bcachefs: Guard against overflowing LRU_TIME_BITS

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LRUs only have 48 bits for the time field (i.e. LRU order); thus we need
overflow checks and guards.

Reported-by: syzbot+df3bf3f088dcaa728857@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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This commit is contained in:

Kent Overstreet 2024-06-17 10:06:03 -04:00

parent 1ba44217f8

commit cff07e2739

6 changed files with 32 additions and 12 deletions

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22

fs/bcachefs/alloc_background.c

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8

fs/bcachefs/alloc_background.h

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5

fs/bcachefs/bcachefs.h

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3

fs/bcachefs/bcachefs_format.h

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3

fs/bcachefs/lru.h

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3

fs/bcachefs/sb-errors_format.h

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