https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 31880c37c11e28cb81c70757e38392b42e695dc6 authored by Linus Torvalds on 08 April 2013, 03:49:54 UTC
Linux 3.9-rc6
Linux 3.9-rc6
Tip revision: 31880c3
call_kern.cocci
/// 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)