Messages in this thread | | | Subject | Re: [Xen-devel] [PATCH v2] xen-blkfront: fix kernel panic with blkfront_remove() | From | Manjunath Patil <> | Date | Fri, 9 Nov 2018 11:08:56 -0800 |
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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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