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eventfs: Use SRCU for freeing eventfs_inodes 

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 43aa6f97c2d0
("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: 43aa6f97c2d0 ("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>
This commit is contained in:
Mathias Krause 2024-07-23 23:07:53 +02:00 committed by Greg Kroah-Hartman
parent b59603a114
commit 2ef3d120d1
1 changed files with 1 additions and 1 deletions
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2
fs/tracefs/event_inode.c
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@ -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)