Thanks for the advice for bisecting! I found the commits causing the
problem:
After bb4fb62a863ea6131bdac77b21faa9444a605c58 (SUNRPC: Add "@len" parameter to
gss_unwrap()) NFS with Kerberos is completely broken:
$ mount -v /nfs/share
mount.nfs: trying text-based options
'sec=krb5p,soft,intr,bg,timeo=100,retrans=2,vers=4.2,addr=xxxx:xxxx:xxxx:1::1,clientaddr=xxxx:xxxx:xxxx:1::dbfb'
mount.nfs: mount(2): Input/output error
mount.nfs: mount system call failed
After c711ec1aa0c8ff7d979d7f12d1d09df46f349d61 (SUNRPC: Fix GSS privacy
computation of auth->au_ralign) mounts work again but the crashes shown
in the previous comments occur.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1886277
Title:
Regression on NFS: unable to handle page fault in mempool_alloc_slab
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