE(E) +) + +//---------------------------------------------------------- +// For org and report mode +//---------------------------------------------------------- + +@r@ +type T; +T[] E; +position p; +@@ +( + (sizeof(E)@p /sizeof(*E)) +| + (sizeof(E)@p /sizeof(E[...])) +| + (sizeof(E)@p /sizeof(T)) +) + +@script:python depends on i&&org@ +p << r.p; +@@ + +coccilib.org.print_todo(p[0], "WARNING should use ARRAY_SIZE") + +@script:python depends on i&&report@ +p << r.p; +@@ + +msg="WARNING: Use ARRAY_SIZE" +coccilib.report.print_report(p[0], msg) + diff --git a/kernel/scripts/coccinelle/misc/badty.cocci b/kernel/scripts/coccinelle/misc/badty.cocci new file mode 100644 index 000000000..2fc06fc71 --- /dev/null +++ b/kernel/scripts/coccinelle/misc/badty.cocci @@ -0,0 +1,76 @@ +/// Use ARRAY_SIZE instead of dividing sizeof array with sizeof an element +/// +//# This makes an effort to find cases where the argument to sizeof is wrong +//# in memory allocation functions by checking the type of the allocated memory +//# when it is a double pointer and ensuring the sizeof argument takes a pointer +//# to the the memory being allocated. There are false positives in cases the +//# sizeof argument is not used in constructing the return value. The result +//# may need some reformatting. +// +// Confidence: Moderate +// Copyright: (C) 2014 Himangi Saraogi. GPLv2. +// Comments: +// Options: + +virtual patch +virtual context +virtual org +virtual report + +//---------------------------------------------------------- +// For context mode +//---------------------------------------------------------- + +@depends on context disable sizeof_type_expr@ +type T; +T **x; +@@ + + x = + <+...sizeof( +* T + )...+> + +//---------------------------------------------------------- +// For patch mode +//---------------------------------------------------------- + +@depends on patch disable sizeof_type_expr@ +type T; +T **x; +@@ + + x = + <+...sizeof( +- T ++ *x + )...+> + +//---------------------------------------------------------- +// For org and report mode +//---------------------------------------------------------- + +@r disable sizeof_type_expr@ +type T; +T **x; +position p; +@@ + + x = + <+...sizeof( + T@p + )...+> + +@script:python depends on org@ +p << r.p; +@@ + +coccilib.org.print_todo(p[0], "WARNING sizeof argument should be pointer type, not structure type") + +@script:python depends on report@ +p << r.p; +@@ + +msg="WARNING: Use correct pointer type argument for sizeof" +coccilib.report.print_report(p[0], msg) + diff --git a/kernel/scripts/coccinelle/misc/boolinit.cocci b/kernel/scripts/coccinelle/misc/boolinit.cocci new file mode 100644 index 000000000..b9abed49c --- /dev/null +++ b/kernel/scripts/coccinelle/misc/boolinit.cocci @@ -0,0 +1,178 @@ +/// Bool initializations should use true and false. Bool tests don't need +/// comparisons. Based on contributions from Joe Perches, Rusty Russell +/// and Bruce W Allan. +/// +// Confidence: High +// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Options: --include-headers + +virtual patch +virtual context +virtual org +virtual report + +@depends on patch@ +bool t; +symbol true; +symbol false; +@@ + +( +- t == true ++ t +| +- true == t ++ t +| +- t != true ++ !t +| +- true != t ++ !t +| +- t == false ++ !t +| +- false == t ++ !t +| +- t != false ++ t +| +- false != t ++ t +) + +@depends on patch disable is_zero, isnt_zero@ +bool t; +@@ + +( +- t == 1 ++ t +| +- t != 1 ++ !t +| +- t == 0 ++ !t +| +- t != 0 ++ t +) + +@depends on patch@ +bool b; +@@ +( + b = +- 0 ++ false +| + b = +- 1 ++ true +) + +// --------------------------------------------------------------------- + +@r1 depends on !patch@ +bool t; +position p; +@@ + +( +* t@p == true +| +* true == t@p +| +* t@p != true +| +* true != t@p +| +* t@p == false +| +* false == t@p +| +* t@p != false +| +* false != t@p +) + +@r2 depends on !patch disable is_zero, isnt_zero@ +bool t; +position p; +@@ + +( +* t@p == 1 +| +* t@p != 1 +| +* t@p == 0 +| +* t@p != 0 +) + +@r3 depends on !patch@ +bool b; +position p1,p2; +constant c; +@@ +( +*b@p1 = 0 +| +*b@p1 = 1 +| +*b@p2 = c +) + +@script:python depends on org@ +p << r1.p; +@@ + +cocci.print_main("WARNING: Comparison to bool",p) + +@script:python depends on org@ +p << r2.p; +@@ + +cocci.print_main("WARNING: Comparison of bool to 0/1",p) + +@script:python depends on org@ +p1 << r3.p1; +@@ + +cocci.print_main("WARNING: Assignment of bool to 0/1",p1) + +@script:python depends on org@ +p2 << r3.p2; +@@ + +cocci.print_main("ERROR: Assignment of bool to non-0/1 constant",p2) + +@script:python depends on report@ +p << r1.p; +@@ + +coccilib.report.print_report(p[0],"WARNING: Comparison to bool") + +@script:python depends on report@ +p << r2.p; +@@ + +coccilib.report.print_report(p[0],"WARNING: Comparison of bool to 0/1") + +@script:python depends on report@ +p1 << r3.p1; +@@ + +coccilib.report.print_report(p1[0],"WARNING: Assignment of bool to 0/1") + +@script:python depends on report@ +p2 << r3.p2; +@@ + +coccilib.report.print_report(p2[0],"ERROR: Assignment of bool to non-0/1 constant") diff --git a/kernel/scripts/coccinelle/misc/boolreturn.cocci b/kernel/scripts/coccinelle/misc/boolreturn.cocci new file mode 100644 index 000000000..a43c7b0c3 --- /dev/null +++ b/kernel/scripts/coccinelle/misc/boolreturn.cocci @@ -0,0 +1,58 @@ +/// Return statements in functions returning bool should use +/// true/false instead of 1/0. +// +// Confidence: High +// Options: --no-includes --include-headers + +virtual patch +virtual report +virtual context + +@r1 depends on patch@ +identifier fn; +typedef bool; +symbol false; +symbol true; +@@ + +bool fn ( ... ) +{ +<... +return +( +- 0 ++ false +| +- 1 ++ true +) + ; +...> +} + +@r2 depends on report || context@ +identifier fn; +position p; +@@ + +bool fn ( ... ) +{ +<... +return +( +* 0@p +| +* 1@p +) + ; +...> +} + + +@script:python depends on report@ +p << r2.p; +fn << r2.fn; +@@ + +msg = "WARNING: return of 0/1 in function '%s' with return type bool" % fn +coccilib.report.print_report(p[0], msg) diff --git a/kernel/scripts/coccinelle/misc/bugon.cocci b/kernel/scripts/coccinelle/misc/bugon.cocci new file mode 100644 index 000000000..27c97f1f2 --- /dev/null +++ b/kernel/scripts/coccinelle/misc/bugon.cocci @@ -0,0 +1,62 @@ +/// Use BUG_ON instead of a if condition followed by BUG. +/// +//# This makes an effort to find cases where BUG() follows an if +//# condition on an expression and replaces the if condition and BUG() +//# with a BUG_ON having the conditional expression of the if statement +//# as argument. +// +// Confidence: High +// Copyright: (C) 2014 Himangi Saraogi. GPLv2. +// Comments: +// Options: --no-includes --include-headers + +virtual patch +virtual context +virtual org +virtual report + +//---------------------------------------------------------- +// For context mode +//---------------------------------------------------------- + +@depends on context@ +expression e; +@@ + +*if (e) BUG(); + +//---------------------------------------------------------- +// For patch mode +//---------------------------------------------------------- + +@depends on patch@ +expression e; +@@ + +-if (e) BUG(); ++BUG_ON(e); + +//---------------------------------------------------------- +// For org and report mode +//---------------------------------------------------------- + +@r@ +expression e; +position p; +@@ + + if (e) BUG@p (); + +@script:python depends on org@ +p << r.p; +@@ + +coccilib.org.print_todo(p[0], "WARNING use BUG_ON") + +@script:python depends on report@ +p << r.p; +@@ + +msg="WARNING: Use BUG_ON instead of if condition followed by BUG.