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| author | Matthew Sakai <msakai@redhat.com> | 2026-02-11 18:05:55 +0300 |
|---|---|---|
| committer | Mikulas Patocka <mpatocka@redhat.com> | 2026-03-02 18:37:59 +0300 |
| commit | b3929b2cc2a6003b8e301e6540c651e60d24dcb4 (patch) | |
| tree | f0010410843a48a39271986f4372f2bd10d4e950 | |
| parent | 9e809bb1defe9be7fed2e21552c6b03b2694394d (diff) | |
| download | linux-b3929b2cc2a6003b8e301e6540c651e60d24dcb4.tar.xz | |
dm vdo slab-depot: validate old zone count on load
Verify the old zone count has a valid value before using
it to compute slab summary entry offsets.
Signed-off-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
| -rw-r--r-- | drivers/md/dm-vdo/slab-depot.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/dm-vdo/slab-depot.c b/drivers/md/dm-vdo/slab-depot.c index 034ecaa51f48..ad00afc2c168 100644 --- a/drivers/md/dm-vdo/slab-depot.c +++ b/drivers/md/dm-vdo/slab-depot.c @@ -4262,6 +4262,10 @@ int vdo_decode_slab_depot(struct slab_depot_state_2_0 state, struct vdo *vdo, } slab_size_shift = ilog2(slab_size); + if (state.zone_count > MAX_VDO_PHYSICAL_ZONES) + return vdo_log_error_strerror(UDS_CORRUPT_DATA, + "invalid zone count"); + result = vdo_allocate_extended(struct slab_depot, vdo->thread_config.physical_zone_count, struct block_allocator, __func__, &depot); |