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authorLinus Torvalds <torvalds@linux-foundation.org>2020-09-18 04:05:29 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-09-18 04:05:29 +0300
commit10b82d5176488acee2820e5a2cf0f2ec5c3488b6 (patch)
tree620cde6d79098cc681715ed69c6fca2e79dbd764 /mm
parent4c0449c906fe4d9631025bc11993009071094a9a (diff)
parentb3b33d3c43bbe0177d70653f4e889c78cc37f097 (diff)
downloadlinux-10b82d5176488acee2820e5a2cf0f2ec5c3488b6.tar.xz
Merge branch 'for-5.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
Pull percpu fix from Dennis Zhou: "This is a fix for the first chunk size calculation where the variable length array incorrectly used the number of longs instead of bytes of longs. This came in as a code fix and not a bug report, so I don't think it was widely problematic. I believe it worked out due to it being memblock memory and alignment requirements working in our favor" * 'for-5.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu: percpu: fix first chunk size calculation for populated bitmap
Diffstat (limited to 'mm')
-rw-r--r--mm/percpu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/percpu.c b/mm/percpu.c
index f4709629e6de..1ed1a349eab8 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1316,7 +1316,7 @@ static struct pcpu_chunk * __init pcpu_alloc_first_chunk(unsigned long tmp_addr,
/* allocate chunk */
alloc_size = sizeof(struct pcpu_chunk) +
- BITS_TO_LONGS(region_size >> PAGE_SHIFT);
+ BITS_TO_LONGS(region_size >> PAGE_SHIFT) * sizeof(unsigned long);
chunk = memblock_alloc(alloc_size, SMP_CACHE_BYTES);
if (!chunk)
panic("%s: Failed to allocate %zu bytes\n", __func__,