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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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6bcbb3174c
This patch drops two incorrect usages of tcm_qla2xxx_free_cmd()
during TMR ABORT within tcm_qla2xxx_handle_data_work() and
tcm_qla2xxx_aborted_task(), which where attempting to dispatch
into workqueue context to do tcm_qla2xxx_complete_free() and
subsequently invoke transport_generic_free_cmd().
This is incorrect because during TMR ABORT target-core will
drop the outstanding se_cmd->cmd_kref references once it has
quiesced the se_cmd via transport_wait_for_tasks(), and in
the case of qla2xxx it should not attempt to do it's own
transport_generic_free_cmd() once the abort has occured.
As reported by Pascal, this was originally manifesting as a
BUG_ON(cmd->cmd_in_wq) in qlt_free_cmd() during TMR ABORT,
with a LIO backend that had sufficently high enough WRITE
latency to trigger a host side TMR ABORT_TASK.
(v2: Drop the qla_tgt_cmd->write_pending_abort_comp changes,
as they will be addressed in a seperate series)
Reported-by: Pascal de Bruijn <p.debruijn@unilogic.nl>
Tested-by: Pascal de Bruijn <p.debruijn@unilogic.nl>
Cc: Pascal de Bruijn <p.debruijn@unilogic.nl>
Reported-by: Lukasz Engel <lukasz.engel@softax.pl>
Cc: Lukasz Engel <lukasz.engel@softax.pl>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Cc: Quinn Tran <quinn.tran@cavium.com>
Cc: <stable@vger.kernel.org> # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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| .. | ||
| Kconfig | ||
| Makefile | ||
| qla_attr.c | ||
| qla_bsg.c | ||
| qla_bsg.h | ||
| qla_dbg.c | ||
| qla_dbg.h | ||
| qla_def.h | ||
| qla_devtbl.h | ||
| qla_dfs.c | ||
| qla_fw.h | ||
| qla_gbl.h | ||
| qla_gs.c | ||
| qla_init.c | ||
| qla_inline.h | ||
| qla_iocb.c | ||
| qla_isr.c | ||
| qla_mbx.c | ||
| qla_mid.c | ||
| qla_mr.c | ||
| qla_mr.h | ||
| qla_nvme.c | ||
| qla_nvme.h | ||
| qla_nx2.c | ||
| qla_nx2.h | ||
| qla_nx.c | ||
| qla_nx.h | ||
| qla_os.c | ||
| qla_settings.h | ||
| qla_sup.c | ||
| qla_target.c | ||
| qla_target.h | ||
| qla_tmpl.c | ||
| qla_tmpl.h | ||
| qla_version.h | ||
| tcm_qla2xxx.c | ||
| tcm_qla2xxx.h | ||