eventfs: Use SRCU for freeing eventfs_inodes

BugLink: https://bugs.launchpad.net/bugs/2083656

commit 8e556432477e97ad6179c61b61a32bf5f1af2355 upstream.

To mirror the SRCU lock held in eventfs_iterate() when iterating over
eventfs inodes, use call_srcu() to free them too.

This was accidentally(?) degraded to RCU in commit 43aa6f97c2
("eventfs: Get rid of dentry pointers without refcounts").

Cc: Ajay Kaher <ajay.kaher@broadcom.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/20240723210755.8970-1-minipli@grsecurity.net
Fixes: 43aa6f97c2 ("eventfs: Get rid of dentry pointers without refcounts")
Signed-off-by: Mathias Krause <minipli@grsecurity.net>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>

This commit is contained in:

Mathias Krause

2024-07-23 23:07:53 +02:00

committed by

Mehmet Basaran

parent b62fa2b0f2

commit 5c4cbfbedd

1 changed files with 1 additions and 1 deletions

									
										fs/tracefs/event_inode.c
									
		+1
		-1
	
												View File
												
				@@ -113,7 +113,7 @@ static void release_ei(struct kref *ref)

							entry->release(entry->name, ei->data);

					}

					call_rcu(&ei->rcu, free_ei_rcu);

					call_srcu(&eventfs_srcu, &ei->rcu, free_ei_rcu);

				}

				static inline void put_ei(struct eventfs_inode *ei)