From: Kees Cook Date: Thu, 5 Jan 2023 23:46:01 +0000 (-0800) Subject: net/i40e: Replace 0-length array with flexible array X-Git-Tag: v6.6.17~5509^2~85^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0d5292bb29661bd8dbaedf0d768f274474f23196;p=platform%2Fkernel%2Flinux-rpi.git net/i40e: Replace 0-length array with flexible array Zero-length arrays are deprecated[1]. Replace struct i40e_lump_tracking's "list" 0-length array with a flexible array. Detected with GCC 13, using -fstrict-flex-arrays=3: In function 'i40e_put_lump', inlined from 'i40e_clear_interrupt_scheme' at drivers/net/ethernet/intel/i40e/i40e_main.c:5145:2: drivers/net/ethernet/intel/i40e/i40e_main.c:278:27: warning: array subscript is outside array bounds of 'u16[0]' {aka 'short unsigned int[]'} [-Warray-bounds=] 278 | pile->list[i] = 0; | ~~~~~~~~~~^~~ drivers/net/ethernet/intel/i40e/i40e.h: In function 'i40e_clear_interrupt_scheme': drivers/net/ethernet/intel/i40e/i40e.h:179:13: note: while referencing 'list' 179 | u16 list[0]; | ^~~~ [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays Cc: Jesse Brandeburg Cc: Tony Nguyen Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: "Gustavo A. R. Silva" Cc: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Reviewed-by: Jiri Pirko Tested-by: Gurucharan G (A Contingent worker at Intel) Signed-off-by: Tony Nguyen --- diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index c13b1e5..60ce4d1 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -177,7 +177,7 @@ enum i40e_interrupt_policy { struct i40e_lump_tracking { u16 num_entries; - u16 list[0]; + u16 list[]; #define I40E_PILE_VALID_BIT 0x8000 #define I40E_IWARP_IRQ_PILE_ID (I40E_PILE_VALID_BIT - 2) };