[PATCH v2 0/2] zram: fix UAF in zram_bvec_write_partial() and drop dead bio plumbing

[Cunlong Li]

Patch 1 fixes a use-after-free in zram_bvec_write_partial() that
happens on PAGE_SIZE > 4K configurations when a partial write hits a
ZRAM_WB slot.

Patch 2 is a follow-up cleanup that drops the now-unused bio parameter
from zram_bvec_write_partial() and zram_bvec_write(), no functional
change.

Patch 1 is tagged for stable; patch 2 is not.

Signed-off-by: Cunlong Li <shenxiaogll@xxxxxxxxx>
---
Changes in v2:
- Add patch 2: drop the now-unused bio parameter from
  zram_bvec_write_partial() and zram_bvec_write(), per Sergey's
  suggestion on v1.
- Link to v1: https://lore.kernel.org/r/20260527-zram-v1-1-ce1acb2bfaf9@xxxxxxxxx

---
Cunlong Li (2):
      zram: fix use-after-free in zram_bvec_write_partial()
      zram: drop unused bio parameter from write helpers

 drivers/block/zram/zram_drv.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
---
base-commit: e8c2f9fdadee7cbc75134dc463c1e0d856d6e5c7
change-id: 20260526-zram-b01425b7e6c6

Best regards,
-- 
Cunlong Li <shenxiaogll@xxxxxxxxx>