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MFC: r339999

Description

MFC: r339999
Fix NFS client vnode locking to avoid a crash during forced dismount.

A crash was reported where the crash occurred in nfs_advlock() when the
NFS_ISV4(vp) macro was being executed. This was caused by the vnode
being VI_DOOMED due to a forced dismount in progress.
This patch fixes the problem by locking the vnode before executing the
NFS_ISV4() macro.

PR: 232673

Details

Committed
rmacklemNov 19 2018, 12:49 AM
Parents
rS340589: MFC: r339999
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