| Message ID | 20230915200552.never.642-kees@kernel.org |
|---|---|
| State | New |
| Headers | show |
| Series | wifi: brcmfmac: firmware: Annotate struct brcmf_fw_request with __counted_by | expand |
On 9/15/23 14:05, Kees Cook wrote: > Prepare for the coming implementation by GCC and Clang of the __counted_by > attribute. Flexible array members annotated with __counted_by can have > their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS > (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family > functions). > > As found with Coccinelle[1], add __counted_by for struct brcmf_fw_request. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Arend van Spriel <aspriel@gmail.com> > Cc: Franky Lin <franky.lin@broadcom.com> > Cc: Hante Meuleman <hante.meuleman@broadcom.com> > Cc: Kalle Valo <kvalo@kernel.org> > Cc: Matthias Brugger <mbrugger@suse.com> > Cc: Hector Martin <marcan@marcan.st> > Cc: "Alvin Šipraga" <alsi@bang-olufsen.dk> > Cc: Hans de Goede <hdegoede@redhat.com> > Cc: linux-wireless@vger.kernel.org > Cc: brcm80211-dev-list.pdl@broadcom.com > Cc: SHA-cyfmac-dev-list@infineon.com > Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Thanks
On 15/09/2023 22:05, Kees Cook wrote: > Prepare for the coming implementation by GCC and Clang of the __counted_by > attribute. Flexible array members annotated with __counted_by can have > their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS > (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family > functions). > > As found with Coccinelle[1], add __counted_by for struct brcmf_fw_request. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Arend van Spriel <aspriel@gmail.com> > Cc: Franky Lin <franky.lin@broadcom.com> > Cc: Hante Meuleman <hante.meuleman@broadcom.com> > Cc: Kalle Valo <kvalo@kernel.org> > Cc: Matthias Brugger <mbrugger@suse.com> > Cc: Hector Martin <marcan@marcan.st> > Cc: "Alvin Šipraga" <alsi@bang-olufsen.dk> > Cc: Hans de Goede <hdegoede@redhat.com> > Cc: linux-wireless@vger.kernel.org > Cc: brcm80211-dev-list.pdl@broadcom.com > Cc: SHA-cyfmac-dev-list@infineon.com > Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Matthias Brugger <mbrugger@suse.com> > --- > drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h > index 1266cbaee072..4002d326fd21 100644 > --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h > +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h > @@ -69,7 +69,7 @@ struct brcmf_fw_request { > u16 bus_nr; > u32 n_items; > const char *board_types[BRCMF_FW_MAX_BOARD_TYPES]; > - struct brcmf_fw_item items[]; > + struct brcmf_fw_item items[] __counted_by(n_items); > }; > > struct brcmf_fw_name {
Kees Cook <keescook@chromium.org> wrote: > Prepare for the coming implementation by GCC and Clang of the __counted_by > attribute. Flexible array members annotated with __counted_by can have > their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS > (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family > functions). > > As found with Coccinelle[1], add __counted_by for struct brcmf_fw_request. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Arend van Spriel <aspriel@gmail.com> > Cc: Franky Lin <franky.lin@broadcom.com> > Cc: Hante Meuleman <hante.meuleman@broadcom.com> > Cc: Kalle Valo <kvalo@kernel.org> > Cc: Matthias Brugger <mbrugger@suse.com> > Cc: Hector Martin <marcan@marcan.st> > Cc: "Alvin Šipraga" <alsi@bang-olufsen.dk> > Cc: Hans de Goede <hdegoede@redhat.com> > Cc: linux-wireless@vger.kernel.org > Cc: brcm80211-dev-list.pdl@broadcom.com > Cc: SHA-cyfmac-dev-list@infineon.com > Signed-off-by: Kees Cook <keescook@chromium.org> > Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> > Reviewed-by: Matthias Brugger <mbrugger@suse.com> Patch applied to wireless-next.git, thanks. 45aec443bbb0 wifi: brcmfmac: firmware: Annotate struct brcmf_fw_request with __counted_by
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h index 1266cbaee072..4002d326fd21 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h @@ -69,7 +69,7 @@ struct brcmf_fw_request { u16 bus_nr; u32 n_items; const char *board_types[BRCMF_FW_MAX_BOARD_TYPES]; - struct brcmf_fw_item items[]; + struct brcmf_fw_item items[] __counted_by(n_items); }; struct brcmf_fw_name {
Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct brcmf_fw_request. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Arend van Spriel <aspriel@gmail.com> Cc: Franky Lin <franky.lin@broadcom.com> Cc: Hante Meuleman <hante.meuleman@broadcom.com> Cc: Kalle Valo <kvalo@kernel.org> Cc: Matthias Brugger <mbrugger@suse.com> Cc: Hector Martin <marcan@marcan.st> Cc: "Alvin Šipraga" <alsi@bang-olufsen.dk> Cc: Hans de Goede <hdegoede@redhat.com> Cc: linux-wireless@vger.kernel.org Cc: brcm80211-dev-list.pdl@broadcom.com Cc: SHA-cyfmac-dev-list@infineon.com Signed-off-by: Kees Cook <keescook@chromium.org> --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)