This is a note to let you know that I've just added the patch titled
svcrpc: don't leak contexts on PROC_DESTROY
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
svcrpc-don-t-leak-contexts-on-proc_destroy.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 78794d1890708cf94e3961261e52dcec2cc34722 Mon Sep 17 00:00:00 2001
From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
Date: Mon, 9 Jan 2017 17:15:18 -0500
Subject: svcrpc: don't leak contexts on PROC_DESTROY
From: J. Bruce Fields <bfields@xxxxxxxxxx>
commit 78794d1890708cf94e3961261e52dcec2cc34722 upstream.
Context expiry times are in units of seconds since boot, not unix time.
The use of get_seconds() here therefore sets the expiry time decades in
the future. This prevents timely freeing of contexts destroyed by
client RPC_GSS_PROC_DESTROY requests. We'd still free them eventually
(when the module is unloaded or the container shut down), but a lot of
contexts could pile up before then.
Fixes: c5b29f885afe "sunrpc: use seconds since boot in expiry cache"
Reported-by: Andy Adamson <andros@xxxxxxxxxx>
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/sunrpc/auth_gss/svcauth_gss.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -1489,7 +1489,7 @@ svcauth_gss_accept(struct svc_rqst *rqst
case RPC_GSS_PROC_DESTROY:
if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq))
goto auth_err;
- rsci->h.expiry_time = get_seconds();
+ rsci->h.expiry_time = seconds_since_boot();
set_bit(CACHE_NEGATIVE, &rsci->h.flags);
if (resv->iov_len + 4 > PAGE_SIZE)
goto drop;
Patches currently in stable-queue which might be from bfields@xxxxxxxxxx are
queue-4.9/svcrdma-avoid-duplicate-dma-unmapping-during-error-recovery.patch
queue-4.9/svcrpc-don-t-leak-contexts-on-proc_destroy.patch
queue-4.9/sunrpc-don-t-call-sleeping-functions-from-the-notifier-block-callbacks.patch
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