Messages in this thread | | | Date | Thu, 26 Aug 2021 08:24:52 +0200 | From | Marc Kleine-Budde <> | Subject | Re: [PATCH v2 2/5] treewide: Replace open-coded flex arrays in unions |
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On 25.08.2021 22:04:55, Kees Cook wrote: > In support of enabling -Warray-bounds and -Wzero-length-bounds and > correctly handling run-time memcpy() bounds checking, replace all > open-coded flexible arrays (i.e. 0-element arrays) in unions with the > flex_array() helper macro. > > This fixes warnings such as: > > fs/hpfs/anode.c: In function 'hpfs_add_sector_to_btree': > fs/hpfs/anode.c:209:27: warning: array subscript 0 is outside the bounds of an interior zero-length array 'struct bplus_internal_node[0]' [-Wzero-length-bounds] > 209 | anode->btree.u.internal[0].down = cpu_to_le32(a); > | ~~~~~~~~~~~~~~~~~~~~~~~^~~ > In file included from fs/hpfs/hpfs_fn.h:26, > from fs/hpfs/anode.c:10: > fs/hpfs/hpfs.h:412:32: note: while referencing 'internal' > 412 | struct bplus_internal_node internal[0]; /* (internal) 2-word entries giving > | ^~~~~~~~ > > drivers/net/can/usb/etas_es58x/es58x_fd.c: In function 'es58x_fd_tx_can_msg': > drivers/net/can/usb/etas_es58x/es58x_fd.c:360:35: warning: array subscript 65535 is outside the bounds of an interior zero-length array 'u8[0]' {aka 'unsigned char[]'} [-Wzero-length-bounds] > 360 | tx_can_msg = (typeof(tx_can_msg))&es58x_fd_urb_cmd->raw_msg[msg_len]; > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > In file included from drivers/net/can/usb/etas_es58x/es58x_core.h:22, > from drivers/net/can/usb/etas_es58x/es58x_fd.c:17: > drivers/net/can/usb/etas_es58x/es58x_fd.h:231:6: note: while referencing 'raw_msg' > 231 | u8 raw_msg[0]; > | ^~~~~~~ > > Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> > Cc: Arnd Bergmann <arnd@arndb.de> > Cc: Ayush Sawal <ayush.sawal@chelsio.com> > Cc: Vinay Kumar Yadav <vinay.yadav@chelsio.com> > Cc: Rohit Maheshwari <rohitm@chelsio.com> > Cc: Herbert Xu <herbert@gondor.apana.org.au> > Cc: "David S. Miller" <davem@davemloft.net> > Cc: Kalle Valo <kvalo@codeaurora.org> > Cc: Jakub Kicinski <kuba@kernel.org> > Cc: Stanislaw Gruszka <stf_xl@wp.pl> > Cc: Luca Coelho <luciano.coelho@intel.com> > Cc: "James E.J. Bottomley" <jejb@linux.ibm.com> > Cc: "Martin K. Petersen" <martin.petersen@oracle.com> > Cc: Alexei Starovoitov <ast@kernel.org> > Cc: Daniel Borkmann <daniel@iogearbox.net> > Cc: Andrii Nakryiko <andrii@kernel.org> > Cc: Martin KaFai Lau <kafai@fb.com> > Cc: Song Liu <songliubraving@fb.com> > Cc: Yonghong Song <yhs@fb.com> > Cc: John Fastabend <john.fastabend@gmail.com> > Cc: KP Singh <kpsingh@kernel.org> > Cc: Johannes Berg <johannes.berg@intel.com> > Cc: Mordechay Goodstein <mordechay.goodstein@intel.com> > Cc: Lee Jones <lee.jones@linaro.org> > Cc: Wolfgang Grandegger <wg@grandegger.com> > Cc: Marc Kleine-Budde <mkl@pengutronix.de> > Cc: Arunachalam Santhanam <arunachalam.santhanam@in.bosch.com> > Cc: Vincent Mailhol <mailhol.vincent@wanadoo.fr> > Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> > Cc: linux-crypto@vger.kernel.org > Cc: ath10k@lists.infradead.org > Cc: linux-wireless@vger.kernel.org > Cc: netdev@vger.kernel.org > Cc: linux-scsi@vger.kernel.org > Cc: linux-can@vger.kernel.org > Cc: bpf@vger.kernel.org > Signed-off-by: Kees Cook <keescook@chromium.org> > --- > drivers/net/can/usb/etas_es58x/es581_4.h | 2 +- > drivers/net/can/usb/etas_es58x/es58x_fd.h | 2 +-
For the can drivers:
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
BTW: Is there opportunity for conversion, too?
| drivers/net/can/peak_canfd/peak_pciefd_main.c:146:32: warning: array of flexible structures
regards, Marc
-- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | [unhandled content-type:application/pgp-signature] | |