On Thu, 2018-03-29 at 11:02 +0200, Paolo Valente wrote: > > Il giorno 01 mar 2018, alle ore 02:35, Bart Van Assche <bart.vanassche@xxxxxxx> ha scritto: > > Thank you for having shared your kernel config off-list. After having > > made the following changes to your kernel config I was able to run the > > srp-test software: > > * Enable CONFIG_DM_MULTIPATH_QL, CONFIG_DM_MULTIPATH_ST, > > CONFIG_SCSI_DH_RDAC, CONFIG_SCSI_DH_EMC and CONFIG_SCSI_DH_ALUA. > > * Disable CONFIG_KASAN. Apparently there is an incompatibility between the > > rdma_rxe driver and KASAN. I'm still analyzing this. > > > > Please let me know whether these changes also allow you to run the srp-test > > software and whether you can reproduce what I reported at the start of this > > e-mail thread. > > > > Thanks for these new directives and sorry for my long delay. I've > modified the config as per your suggestions (you can find my new > config attached), and retried. > > Unfortunately, same failure: > $ sudo ./run_tests -c -d -r 10 -t 02-mq -e bfq > Unloaded the ib_srpt kernel module > Unloaded the rdma_rxe kernel module > SoftRoCE network interfaces: rxe0 > Zero-initializing /dev/ram0 ... done > Zero-initializing /dev/ram1 ... done > mkdir: impossibile creare la directory "021c:42ff:fe4c:fac9": Invalid argument > Retrying with old port name format > mkdir: impossibile creare la directory "0xfe80000000000000021c42fffe4cfac9": Invalid argument Hello Paolo, With your kernel config and I/O scheduler "none" srp-test runs reliably on my test setup. The result for the BFQ scheduler is available below. If the srp-test software did not start on your setup I assume that you are using another kernel version? Which kernel version did you use? Thanks, Bart. BUG: unable to handle kernel NULL pointer dereference at 0000000000000200 IP: rb_erase+0x284/0x380 PGD 0 P4D 0 Oops: 0002 [#1] SMP PTI Modules linked in: ib_srp libcrc32c scsi_transport_srp ib_srpt target_core_iblock target_core_mod rdma_cm iw_cm ib_cm scsi_debug brd rdma_rxe ip6_udp_tunnel udp_tunnel ib_umad ib_uverbs ib_core kyber_iosched bfq crct10dif_pclmul crc32_pclmul ghash_clmulni_intel serio_raw virtio_balloon virtio_console multipath virtio_net virtio_blk virtio_scsi ata_generic crc32c_intel virtio_pci virtio_ring virtio pata_acpi [last unloaded: ip6_udp_tunnel] CPU: 3 PID: 28 Comm: ksoftirqd/3 Not tainted 4.16.0-rc7-dbg+ #2 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 RSP: 0000:ffffa5ad0040f908 EFLAGS: 00010206 RAX: ffffde9f81e9b700 RBX: ffff9445775b1380 RCX: 0000000000000000 RDX: ffffde9f81e9b700 RSI: ffff9445652e1380 RDI: ffff9445775b13e0 RBP: ffffa5ad0040f908 R08: 0000000000000200 R09: 0000000000000002 R10: 0000000000000001 R11: ffffffffaf25f020 R12: ffff9445775b13e0 R13: ffff944564376800 R14: ffff944576328000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff94457fd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000200 CR3: 000000006b210001 CR4: 00000000003606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: elv_rb_del+0x24/0x30 bfq_remove_request+0x9a/0x2e0 [bfq] bfq_finish_requeue_request+0x2e1/0x3b0 [bfq] 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+0xfd/0x190 blk_mq_complete_request+0x69/0xa0 dm_complete_request+0x22/0x30 end_clone_request+0x1d/0x20 __blk_mq_end_request+0x5b/0x70 scsi_end_request+0xba/0x220 scsi_io_completion+0x4f1/0x700 ? scsi_dec_host_busy+0xa6/0x130 scsi_finish_command+0xef/0x140 scsi_softirq_done+0x11f/0x170 __blk_mq_complete_request+0xfd/0x190 blk_mq_complete_request+0x69/0xa0 scsi_mq_done+0x34/0x100 srp_recv_done+0x2f6/0xa40 [ib_srp] ? rxe_poll_cq+0x13a/0x150 [rdma_rxe] __ib_process_cq+0x83/0xc0 [ib_core] ib_poll_handler+0x2b/0x80 [ib_core] irq_poll_softirq+0x90/0x140 __do_softirq+0xcf/0x4b1 run_ksoftirqd+0x33/0x50 smpboot_thread_fn+0xfc/0x170 kthread+0x121/0x140 ? sort_range+0x30/0x30 ? kthread_create_worker_on_cpu+0x70/0x70 ret_from_fork+0x3a/0x50 Code: 83 e2 01 0f 85 45 fe ff ff 5d c3 4c 89 0e 4d 85 d2 0f 84 28 fe ff ff 48 83 c8 01 48 89 0a 49 89 02 5d c3 4d 85 c0 4c 89 06 74 9c <49> 89 10 5d c3 48 89 0e 5d c3 4d 89 48 10 eb d3 4d 8b 50 08 4c RIP: rb_erase+0x284/0x380 RSP: ffffa5ad0040f908 CR2: 0000000000000200 ---[ end trace 29e2f703ddaa3232 ]--- Kernel panic - not syncing: Fatal exception in interrupt Kernel Offset: 0x2d000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) ---[ end Kernel panic - not syncing: Fatal exception in interrupt
