diff options
| author | Trond Myklebust <[email protected]> | 2024-09-13 17:57:04 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2024-11-10 22:07:08 +0000 |
| commit | ace149e0830c380ddfce7e466fe860ca502fe4ee (patch) | |
| tree | 56dcd5d10190831e96e235d13143bc08de5f0941 /fs/btrfs/compression.c | |
| parent | Merge tag 'irq_urgent_for_v6.12_rc7' of git://git.kernel.org/pub/scm/linux/ke... (diff) | |
| download | kernel-ace149e0830c380ddfce7e466fe860ca502fe4ee.tar.gz kernel-ace149e0830c380ddfce7e466fe860ca502fe4ee.zip | |
filemap: Fix bounds checking in filemap_read()
If the caller supplies an iocb->ki_pos value that is close to the
filesystem upper limit, and an iterator with a count that causes us to
overflow that limit, then filemap_read() enters an infinite loop.
This behaviour was discovered when testing xfstests generic/525 with the
"localio" optimisation for loopback NFS mounts.
Reported-by: Mike Snitzer <[email protected]>
Fixes: c2a9737f45e2 ("vfs,mm: fix a dead loop in truncate_inode_pages_range()")
Tested-by: Mike Snitzer <[email protected]>
Signed-off-by: Trond Myklebust <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'fs/btrfs/compression.c')
0 files changed, 0 insertions, 0 deletions