diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-17 17:51:40 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-17 17:51:40 -0800 |
| commit | 38f8ccde04a3fa317b51b05e63c3cb57e1641931 (patch) | |
| tree | e7218f09e839531036a37a899d1f025fd944daec /fs/nilfs2/ioctl.c | |
| parent | dbeed98d89ea91ae68ff6dce6060671726292e85 (diff) | |
| parent | 99b9402a36f0799f25feee4465bfa4b8dfa74b4d (diff) | |
Merge tag 'mm-hotfixes-stable-2023-02-17-15-16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"Six hotfixes. Five are cc:stable: four for MM, one for nilfs2.
Also a MAINTAINERS update"
* tag 'mm-hotfixes-stable-2023-02-17-15-16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
nilfs2: fix underflow in second superblock position calculations
hugetlb: check for undefined shift on 32 bit architectures
mm/migrate: fix wrongly apply write bit after mkdirty on sparc64
MAINTAINERS: update FPU EMULATOR web page
mm/MADV_COLLAPSE: set EAGAIN on unexpected page refcount
mm/filemap: fix page end in filemap_get_read_batch
Diffstat (limited to 'fs/nilfs2/ioctl.c')
| -rw-r--r-- | fs/nilfs2/ioctl.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c index 87e1004b606d..b4041d0566a9 100644 --- a/fs/nilfs2/ioctl.c +++ b/fs/nilfs2/ioctl.c @@ -1114,7 +1114,14 @@ static int nilfs_ioctl_set_alloc_range(struct inode *inode, void __user *argp) minseg = range[0] + segbytes - 1; do_div(minseg, segbytes); + + if (range[1] < 4096) + goto out; + maxseg = NILFS_SB2_OFFSET_BYTES(range[1]); + if (maxseg < segbytes) + goto out; + do_div(maxseg, segbytes); maxseg--; |