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authorTrond Myklebust <trond.myklebust@hammerspace.com>2022-04-03 22:58:11 +0300
committerTrond Myklebust <trond.myklebust@hammerspace.com>2022-04-07 23:19:47 +0300
commitf00432063db1a0db484e85193eccc6845435b80e (patch)
treea0e0a9341d7355b4b840521190b24f08e4d15ecd /fs/file_table.c
parent830f1111d90e8770fcfad8bd5628e8ae6fecec06 (diff)
downloadlinux-f00432063db1a0db484e85193eccc6845435b80e.tar.xz
SUNRPC: Ensure we flush any closed sockets before xs_xprt_free()
We must ensure that all sockets are closed before we call xprt_free() and release the reference to the net namespace. The problem is that calling fput() will defer closing the socket until delayed_fput() gets called. Let's fix the situation by allowing rpciod and the transport teardown code (which runs on the system wq) to call __fput_sync(), and directly close the socket. Reported-by: Felix Fu <foyjog@gmail.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Fixes: a73881c96d73 ("SUNRPC: Fix an Oops in udp_poll()") Cc: stable@vger.kernel.org # 5.1.x: 3be232f11a3c: SUNRPC: Prevent immediate close+reconnect Cc: stable@vger.kernel.org # 5.1.x: 89f42494f92f: SUNRPC: Don't call connect() more than once on a TCP socket Cc: stable@vger.kernel.org # 5.1.x Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/file_table.c')
-rw-r--r--fs/file_table.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/file_table.c b/fs/file_table.c
index 7d2e692b66a9..ada8fe814db9 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -412,6 +412,7 @@ void __fput_sync(struct file *file)
}
EXPORT_SYMBOL(fput);
+EXPORT_SYMBOL(__fput_sync);
void __init files_init(void)
{