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| author | Paul Jackson <pj@sgi.com> | 2006-12-08 02:35:53 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 08:28:37 -0800 |
| commit | b8b50b6519afa9891b753c4fffa89d89e04df66a (patch) | |
| tree | 02aff736f77241445d588817c0ea629e69a0b69a | |
| parent | 01a732eb22dab153732b94962467eaabb1fd3797 (diff) | |
| download | linux-stable-b8b50b6519afa9891b753c4fffa89d89e04df66a.tar.gz linux-stable-b8b50b6519afa9891b753c4fffa89d89e04df66a.tar.bz2 linux-stable-b8b50b6519afa9891b753c4fffa89d89e04df66a.zip | |
[PATCH] mm: fallback_alloc cpuset_zone_allowed irq fix
fallback_alloc() could end up calling cpuset_zone_allowed() with interrupts
disabled (by code in kmem_cache_alloc_node()), but without __GFP_HARDWALL
set, leading to a possible call of a sleeping function with interrupts
disabled.
This results in the BUG report:
BUG: sleeping function called from invalid context at kernel/cpuset.c:1520
in_atomic():0, irqs_disabled():1
Thanks to Paul Menage for catching this one.
Signed-off-by: Paul Jackson <pj@sgi.com>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | mm/slab.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/slab.c b/mm/slab.c index 068cb4503c15..e90b6100a927 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3182,7 +3182,7 @@ retry: for (z = zonelist->zones; *z && !obj; z++) { nid = zone_to_nid(*z); - if (cpuset_zone_allowed(*z, flags) && + if (cpuset_zone_allowed(*z, flags | __GFP_HARDWALL) && cache->nodelists[nid] && cache->nodelists[nid]->free_objects) obj = ____cache_alloc_node(cache, |