* drivers/net/ethernet/freescale/enetc/enetc.h:84:9: warning: conversion from 'long unsigned int' to 'u16' {aka 'short unsigned int'} changes value from '130560' to '65024'
@ 2026-01-04 22:05 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-01-04 22:05 UTC (permalink / raw)
To: Wei Fang; +Cc: oe-kbuild-all, linux-kernel, Jakub Kicinski, Claudiu Manoil
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 54e82e93ca93e49cb4c33988adec5c8cb9d0df31
commit: e59bc32df2e989f034623a580e30a2a72af33b3f net: enetc: correct the value of ENETC_RXB_TRUESIZE
date: 3 months ago
config: powerpc-randconfig-001-20260105 (https://download.01.org/0day-ci/archive/20260105/202601050637.kHEKKOG7-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 12.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260105/202601050637.kHEKKOG7-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601050637.kHEKKOG7-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/net/ethernet/freescale/enetc/enetc.c:4:
drivers/net/ethernet/freescale/enetc/enetc.c: In function 'enetc_build_xdp_buff':
>> drivers/net/ethernet/freescale/enetc/enetc.h:84:9: warning: conversion from 'long unsigned int' to 'u16' {aka 'short unsigned int'} changes value from '130560' to '65024' [-Woverflow]
84 | (SKB_WITH_OVERHEAD(ENETC_RXB_TRUESIZE) - XDP_PACKET_HEADROOM)
| ^
drivers/net/ethernet/freescale/enetc/enetc.c:1876:24: note: in expansion of macro 'ENETC_RXB_DMA_SIZE_XDP'
1876 | size = ENETC_RXB_DMA_SIZE_XDP;
| ^~~~~~~~~~~~~~~~~~~~~~
vim +84 drivers/net/ethernet/freescale/enetc/enetc.h
69797ff888d3db Wei Fang 2024-12-19 77
d4fd0404c1c95b Claudiu Manoil 2019-01-22 78 #define ENETC_RX_MAXFRM_SIZE ENETC_MAC_MAXFRM_SIZE
e59bc32df2e989 Wei Fang 2025-10-16 79 #define ENETC_RXB_TRUESIZE (PAGE_SIZE >> 1)
d4fd0404c1c95b Claudiu Manoil 2019-01-22 80 #define ENETC_RXB_PAD NET_SKB_PAD /* add extra space if needed */
d4fd0404c1c95b Claudiu Manoil 2019-01-22 81 #define ENETC_RXB_DMA_SIZE \
d4fd0404c1c95b Claudiu Manoil 2019-01-22 82 (SKB_WITH_OVERHEAD(ENETC_RXB_TRUESIZE) - ENETC_RXB_PAD)
d1b15102dd16ad Vladimir Oltean 2021-03-31 83 #define ENETC_RXB_DMA_SIZE_XDP \
d1b15102dd16ad Vladimir Oltean 2021-03-31 @84 (SKB_WITH_OVERHEAD(ENETC_RXB_TRUESIZE) - XDP_PACKET_HEADROOM)
d4fd0404c1c95b Claudiu Manoil 2019-01-22 85
:::::: The code at line 84 was first introduced by commit
:::::: d1b15102dd16adc17fd5e4db8a485e6459f98906 net: enetc: add support for XDP_DROP and XDP_PASS
:::::: TO: Vladimir Oltean <vladimir.oltean@nxp.com>
:::::: CC: David S. Miller <davem@davemloft.net>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2026-01-04 22:05 drivers/net/ethernet/freescale/enetc/enetc.h:84:9: warning: conversion from 'long unsigned int' to 'u16' {aka 'short unsigned int'} changes value from '130560' to '65024' kernel test robot
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