From: Niklas Cassel Date: Fri, 26 Mar 2021 19:48:00 +0000 (+0000) Subject: nvme: disallow passthru cmd from targeting a nsid != nsid of the block dev X-Git-Tag: v5.13-rc1~116^2~65^2~2 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=c881a23fb6f7eb901155d25ba8dd1af0b8c7923b;p=tomoyo%2Ftomoyo-test1.git nvme: disallow passthru cmd from targeting a nsid != nsid of the block dev When a passthru command targets a specific namespace, the ns parameter to nvme_user_cmd()/nvme_user_cmd64() is set. However, there is currently no validation that the nsid specified in the passthru command targets the namespace/nsid represented by the block device that the ioctl was performed on. Add a check that validates that the nsid in the passthru command matches that of the supplied namespace. Signed-off-by: Niklas Cassel Reviewed-by: Javier González Reviewed-by: Sagi Grimberg Reviewed-by: Kanchan Joshi Signed-off-by: Christoph Hellwig --- diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 11fca6459812..3f3b985c9fa6 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1632,6 +1632,12 @@ static int nvme_user_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns, return -EFAULT; if (cmd.flags) return -EINVAL; + if (ns && cmd.nsid != ns->head->ns_id) { + dev_err(ctrl->device, + "%s: nsid (%u) in cmd does not match nsid (%u) of namespace\n", + current->comm, cmd.nsid, ns->head->ns_id); + return -EINVAL; + } memset(&c, 0, sizeof(c)); c.common.opcode = cmd.opcode; @@ -1676,6 +1682,12 @@ static int nvme_user_cmd64(struct nvme_ctrl *ctrl, struct nvme_ns *ns, return -EFAULT; if (cmd.flags) return -EINVAL; + if (ns && cmd.nsid != ns->head->ns_id) { + dev_err(ctrl->device, + "%s: nsid (%u) in cmd does not match nsid (%u) of namespace\n", + current->comm, cmd.nsid, ns->head->ns_id); + return -EINVAL; + } memset(&c, 0, sizeof(c)); c.common.opcode = cmd.opcode;