93f1446849
spatch has changed its option scheme. E.g., --no_show_diff is now --no-show-diff This patch updates: - scripts/coccicheck - Semantic patches under scripts/coccinelle/ Signed-off-by: Nicolas Palix <nicolas.palix@imag.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
105 lines
2.1 KiB
Text
105 lines
2.1 KiB
Text
/// Find functions that refer to GFP_KERNEL but are called with locks held.
|
|
//# The proposed change of converting the GFP_KERNEL is not necessarily the
|
|
//# correct one. It may be desired to unlock the lock, or to not call the
|
|
//# function under the lock in the first place.
|
|
///
|
|
// Confidence: Moderate
|
|
// Copyright: (C) 2012 Nicolas Palix. GPLv2.
|
|
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2.
|
|
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2.
|
|
// URL: http://coccinelle.lip6.fr/
|
|
// Comments:
|
|
// Options: --no-includes --include-headers
|
|
|
|
virtual patch
|
|
virtual context
|
|
virtual org
|
|
virtual report
|
|
|
|
@gfp exists@
|
|
identifier fn;
|
|
position p;
|
|
@@
|
|
|
|
fn(...) {
|
|
... when != read_unlock_irq(...)
|
|
when != write_unlock_irq(...)
|
|
when != read_unlock_irqrestore(...)
|
|
when != write_unlock_irqrestore(...)
|
|
when != spin_unlock(...)
|
|
when != spin_unlock_irq(...)
|
|
when != spin_unlock_irqrestore(...)
|
|
when != local_irq_enable(...)
|
|
when any
|
|
GFP_KERNEL@p
|
|
... when any
|
|
}
|
|
|
|
@locked exists@
|
|
identifier gfp.fn;
|
|
position p1,p2;
|
|
@@
|
|
|
|
(
|
|
read_lock_irq@p1
|
|
|
|
|
write_lock_irq@p1
|
|
|
|
|
read_lock_irqsave@p1
|
|
|
|
|
write_lock_irqsave@p1
|
|
|
|
|
spin_lock@p1
|
|
|
|
|
spin_trylock@p1
|
|
|
|
|
spin_lock_irq@p1
|
|
|
|
|
spin_lock_irqsave@p1
|
|
|
|
|
local_irq_disable@p1
|
|
)
|
|
(...)
|
|
... when != read_unlock_irq(...)
|
|
when != write_unlock_irq(...)
|
|
when != read_unlock_irqrestore(...)
|
|
when != write_unlock_irqrestore(...)
|
|
when != spin_unlock(...)
|
|
when != spin_unlock_irq(...)
|
|
when != spin_unlock_irqrestore(...)
|
|
when != local_irq_enable(...)
|
|
fn@p2(...)
|
|
|
|
@depends on locked && patch@
|
|
position gfp.p;
|
|
@@
|
|
|
|
- GFP_KERNEL@p
|
|
+ GFP_ATOMIC
|
|
|
|
@depends on locked && !patch@
|
|
position gfp.p;
|
|
@@
|
|
|
|
* GFP_KERNEL@p
|
|
|
|
@script:python depends on !patch && org@
|
|
p << gfp.p;
|
|
fn << gfp.fn;
|
|
p1 << locked.p1;
|
|
p2 << locked.p2;
|
|
@@
|
|
|
|
cocci.print_main("lock",p1)
|
|
cocci.print_secs("call",p2)
|
|
cocci.print_secs("GFP_KERNEL",p)
|
|
|
|
@script:python depends on !patch && report@
|
|
p << gfp.p;
|
|
fn << gfp.fn;
|
|
p1 << locked.p1;
|
|
p2 << locked.p2;
|
|
@@
|
|
|
|
msg = "ERROR: function %s called on line %s inside lock on line %s but uses GFP_KERNEL" % (fn,p2[0].line,p1[0].line)
|
|
coccilib.report.print_report(p[0], msg)
|