\nPlease make sure the condition has no side effects (see conditional BUG_ON definition in include/asm-generic/bug.h)" +coccilib.report.print_report(p[0], msg) + diff --git a/kernel/scripts/coccinelle/misc/cstptr.cocci b/kernel/scripts/coccinelle/misc/cstptr.cocci new file mode 100644 index 000000000..f0368b3d4 --- /dev/null +++ b/kernel/scripts/coccinelle/misc/cstptr.cocci @@ -0,0 +1,41 @@ +/// PTR_ERR should be applied before its argument is reassigned, typically +/// to NULL +/// +// Confidence: High +// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: +// Options: --no-includes --include-headers + +virtual org +virtual report +virtual context + +@r exists@ +expression e,e1; +constant c; +position p1,p2; +@@ + +*e@p1 = c +... when != e = e1 + when != &e + when != true IS_ERR(e) +*PTR_ERR@p2(e) + +@script:python depends on org@ +p1 << r.p1; +p2 << r.p2; +@@ + +cocci.print_main("PTR_ERR",p2) +cocci.print_secs("assignment",p1) + +@script:python depends on report@ +p1 << r.p1; +p2 << r.p2; +@@ + +msg = "ERROR: PTR_ERR applied after initialization to constant on line %s" % (p1[0].line) +coccilib.report.print_report(p2[0],msg) diff --git a/kernel/scripts/coccinelle/misc/doubleinit.cocci b/kernel/scripts/coccinelle/misc/doubleinit.cocci new file mode 100644 index 000000000..c0c3371d2 --- /dev/null +++ b/kernel/scripts/coccinelle/misc/doubleinit.cocci @@ -0,0 +1,53 @@ +/// Find duplicate field initializations. This has a high rate of false +/// positives due to #ifdefs, which Coccinelle is not aware of in a structure +/// initialization. +/// +// Confidence: Low +// Copyright: (C) 2010-2012 Nicolas Palix. GPLv2. +// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: requires at least Coccinelle 0.2.4, lex or parse error otherwise +// Options: --no-includes --include-headers + +virtual org +virtual report + +@r@ +identifier I, s, fld; +position p0,p; +expression E; +@@ + +struct I s =@p0 { ..., .fld@p = E, ...}; + +@s@ +identifier I, s, r.fld; +position r.p0,p; +expression E; +@@ + +struct I s =@p0 { ..., .fld@p = E, ...}; + +@script:python depends on org@ +p0 << r.p0; +fld << r.fld; +ps << s.p; +pr << r.p; +@@ + +if int(ps[0].line) < int(pr[0].line) or (int(ps[0].line) == int(pr[0].line) and int(ps[0].column) < int(pr[0].column)): + cocci.print_main(fld,p0) + cocci.print_secs("s",ps) + cocci.print_secs("r",pr) + +@script:python depends on report@ +p0 << r.p0; +fld << r.fld; +ps << s.p; +pr << r.p; +@@ + +if int(ps[0].line) < int(pr[0].line) or (int(ps[0].line) == int(pr[0].line) and int(ps[0].column) < int(pr[0].column)): + msg = "%s: first occurrence line %s, second occurrence line %s" % (fld,ps[0].line,pr[0].line) + coccilib.report.print_report(p0[0],msg) diff --git a/kernel/scripts/coccinelle/misc/ifaddr.cocci b/kernel/scripts/coccinelle/misc/ifaddr.cocci new file mode 100644 index 000000000..8aebd1875 --- /dev/null +++ b/kernel/scripts/coccinelle/misc/ifaddr.cocci @@ -0,0 +1,35 @@ +/// the address of a variable or field is non-zero is likely always to bo +/// non-zero +/// +// Confidence: High +// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: +// Options: --no-includes --include-headers + +virtual org +virtual report +virtual context + +@r@ +expression x; +statement S1,S2; +position p; +@@ + +*if@p (&x) + S1 else S2 + +@script:python depends on org@ +p << r.p; +@@ + +cocci.print_main("test of a variable/field address",p) + +@script:python depends on report@ +p << r.p; +@@ + +msg = "ERROR: test of a variable/field address" +coccilib.report.print_report(p[0],msg) diff --git a/kernel/scripts/coccinelle/misc/ifcol.cocci b/kernel/scripts/coccinelle/misc/ifcol.cocci