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| author | Gustavo A. R. Silva <gustavoars@kernel.org> | 2022-01-20 16:20:43 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-26 14:01:59 +0100 |
| commit | 7643fd78e1467642757224bd9c39b4bce4422e50 (patch) | |
| tree | 7f7bd093b8593df034c4d5d60d5da16afd7a5fa6 /drivers/usb/host | |
| parent | c89686118c786a523eee3ef68ed38330319626d8 (diff) | |
| download | linux-7643fd78e1467642757224bd9c39b4bce4422e50.tar.bz2 | |
usb: host: fotg210: Use struct_size() helper in kzalloc()
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/usb/host/fotg210-hcd.c:4017:20: warning: using sizeof on a flexible structure
Link: https://github.com/KSPP/linux/issues/174
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20220120222043.GA33559@embeddedor
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/fotg210-hcd.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c index 7af17c8e069b..c3fd375b4778 100644 --- a/drivers/usb/host/fotg210-hcd.c +++ b/drivers/usb/host/fotg210-hcd.c @@ -4014,10 +4014,8 @@ static struct fotg210_iso_sched *iso_sched_alloc(unsigned packets, gfp_t mem_flags) { struct fotg210_iso_sched *iso_sched; - int size = sizeof(*iso_sched); - size += packets * sizeof(struct fotg210_iso_packet); - iso_sched = kzalloc(size, mem_flags); + iso_sched = kzalloc(struct_size(iso_sched, packet, packets), mem_flags); if (likely(iso_sched != NULL)) INIT_LIST_HEAD(&iso_sched->td_list); |