[Bug 261850] Ext2 FileSystem: There is a bug in disk data block allocation
Date: Thu, 10 Feb 2022 02:10:07 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261850 Bug ID: 261850 Summary: Ext2 FileSystem: There is a bug in disk data block allocation Product: Base System Version: 13.0-STABLE Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: email@example.com git diff fs/ext2fs/ext2_alloc.c diff --git a/fs/ext2fs/ext2_alloc.c b/fs/ext2fs/ext2_alloc.c index 4c265a1a8..9e05d02de 100644 --- a/fs/ext2fs/ext2_alloc.c +++ b/fs/ext2fs/ext2_alloc.c @@ -1067,7 +1067,7 @@ ext2_alloccg(struct inode *ip, int cg, daddr_t bpref, int size) start = dtogd(fs, bpref) / NBBY; else start = 0; - end = howmany(fs->e2fs_fpg, NBBY) - start; + end = howmany(fs->e2fs_fpg, NBBY); retry: runlen = 0; runstart = 0; In this function, the variable "start" is the starting position where we traverse the block bitmap of a cylinder group , and the variable "end" is the ending position. Therefore, I don't think we should subtract "start" in the process of calculating "end". In fact, I'm not sure if there's something wrong with my understanding. I would be very grateful if someone could help me！ -- You are receiving this mail because: You are the assignee for the bug.