bcachefs: chardev: fix an integer overflow (32 bit only)

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On 32 bit systems, "sizeof(*arg) + replica_entries_bytes" can have an
integer overflow leading to memory corruption.  Use size_add() to
prevent this.

Fixes: b44dd3797034 ("bcachefs: Redo filesystem usage ioctls")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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Dan Carpenter 2023-09-14 17:59:10 +03:00 • committed by Kent Overstreet

parent 301e0237ca

commit 4ba985b84d

1 changed files with 1 additions and 1 deletions

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fs/bcachefs/chardev.c

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