On Thu, 24 Sep 2020 12:45:59 +0200, Hannes Reinecke wrote:
> alua_bus_detach() might be running concurrently with alua_rtpg_work(),
> so we might trip over h->sdev == NULL and call BUG_ON().
> The correct way of handling it would be to not set h->sdev to NULL
> in alua_bus_detach(), and call rcu_synchronize() before the final
> delete to ensure that all concurrent threads have left the critical
> section.
> Then we can get rid of the BUG_ON(), and replace it with a simple
> if condition.
Applied to 5.10/scsi-fixes, thanks!
[1/1] scsi: scsi_dh_alua: Avoid crash during alua_bus_detach()
https://git.kernel.org/mkp/scsi/c/5faf50e9e9fd
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Martin K. Petersen Oracle Linux Engineering