new file mode 100644 index 000000000..d0d00ef1f --- /dev/null +++ b/kernel/scripts/coccinelle/misc/ifcol.cocci @@ -0,0 +1,48 @@ +/// Find confusingly indented code in or after an if. An if branch should +/// be indented. The code following an if should not be indented. +/// Sometimes, code after an if that is indented is actually intended to be +/// part of the if branch. +/// +/// This has a high rate of false positives, because Coccinelle's column +/// calculation does not distinguish between spaces and tabs, so code that +/// is not visually aligned may be considered to be in the same column. +/// +// Confidence: Low +// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2. +// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2. +// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: +// Options: --no-includes --include-headers + +virtual org +virtual report + +@r disable braces4@ +position p1,p2; +statement S1,S2; +@@ + +( +if (...) { ... } +| +if (...) S1@p1 S2@p2 +) + +@script:python depends on org@ +p1 << r.p1; +p2 << r.p2; +@@ + +if (p1[0].column == p2[0].column): + cocci.print_main("branch",p1) + cocci.print_secs("after",p2) + +@script:python depends on report@ +p1 << r.p1; +p2 << r.p2; +@@ + +if (p1[0].column == p2[0].column): + msg = "code aligned with following code on line %s" % (p2[0].line) + coccilib.report.print_report(p1[0],msg) diff --git a/kernel/scripts/coccinelle/misc/irqf_oneshot.cocci b/kernel/scripts/coccinelle/misc/irqf_oneshot.cocci new file mode 100644 index 000000000..a24a754ae --- /dev/null +++ b/kernel/scripts/coccinelle/misc/irqf_oneshot.cocci @@ -0,0 +1,89 @@ +/// Make sure threaded IRQs without a primary handler are always request with +/// IRQF_ONESHOT +/// +// +// Confidence: Good +// Comments: +// Options: --no-includes + +virtual patch +virtual context +virtual org +virtual report + +@r1@ +expression dev; +expression irq; +expression thread_fn; +expression flags; +position p; +@@ +( +request_threaded_irq@p(irq, NULL, thread_fn, +( +flags | IRQF_ONESHOT +| +IRQF_ONESHOT +) +, ...) +| +devm_request_threaded_irq@p(dev, irq, NULL, thread_fn, +( +flags | IRQF_ONESHOT +| +IRQF_ONESHOT +) +, ...) +) + +@depends on patch@ +expression dev; +expression irq; +expression thread_fn; +expression flags; +position p != r1.p; +@@ +( +request_threaded_irq@p(irq, NULL, thread_fn, +( +-0 ++IRQF_ONESHOT +| +-flags ++flags | IRQF_ONESHOT +) +, ...) +| +devm_request_threaded_irq@p(dev, irq, NULL, thread_fn, +( +-0 ++IRQF_ONESHOT +| +-flags ++flags | IRQF_ONESHOT +) +, ...) +) + +@depends on context@ +position p != r1.p; +@@ +*request_threaded_irq@p(...) + +@match depends on report || org@ +expression irq; +position p != r1.p; +@@ +request_threaded_irq@p(irq, NULL, ...) + +@script:python depends on org@ +p << match.p; +@@ +msg = "ERROR: Threaded IRQ with no primary handler requested without IRQF_ONESHOT" +coccilib.org.print_todo(p[0],msg) + +@script:python depends on report@ +p << match.p; +@@ +msg = "ERROR: Threaded IRQ with no primary handler requested without IRQF_ONESHOT" +coccilib.report.print_report(p[0],msg) diff --git a/kernel/scripts/coccinelle/misc/noderef.cocci b/kernel/scripts/coccinelle/misc/noderef.cocci new file mode 100644 index 000000000..80a831c91 --- /dev/null +++ b/kernel/scripts/coccinelle/misc/noderef.cocci @@ -0,0 +1,65 @@ +/// sizeof when applied to a pointer typed expression gives the size of +/// the pointer +/// +// Confidence: High +// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: +// Options: --no-includes --include-headers + +virtual org +virtual report +virtual context +virtual patch + +@depends on patch@ +expression *x; +expression f; +type T; +@@ + +( +x = <+... sizeof( +- x ++ *x + ) ...