From: Honggang Li Date: Mon, 23 May 2016 00:32:09 +0000 (+0800) Subject: RDMA/cxgb3: device driver frees DMA memory with different size X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0de4cbb3dddca35ecd06b95918f38439c9c6401f;p=linux-beck.git RDMA/cxgb3: device driver frees DMA memory with different size [ 598.852037] ------------[ cut here ]------------ [ 598.856698] WARNING: at lib/dma-debug.c:887 check_unmap+0xf8/0x920() [ 598.863079] cxgb3 0000:01:00.0: DMA-API: device driver frees DMA memory with different size [device address=0x0000000003310000] [map size=17 bytes] [unmap size=16 bytes] [ 598.878265] Modules linked in: xprtrdma ib_isert iscsi_target_mod ib_iser libiscsi scsi_transport_iscsi ib_srpt target_core_mod ib_srp scsi_transport_srp scsi_tgt ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_sa ib_mad kvm_amd kvm ipmi_devintf ipmi_ssif dcdbas pcspkr ipmi_si sg ipmi_msghandler acpi_power_meter amd64_edac_mod shpchp edac_core sp5100_tco k10temp edac_mce_amd i2c_piix4 acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic crct10dif_common ata_generic iw_cxgb3 pata_acpi ib_core ib_addr mgag200 syscopyarea sysfillrect sysimgblt i2c_algo_bit drm_kms_helper ttm pata_atiixp drm ahci libahci serio_raw i2c_core cxgb3 libata bnx2 mdio dm_mirror dm_region_hash dm_log dm_mod [ 598.946822] CPU: 3 PID: 11820 Comm: cmtime Not tainted 3.10.0-327.el7.x86_64.debug #1 [ 598.954681] Hardware name: Dell Inc. PowerEdge R415/0GXH08, BIOS 2.0.2 10/22/2012 [ 598.962193] ffff8808077479a8 000000000381a432 ffff880807747960 ffffffff81700918 [ 598.969663] ffff880807747998 ffffffff8108b6c0 ffff880807747a80 ffff8808063f55c0 [ 598.977132] ffffffff833ca850 0000000000000282 ffff88080b1bb800 ffff880807747a00 [ 598.984602] Call Trace: [ 598.987062] [] dump_stack+0x19/0x1b [ 598.992224] [] warn_slowpath_common+0x70/0xb0 [ 598.998254] [] warn_slowpath_fmt+0x5c/0x80 [ 599.004033] [] check_unmap+0xf8/0x920 [ 599.009369] [] ? sched_clock+0x9/0x10 [ 599.014702] [] debug_dma_free_coherent+0x7e/0xa0 [ 599.021008] [] cxio_destroy_cq+0xcc/0x160 [iw_cxgb3] [ 599.027654] [] iwch_destroy_cq+0xf0/0x140 [iw_cxgb3] [ 599.034307] [] ib_destroy_cq+0x1e/0x30 [ib_core] [ 599.040601] [] ib_uverbs_close+0x302/0x4d0 [ib_uverbs] [ 599.047417] [] __fput+0x102/0x310 [ 599.052401] [] ____fput+0xe/0x10 [ 599.057297] [] task_work_run+0xb4/0xe0 [ 599.062719] [] do_exit+0x304/0xc60 [ 599.067789] [] ? native_sched_clock+0x35/0x80 [ 599.073820] [] ? sched_clock+0x9/0x10 [ 599.079153] [] ? _raw_spin_unlock_irq+0x2c/0x50 [ 599.085358] [] do_group_exit+0x4c/0xc0 [ 599.090779] [] get_signal_to_deliver+0x2e1/0x960 [ 599.097071] [] do_signal+0x57/0x6e0 [ 599.102229] [] ? sysret_signal+0x5/0x4e [ 599.107738] [] do_notify_resume+0x5f/0xb0 [ 599.113418] [] int_signal+0x12/0x17 [ 599.118576] ---[ end trace 1e4653102e7e7019 ]--- [ 599.123211] Mapped at: [ 599.125577] [] debug_dma_alloc_coherent+0x2b/0x80 [ 599.131968] [] cxio_create_cq+0xf2/0x1f0 [iw_cxgb3] [ 599.139920] [] iwch_create_cq+0x105/0x4e0 [iw_cxgb3] [ 599.147895] [] create_cq.constprop.14+0x184/0x2e0 [ib_uverbs] [ 599.156649] [] ib_uverbs_create_cq+0x10b/0x140 [ib_uverbs] Fixes: b955150ea784 ('RDMA/cxgb3: When a user QP is marked in error, also mark the CQs in error') Signed-off-by: Honggang Li Reviewed-by: Leon Romanovsky Reviewed-by: Steve Wise Signed-off-by: Doug Ledford --- diff --git a/drivers/infiniband/hw/cxgb3/cxio_hal.c b/drivers/infiniband/hw/cxgb3/cxio_hal.c index de1c61b417d6..ada2e5009c86 100644 --- a/drivers/infiniband/hw/cxgb3/cxio_hal.c +++ b/drivers/infiniband/hw/cxgb3/cxio_hal.c @@ -327,7 +327,7 @@ int cxio_destroy_cq(struct cxio_rdev *rdev_p, struct t3_cq *cq) kfree(cq->sw_queue); dma_free_coherent(&(rdev_p->rnic_info.pdev->dev), (1UL << (cq->size_log2)) - * sizeof(struct t3_cqe), cq->queue, + * sizeof(struct t3_cqe) + 1, cq->queue, dma_unmap_addr(cq, mapping)); cxio_hal_put_cqid(rdev_p->rscp, cq->cqid); return err;