github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-27 17:47:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

RDMA/core: Avoid NULL dereference on FRMR bad usage

Browse Source 
In case a driver calls FRMR pop operation without a successful init,
return after triggering a warning to avoid the NULL dereference.

Fixes: ce5df0b891 ("IB/core: Introduce FRMR pools")
Link: https://patch.msgid.link/r/20260610000145.820592-7-michaelgur@nvidia.com
Signed-off-by: Michael Guralnik <michaelgur@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Michael Guralnik 2026-06-10 03:01:42 +03:00 committed by Jason Gunthorpe
parent 41a707d027
commit 3937243095
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/infiniband/core/frmr_pools.c
View File

@ -529,7 +529,9 @@ int ib_frmr_pool_pop(struct ib_device *device, struct ib_mr *mr)
struct ib_frmr_pools *pools = device->frmr_pools;
struct ib_frmr_pool *pool;
WARN_ON_ONCE(!device->frmr_pools);
if (WARN_ON_ONCE(!pools))
return -EINVAL;
pool = ib_frmr_pool_find(pools, &mr->frmr.key);
if (!pool) {
pool = create_frmr_pool(device, &mr->frmr.key);