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linux/fs/bcachefs/super-io.c
Gianfranco Trad 2045fc4295 bcachefs: Fix invalid shift in validate_sb_layout() 
Add check on layout->sb_max_size_bits against BCH_SB_LAYOUT_SIZE_BITS_MAX
to prevent UBSAN shift-out-of-bounds in validate_sb_layout().

Reported-by: syzbot+089fad5a3a5e77825426@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=089fad5a3a5e77825426
Fixes: 03ef80b469 ("bcachefs: Ignore unknown mount options")
Tested-by: syzbot+089fad5a3a5e77825426@syzkaller.appspotmail.com
Signed-off-by: Gianfranco Trad <gianf.trad@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-10-24 17:41:43 -04:00

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