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author | Julia Lawall <Julia.Lawall@lip6.fr> | 2015-08-30 22:18:14 +0200 |
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committer | Michal Marek <mmarek@suse.cz> | 2015-10-26 20:54:28 +0100 |
commit | 02da7b42777c159c6897e233e6c53d5581c07dab (patch) | |
tree | 98b1f5efbc65442f5c517cb022e5abd9f2478cdb /scripts/coccinelle | |
parent | 74a8478f9ea2b3e70640a64db8acd54d4225a2c4 (diff) | |
download | linux-02da7b42777c159c6897e233e6c53d5581c07dab.tar.gz linux-02da7b42777c159c6897e233e6c53d5581c07dab.tar.bz2 linux-02da7b42777c159c6897e233e6c53d5581c07dab.zip |
coccinelle: tests: improve odd_ptr_err.cocci
The original version only considered the case where the then branch
contains only one call to PTR_ERR. Reimplement the whole thing to allow
multiple calls, with potentially different arguments.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'scripts/coccinelle')
-rw-r--r-- | scripts/coccinelle/tests/odd_ptr_err.cocci | 120 |
1 files changed, 86 insertions, 34 deletions
diff --git a/scripts/coccinelle/tests/odd_ptr_err.cocci b/scripts/coccinelle/tests/odd_ptr_err.cocci index cfe0a35cf2dd..dfc6b40c2969 100644 --- a/scripts/coccinelle/tests/odd_ptr_err.cocci +++ b/scripts/coccinelle/tests/odd_ptr_err.cocci @@ -1,12 +1,11 @@ /// PTR_ERR should access the value just tested by IS_ERR -//# There can be false positives in the patch case, where it is the call +//# There can be false positives in the patch case, where it is the call to //# IS_ERR that is wrong. /// // Confidence: High -// Copyright: (C) 2012 Julia Lawall, INRIA. GPLv2. -// Copyright: (C) 2012 Gilles Muller, INRIA. GPLv2. +// Copyright: (C) 2012, 2015 Julia Lawall, INRIA. GPLv2. +// Copyright: (C) 2012, 2015 Gilles Muller, INRIA. GPLv2. // URL: http://coccinelle.lip6.fr/ -// Comments: // Options: --no-includes --include-headers virtual patch @@ -14,52 +13,105 @@ virtual context virtual org virtual report -@depends on patch@ -expression e,e1; +@ok1 exists@ +expression x,e; +position p; @@ +if (IS_ERR(x=e) || ...) { + <... + PTR_ERR@p(x) + ...> +} + +@ok2 exists@ +expression x,e1,e2; +position p; +@@ + +if (IS_ERR(x) || ...) { + <... ( -if (IS_ERR(e)) { ... PTR_ERR(e) ... } + PTR_ERR@p(\(e1 ? e2 : x\|e1 ? x : e2\)) | -if (IS_ERR(e=e1)) { ... PTR_ERR(e) ... } + PTR_ERR@p(x) +) + ...> +} + +@r1 depends on patch && !context && !org && !report exists@ +expression x,y; +position p != {ok1.p,ok2.p}; +@@ + +if (IS_ERR(x) || ...) { + ... when any + when != IS_ERR(...) +( + PTR_ERR(x) | -if (IS_ERR(e)) - { ... - PTR_ERR( -- e1 -+ e + PTR_ERR@p( +- y ++ x ) - ... } ) + ... when any +} + +// ---------------------------------------------------------------------------- -@r depends on !patch@ -expression e,e1; -position p1,p2; +@r1_context depends on !patch && (context || org || report) exists@ +position p != {ok1.p,ok2.p}; +expression x, y; +position j0, j1; @@ +if (IS_ERR@j0(x) || ...) { + ... when any + when != IS_ERR(...) ( -if (IS_ERR(e)) { ... PTR_ERR(e) ... } + PTR_ERR(x) | -if (IS_ERR(e=e1)) { ... PTR_ERR(e) ... } -| -*if (IS_ERR@p1(e)) - { ... -* PTR_ERR@p2(e1) - ... } + PTR_ERR@j1@p( + y + ) ) + ... when any +} -@script:python depends on org@ -p1 << r.p1; -p2 << r.p2; +@r1_disj depends on !patch && (context || org || report) exists@ +position p != {ok1.p,ok2.p}; +expression x, y; +position r1_context.j0, r1_context.j1; @@ -cocci.print_main("inconsistent IS_ERR and PTR_ERR",p1) -cocci.print_secs("PTR_ERR",p2) +* if (IS_ERR@j0(x) || ...) { + ... when any + when != IS_ERR(...) +* PTR_ERR@j1@p( + y + ) + ... when any +} -@script:python depends on report@ -p1 << r.p1; -p2 << r.p2; +// ---------------------------------------------------------------------------- + +@script:python r1_org depends on org@ +j0 << r1_context.j0; +j1 << r1_context.j1; @@ -msg = "inconsistent IS_ERR and PTR_ERR, PTR_ERR on line %s" % (p2[0].line) -coccilib.report.print_report(p1[0],msg) +msg = "inconsistent IS_ERR and PTR_ERR" +coccilib.org.print_todo(j0[0], msg) +coccilib.org.print_link(j1[0], "") + +// ---------------------------------------------------------------------------- + +@script:python r1_report depends on report@ +j0 << r1_context.j0; +j1 << r1_context.j1; +@@ + +msg = "inconsistent IS_ERR and PTR_ERR on line %s." % (j1[0].line) +coccilib.report.print_report(j0[0], msg) + |