bcachefs: Guard against journal seq overflow

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Wraparound is impractical to handle since in various places we use 0 as
a sentinal value - but 64 bits (or 56, because the btree write buffer
steals a few bits) is enough for all practical purposes.

Reported-by: syzbot+73ed43fbe826227bd4e0@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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Kent Overstreet 2024-11-27 21:58:43 -05:00

parent 9963a14da1

commit b3d82c2f27

2 changed files with 12 additions and 0 deletions

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9

fs/bcachefs/journal.c

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3

fs/bcachefs/journal_types.h

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