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nvme: Add error path for xa_store in nvme_init_effects

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The xa_store() may fail due to memory allocation failure because there
is no guarantee that the index NVME_CSI_NVM is already used. This fix
introduces a new function to handle the error path.

Fixes: cc115cbe12 ("nvme: always initialize known command effects")
Signed-off-by: Keisuke Nishimura <keisuke.nishimura@inria.fr>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Keisuke Nishimura 2024-12-16 16:27:20 +01:00 committed by Keith Busch
parent e4a0a3058d
commit d4a95adeab
1 changed files with 22 additions and 4 deletions
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26
drivers/nvme/host/core.c
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@ -3175,6 +3175,25 @@ static int nvme_init_non_mdts_limits(struct nvme_ctrl *ctrl)
return ret;
}
static int nvme_init_effects_log(struct nvme_ctrl *ctrl,
u8 csi, struct nvme_effects_log **log)
{
struct nvme_effects_log *effects, *old;
effects = kzalloc(sizeof(*effects), GFP_KERNEL);
if (effects)
return -ENOMEM;
old = xa_store(&ctrl->cels, csi, effects, GFP_KERNEL);
if (xa_is_err(old)) {
kfree(effects);
return xa_err(old);
}
*log = effects;
return 0;
}
static void nvme_init_known_nvm_effects(struct nvme_ctrl *ctrl)
{
struct nvme_effects_log *log = ctrl->effects;
@ -3221,10 +3240,9 @@ static int nvme_init_effects(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)
}
if (!ctrl->effects) {
ctrl->effects = kzalloc(sizeof(*ctrl->effects), GFP_KERNEL);
if (!ctrl->effects)
return -ENOMEM;
xa_store(&ctrl->cels, NVME_CSI_NVM, ctrl->effects, GFP_KERNEL);
ret = nvme_init_effects_log(ctrl, NVME_CSI_NVM, &ctrl->effects);
if (ret < 0)
return ret;
}
nvme_init_known_nvm_effects(ctrl);