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viostor: It seems that RhelScsiVerify has an improperly handled boundary condition. #1095

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zjmletang opened this issue May 9, 2024 · 3 comments
Open

viostor: It seems that RhelScsiVerify has an improperly handled boundary condition. #1095

zjmletang opened this issue May 9, 2024 · 3 comments
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@YanVugenfirer @vrozenfe
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@zjmletang
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Describe the bug
In the RhelScsiVerify function, I understand that the case where lba + blocks == adaptExt->lastLBA should be a normal SRB. As shown in the figure below. If I am mistaken, please point it out to me.

image
@zjmletang zjmletang added the Bug Bug label May 9, 2024
@vrozenfe
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vrozenfe commented May 9, 2024

Right, we probably missed this case when applied 67f64d0

Thank you for spotting it out.
The fix is welcome.
Vadim.

@MaxXor
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MaxXor commented May 9, 2024

Other location I found it seems to be correct:

kvm-guest-drivers-windows/viostor/virtio_stor.c

Line 1333 in 657ad7e

if ((lba + blocks) > adaptExt->lastLBA) {

@zjmletang
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Right, we probably missed this case when applied 67f64d0

Thank you for spotting it out. The fix is welcome. Vadim.
@vrozenfe
ok, I submit a patch to fix it
JianMing

zjmletang added a commit to zjmletang/kvm-guest-drivers-windows that referenced this issue May 10, 2024
@zjmletang
[viostor] fix incorrect IO boundary handling in RhelScsiVerify
57665b3 
Signed-off-by: Zhang JianMing zhangjianming.zjm@alibaba-inc.com

for the problem description
please visit virtio-win#1095
@zjmletang zjmletang mentioned this issue May 10, 2024
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YanVugenfirer pushed a commit that referenced this issue May 27, 2024
@zjmletang @YanVugenfirer
[viostor] fix incorrect IO boundary handling in RhelScsiVerify
4a38831 
Signed-off-by: Zhang JianMing zhangjianming.zjm@alibaba-inc.com

for the problem description
please visit #1095
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@YanVugenfirer @vrozenfe @MaxXor @zjmletang