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SubjectRe: [Xen-devel] [PATCH v2] xen-blkfront: fix kernel panic with blkfront_remove()
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oops! sorry for not noticing this.

-Manjunath

On 11/8/2018 10:16 PM, Juergen Gross wrote:
> On 09/11/2018 02:10, Manjunath Patil wrote:
>> When we try to detach the device, blkfront_remove() tries to access
>> blkfront_info leading to kernel panic.
>>
>> Typical call stack involving panic -
>> #10 page_fault at ffffffff816f25df
>> [exception RIP: blkif_free+46]
>> #11 blkfront_remove at ffffffffa004de47 [xen_blkfront]
>> #12 xenbus_dev_remove at ffffffff813faa4c
>> #13 __device_release_driver at ffffffff814769aa
>> #14 device_release_driver at ffffffff81476a63
>> #15 bus_remove_device at ffffffff814762eb
>> #16 device_del at ffffffff81472684
>> #17 device_unregister at ffffffff814727e2
>> #18 xenbus_dev_changed at ffffffff813fa89f
>> #19 frontend_changed at ffffffff813fca19
>> #20 xenwatch_thread at ffffffff813f88f9
>> #21 kthread at ffffffff810a486b
>> #22 ret_from_fork at ffffffff816ed2a8
>>
>> Cc: stable@vger.kernel.org
>> Signed-off-by: Manjunath Patil <manjunath.b.patil@oracle.com>
> Commit f92898e7f32e3 already added that.
>
>
> Juergen

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