From: Ruoyu Wang Date: Sat, 6 Jun 2026 04:06:44 +0000 (+0800) Subject: RDMA/bnxt_re: Check debugfs parameter allocation for failure X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2cde8282ff6e28c5e2fa3dbed25f154bd0e1cd7f;p=thirdparty%2Fkernel%2Flinux.git RDMA/bnxt_re: Check debugfs parameter allocation for failure bnxt_re_debugfs_add_pdev() allocates per-file private data for the CC configuration debugfs entries. The loop that initializes those entries uses rdev->cc_config_params immediately, so allocation failure would lead to NULL pointer dereferences while setting up debugfs. Debugfs is best-effort. If the CC configuration private data cannot be allocated just stop. Link: https://patch.msgid.link/r/20260606040644.13-1-ruoyuw560@gmail.com Signed-off-by: Ruoyu Wang Signed-off-by: Jason Gunthorpe --- diff --git a/drivers/infiniband/hw/bnxt_re/debugfs.c b/drivers/infiniband/hw/bnxt_re/debugfs.c index 5fed2cf66be30..143e9bfc6b795 100644 --- a/drivers/infiniband/hw/bnxt_re/debugfs.c +++ b/drivers/infiniband/hw/bnxt_re/debugfs.c @@ -498,6 +498,8 @@ void bnxt_re_debugfs_add_pdev(struct bnxt_re_dev *rdev) bnxt_re_debugfs_add_info(rdev); rdev->cc_config_params = kzalloc_obj(*cc_params); + if (!rdev->cc_config_params) + return; for (i = 0; i < BNXT_RE_CC_PARAM_GEN0; i++) { struct bnxt_re_cc_param *tmp_params = &rdev->cc_config_params->gen0_parms[i];