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| author | Yinghai Lu <yinghai@kernel.org> | 2011-02-17 14:46:37 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2011-02-17 15:03:43 +0100 |
| commit | 2ca230baeb7c61864cab9b53e37a3da28a2ca7e5 (patch) | |
| tree | 961a13fca73f866363f3da26506eb1c4455d9386 /arch/x86/mm/numa_64.c | |
| parent | e23bba604433a202cd301a976454a90ea6b783ef (diff) | |
| download | linux-2ca230baeb7c61864cab9b53e37a3da28a2ca7e5.tar.bz2 | |
x86-64, NUMA: Don't call __pa() with invalid address in numa_reset_distance()
Do not call __pa(numa_distance) if it was not allocated before.
Calling with invalid address triggers VIRTUAL_BUG_ON() in
__phys_addr() if CONFIG_DEBUG_VIRTUAL.
Also reported by Ingo.
http://thread.gmane.org/gmane.linux.kernel/1101306/focus=1101785
- v2: Change to check existing path as tj requested.
- tj: Description update.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/numa_64.c')
| -rw-r--r-- | arch/x86/mm/numa_64.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c index 8ce617735900..1bd6de4aa714 100644 --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -371,11 +371,13 @@ static void __init numa_reset_distance(void) { size_t size; - size = numa_distance_cnt * sizeof(numa_distance[0]); - memblock_x86_free_range(__pa(numa_distance), - __pa(numa_distance) + size); + if (numa_distance_cnt) { + size = numa_distance_cnt * sizeof(numa_distance[0]); + memblock_x86_free_range(__pa(numa_distance), + __pa(numa_distance) + size); + numa_distance_cnt = 0; + } numa_distance = NULL; - numa_distance_cnt = 0; } /* |