On Tue, Dec 15, 2015 at 09:27:14PM +0800, Ming Lei wrote: > On Tue, Dec 15, 2015 at 9:06 PM, Eryu Guan <guaneryu@xxxxxxxxx> wrote: > > On Tue, Dec 15, 2015 at 08:06:47PM +0800, Ming Lei wrote: > >> On Tue, Dec 15, 2015 at 7:20 PM, Eryu Guan <guaneryu@xxxxxxxxx> wrote: > >> > On Fri, Dec 11, 2015 at 07:53:40PM +0800, Eryu Guan wrote: > >> >> Hi, > >> >> > >> >> I saw this kernel BUG_ON on 4.4-rc4 kernel, and this can be reproduced > >> >> easily on ppc64 host by: > >> > > >> > This is still reproducible with 4.4-rc5 kernel. > >> > >> Could you capture the debug log after appyling the attached patch and > >> the reproduction? > > > > Thanks for looking into this! dmesg shows: > > > > [ 686.217682] bio_split: sectors 0, bio_sectors 128, bi_rw 0 > > Then I guess queue_max_sectors(q) is bad, could you apply the > attached patch(and the last patch) and post the log? [ 301.279018] blk_bio_segment_split: nseg 0, max_secs 64, max segs 2048 [ 301.279023] bv.len 65536, bv.offset 0 [ 301.279026] bio_split: sectors 0, bio_sectors 128, bi_rw 0 If full call trace is needed please let me know. Thanks, Eryu -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
