Looks good. Thanks Daniel. For the series: Reviewed-by: Arun Easi <aeasi@xxxxxxxxxxx> Regards, -Arun On Tue, 8 Sep 2020, 1:15am, Daniel Wagner wrote: > External Email > > ---------------------------------------------------------------------- > The first crash we observed is due memory corruption in the srb memory > pool. Unforuntatly, I couldn't find the source of the problem but the > workaround by resetting the cleanup callbacks 'fixes' this problem > (patch #1). I think as intermeditate step this should be merged until > the real cause can be identified. > > The second crash is due a race condition(?) in the firmware. The sts > entries are not updated in time which leads to this crash pattern > which several customers have reported: > > #0 [c00000ffffd1bb80] scsi_dma_unmap at d00000001e4904d4 [scsi_mod] > #1 [c00000ffffd1bbe0] qla2x00_sp_compl at d0000000204803cc [qla2xxx] > #2 [c00000ffffd1bc20] qla24xx_process_response_queue at d0000000204c5810 [qla2xxx] > #3 [c00000ffffd1bd50] qla24xx_msix_rsp_q at d0000000204c8fd8 [qla2xxx] > #4 [c00000ffffd1bde0] __handle_irq_event_percpu at c000000000189510 > #5 [c00000ffffd1bea0] handle_irq_event_percpu at c00000000018978c > #6 [c00000ffffd1bee0] handle_irq_event at c00000000018984c > #7 [c00000ffffd1bf10] handle_fasteoi_irq at c00000000018efc0 > #8 [c00000ffffd1bf40] generic_handle_irq at c000000000187f10 > #9 [c00000ffffd1bf60] __do_irq at c000000000018784 > #10 [c00000ffffd1bf90] call_do_irq at c00000000002caa4 > #11 [c00000ecca417a00] do_IRQ at c000000000018970 > #12 [c00000ecca417a50] restore_check_irq_replay at c00000000000de98 > > From analyzing the crash dump it was clear that > qla24xx_mbx_iocb_entry() calls sp->done (qla2x00_sp_compl) which > crashes because the response is not a mailbox entry, it is a status > entry. Patch #4 changes the process logic for mailbox commands so that > the sp is parsed before calling the correct proccess function. > > > changes since v1: > - addressed review comments by Martin > - patch#1: added dummy warn function > - patch#4: added log entry > > changes since v2: > - added reviewed tags by Martin > - addressed review comments by Arun > - patch#1: add srb pointer to log message > - patch#3: print calling func name in qla2x00_get_sp_from_handle() > - patch#4: dropped comment, reset HBA > > > Daniel Wagner (4): > qla2xxx: Warn if done() or free() are called on an already freed srb > qla2xxx: Simplify return value logic in qla2x00_get_sp_from_handle() > qla2xxx: Log calling function name in qla2x00_get_sp_from_handle() > qla2xxx: Handle incorrect entry_type entries > > drivers/scsi/qla2xxx/qla_init.c | 10 +++++++++ > drivers/scsi/qla2xxx/qla_inline.h | 5 +++++ > drivers/scsi/qla2xxx/qla_isr.c | 47 ++++++++++++++++++++++++++++++--------- > 3 files changed, 51 insertions(+), 11 deletions(-) > >
