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| author | Mikulas Patocka <mpatocka@redhat.com> | 2023-01-22 22:03:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-10 11:34:23 +0300 |
| commit | 70a135c6d1e03c0e904497e86dec8b2041d8abeb (patch) | |
| tree | a1ac360f05bb1b79757c5807061749eaa0f4e8c6 /drivers | |
| parent | be360c83f2d810493c04f999d69ec9152981e0c0 (diff) | |
| download | linux-70a135c6d1e03c0e904497e86dec8b2041d8abeb.tar.xz | |
dm flakey: fix a bug with 32-bit highmem systems
commit 8eb29c4fbf9661e6bd4dd86197a37ffe0ecc9d50 upstream.
The function page_address does not work with 32-bit systems with high
memory. Use bvec_kmap_local/kunmap_local instead.
Cc: stable@vger.kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reviewed-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/dm-flakey.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c index 805a70abe437..335684a1aeaa 100644 --- a/drivers/md/dm-flakey.c +++ b/drivers/md/dm-flakey.c @@ -307,8 +307,9 @@ static void corrupt_bio_data(struct bio *bio, struct flakey_c *fc) struct page *page = bio_iter_page(bio, iter); if (unlikely(page == ZERO_PAGE(0))) break; - segment = (page_address(page) + bio_iter_offset(bio, iter)); + segment = bvec_kmap_local(&bvec); segment[corrupt_bio_byte] = fc->corrupt_bio_value; + kunmap_local(segment); DMDEBUG("Corrupting data bio=%p by writing %u to byte %u " "(rw=%c bi_opf=%u bi_sector=%llu size=%u)\n", bio, fc->corrupt_bio_value, fc->corrupt_bio_byte, |