AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-19 08:56:49 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity
bdd330f050
linux_dsm_epyc7002/drivers/net/ethernet/apm/xgene
History
Iyappan Subramanian bdd330f050 drivers: net: xgene: fix: Use separate resources 
This patch fixes the following kernel crash during SGMII based 1GbE probe.

	BUG: Bad page state in process swapper/0  pfn:40fe6ad
	page:ffffffbee37a75d8 count:-1 mapcount:0 mapping:          (null) index:0x0
	flags: 0x0()
	page dumped because: nonzero _count
	Modules linked in:
	CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.17.0+ #7
	Call trace:
	[<ffffffc000087fa0>] dump_backtrace+0x0/0x12c
	[<ffffffc0000880dc>] show_stack+0x10/0x1c
	[<ffffffc0004d981c>] dump_stack+0x74/0xc4
	[<ffffffc00012fe70>] bad_page+0xd8/0x128
	[<ffffffc000133000>] get_page_from_freelist+0x4b8/0x640
	[<ffffffc000133260>] __alloc_pages_nodemask+0xd8/0x834
	[<ffffffc0004194f8>] __netdev_alloc_frag+0x124/0x1b8
	[<ffffffc00041bfdc>] __netdev_alloc_skb+0x90/0x10c
	[<ffffffc00039ff30>] xgene_enet_refill_bufpool+0x11c/0x280
	[<ffffffc0003a11a4>] xgene_enet_process_ring+0x168/0x340
	[<ffffffc0003a1498>] xgene_enet_napi+0x1c/0x50
	[<ffffffc00042b454>] net_rx_action+0xc8/0x18c
	[<ffffffc0000b0880>] __do_softirq+0x114/0x24c
	[<ffffffc0000b0c34>] irq_exit+0x94/0xc8
	[<ffffffc0000e68a0>] __handle_domain_irq+0x8c/0xf4
	[<ffffffc000081288>] gic_handle_irq+0x30/0x7c

This was due to hardware resource sharing conflict with the firmware. This
patch fixes this crash by using resources (descriptor ring, prefetch buffer)
that are not shared.

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-04 17:08:42 -05:00
..
Kconfig drivers: net: NET_XGENE should depend on HAS_DMA 2014-09-01 20:33:15 -07:00
Makefile drivers: net: xgene: Add SGMII based 1GbE support 2014-10-14 16:09:21 -04:00
xgene_enet_ethtool.c drivers: net: xgene: Add SGMII based 1GbE ethtool support 2014-10-14 16:09:22 -04:00
xgene_enet_hw.c drivers: net: xgene: Backward compatibility with older firmware 2014-11-04 17:08:42 -05:00
xgene_enet_hw.h drivers: net: xgene: Backward compatibility with older firmware 2014-11-04 17:08:42 -05:00
xgene_enet_main.c drivers: net: xgene: fix: Use separate resources 2014-11-04 17:08:42 -05:00
xgene_enet_main.h drivers: net: xgene: fix: Use separate resources 2014-11-04 17:08:42 -05:00
xgene_enet_sgmac.c drivers: net: xgene: Backward compatibility with older firmware 2014-11-04 17:08:42 -05:00
xgene_enet_sgmac.h drivers: net: xgene: Add SGMII based 1GbE support 2014-10-14 16:09:21 -04:00
xgene_enet_xgmac.c drivers: net: xgene: Backward compatibility with older firmware 2014-11-04 17:08:42 -05:00
xgene_enet_xgmac.h drivers: net: xgene: Add SGMII based 1GbE support 2014-10-14 16:09:21 -04:00