> Il giorno 10 mag 2018, alle ore 18:12, Bart Van Assche <Bart.VanAssche@xxxxxxx> ha scritto: > > On Fri, 2018-05-04 at 22:11 +0200, Paolo Valente wrote: >>> Il giorno 30 mar 2018, alle ore 18:57, Bart Van Assche <bart.vanassche@xxxxxxx> ha scritto: >>> >>> On Fri, 2018-03-30 at 10:23 +0200, Paolo Valente wrote: >>>> Still 4.16-rc1, being that the version for which you reported this >>>> issue in the first place. >>> >>> A vanilla v4.16-rc1 kernel is not sufficient to run the srp-test software >>> since RDMA/CM support for the SRP target driver is missing from that kernel. >>> That's why I asked you to use the for-next branch from my github repository >>> in a previous e-mail. Anyway, since the necessary patches are now in >>> linux-next, the srp-test software can also be run against linux-next. Here >>> are the results that I obtained with label next-20180329 and the kernel >>> config attached to your previous e-mail: >>> >>> # while ./srp-test/run_tests -c -d -r 10 -e bfq; do :; done >>> >>> BUG: unable to handle kernel NULL pointer dereference at 0000000000000200 >>> PGD 0 P4D 0 >>> Oops: 0002 [#1] SMP PTI >>> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014 >>> RIP: 0010:rb_erase+0x284/0x380 >>> Call Trace: >>> <IRQ> >>> elv_rb_del+0x24/0x30 >>> bfq_remove_request+0x9a/0x2e0 [bfq] >>> ? rcu_read_lock_sched_held+0x64/0x70 >>> ? update_load_avg+0x72b/0x760 >>> bfq_finish_requeue_request+0x2e1/0x3b0 [bfq] >>> ? __lock_is_held+0x5a/0xa0 >>> blk_mq_free_request+0x5f/0x1a0 >>> blk_put_request+0x23/0x60 >>> multipath_release_clone+0xe/0x10 >>> dm_softirq_done+0xe3/0x270 >>> __blk_mq_complete_request_remote+0x18/0x20 >>> flush_smp_call_function_queue+0xa1/0x150 >>> generic_smp_call_function_single_interrupt+0x13/0x30 >>> smp_call_function_single_interrupt+0x4d/0x220 >>> call_function_single_interrupt+0xf/0x20 >>> </IRQ> >> >> I suspect my recent fix [1] might fix your failure too. >> >> [1] https://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg1682264.html > > Hello Paolo, > > With patch [1] applied I can't reproduce the aforementioned crash. I will add > my Tested-by. > Great, thanks! Paolo > Thanks, > > Bart. > >
