bcachefs: fix buffer overflow in nocow write path

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BCH_REPLICAS_MAX isn't the actual maximum number of pointers in an
extent, it's the maximum number of dirty pointers.

We don't have a real restriction on the number of cached pointers, and
we don't want a fixed size array here anyways - so switch to
DARRAY_PREALLOCATED().

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Reported-and-tested-by: Daniel J Blueman <daniel@quora.org>

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This commit is contained in:

Kent Overstreet 2023-12-30 15:32:05 -05:00

parent 099dc5c29d

commit d9534cc9fc

1 changed files with 41 additions and 41 deletions

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fs/bcachefs/io_write.c

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