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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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8601a99d7c
When enable SMMU, remove HNS driver will cause a WARNING: [ 141.924177] WARNING: CPU: 36 PID: 2708 at drivers/iommu/dma-iommu.c:443 __iommu_dma_unmap+0xc0/0xc8 [ 141.954673] Modules linked in: hns_enet_drv(-) [ 141.963615] CPU: 36 PID: 2708 Comm: rmmod Tainted: G W 5.0.0-rc1-28723-gb729c57de95c-dirty #32 [ 141.983593] Hardware name: Huawei D05/D05, BIOS Hisilicon D05 UEFI Nemo 1.8 RC0 08/31/2017 [ 142.000244] pstate: 60000005 (nZCv daif -PAN -UAO) [ 142.009886] pc : __iommu_dma_unmap+0xc0/0xc8 [ 142.018476] lr : __iommu_dma_unmap+0xc0/0xc8 [ 142.027066] sp : ffff000013533b90 [ 142.033728] x29: ffff000013533b90 x28: ffff8013e6983600 [ 142.044420] x27: 0000000000000000 x26: 0000000000000000 [ 142.055113] x25: 0000000056000000 x24: 0000000000000015 [ 142.065806] x23: 0000000000000028 x22: ffff8013e66eee68 [ 142.076499] x21: ffff8013db919800 x20: 0000ffffefbff000 [ 142.087192] x19: 0000000000001000 x18: 0000000000000007 [ 142.097885] x17: 000000000000000e x16: 0000000000000001 [ 142.108578] x15: 0000000000000019 x14: 363139343a70616d [ 142.119270] x13: 6e75656761705f67 x12: 0000000000000000 [ 142.129963] x11: 00000000ffffffff x10: 0000000000000006 [ 142.140656] x9 : 1346c1aa88093500 x8 : ffff0000114de4e0 [ 142.151349] x7 : 6662666578303d72 x6 : ffff0000105ffec8 [ 142.162042] x5 : 0000000000000000 x4 : 0000000000000000 [ 142.172734] x3 : 00000000ffffffff x2 : ffff0000114de500 [ 142.183427] x1 : 0000000000000000 x0 : 0000000000000035 [ 142.194120] Call trace: [ 142.199030] __iommu_dma_unmap+0xc0/0xc8 [ 142.206920] iommu_dma_unmap_page+0x20/0x28 [ 142.215335] __iommu_unmap_page+0x40/0x60 [ 142.223399] hnae_unmap_buffer+0x110/0x134 [ 142.231639] hnae_free_desc+0x6c/0x10c [ 142.239177] hnae_fini_ring+0x14/0x34 [ 142.246540] hnae_fini_queue+0x2c/0x40 [ 142.254080] hnae_put_handle+0x38/0xcc [ 142.261619] hns_nic_dev_remove+0x54/0xfc [hns_enet_drv] [ 142.272312] platform_drv_remove+0x24/0x64 [ 142.280552] device_release_driver_internal+0x17c/0x20c [ 142.291070] driver_detach+0x4c/0x90 [ 142.298259] bus_remove_driver+0x5c/0xd8 [ 142.306148] driver_unregister+0x2c/0x54 [ 142.314037] platform_driver_unregister+0x10/0x18 [ 142.323505] hns_nic_dev_driver_exit+0x14/0xf0c [hns_enet_drv] [ 142.335248] __arm64_sys_delete_module+0x214/0x25c [ 142.344891] el0_svc_common+0xb0/0x10c [ 142.352430] el0_svc_handler+0x24/0x80 [ 142.359968] el0_svc+0x8/0x7c0 [ 142.366104] ---[ end trace 60ad1cd58e63c407 ]--- The tx ring buffer map when xmit and unmap when xmit done. So in hnae_init_ring() did not map tx ring buffer, but in hnae_fini_ring() have a unmap operation for tx ring buffer, which is already unmapped when xmit done, than cause this WARNING. The hnae_alloc_buffers() is called in hnae_init_ring(), so the hnae_free_buffers() should be in hnae_fini_ring(), not in hnae_free_desc(). In hnae_fini_ring(), adds a check is_rx_ring() as in hnae_init_ring(). When the ring buffer is tx ring, adds a piece of code to ensure that the tx ring is unmap. Signed-off-by: Yonglong Liu <liuyonglong@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| 3com | ||
| 8390 | ||
| adaptec | ||
| aeroflex | ||
| agere | ||
| alacritech | ||
| allwinner | ||
| alteon | ||
| altera | ||
| amazon | ||
| amd | ||
| apm | ||
| apple | ||
| aquantia | ||
| arc | ||
| atheros | ||
| aurora | ||
| broadcom | ||
| brocade | ||
| cadence | ||
| calxeda | ||
| cavium | ||
| chelsio | ||
| cirrus | ||
| cisco | ||
| cortina | ||
| davicom | ||
| dec | ||
| dlink | ||
| emulex | ||
| ezchip | ||
| faraday | ||
| freescale | ||
| fujitsu | ||
| hisilicon | ||
| hp | ||
| huawei | ||
| i825xx | ||
| ibm | ||
| intel | ||
| marvell | ||
| mediatek | ||
| mellanox | ||
| micrel | ||
| microchip | ||
| moxa | ||
| mscc | ||
| myricom | ||
| natsemi | ||
| neterion | ||
| netronome | ||
| ni | ||
| nuvoton | ||
| nvidia | ||
| nxp | ||
| oki-semi | ||
| packetengines | ||
| pasemi | ||
| qlogic | ||
| qualcomm | ||
| rdc | ||
| realtek | ||
| renesas | ||
| rocker | ||
| samsung | ||
| seeq | ||
| sfc | ||
| sgi | ||
| silan | ||
| sis | ||
| smsc | ||
| socionext | ||
| stmicro | ||
| sun | ||
| synopsys | ||
| tehuti | ||
| ti | ||
| toshiba | ||
| tundra | ||
| via | ||
| wiznet | ||
| xilinx | ||
| xircom | ||
| xscale | ||
| dnet.c | ||
| dnet.h | ||
| ec_bhf.c | ||
| ethoc.c | ||
| fealnx.c | ||
| jme.c | ||
| jme.h | ||
| Kconfig | ||
| korina.c | ||
| lantiq_etop.c | ||
| lantiq_xrx200.c | ||
| Makefile | ||
| netx-eth.c | ||