]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
fs/minix: fix block limit check for V1 filesystems
authorEric Biggers <ebiggers@google.com>
Wed, 12 Aug 2020 01:35:36 +0000 (18:35 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 12 Aug 2020 17:58:00 +0000 (10:58 -0700)
commit0a12c4a8069607247cb8edc3b035a664e636fd9a
tree2365518caad9ba14fd5fdc509a555514b22d8945
parent32ac86efff91a3e4ef8c3d1cadd4559e23c8e73a
fs/minix: fix block limit check for V1 filesystems

The minix filesystem reads its maximum file size from its on-disk
superblock.  This value isn't necessarily a multiple of the block size.
When it's not, the V1 block mapping code doesn't allow mapping the last
possible block.  Commit 6ed6a722f9ab ("minixfs: fix block limit check")
fixed this in the V2 mapping code.  Fix it in the V1 mapping code too.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Qiujun Huang <anenbupt@gmail.com>
Link: http://lkml.kernel.org/r/20200628060846.682158-6-ebiggers@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/minix/itree_v1.c