search for: jinpu

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[PATCH] virtio_blk: avoid DMA to stack for the sense buffer
2017 Jan 04
2
[PATCH] virtio_blk: avoid DMA to stack for the sense buffer
...including the SG_IO ioctl from userspace will crash the kernel. Note that > this includes running tools like hdparm even when the host does not have > SCSI passthrough enabled. This sounds scary. Could you share how to reproduce it, this should go into stable if it's the case. Thanks, Jinpu > > Signed-off-by: Christoph Hellwig <hch at lst.de> > --- > drivers/block/virtio_blk.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c > index 5545a67..3c3b8f6 100644 > --- a/driv...
[PATCH] virtio_blk: avoid DMA to stack for the sense buffer
2017 Jan 04
2
[PATCH] virtio_blk: avoid DMA to stack for the sense buffer
...including the SG_IO ioctl from userspace will crash the kernel. Note that > this includes running tools like hdparm even when the host does not have > SCSI passthrough enabled. This sounds scary. Could you share how to reproduce it, this should go into stable if it's the case. Thanks, Jinpu > > Signed-off-by: Christoph Hellwig <hch at lst.de> > --- > drivers/block/virtio_blk.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c > index 5545a67..3c3b8f6 100644 > --- a/driv...
[PATCH] virtio_blk: avoid DMA to stack for the sense buffer
2017 Jan 05
1
[PATCH] virtio_blk: avoid DMA to stack for the sense buffer
...it, this should go into stable if >> it's the case. > > Step 1: Build your kernel with CONFIG_VMAP_STACK=y > Step 2: issue a SG_IO ioctl, e.g. sg_inq /dev/vda > Thanks, so it's only relevant to kernel > 4.9, as CONFIG_VMAP_STACK only introduced in 4.9 kernel. Regards, Jinpu
[PATCH] virtio_blk: avoid DMA to stack for the sense buffer
2017 Jan 05
1
[PATCH] virtio_blk: avoid DMA to stack for the sense buffer
...it, this should go into stable if >> it's the case. > > Step 1: Build your kernel with CONFIG_VMAP_STACK=y > Step 2: issue a SG_IO ioctl, e.g. sg_inq /dev/vda > Thanks, so it's only relevant to kernel > 4.9, as CONFIG_VMAP_STACK only introduced in 4.9 kernel. Regards, Jinpu
4.10 and -stable fix for virtio_blk and virtually mapped stacks
2017 Jan 04
4
4.10 and -stable fix for virtio_blk and virtually mapped stacks
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.
4.10 and -stable fix for virtio_blk and virtually mapped stacks
2017 Jan 04
4
4.10 and -stable fix for virtio_blk and virtually mapped stacks
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.
[PATCH 00/24] block, scsi: final compat_ioctl cleanup
2019 Dec 11
3
[PATCH 00/24] block, scsi: final compat_ioctl cleanup
...y at oracle.com Cc: jgross at suse.com Cc: sstabellini at kernel.org Cc: konrad.wilk at oracle.com Cc: roger.pau at citrix.com Cc: bp at alien8.de Cc: davem at davemloft.net Cc: john.garry at huawei.com Cc: brking at us.ibm.com Cc: intel-linux-scu at intel.com Cc: artur.paszkiewicz at intel.com Cc: jinpu.wang at cloud.ionos.com Cc: dgilbert at interlog.com Cc: Kai.Makisara at kolumbus.fi Cc: arnd at arndb.de Cc: damien.lemoal at hgst.com Cc: hare at suse.com Cc: linux-doc at vger.kernel.org Cc: linux-kernel at vger.kernel.org Cc: linux-block at vger.kernel.org Cc: linux-arm-kernel at lists.infradea...