rhashtable: Fix sleeping inside RCU critical section in walk_stop

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The commit 963ecbd41a ("rhashtable:
Fix use-after-free in rhashtable_walk_stop") fixed a real bug
but created another one because we may end up sleeping inside an
RCU critical section.

This patch fixes it properly by replacing the mutex with a spin
lock that specifically protects the walker lists.

Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Herbert Xu 2015-03-24 09:53:17 +11:00 • committed by David S. Miller

parent ce046c568c

commit ba7c95ea38

2 changed files with 7 additions and 2 deletions

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2

include/linux/rhashtable.h

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7

lib/rhashtable.c

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