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Date: Mon, 14 Feb 2022 22:19:18 -0500 From: "Martin K. Petersen" <martin.petersen@...cle.com> To: Kees Cook <keescook@...omium.org>, Michael Cyr <mikecyr@...ux.ibm.com> Cc: "Martin K . Petersen" <martin.petersen@...cle.com>, linux-scsi@...r.kernel.org, Stephen Rothwell <sfr@...b.auug.org.au>, linux-hardening@...r.kernel.org, target-devel@...r.kernel.org, "James E.J. Bottomley" <jejb@...ux.ibm.com>, Tyrel Datwyler <tyreld@...ux.ibm.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH] scsi: ibmvscsis: Silence -Warray-bounds warning On Mon, 7 Feb 2022 22:12:31 -0800, Kees Cook wrote: > Instead of doing a cast to storage that is too small, add a union for > the high 64 bits. Silences the warnings under -Warray-bounds: > > drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c: In function 'ibmvscsis_send_messages': > drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:1934:44: error: array subscript 'struct viosrp_crq[0]' is partly outside array bounds of 'u64[1]' {aka 'long long unsigned int[1]'} [-Werror=array-bounds] > 1934 | crq->valid = VALID_CMD_RESP_EL; > | ^~ > drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:1875:13: note: while referencing 'msg_hi' > 1875 | u64 msg_hi = 0; > | ^~~~~~ > > [...] Applied to 5.18/scsi-queue, thanks! [1/1] scsi: ibmvscsis: Silence -Warray-bounds warning https://git.kernel.org/mkp/scsi/c/03e4383c7ce3 -- Martin K. Petersen Oracle Linux Engineering
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