Peter Wang 8f15a7e3c0 scsi: ufs: core: Fix racing issue between ufshcd_mcq_abort() and ISR ... commit 27900d7119 upstream. If command timeout happens and cq complete IRQ is raised at the same time, ufshcd_mcq_abort clears lprb->cmd and a NULL pointer deref happens in the ISR. Error log: ufshcd_abort: Device abort task at tag 18 Unable to handle kernel NULL pointer dereference at virtual address 0000000000000108 pc : [0xffffffe27ef867ac] scsi_dma_unmap+0xc/0x44 lr : [0xffffffe27f1b898c] ufshcd_release_scsi_cmd+0x24/0x114 Fixes: f1304d4420 ("scsi: ufs: mcq: Added ufshcd_mcq_abort()") Cc: stable@vger.kernel.org Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://lore.kernel.org/r/20231106075117.8995-1-peter.wang@mediatek.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-11-28 17:14:59 +00:00
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core	scsi: ufs: core: Fix racing issue between ufshcd_mcq_abort() and ISR	2023-11-28 17:14:59 +00:00
host	scsi: ufs: qcom: Update PHY settings only when scaling to higher gears	2023-11-28 17:14:59 +00:00
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