• Mike Marciniszyn's avatar
    IB/qib: Fix DMA api warning with debug kernel · 0252f733
    Mike Marciniszyn authored
    The following error occurs in a debug build when running MPI PSM:
    
    [  307.415911] WARNING: CPU: 4 PID: 23867 at lib/dma-debug.c:1158
    check_unmap+0x4ee/0xa20
    [  307.455661] ib_qib 0000:05:00.0: DMA-API: device driver failed to check map
    error[device address=0x00000000df82b000] [size=4096 bytes] [mapped as page]
    [  307.517494] Modules linked in:
    [  307.531584]  ib_isert iscsi_target_mod ib_srpt target_core_mod rpcrdma
    sunrpc ib_srp scsi_transport_srp scsi_tgt ib_iser libiscsi ib_ipoib
    scsi_transport_iscsi rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm
    ib_qib intel_powerclamp coretemp rdmavt intel_rapl iosf_mbi kvm_intel kvm
    irqbypass crc32_pclmul ghash_clmulni_intel ipmi_ssif ib_core aesni_intel sg
    ipmi_si lrw gf128mul dca glue_helper ipmi_devintf iTCO_wdt gpio_ich hpwdt
    iTCO_vendor_support ablk_helper hpilo acpi_power_meter cryptd ipmi_msghandler
    ie31200_edac shpchp pcc_cpufreq lpc_ich pcspkr ip_tables xfs libcrc32c sd_mod
    crc_t10dif crct10dif_generic mgag200 i2c_algo_bit drm_kms_helper syscopyarea
    sysfillrect sysimgblt fb_sys_fops ttm ahci crct10dif_pclmul crct10dif_common
    drm crc32c_intel libahci tg3 libata serio_raw ptp i2c_core
    [  307.846113]  pps_core dm_mirror dm_region_hash dm_log dm_mod
    [  307.866505] CPU: 4 PID: 23867 Comm: mpitests-IMB-MP Kdump: loaded Not
    tainted 3.10.0-862.el7.x86_64.debug #1
    [  307.911178] Hardware name: HP ProLiant DL320e Gen8, BIOS J05 11/09/2013
    [  307.944206] Call Trace:
    [  307.956973]  [<ffffffffbd9e915b>] dump_stack+0x19/0x1b
    [  307.982201]  [<ffffffffbd2a2f58>] __warn+0xd8/0x100
    [  308.005999]  [<ffffffffbd2a2fdf>] warn_slowpath_fmt+0x5f/0x80
    [  308.034260]  [<ffffffffbd5f667e>] check_unmap+0x4ee/0xa20
    [  308.060801]  [<ffffffffbd41acaa>] ? page_add_file_rmap+0x2a/0x1d0
    [  308.090689]  [<ffffffffbd5f6c4d>] debug_dma_unmap_page+0x9d/0xb0
    [  308.120155]  [<ffffffffbd4082e0>] ? might_fault+0xa0/0xb0
    [  308.146656]  [<ffffffffc07761a5>] qib_tid_free.isra.14+0x215/0x2a0 [ib_qib]
    [  308.180739]  [<ffffffffc0776bf4>] qib_write+0x894/0x1280 [ib_qib]
    [  308.210733]  [<ffffffffbd540b00>] ? __inode_security_revalidate+0x70/0x80
    [  308.244837]  [<ffffffffbd53c2b7>] ? security_file_permission+0x27/0xb0
    [  308.266025] qib_ib0.8006: multicast join failed for
    ff12:401b:8006:0000:0000:0000:ffff:ffff, status -22
    [  308.323421]  [<ffffffffbd46f5d3>] vfs_write+0xc3/0x1f0
    [  308.347077]  [<ffffffffbd492a5c>] ? fget_light+0xfc/0x510
    [  308.372533]  [<ffffffffbd47045a>] SyS_write+0x8a/0x100
    [  308.396456]  [<ffffffffbd9ff355>] system_call_fastpath+0x1c/0x21
    
    The code calls a qib_map_page() which has never correctly tested for a
    mapping error.
    
    Fix by testing for pci_dma_mapping_error() in all cases and properly
    handling the failure in the caller.
    
    Additionally, streamline qib_map_page() arguments to satisfy just
    the single caller.
    
    Cc: <stable@vger.kernel.org>
    Reviewed-by: default avatarAlex Estrin <alex.estrin@intel.com>
    Tested-by: default avatarDon Dutile <ddutile@redhat.com>
    Reviewed-by: default avatarDon Dutile <ddutile@redhat.com>
    Signed-off-by: default avatarMike Marciniszyn <mike.marciniszyn@intel.com>
    Signed-off-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
    Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
    0252f733
qib.h 50.2 KB