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SubjectRe: [PATCH v10 2/5] gennvm: Generic NVM manager
Hi Matias,

[auto build test WARNING on block/for-next -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url: https://github.com/0day-ci/linux/commits/Matias-Bj-rling/Support-for-Open-Channel-SSDs/20151014-224617
reproduce:
# apt-get install sparse
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)


vim +109 drivers/lightnvm/gennvm.c

93 {
94 struct nvm_dev *dev = private;
95 struct gen_nvm *gn = dev->mp;
96 sector_t max_pages = dev->total_pages * (dev->sec_size >> 9);
97 u64 elba = slba + nlb;
98 struct gen_lun *lun;
99 struct nvm_block *blk;
100 u64 i;
101 int lun_id;
102
103 if (unlikely(elba > dev->total_pages)) {
104 pr_err("gen_nvm: L2P data from device is out of bounds!\n");
105 return -EINVAL;
106 }
107
108 for (i = 0; i < nlb; i++) {
> 109 u64 pba = le64_to_cpu(entries[i]);
110
111 if (unlikely(pba >= max_pages && pba != U64_MAX)) {
112 pr_err("gen_nvm: L2P data entry is out of bounds!\n");
113 return -EINVAL;
114 }
115
116 /* Address zero is a special one. The first page on a disk is
117 * protected. It often holds internal device boot

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation


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