fs: fix dropping of rcu-walk from force_reval_path

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As J. R. Okajima noted, force_reval_path passes in the same dentry to
d_revalidate as the one in the nameidata structure (other callers pass in a
child), so the locking breaks. This can oops with a chrooted nfs mount, for
example. Similarly there can be other problems with revalidating a dentry
which is already in nameidata of the path walk.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>

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Nick Piggin 2011-01-14 02:36:19 +00:00 • committed by Nick Piggin

parent bb20c18db6

commit 90dbb77ba4

1 changed files with 8 additions and 0 deletions

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fs/namei.c

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