IB/qib: Fix DMA api warning with debug kernel
commit 0252f73334f9ef68868e4684200bea3565a4fcee upstream.
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: Alex Estrin <alex.estrin@intel.com>
Tested-by: Don Dutile <ddutile@redhat.com>
Reviewed-by: Don Dutile <ddutile@redhat.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 files changed