Just stepped on it,
Simple nvmf connect triggers it, is this known?
Also, rping client segfaults so librdmacm seems to be broken.
--
[ 16.809498] BUG: unable to handle kernel NULL pointer dereference at
0000000000000008
[ 16.812570] IP: __radix_tree_lookup+0xe/0xf0
[ 16.814172] PGD 0
[ 16.814174] P4D 0
[ 16.815052] Oops: 0000 [#1] SMP
[ 16.815401] Modules linked in: nvme_loop nvme_fabrics nvme_core
nvmet_rdma nvmet rdma_cm iw_cm null_blk mlx5_ib iscsi_target_mod ib_srpt
ib_cm ib_core tcm_loop tcm_fc libfc tcm_qla2xxx qla2xxx
scsi_transport_fc usb_f_tcm tcm_usb_gadget libcomposite udc_core
vhost_scsi vhost target_core_file target_core_iblock target_core_pscsi
target_core_mod configfs kvm_intel kvm irqbypass ppdev crct10dif_pclmul
crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd
glue_helper cryptd input_leds joydev serio_raw i2c_piix4 parport_pc
parport mac_hid sunrpc autofs4 8139too cirrus ttm drm_kms_helper
mlx5_core syscopyarea ptp sysfillrect psmouse sysimgblt fb_sys_fops
pps_core drm floppy 8139cp mii pata_acpi
[ 16.821972] CPU: 0 PID: 3 Comm: kworker/0:0 Not tainted 4.11.0+ #158
[ 16.822656] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 16.823630] Workqueue: ib_cm cm_work_handler [ib_cm]
[ 16.824144] task: ffff8e013d9810c0 task.stack: ffff9afc801a4000
[ 16.824754] RIP: 0010:__radix_tree_lookup+0xe/0xf0
[ 16.825248] RSP: 0018:ffff9afc801a7b48 EFLAGS: 00010246
[ 16.825791] RAX: ffff8e0135d70f80 RBX: ffff8e0137130a00 RCX:
0000000000000000
[ 16.826497] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000000000000
[ 16.827209] RBP: ffff9afc801a7b50 R08: ffff9afc801a7a48 R09:
ffff8e0139b35030
[ 16.827916] R10: 0000000000000000 R11: 0000000000000040 R12:
ffff8e0137130a88
[ 16.828631] R13: ffff8e0137130a88 R14: ffff8e0135786200 R15:
ffff8e0137130c00
[ 16.829317] FS: 0000000000000000(0000) GS:ffff8e013fc00000(0000)
knlGS:0000000000000000
[ 16.830084] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 16.830629] CR2: 0000000000000008 CR3: 000000000fe09000 CR4:
00000000003406f0
[ 16.831278] Call Trace:
[ 16.831511] radix_tree_lookup+0xd/0x10
[ 16.831865] cma_ps_find+0x59/0x70 [rdma_cm]
[ 16.832287] cma_id_from_event+0xe8/0x5a0 [rdma_cm]
[ 16.832734] cma_req_handler+0x49/0x970 [rdma_cm]
[ 16.833166] ? cma_req_handler+0x49/0x970 [rdma_cm]
[ 16.833612] cm_process_work+0x25/0x120 [ib_cm]
[ 16.834026] ? cm_process_work+0x25/0x120 [ib_cm]
[ 16.834455] ? cm_get_bth_pkey.isra.36+0x3a/0xa0 [ib_cm]
[ 16.834938] cm_req_handler+0xad2/0xd30 [ib_cm]
[ 16.835356] cm_work_handler+0x196/0x16fa [ib_cm]
[ 16.835785] ? cm_work_handler+0x196/0x16fa [ib_cm]
[ 16.836263] process_one_work+0x156/0x3f0
[ 16.836631] worker_thread+0x4b/0x410
[ 16.836969] kthread+0x109/0x140
[ 16.837268] ? process_one_work+0x3f0/0x3f0
[ 16.837650] ? kthread_create_on_node+0x40/0x40
[ 16.838070] ret_from_fork+0x2c/0x40
[ 16.838399] Code: ff 45 00 7e 03 e9 64 ff ff ff 4c 89 23 e9 0e ff ff
ff 90 66 2e 0f 1f 84 00 00 00 00 00 55 49 89 ca 41 bb 40 00 00 00 48 89
e5 53 <4c> 8b 47 08 4c 89 c0 83 e0 03 48 83 f8 01 0f 85 a9 00 00 00 4c
--
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