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smb: Initialize cfid->tcon before performing network ops

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[ Upstream commit c353ee4fb119a2582d0e011f66a76a38f5cf984d ]

Avoid leaking a tcon ref when a lease break races with opening the
cached directory. Processing the leak break might take a reference to
the tcon in cached_dir_lease_break() and then fail to release the ref in
cached_dir_offload_close, since cfid->tcon is still NULL.

Fixes: ebe98f1447 ("cifs: enable caching of directories for which a lease is held")
Signed-off-by: Paul Aurich <paul@darkrain42.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Paul Aurich
2024-11-26 18:50:31 -06:00
committed by Greg Kroah-Hartman
parent 0dd7a8b948
commit 625e2357c8
1 changed files with 1 additions and 1 deletions
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2
fs/smb/client/cached_dir.c
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@@ -227,6 +227,7 @@ replay_again:
}
}
cfid->dentry = dentry;
cfid->tcon = tcon;
/*
* We do not hold the lock for the open because in case
@@ -298,7 +299,6 @@ replay_again:
}
goto oshr_free;
}
cfid->tcon = tcon;
cfid->is_open = true;
spin_lock(&cfids->cfid_list_lock);