This is a note to let you know that I've just added the patch titled i40e: Fix sparse error: uninitialized symbol 'ring' to the 5.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: i40e-fix-sparse-error-uninitialized-symbol-ring.patch and it can be found in the queue-5.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From d6d04ee6d2c9bb5084c8f6074195d6aa0024e825 Mon Sep 17 00:00:00 2001 From: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx> Date: Fri, 26 Mar 2021 19:43:41 +0100 Subject: i40e: Fix sparse error: uninitialized symbol 'ring' From: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx> commit d6d04ee6d2c9bb5084c8f6074195d6aa0024e825 upstream. Init pointer with NULL in default switch case statement. Previously the error was produced when compiling against sparse. i40e_debugfs.c:582 i40e_dbg_dump_desc() error: uninitialized symbol 'ring'. Fixes: 44ea803e2fa7 ("i40e: introduce new dump desc XDP command") Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx> Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx> Tested-by: Dave Switzer <david.switzer@xxxxxxxxx> Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/ethernet/intel/i40e/i40e_debugfs.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c +++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c @@ -578,6 +578,9 @@ static void i40e_dbg_dump_desc(int cnt, case RING_TYPE_XDP: ring = kmemdup(vsi->xdp_rings[ring_id], sizeof(*ring), GFP_KERNEL); break; + default: + ring = NULL; + break; } if (!ring) return; Patches currently in stable-queue which might be from arkadiusz.kubalewski@xxxxxxxxx are queue-5.11/i40e-fix-sparse-errors-in-i40e_txrx.c.patch queue-5.11/i40e-fix-sparse-warning-missing-error-code-err.patch queue-5.11/i40e-fix-sparse-error-vsi-netdev-could-be-null.patch queue-5.11/i40e-fix-sparse-error-uninitialized-symbol-ring.patch