Description
In the Linux kernel, the following vulnerability has been resolved: zram: do not forget to endio for partial discard requests As reported by Qu Wenruo and Avinesh Kumar, the following getconf PAGESIZE 65536 blkdiscard -p 4k /dev/zram0 takes literally forever to complete. zram doesn't support partial discards and just returns immediately w/o doing any discard work in such cases. The problem is that we forget to endio on our way out, so blkdiscard sleeps forever in submit_bio_wait(). Fix this by jumping to end_bio label, which does bio_endio().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
0120dd6e4e202e19a0e011e486fb2da40a5ea279 to < 2d1f18efccdb8b29552399d024c36b705447e975affected0120dd6e4e202e19a0e011e486fb2da40a5ea279 to < 35d3300f6357cfaa72db2721dc2b345b19bac5dfaffected0120dd6e4e202e19a0e011e486fb2da40a5ea279 to < a02363f71a79b755daa78a70d6b217f9c13c8c85affected0120dd6e4e202e19a0e011e486fb2da40a5ea279 to < 68ce397e8236088fc53b9532d383a722288c8194affected0120dd6e4e202e19a0e011e486fb2da40a5ea279 to < e3668b371329ea036ff022ce8ecc82f8befcf003affected
Linux Linux
Default version status: affected
6.4affected0 to < 6.4unaffected6.6.140 to ≤ 6.6.*unaffected6.12.86 to ≤ 6.12.*unaffected6.18.27 to ≤ 6.18.*unaffected7.0.4 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/2d1f18efccdb8b29552399d024c36b705447e975 ↗
- https://git.kernel.org/stable/c/35d3300f6357cfaa72db2721dc2b345b19bac5df ↗
- https://git.kernel.org/stable/c/a02363f71a79b755daa78a70d6b217f9c13c8c85 ↗
- https://git.kernel.org/stable/c/68ce397e8236088fc53b9532d383a722288c8194 ↗
- https://git.kernel.org/stable/c/e3668b371329ea036ff022ce8ecc82f8befcf003 ↗