projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 2e1e1605 NP |
1 | /// This semantic patch looks for kmalloc etc that are not followed by a |
| 2 | /// NULL check. It only gives a report in the case where there is some | |
| 3 | /// error handling code later in the function, which may be helpful | |
| 4 | /// in determining what the error handling code for the call to kmalloc etc | |
| 5 | /// should be. | |
| 6 | /// | |
| 7 | // Confidence: High | |
| 8 | // Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2. | |
| 9 | // Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2. | |
| 10 | // Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2. | |
| 11 | // URL: http://coccinelle.lip6.fr/ | |
| 12 | // Comments: | |
| 13 | // Options: -no_includes -include_headers | |
| 14 | ||
| 15 | virtual context | |
| 16 | virtual org | |
| 17 | virtual report | |
| 18 | ||
| 19 | @withtest@ | |
| 20 | expression x; | |
| 21 | position p; | |
| 22 | identifier f,fld; | |
| 23 | @@ | |
| 24 | ||
| 25 | x@p = f(...); | |
| 26 | ... when != x->fld | |
| 27 | \(x == NULL \| x != NULL\) | |
| 28 | ||
| 29 | @fixed depends on context && !org && !report@ | |
| 30 | expression x,x1; | |
| 31 | position p1 != withtest.p; | |
| 32 | statement S; | |
| 33 | position any withtest.p; | |
| 34 | identifier f; | |
| 35 | @@ | |
| 36 | ||
| 37 | *x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); | |
| 38 | ... | |
| 39 | *x1@p = f(...); | |
| 40 | if (!x1) S | |
| 41 | ||
| 42 | // ------------------------------------------------------------------------ | |
| 43 | ||
| 44 | @rfixed depends on (org || report) && !context exists@ | |
| 45 | expression x,x1; | |
| 46 | position p1 != withtest.p; | |
| 47 | position p2; | |
| 48 | statement S; | |
| 49 | position any withtest.p; | |
| 50 | identifier f; | |
| 51 | @@ | |
| 52 | ||
| 53 | x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); | |
| 54 | ... | |
| 55 | x1@p = f@p2(...); | |
| 56 | if (!x1) S | |
| 57 | ||
| 58 | @script:python depends on org@ | |
| 59 | p1 << rfixed.p1; | |
| 60 | p2 << rfixed.p2; | |
| 61 | @@ | |
| 62 | ||
| 63 | cocci.print_main("alloc call",p1) | |
| 64 | cocci.print_secs("possible model",p2) | |
| 65 | ||
| 66 | @script:python depends on report@ | |
| 67 | p1 << rfixed.p1; | |
| 68 | p2 << rfixed.p2; | |
| 69 | @@ | |
| 70 | ||
| 71 | msg = "alloc with no test, possible model on line %s" % (p2[0].line) | |
| 72 | coccilib.report.print_report(p1[0],msg) |