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Without this fix attempts to do scsi passthrough on virtio_blk will crash the system on virtually mapped stacks, which is something happening during boot with many distros.

Without this fix attempts to do scsi passthrough on virtio_blk will crash the system on virtually mapped stacks, which is something happening during boot with many distros.

...t; #include <linux/blk-mq.h> #include <linux/blk-mq-virtio.h> @@ -56,11 +55,6 @@ struct virtio_blk { }; struct virtblk_req { -#ifdef CONFIG_VIRTIO_BLK_SCSI - struct scsi_request sreq; /* for SCSI passthrough, must be first */ - u8 sense[SCSI_SENSE_BUFFERSIZE]; - struct virtio_scsi_inhdr in_hdr; -#endif struct virtio_blk_outhdr out_hdr; u8 status; struct scatterlist sg[]; @@ -78,80 +72,6 @@ static inline blk_status_t virtblk_result(struct virtblk_req *vbr) } } -/* - * If this is a packet command we need a couple of additional headers. Behind - * the normal outhdr we put...

...>>> > > + struct virtio_crypto_ablkcipher_ctx *ctx, >>> > > + uint32_t alg, const uint8_t *key, >>> > > + unsigned int keylen, >>> > > + int encrypt) >>> > > +{ >>> > > + struct scatterlist outhdr, key_sg, inhdr, *sgs[3]; >>> > > + unsigned int tmp; >>> > > + struct virtio_crypto *vcrypto = ctx->vcrypto; >>> > > + int op = encrypt ? VIRTIO_CRYPTO_OP_ENCRYPT : VIRTIO_CRYPTO_OP_DECRYPT; >>> > > + int err; >>> > > + unsigned int num...

...>>> > > + struct virtio_crypto_ablkcipher_ctx *ctx, >>> > > + uint32_t alg, const uint8_t *key, >>> > > + unsigned int keylen, >>> > > + int encrypt) >>> > > +{ >>> > > + struct scatterlist outhdr, key_sg, inhdr, *sgs[3]; >>> > > + unsigned int tmp; >>> > > + struct virtio_crypto *vcrypto = ctx->vcrypto; >>> > > + int op = encrypt ? VIRTIO_CRYPTO_OP_ENCRYPT : VIRTIO_CRYPTO_OP_DECRYPT; >>> > > + int err; >>> > > + unsigned int num...

Hi all, this series builds on my previous changes in Jens' for-4.11/rq-refactor branch that split out the BLOCK_PC fields from struct request into a new struct scsi_request, and makes support for struct scsi_request and the SCSI passthrough ioctls optional. It is now only enabled by drivers that need it. In addition I've made SCSI passthrough support in the virtio_blk driver an optional

Hi all, this series builds on my previous changes in Jens' for-4.11/rq-refactor branch that split out the BLOCK_PC fields from struct request into a new struct scsi_request, and makes support for struct scsi_request and the SCSI passthrough ioctls optional. It is now only enabled by drivers that need it. In addition I've made SCSI passthrough support in the virtio_blk driver an optional

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...

...s is the first element of the read scatter-gather list. */ struct virtio_blk_outhdr { /* VIRTIO_BLK_T* */ - __u32 type; + __virtio32 type; /* io priority. */ - __u32 ioprio; + __virtio32 ioprio; /* Sector (ie. 512 byte offset) */ - __u64 sector; + __virtio64 sector; }; struct virtio_scsi_inhdr { - __u32 errors; - __u32 data_len; - __u32 sense_len; - __u32 residual; + __virtio32 errors; + __virtio32 data_len; + __virtio32 sense_len; + __virtio32 residual; }; /* And this is the final byte of the write scatter-gather list. */ diff --git a/drivers/block/virtio_blk.c b/drivers/block/virti...