tree: https://github.com/ceph/ceph-client.git testing head: e44e41fbcdc053bb569518e84dd0ddb85ecca912 commit: e44e41fbcdc053bb569518e84dd0ddb85ecca912 [10/10] libceph: check string length in ceph_pagelist_encode_string() for safety config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 8.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout e44e41fbcdc053bb569518e84dd0ddb85ecca912 # save the attached .config to linux build tree GCC_VERSION=8.1.0 make.cross ARCH=xtensa All errors (new ones prefixed by >>): In file included from fs/ceph/xattr.c:3: include/linux/ceph/pagelist.h: In function 'ceph_pagelist_encode_string': >> include/linux/ceph/pagelist.h:76:11: error: 'ERANGE' undeclared (first use in this function) return -ERANGE; ^~~~~~ include/linux/ceph/pagelist.h:76:11: note: each undeclared identifier is reported only once for each function it appears in vim +/ERANGE +76 include/linux/ceph/pagelist.h 44 45 extern void ceph_pagelist_set_cursor(struct ceph_pagelist *pl, 46 struct ceph_pagelist_cursor *c); 47 48 extern int ceph_pagelist_truncate(struct ceph_pagelist *pl, 49 struct ceph_pagelist_cursor *c); 50 51 static inline int ceph_pagelist_encode_64(struct ceph_pagelist *pl, u64 v) 52 { 53 __le64 ev = cpu_to_le64(v); 54 return ceph_pagelist_append(pl, &ev, sizeof(ev)); 55 } 56 static inline int ceph_pagelist_encode_32(struct ceph_pagelist *pl, u32 v) 57 { 58 __le32 ev = cpu_to_le32(v); 59 return ceph_pagelist_append(pl, &ev, sizeof(ev)); 60 } 61 static inline int ceph_pagelist_encode_16(struct ceph_pagelist *pl, u16 v) 62 { 63 __le16 ev = cpu_to_le16(v); 64 return ceph_pagelist_append(pl, &ev, sizeof(ev)); 65 } 66 static inline int ceph_pagelist_encode_8(struct ceph_pagelist *pl, u8 v) 67 { 68 return ceph_pagelist_append(pl, &v, 1); 69 } 70 static inline int ceph_pagelist_encode_string(struct ceph_pagelist *pl, 71 char *s, size_t len) 72 { 73 int ret; 74 75 if (len > U32_MAX) > 76 return -ERANGE; 77 ret = ceph_pagelist_encode_32(pl, len); 78 if (ret) 79 return ret; 80 if (len) 81 return ceph_pagelist_append(pl, s, len); 82 return 0; 83 } 84 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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