From: Mathias Krause <minipli@xxxxxxxxxxxxxx>
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@xxxxxxxxxxxx>
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/20240723210755.8970-1-minipli@xxxxxxxxxxxxxx
Fixes: 43aa6f97c2d0 ("eventfs: Get rid of dentry pointers without refcounts")
Signed-off-by: Mathias Krause <minipli@xxxxxxxxxxxxxx>
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/tracefs/event_inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/tracefs/event_inode.c
+++ b/fs/tracefs/event_inode.c
@@ -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)
Patches currently in stable-queue which might be from minipli@xxxxxxxxxxxxxx are
queue-6.6/tracefs-use-generic-inode-rcu-for-synchronizing-freeing.patch
queue-6.6/eventfs-don-t-return-null-in-eventfs_create_dir.patch
queue-6.6/tracefs-fix-inode-allocation.patch
queue-6.6/eventfs-use-srcu-for-freeing-eventfs_inodes.patch
