NFSv4/flexfiles: Fix invalid deref in FF_LAYOUT_DEVID_NODE()

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If the attempt to instantiate the mirror's layout DS pointer failed,
then that pointer may hold a value of type ERR_PTR(), so we need
to check that before we dereference it.

Fixes: 65990d1afb ("pNFS/flexfiles: Fix a deadlock on LAYOUTGET")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

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Trond Myklebust 2019-02-26 11:19:46 -05:00

parent 1a3466aed3

commit 108bb4afd3

1 changed files with 19 additions and 13 deletions

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fs/nfs/flexfilelayout/flexfilelayout.h

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