hi guys, with a clang compiled kernel while enabling -fcatch-undefined-behavior one gets a runtime assert in find_revoke_record(), more precisely, in the inlined hash() function. the issue is that one of the expressions is 'hash << (hash_shift - 12)' which is undefined (in C99 at least) when the shift count is negative and it so happens that hash_shift is 8 because JOURNAL_REVOKE_DEFAULT_HASH is defined to be 256. i'm not sure what the right fix would be hence this mail ;). JOURNAL_REVOKE_DEFAULT_HASH could be increased to 4096 (or more) to avoid the negative shift or the shift count should be fixed to become explicitly non-negative. also given the comment above the hash() function, this construct may be used elsewhere as well, i didn't check myself but it might be worth a look. cheers, PaX Team -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
