| Message ID | 20240927135118.1432057-1-pulehui@huaweicloud.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Re-adapt "bpf: Fix DEVMAP_HASH overflow check on 32-bit arches" | expand |
On Fri, Sep 27, 2024 at 01:51:15PM +0000, Pu Lehui wrote: > Commit 70294d8bc31f ("bpf: Eliminate rlimit-based memory accounting for > devmap maps") relies on the v5.11+ basic mechanism of memcg-based memory > accounting [0]. The commit cannot be independently backported to the > 5.10 stable branch, otherwise the related memory when creating devmap > will be unrestricted and the associated bpf selftest map_ptr will fail. > Let's roll back to rlimit-based memory accounting mode for devmap and > re-adapt the commit 225da02acdc9 ("bpf: Fix DEVMAP_HASH overflow check > on 32-bit arches") to the 5.10 stable branch. > > Link: https://lore.kernel.org/bpf/20201201215900.3569844-1-guro@fb.com [0] > > Pu Lehui (2): > Revert "bpf: Fix DEVMAP_HASH overflow check on 32-bit arches" > Revert "bpf: Eliminate rlimit-based memory accounting for devmap maps" > > Toke Høiland-Jørgensen (1): > bpf: Fix DEVMAP_HASH overflow check on 32-bit arches > > kernel/bpf/devmap.c | 20 ++++++++++++++++++-- > 1 file changed, 18 insertions(+), 2 deletions(-) > > -- > 2.34.1 > > Now queud up, thanks. greg k-h
Commit 70294d8bc31f ("bpf: Eliminate rlimit-based memory accounting for devmap maps") relies on the v5.11+ basic mechanism of memcg-based memory accounting [0]. The commit cannot be independently backported to the 5.10 stable branch, otherwise the related memory when creating devmap will be unrestricted and the associated bpf selftest map_ptr will fail. Let's roll back to rlimit-based memory accounting mode for devmap and re-adapt the commit 225da02acdc9 ("bpf: Fix DEVMAP_HASH overflow check on 32-bit arches") to the 5.10 stable branch. Link: https://lore.kernel.org/bpf/20201201215900.3569844-1-guro@fb.com [0] Pu Lehui (2): Revert "bpf: Fix DEVMAP_HASH overflow check on 32-bit arches" Revert "bpf: Eliminate rlimit-based memory accounting for devmap maps" Toke Høiland-Jørgensen (1): bpf: Fix DEVMAP_HASH overflow check on 32-bit arches kernel/bpf/devmap.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-)