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Dominique Martinet
574d356b7a
If the requested msize is too small (either from command line argument or from the server version reply), we won't get any work done. If it's *really* too small, nothing will work, and this got caught by syzbot recently (on a new kmem_cache_create_usercopy() call) Just set a minimum msize to 4k in both code paths, until someone complains they have a use-case for a smaller msize. We need to check in both mount option and server reply individually because the msize for the first version request would be unchecked with just a global check on clnt->msize. Link: http://lkml.kernel.org/r/[email protected] Reported-by: [email protected] Signed-off-by: Dominique Martinet <[email protected]> Cc: Eric Van Hensbergen <[email protected]> Cc: Latchesar Ionkov <[email protected]> Cc: [email protected]