Hello all, This is the second try for fixing the regression in the BSG-interface that exists since v4.11 (for more infos see the first series). I separated my other changes from the bug-fix so that it is easier to apply if judged good. I will rebase my cleanups I sent in v1 and send them when I get a bit more time. But the regression-fix is more important, so here's that. I did some more tests on it than on v1, including some heavy parallel I/O on the same blk-queue using both BSG and the normal SCSI-stack at the same time (throwing some intentional bad commands in it too). That seemed to work all well enough - i.e. it didn't crash and got the expected results. I haven't done any external error-inject, but IMO that would be beyond the scope right now. The fix is based on Christoph's idea, I discussed this with him off-list already. I rebased the series on Jens' for-next. Reviews are more than welcome :) Beste Grüße / Best regards, - Benjamin Block Benjamin Block (1): bsg-lib: fix kernel panic resulting from missing allocation of reply-buffer block/bsg-lib.c | 74 +++++++++++++++++++++++++++++-------------------- include/linux/blkdev.h | 1 - include/linux/bsg-lib.h | 2 ++ 3 files changed, 46 insertions(+), 31 deletions(-) -- Linux on z Systems Development / IBM Systems & Technology Group IBM Deutschland Research & Development GmbH Vorsitz. AufsR.: Martina Koederitz / Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: AmtsG Stuttgart, HRB 243294