130 lines
2.2 KiB
Plaintext
130 lines
2.2 KiB
Plaintext
// Check if refcount_t type and API should be used
|
|
// instead of atomic_t type when dealing with refcounters
|
|
//
|
|
// Copyright (c) 2016-2017, Elena Reshetova, Intel Corporation
|
|
//
|
|
// Confidence: Moderate
|
|
// URL: http://coccinelle.lip6.fr/
|
|
// Options: --include-headers --very-quiet
|
|
|
|
virtual report
|
|
|
|
@r1 exists@
|
|
identifier a, x;
|
|
position p1, p2;
|
|
identifier fname =~ ".*free.*";
|
|
identifier fname2 =~ ".*destroy.*";
|
|
identifier fname3 =~ ".*del.*";
|
|
identifier fname4 =~ ".*queue_work.*";
|
|
identifier fname5 =~ ".*schedule_work.*";
|
|
identifier fname6 =~ ".*call_rcu.*";
|
|
|
|
@@
|
|
|
|
(
|
|
atomic_dec_and_test@p1(&(a)->x)
|
|
|
|
|
atomic_dec_and_lock@p1(&(a)->x, ...)
|
|
|
|
|
atomic_long_dec_and_lock@p1(&(a)->x, ...)
|
|
|
|
|
atomic_long_dec_and_test@p1(&(a)->x)
|
|
|
|
|
atomic64_dec_and_test@p1(&(a)->x)
|
|
|
|
|
local_dec_and_test@p1(&(a)->x)
|
|
)
|
|
...
|
|
(
|
|
fname@p2(a, ...);
|
|
|
|
|
fname2@p2(...);
|
|
|
|
|
fname3@p2(...);
|
|
|
|
|
fname4@p2(...);
|
|
|
|
|
fname5@p2(...);
|
|
|
|
|
fname6@p2(...);
|
|
)
|
|
|
|
|
|
@script:python depends on report@
|
|
p1 << r1.p1;
|
|
p2 << r1.p2;
|
|
@@
|
|
msg = "atomic_dec_and_test variation before object free at line %s."
|
|
coccilib.report.print_report(p1[0], msg % (p2[0].line))
|
|
|
|
@r4 exists@
|
|
identifier a, x, y;
|
|
position p1, p2;
|
|
identifier fname =~ ".*free.*";
|
|
|
|
@@
|
|
|
|
(
|
|
atomic_dec_and_test@p1(&(a)->x)
|
|
|
|
|
atomic_dec_and_lock@p1(&(a)->x, ...)
|
|
|
|
|
atomic_long_dec_and_lock@p1(&(a)->x, ...)
|
|
|
|
|
atomic_long_dec_and_test@p1(&(a)->x)
|
|
|
|
|
atomic64_dec_and_test@p1(&(a)->x)
|
|
|
|
|
local_dec_and_test@p1(&(a)->x)
|
|
)
|
|
...
|
|
y=a
|
|
...
|
|
fname@p2(y, ...);
|
|
|
|
|
|
@script:python depends on report@
|
|
p1 << r4.p1;
|
|
p2 << r4.p2;
|
|
@@
|
|
msg = "atomic_dec_and_test variation before object free at line %s."
|
|
coccilib.report.print_report(p1[0], msg % (p2[0].line))
|
|
|
|
@r2 exists@
|
|
identifier a, x;
|
|
position p1;
|
|
@@
|
|
|
|
(
|
|
atomic_add_unless(&(a)->x,-1,1)@p1
|
|
|
|
|
atomic_long_add_unless(&(a)->x,-1,1)@p1
|
|
|
|
|
atomic64_add_unless(&(a)->x,-1,1)@p1
|
|
)
|
|
|
|
@script:python depends on report@
|
|
p1 << r2.p1;
|
|
@@
|
|
msg = "atomic_add_unless"
|
|
coccilib.report.print_report(p1[0], msg)
|
|
|
|
@r3 exists@
|
|
identifier x;
|
|
position p1;
|
|
@@
|
|
|
|
(
|
|
x = atomic_add_return@p1(-1, ...);
|
|
|
|
|
x = atomic_long_add_return@p1(-1, ...);
|
|
|
|
|
x = atomic64_add_return@p1(-1, ...);
|
|
)
|
|
|
|
@script:python depends on report@
|
|
p1 << r3.p1;
|
|
@@
|
|
msg = "x = atomic_add_return(-1, ...)"
|
|
coccilib.report.print_report(p1[0], msg)
|