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When upcalling gssproxy, cache_head.expiry_time is set as a
timeval, not seconds since boot. As such, RPC cache expiry
logic will not clean expired objects created under
auth.rpcsec.context cache.
This has proven to cause kernel memory leaks on field. Using
64 bit variants of getboottime/timespec
Expiration times have worked this way since 2010's c5b29f885afe "sunrpc:
use seconds since boot in expiry cache". The gssproxy code introduced
in 2012 added gss_proxy_save_rsc and introduced the bug. That's a while
for this to lurk, but it required a bit of an extreme case to make it
obvious.
Signed-off-by: Roberto Bergantinos Corpas <rbergant@redhat.com>
Cc: stable@vger.kernel.org
Fixes: 030d794bf498 "SUNRPC: Use gssproxy upcall for server..."
Tested-By: Frank Sorenson <sorenson@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
3d96208c30