| Nicolas Palix | c75b81b | 2010-08-24 17:38:55 +0200 | [diff] [blame] | 1 | /// The various basic memory allocation functions don't return ERR_PTR |
| 2 | /// |
| 3 | // Confidence: High |
| Julia Lawall | 29a36d4 | 2012-01-14 23:41:54 +0100 | [diff] [blame] | 4 | // Copyright: (C) 2010-2012 Nicolas Palix. GPLv2. |
| 5 | // Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. GPLv2. |
| 6 | // Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. GPLv2. |
| Nicolas Palix | c75b81b | 2010-08-24 17:38:55 +0200 | [diff] [blame] | 7 | // URL: http://coccinelle.lip6.fr/ |
| 8 | // Comments: |
| 9 | // Options: -no_includes -include_headers |
| 10 | |
| 11 | virtual patch |
| Julia Lawall | 29a36d4 | 2012-01-14 23:41:54 +0100 | [diff] [blame] | 12 | virtual context |
| 13 | virtual org |
| 14 | virtual report |
| Nicolas Palix | c75b81b | 2010-08-24 17:38:55 +0200 | [diff] [blame] | 15 | |
| Julia Lawall | 29a36d4 | 2012-01-14 23:41:54 +0100 | [diff] [blame] | 16 | @depends on patch@ |
| Nicolas Palix | c75b81b | 2010-08-24 17:38:55 +0200 | [diff] [blame] | 17 | expression x,E; |
| 18 | @@ |
| 19 | |
| 20 | x = \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...) |
| 21 | ... when != x = E |
| 22 | - IS_ERR(x) |
| 23 | + !x |
| Julia Lawall | 29a36d4 | 2012-01-14 23:41:54 +0100 | [diff] [blame] | 24 | |
| 25 | @r depends on !patch exists@ |
| 26 | expression x,E; |
| 27 | position p1,p2; |
| 28 | @@ |
| 29 | |
| 30 | *x = \(kmalloc@p1\|kzalloc@p1\|kcalloc@p1\|kmem_cache_alloc@p1\|kmem_cache_zalloc@p1\|kmem_cache_alloc_node@p1\|kmalloc_node@p1\|kzalloc_node@p1\)(...) |
| 31 | ... when != x = E |
| 32 | * IS_ERR@p2(x) |
| 33 | |
| 34 | @script:python depends on org@ |
| 35 | p1 << r.p1; |
| 36 | p2 << r.p2; |
| 37 | @@ |
| 38 | |
| 39 | cocci.print_main("alloc call",p1) |
| 40 | cocci.print_secs("IS_ERR that should be NULL tests",p2) |
| 41 | |
| 42 | @script:python depends on report@ |
| 43 | p1 << r.p1; |
| 44 | p2 << r.p2; |
| 45 | @@ |
| 46 | |
| 47 | msg = "ERROR: allocation function on line %s returns NULL not ERR_PTR on failure" % (p1[0].line) |
| 48 | coccilib.report.print_report(p2[0], msg) |