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| author | Mikulas Patocka <mpatocka@redhat.com> | 2021-05-25 19:17:19 +0200 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2021-05-25 22:19:58 +0200 |
| commit | 7e768532b2396bcb7fbf6f82384b85c0f1d2f197 (patch) | |
| tree | 7397bddfe9ebf6e2f5586e805b00ae0532f67b76 /tools/thermal | |
| parent | dm snapshot: revert "fix a crash when an origin has no snapshots" (diff) | |
| download | linux-7e768532b2396bcb7fbf6f82384b85c0f1d2f197.tar.xz linux-7e768532b2396bcb7fbf6f82384b85c0f1d2f197.zip | |
dm snapshot: properly fix a crash when an origin has no snapshots
If an origin target has no snapshots, o->split_boundary is set to 0.
This causes BUG_ON(sectors <= 0) in block/bio.c:bio_split().
Fix this by initializing chunk_size, and in turn split_boundary, to
rounddown_pow_of_two(UINT_MAX) -- the largest power of two that fits
into "unsigned" type.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'tools/thermal')
0 files changed, 0 insertions, 0 deletions