This series fixes all syzbot bugs in the minix filesystem:
KASAN: null-ptr-deref Write in get_block
KASAN: use-after-free Write in get_block
KASAN: use-after-free Read in get_block
WARNING in inc_nlink
KMSAN: uninit-value in get_block
WARNING in drop_nlink
It also fixes the minix filesystem to set s_maxbytes correctly, so that
userspace sees the correct behavior when exceeding the max file size.
Al or Andrew: one of you will need to take these patches, since no one
is maintaining this filesystem.
Eric Biggers (6):
fs/minix: check return value of sb_getblk()
fs/minix: don't allow getting deleted inodes
fs/minix: reject too-large maximum file size
fs/minix: set s_maxbytes correctly
fs/minix: fix block limit check for V1 filesystems
fs/minix: remove expected error message in block_to_path()
fs/minix/inode.c | 42 +++++++++++++++++++++++++++++++++++++----
fs/minix/itree_common.c | 8 +++++++-
fs/minix/itree_v1.c | 12 ++++++------
fs/minix/itree_v2.c | 13 ++++++-------
fs/minix/minix.h | 1 -
5 files changed, 57 insertions(+), 19 deletions(-)
--
2.27.0
