Hi Jens, James, This is a resend of a patchset to 1) protect blk_get_request __GFP_WAIT callers from dead queues and then 2) convert blk_get_request to return ERR_PTR to distinguish between dead queues and low-memory scenarios. [1] A similar bug report appeared on LKML in June [2], (although I don't see any follow up).
Reproducing the original crash is hit or miss given kernel versions and timing, however the same conditions appear present in latest linus, scsi-next, etc. branches. Previous patchset versions were ack'd by Boaz Harrosh <bharr...@panasas.com> for OSD changes and Jiri Kosina <jkos...@suse.cz> for the pktdvd.c changes. Can this patch go forward for the 3.12 merge, or at least in the hopper for the next release? Regards, [1] http://thread.gmane.org/gmane.linux.scsi/80934 [2] http://thread.gmane.org/gmane.linux.kernel/1502882 Joe Lawrence (2): block,scsi: verify return pointer from blk_get_request block,scsi: convert and handle ERR_PTR from blk_get_request block/blk-core.c | 34 ++++++++++++++--------------- block/bsg.c | 8 +++---- block/scsi_ioctl.c | 13 ++++++++--- drivers/block/paride/pd.c | 2 ++ drivers/block/pktcdvd.c | 2 ++ drivers/block/sx8.c | 2 +- drivers/cdrom/cdrom.c | 4 ++-- drivers/ide/ide-park.c | 2 +- drivers/scsi/device_handler/scsi_dh_alua.c | 2 +- drivers/scsi/device_handler/scsi_dh_emc.c | 2 +- drivers/scsi/device_handler/scsi_dh_hp_sw.c | 4 ++-- drivers/scsi/device_handler/scsi_dh_rdac.c | 2 +- drivers/scsi/osd/osd_initiator.c | 4 ++-- drivers/scsi/osst.c | 2 +- drivers/scsi/scsi_error.c | 2 ++ drivers/scsi/scsi_lib.c | 2 +- drivers/scsi/scsi_tgt_lib.c | 2 +- drivers/scsi/sg.c | 4 ++-- drivers/scsi/st.c | 2 +- drivers/target/target_core_pscsi.c | 4 ++-- 20 files changed, 56 insertions(+), 43 deletions(-) -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