+> +| +f(...,(T)(x),...,sizeof( +- x ++ *x + ),...) +| +f(...,sizeof(x),...,(T)( +- x ++ *x + ),...) +) + +@r depends on !patch@ +expression *x; +expression f; +position p; +type T; +@@ + +( +*x = <+... sizeof@p(x) ...+> +| +*f(...,(T)(x),...,sizeof@p(x),...) +| +*f(...,sizeof@p(x),...,(T)(x),...) +) + +@script:python depends on org@ +p << r.p; +@@ + +cocci.print_main("application of sizeof to pointer",p) + +@script:python depends on report@ +p << r.p; +@@ + +msg = "ERROR: application of sizeof to pointer" +coccilib.report.print_report(p[0],msg) diff --git a/kernel/scripts/coccinelle/misc/of_table.cocci b/kernel/scripts/coccinelle/misc/of_table.cocci new file mode 100644 index 000000000..3c934046a --- /dev/null +++ b/kernel/scripts/coccinelle/misc/of_table.cocci @@ -0,0 +1,62 @@ +/// Make sure of_device_id tables are NULL terminated +// +// Keywords: of_table +// Confidence: Medium +// Options: --include-headers + +virtual patch +virtual context +virtual org +virtual report + +@depends on context@ +identifier var, arr; +expression E; +@@ +struct of_device_id arr[] = { + ..., + { + .var = E, +* } +}; + +@depends on patch@ +identifier var, arr; +expression E; +@@ +struct of_device_id arr[] = { + ..., + { + .var = E, +- } ++ }, ++ { } +}; + +@r depends on org || report@ +position p1; +identifier var, arr; +expression E; +@@ +struct of_device_id arr[] = { + ..., + { + .var = E, + } + @p1 +}; + +@script:python depends on org@ +p1 << r.p1; +arr << r.arr; +@@ + +cocci.print_main(arr,p1) + +@script:python depends on report@ +p1 << r.p1; +arr << r.arr; +@@ + +msg = "%s is not NULL terminated at line %s" % (arr, p1[0].line) +coccilib.report.print_report(p1[0],msg) diff --git a/kernel/scripts/coccinelle/misc/orplus.cocci b/kernel/scripts/coccinelle/misc/orplus.cocci new file mode 100644 index 000000000..81fabf379 --- /dev/null +++ b/kernel/scripts/coccinelle/misc/orplus.cocci @@ -0,0 +1,55 @@ +/// Check for constants that are added but are used elsewhere as bitmasks +/// The results should be checked manually to ensure that the nonzero +/// bits in the two constants are actually disjoint. +/// +// Confidence: Moderate +// Copyright: (C) 2013 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2013 Gilles Muller, INRIA/LIP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: +// Options: --no-includes --include-headers + +virtual org +virtual report +virtual context + +@r@ +constant c; +identifier i; +expression e; +@@ + +( +e | c@i +| +e & c@i +| +e |= c@i +| +e &= c@i +) + +@s@ +constant r.c,c1; +identifier i1; +position p; +@@ + +( + c1 + c - 1 +| +*c1@i1 +@p c +) + +@script:python depends on org@ +p << s.p; +@@ + +cocci.print_main("sum of probable bitmasks, consider |",p) + +@script:python depends on report@ +p << s.p; +@@ + +msg = "WARNING: sum of probable bitmasks, consider |" +coccilib.report.print_report(p[0],msg) diff --git a/kernel/scripts/coccinelle/misc/returnvar.cocci b/kernel/scripts/coccinelle/misc/returnvar.cocci new file mode 100644 index 000000000..605955a91 --- /dev/null +++ b/kernel/scripts/coccinelle/misc/returnvar.cocci @@ -0,0 +1,66 @@ +/// +/// Removes unneeded variable used to store return value. +/// +// Confidence: Moderate +// Copyright: (C) 2012 Peter Senna Tschudin, INRIA/LIP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: Comments on code can be deleted if near code that is removed. +// "when strict" can be removed to get more hits, but adds false +// positives +// Options: --no-includes --include-headers + +virtual patch +virtual report +virtual context +virtual org + +@depends on patch@ +type T; +constant C; +identifier ret; +@@ +- T ret = C; +... when != ret + when strict +return +- ret ++ C +; + +@depends on context@ +type T; +constant C; +identifier ret; +@@ +* T ret = C; +... when != ret + when strict +* return ret; + +@r1 depends on report || org@ +type T; +constant C; +identifier ret; +position p1, p2; +@@ +T ret@p1 = C; +... when != ret + when strict +return ret@p2; + +@script:python depends on report@ +p1 << r1.p1; +p2 << r1.p2; +C << r1.C; +ret << r1.ret; +@@ +coccilib.report.print_report(p1[0], "Unneeded variable: \"" + ret + "\". Return \"" + C + "\" on line " + p2[0].line) + +@script:python depends on org@ +p1 << r1.p1; +p2 << r1.p2; +C << r1.C; +ret << r1.ret; +@@ +cocci.print_main("unneeded \"" + ret + "\" variable", p1) +cocci.print_sec("return " + C + " here", p2) diff --git a/kernel/scripts/coccinelle/misc/semicolon.cocci b/kernel/scripts/coccinelle/misc/semicolon.cocci new file mode 100644 index 000000000..a47eba2ed --- /dev/null +++ b/kernel/scripts/coccinelle/misc/semicolon.cocci @@ -0,0 +1,83 @@ +/// +/// Removes unneeded semicolon. +/// +// Confidence: Moderate +// Copyright: (C) 2012 Peter Senna Tschudin, INRIA/LIP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: Some false positives on empty default cases in switch statements. +// Options: --no-includes --include-headers + +virtual patch +virtual report +virtual context +virtual org + +@r_default@ +position p; +@@ +switch (...) +{ +default: ...;@p +} + +@r_case@ +position p; +@@ +( +switch (...) +{ +case ...:;@p +} +| +switch (...) +{ +case ...:... +case ...:;@p +} +| +switch (...) +{ +case ...:... +case ...: +case ...:;@p +} +) + +@r1@ +statement S; +position p1; +position p != {r_default.p, r_case.p}; +identifier label; +@@ +( +label:; +| +S@p1;@p +) + +@script:python@ +p << r1.p; +p1 << r1.p1; +@@ +if p[0].line != p1[0].line_end: + cocci.include_match(False) + +@depends on patch@ +position r1.p; +@@ +-;@p + +@script:python depends on report@ +p << r1.p; +@@ +coccilib.report.print_report(p[0],"Unneeded semicolon") + +@depends on context@ +position r1.p; +@@ +*;@p + +@script:python depends on org@ +p << r1.p; +@@ +cocci.print_main("Unneeded semicolon",p) diff --git a/kernel/scripts/coccinelle/misc/simple_return.cocci b/kernel/scripts/coccinelle/misc/simple_return.cocci new file mode 100644 index 000000000..47f7084b6 --- /dev/null +++ b/kernel/scripts/coccinelle/misc/simple_return.cocci @@ -0,0 +1,180 @@ +/// Simplify a trivial if-return sequence. Possibly combine with a +/// preceding function call. +// +// Confidence: High +// Copyright: (C) 2014 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2014 Gilles Muller, INRIA/LiP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: +// Options: --no-includes --include-headers + +virtual patch +virtual context +virtual org +virtual report + +@r depends on patch@ +local idexpression e; +identifier i,f,fn; +@@ + +fn(...) { <... +- e@i = ++ return + f(...); +-if (i != 0) return i; +-return 0; +...> } + +@depends on patch@ +identifier r.i; +type t; +@@ + +-t i; + ... when != i + +@depends on patch@ +expression e; +@@ + +-if (e != 0) + return e; +-return 0; + +// ----------------------------------------------------------------------- + +@s1 depends on context || org || report@ +local idexpression e; +identifier i,f,fn; +position p,p1,p2; +@@ + +fn(...) { <... +* e@i@p = f(...); + if (\(i@p1 != 0\|i@p2 < 0\)) + return i; + return 0; +...> } + +@s2 depends on context || org || report forall@ +identifier s1.i; +type t; +position q,s1.p; +expression e,f; +@@ + +* t i@q; + ... when != i + e@p = f(...); + +@s3 depends on context || org || report@ +expression e; +position p1!=s1.p1; +position p2!