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authorDavid Howells <dhowells@redhat.com>2011-12-13 18:49:04 +0400
committerJames Morris <jmorris@namei.org>2011-12-21 04:28:56 +0400
commit50345f1ea9cda4618d9c26e590a97ecd4bc7ac75 (patch)
tree57b03dc68f894df468a3ca3c3929e1aff48bd6c2 /net/dccp
parent428f32817505f67992e8efe62d6a9c7cbb3f2498 (diff)
downloadlinux-50345f1ea9cda4618d9c26e590a97ecd4bc7ac75.tar.xz
SELinux: Fix RCU deref check warning in sel_netport_insert()
Fix the following bug in sel_netport_insert() where rcu_dereference() should be rcu_dereference_protected() as sel_netport_lock is held. =================================================== [ INFO: suspicious rcu_dereference_check() usage. ] --------------------------------------------------- security/selinux/netport.c:127 invoked rcu_dereference_check() without protection! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 1 lock held by ossec-rootcheck/3323: #0: (sel_netport_lock){+.....}, at: [<ffffffff8117d775>] sel_netport_sid+0xbb/0x226 stack backtrace: Pid: 3323, comm: ossec-rootcheck Not tainted 3.1.0-rc8-fsdevel+ #1095 Call Trace: [<ffffffff8105cfb7>] lockdep_rcu_dereference+0xa7/0xb0 [<ffffffff8117d871>] sel_netport_sid+0x1b7/0x226 [<ffffffff8117d6ba>] ? sel_netport_avc_callback+0xbc/0xbc [<ffffffff8117556c>] selinux_socket_bind+0x115/0x230 [<ffffffff810a5388>] ? might_fault+0x4e/0x9e [<ffffffff810a53d1>] ? might_fault+0x97/0x9e [<ffffffff81171cf4>] security_socket_bind+0x11/0x13 [<ffffffff812ba967>] sys_bind+0x56/0x95 [<ffffffff81380dac>] ? sysret_check+0x27/0x62 [<ffffffff8105b767>] ? trace_hardirqs_on_caller+0x11e/0x155 [<ffffffff81076fcd>] ? audit_syscall_entry+0x17b/0x1ae [<ffffffff811b5eae>] ? trace_hardirqs_on_thunk+0x3a/0x3f [<ffffffff81380d7b>] system_call_fastpath+0x16/0x1b Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Paul Moore <paul@paul-moore.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: stable@kernel.org Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'net/dccp')
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