| Server IP : 104.21.38.3 / Your IP : 104.23.175.135 Web Server : Apache System : Linux krdc-ubuntu-s-2vcpu-4gb-amd-blr1-01.localdomain 5.15.0-142-generic #152-Ubuntu SMP Mon May 19 10:54:31 UTC 2025 x86_64 User : www ( 1000) PHP Version : 7.4.33 Disable Function : passthru,exec,system,putenv,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /usr/src/linux-headers-5.15.0-142-generic/scripts/coccinelle/locks/ |
Upload File : |
// SPDX-License-Identifier: GPL-2.0-only
/// Find double locks. False positives may occur when some paths cannot
/// occur at execution, due to the values of variables, and when there is
/// an intervening function call that releases the lock.
///
// Confidence: Moderate
// Copyright: (C) 2010 Nicolas Palix, DIKU.
// Copyright: (C) 2010 Julia Lawall, DIKU.
// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options: --no-includes --include-headers
virtual org
virtual report
@locked@
position p1;
expression E1;
position p;
@@
(
mutex_lock@p1
|
mutex_trylock@p1
|
spin_lock@p1
|
spin_trylock@p1
|
read_lock@p1
|
read_trylock@p1
|
write_lock@p1
|
write_trylock@p1
) (E1@p,...);
@balanced@
position p1 != locked.p1;
position locked.p;
identifier lock,unlock;
expression x <= locked.E1;
expression E,locked.E1;
expression E2;
@@
if (E) {
<+... when != E1
lock(E1@p,...)
...+>
}
... when != E1
when != \(x = E2\|&x\)
when forall
if (E) {
<+... when != E1
unlock@p1(E1,...)
...+>
}
@r depends on !balanced exists@
expression x <= locked.E1;
expression locked.E1;
expression E2;
identifier lock;
position locked.p,p1,p2;
@@
lock@p1 (E1@p,...);
... when != E1
when != \(x = E2\|&x\)
lock@p2 (E1,...);
@script:python depends on org@
p1 << r.p1;
p2 << r.p2;
lock << r.lock;
@@
cocci.print_main(lock,p1)
cocci.print_secs("second lock",p2)
@script:python depends on report@
p1 << r.p1;
p2 << r.p2;
lock << r.lock;
@@
msg = "second lock on line %s" % (p2[0].line)
coccilib.report.print_report(p1[0],msg)