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| author |   Gustavo A. R. Silva <gustavoars@kernel.org> | 2022-01-25 17:25:25 -0600 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-26 14:16:16 +0100 |
| commit | ee8ed0141d532d662407f70d65111a42fe2addae (patch) | |
| tree | 5e0aa73e7d15082fc870354c5bf5bbd5ea40f6b2 | |
| parent | mei: me: Use dma_set_mask_and_coherent() and simplify code (diff) | |
| download | linux-dev-ee8ed0141d532d662407f70d65111a42fe2addae.tar.xz linux-dev-ee8ed0141d532d662407f70d65111a42fe2addae.zip | |
comedi: das16: Use struct_size() helper in comedi_alloc_spriv()
Make use of the struct_size() helper instead of an open-coded version,
in order to avoid any potential type mistakes or integer overflows that,
in the worst scenario, could lead to heap overflows.
Also, address the following sparse warnings:
drivers/comedi/drivers/das16.c:964:45: warning: using sizeof on a flexible structure
drivers/comedi/drivers/das16.c:998:45: warning: using sizeof on a flexible structure
Link: https://github.com/KSPP/linux/issues/174
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20220125232525.GA80228@embeddedor
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/comedi/drivers/das16.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/comedi/drivers/das16.c b/drivers/comedi/drivers/das16.c index 937a69ce0977..728dc02156c8 100644 --- a/drivers/comedi/drivers/das16.c +++ b/drivers/comedi/drivers/das16.c @@ -961,7 +961,7 @@ static const struct comedi_lrange *das16_ai_range(struct comedi_device *dev, /* allocate single-range range table */ lrange = comedi_alloc_spriv(s, - sizeof(*lrange) + sizeof(*krange)); + struct_size(lrange, range, 1)); if (!lrange) return &range_unknown; @@ -995,7 +995,7 @@ static const struct comedi_lrange *das16_ao_range(struct comedi_device *dev, /* allocate single-range range table */ lrange = comedi_alloc_spriv(s, - sizeof(*lrange) + sizeof(*krange)); + struct_size(lrange, range, 1)); if (!lrange) return &range_unknown; |