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Re: [Qemu-devel] [Qemu-block] [PATCH] Fix Guest VM crash due to iSCSI Se
From: |
John Snow |
Subject: |
Re: [Qemu-devel] [Qemu-block] [PATCH] Fix Guest VM crash due to iSCSI Sense Key error |
Date: |
Fri, 12 Jul 2019 12:44:54 -0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 |
On 7/11/19 8:24 AM, Stefan Hajnoczi wrote:
> On Sun, Jul 07, 2019 at 07:55:03PM -0700, address@hidden wrote:
>
> Reviewed-by: Stefan Hajnoczi <address@hidden>
>
> CCing John Snow, IDE maintainer.
>
> You can use scripts/get_maintainer.pl -f hw/ide/core.c to find out who
> to send patches to.
>
> Stefan
>
ACK, I'll investigate this for the next rc.
--js
>> From: Shaju Abraham <address@hidden>
>>
>> During the IDE DMA transfer for a ISCSI target,when libiscsi encounters
>> a SENSE KEY error, it sets the task->sense to the value "COMMAND ABORTED".
>> The function iscsi_translate_sense() later translaters this error to
>> -ECANCELED
>> and this value is passed to the callback function. In the case of IDE DMA
>> read
>> or write, the callback function returns immediately if the value of the ret
>> argument is -ECANCELED.
>> Later when ide_cancel_dma_sync() function is invoked the assertion
>> "s->bus->dma->aiocb == ((void *)0)" fails and the qemu process gets
>> terminated.
>> Fix the issue by making the value of s->bus->dma->aiocb = NULL when
>> -ECANCELED is passed to the callback.
>>
>> Signed-off-by: Shaju Abraham <address@hidden>
>> ---
>> hw/ide/core.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/hw/ide/core.c b/hw/ide/core.c
>> index 6afadf8..78ea357 100644
>> --- a/hw/ide/core.c
>> +++ b/hw/ide/core.c
>> @@ -841,6 +841,7 @@ static void ide_dma_cb(void *opaque, int ret)
>> bool stay_active = false;
>>
>> if (ret == -ECANCELED) {
>> + s->bus->dma->aiocb = NULL;
>> return;
>> }
>>
>> --
>> 1.9.4
>>
>>
--
—js
- [Qemu-devel] [PATCH] Fix Guest VM crash due to iSCSI Sense Key error, shaju . abraham, 2019/07/08
- Re: [Qemu-devel] [Qemu-block] [PATCH] Fix Guest VM crash due to iSCSI Sense Key error, Stefan Hajnoczi, 2019/07/12
- Re: [Qemu-devel] [Qemu-block] [PATCH] Fix Guest VM crash due to iSCSI Sense Key error,
John Snow <=
- Re: [Qemu-devel] [PATCH] Fix Guest VM crash due to iSCSI Sense Key error, John Snow, 2019/07/25
- Re: [Qemu-devel] [PATCH] Fix Guest VM crash due to iSCSI Sense Key error, John Snow, 2019/07/26
- Re: [Qemu-devel] [PATCH] Fix Guest VM crash due to iSCSI Sense Key error, Stefan Hajnoczi, 2019/07/29
- Re: [Qemu-devel] [PATCH] Fix Guest VM crash due to iSCSI Sense Key error, John Snow, 2019/07/29
- Re: [Qemu-devel] [PATCH] Fix Guest VM crash due to iSCSI Sense Key error, Paolo Bonzini, 2019/07/29
- Re: [Qemu-devel] [PATCH] Fix Guest VM crash due to iSCSI Sense Key error, John Snow, 2019/07/29
- Re: [Qemu-devel] [PATCH] Fix Guest VM crash due to iSCSI Sense Key error, Paolo Bonzini, 2019/07/29