=s1.p2; +@@ + +*if (\(e@p1 != 0\|e@p2 < 0\)) + return e; + return 0; + +// ----------------------------------------------------------------------- + +@script:python depends on org@ +p << s1.p; +p1 << s1.p1; +q << s2.q; +@@ + +cocci.print_main("decl",q) +cocci.print_secs("use",p) +cocci.include_match(False) + +@script:python depends on org@ +p << s1.p; +p2 << s1.p2; +q << s2.q; +@@ + +cocci.print_main("decl",q) +cocci.print_secs("use with questionable test",p) +cocci.include_match(False) + +@script:python depends on org@ +p << s1.p; +p1 << s1.p1; +@@ + +cocci.print_main("use",p) + +@script:python depends on org@ +p << s1.p; +p2 << s1.p2; +@@ + +cocci.print_main("use with questionable test",p) + +@script:python depends on org@ +p << s3.p1; +@@ + +cocci.print_main("test",p) + +@script:python depends on org@ +p << s3.p2; +@@ + +cocci.print_main("questionable test",p) + +// ----------------------------------------------------------------------- + +@script:python depends on report@ +p << s1.p; +p1 << s1.p1; +q << s2.q; +@@ + +msg = "WARNING: end returns can be simpified and declaration on line %s can be dropped" % (q[0].line) +coccilib.report.print_report(p[0],msg) +cocci.include_match(False) + +@script:python depends on report@ +p << s1.p; +p1 << s1.p1; +q << s2.q +; +@@ + +msg = "WARNING: end returns may be simpified if negative or 0 value and declaration on line %s can be dropped" % (q[0].line) +coccilib.report.print_report(p[0],msg) +cocci.include_match(False) + +@script:python depends on report@ +p << s1.p; +p1 << s1.p1; +@@ + +msg = "WARNING: end returns can be simpified" +coccilib.report.print_report(p[0],msg) + +@script:python depends on report@ +p << s1.p; +p2 << s1.p2; +@@ + +msg = "WARNING: end returns can be simpified if negative or 0 value" +coccilib.report.print_report(p[0],msg) + +@script:python depends on report@ +p << s3.p1; +@@ + +msg = "WARNING: end returns can be simpified" +coccilib.report.print_report(p[0],msg) + +@script:python depends on report@ +p << s3.p2; +@@ + +msg = "WARNING: end returns can be simpified if tested value is negative or 0" +coccilib.report.print_report(p[0],msg) diff --git a/kernel/scripts/coccinelle/misc/warn.cocci b/kernel/scripts/coccinelle/misc/warn.cocci new file mode 100644 index 000000000..d2e5b6ced --- /dev/null +++ b/kernel/scripts/coccinelle/misc/warn.cocci @@ -0,0 +1,109 @@ +/// Use WARN(1,...) rather than printk followed by WARN_ON(1) +/// +// Confidence: High +// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: +// Options: --no-includes --include-headers + +virtual patch +virtual context +virtual org +virtual report + +@bad1@ +position p; +@@ + +printk(...); +printk@p(...); +WARN_ON(1); + +@r1 depends on context || report || org@ +position p != bad1.p; +@@ + + printk@p(...); +*WARN_ON(1); + +@script:python depends on org@ +p << r1.p; +@@ + +cocci.print_main("printk + WARN_ON can be just WARN",p) + +@script:python depends on report@ +p << r1.p; +@@ + +msg = "SUGGESTION: printk + WARN_ON can be just WARN" +coccilib.report.print_report(p[0],msg) + +@ok1 depends on patch@ +expression list es; +position p != bad1.p; +@@ + +-printk@p( ++WARN(1, + es); +-WARN_ON(1); + +@depends on patch@ +expression list ok1.es; +@@ + +if (...) +- { + WARN(1,es); +- } + +// -------------------------------------------------------------------- + +@bad2@ +position p; +@@ + +printk(...); +printk@p(...); +WARN_ON_ONCE(1); + +@r2 depends on context || report || org@ +position p != bad1.p; +@@ + + printk@p(...); +*WARN_ON_ONCE(1); + +@script:python depends on org@ +p << r2.p; +@@ + +cocci.print_main("printk + WARN_ON_ONCE can be just WARN_ONCE",p) + +@script:python depends on report@ +p << r2.p; +@@ + +msg = "SUGGESTION: printk + WARN_ON_ONCE can be just WARN_ONCE" +coccilib.report.print_report(p[0],msg) + +@ok2 depends on patch@ +expression list es; +position p != bad2.p; +@@ + +-printk@p( ++WARN_ONCE(1, + es); +-WARN_ON_ONCE(1); + +@depends on patch@ +expression list ok2.es; +@@ + +if (...) +- { + WARN_ONCE(1,es); +- } |