| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /// The various basic memory allocation functions don't return ERR_PTR |
| 3 | /// |
| 4 | // Confidence: High |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 5 | // Copyright: (C) 2010-2012 Nicolas Palix. |
| 6 | // Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. |
| 7 | // Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 8 | // URL: http://coccinelle.lip6.fr/ |
| 9 | // Comments: |
| 10 | // Options: --no-includes --include-headers |
| 11 | |
| 12 | virtual patch |
| 13 | virtual context |
| 14 | virtual org |
| 15 | virtual report |
| 16 | |
| 17 | @depends on patch@ |
| 18 | expression x,E; |
| 19 | @@ |
| 20 | |
| 21 | x = \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...) |
| 22 | ... when != x = E |
| 23 | - IS_ERR(x) |
| 24 | + !x |
| 25 | |
| 26 | @r depends on !patch exists@ |
| 27 | expression x,E; |
| 28 | position p1,p2; |
| 29 | @@ |
| 30 | |
| 31 | *x = \(kmalloc@p1\|kzalloc@p1\|kcalloc@p1\|kmem_cache_alloc@p1\|kmem_cache_zalloc@p1\|kmem_cache_alloc_node@p1\|kmalloc_node@p1\|kzalloc_node@p1\)(...) |
| 32 | ... when != x = E |
| 33 | * IS_ERR@p2(x) |
| 34 | |
| 35 | @script:python depends on org@ |
| 36 | p1 << r.p1; |
| 37 | p2 << r.p2; |
| 38 | @@ |
| 39 | |
| 40 | cocci.print_main("alloc call",p1) |
| 41 | cocci.print_secs("IS_ERR that should be NULL tests",p2) |
| 42 | |
| 43 | @script:python depends on report@ |
| 44 | p1 << r.p1; |
| 45 | p2 << r.p2; |
| 46 | @@ |
| 47 | |
| 48 | msg = "ERROR: allocation function on line %s returns NULL not ERR_PTR on failure" % (p1[0].line) |
| 49 | coccilib.report.print_report(p2[0], msg) |