| /// Find nested lock+irqsave functions that use the same flags variables |
| /// |
| // Confidence: High |
| // 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: |
| // Options: --no-includes --include-headers |
| |
| virtual context |
| virtual org |
| virtual report |
| |
| @r exists@ |
| expression lock1,lock2,flags; |
| position p1,p2; |
| @@ |
| |
| ( |
| spin_lock_irqsave@p1(lock1,flags) |
| | |
| read_lock_irqsave@p1(lock1,flags) |
| | |
| write_lock_irqsave@p1(lock1,flags) |
| ) |
| ... when != flags |
| ( |
| spin_lock_irqsave(lock1,flags) |
| | |
| read_lock_irqsave(lock1,flags) |
| | |
| write_lock_irqsave(lock1,flags) |
| | |
| spin_lock_irqsave@p2(lock2,flags) |
| | |
| read_lock_irqsave@p2(lock2,flags) |
| | |
| write_lock_irqsave@p2(lock2,flags) |
| ) |
| |
| @d exists@ |
| expression f <= r.flags; |
| expression lock1,lock2,flags; |
| position r.p1, r.p2; |
| @@ |
| |
| ( |
| *spin_lock_irqsave@p1(lock1,flags) |
| | |
| *read_lock_irqsave@p1(lock1,flags) |
| | |
| *write_lock_irqsave@p1(lock1,flags) |
| ) |
| ... when != f |
| ( |
| *spin_lock_irqsave@p2(lock2,flags) |
| | |
| *read_lock_irqsave@p2(lock2,flags) |
| | |
| *write_lock_irqsave@p2(lock2,flags) |
| ) |
| |
| // ---------------------------------------------------------------------- |
| |
| @script:python depends on d && org@ |
| p1 << r.p1; |
| p2 << r.p2; |
| @@ |
| |
| cocci.print_main("original lock",p1) |
| cocci.print_secs("nested lock+irqsave that reuses flags",p2) |
| |
| @script:python depends on d && report@ |
| p1 << r.p1; |
| p2 << r.p2; |
| @@ |
| |
| msg="ERROR: nested lock+irqsave that reuses flags from line %s." % (p1[0].line) |
| coccilib.report.print_report(p2[0], msg) |