Suraj Gupta 5ccdcdf186 net: xilinx: axienet: Enqueue Tx packets in dql before dmaengine starts ... Enqueue packets in dql after dma engine starts causes race condition. Tx transfer starts once dma engine is started and may execute dql dequeue in completion before it gets queued. It results in following kernel crash while running iperf stress test: kernel BUG at lib/dynamic_queue_limits.c:99! <snip> Internal error: Oops - BUG: 00000000f2000800 [#1] SMP pc : dql_completed+0x238/0x248 lr : dql_completed+0x3c/0x248 Call trace: dql_completed+0x238/0x248 axienet_dma_tx_cb+0xa0/0x170 xilinx_dma_do_tasklet+0xdc/0x290 tasklet_action_common+0xf8/0x11c tasklet_action+0x30/0x3c handle_softirqs+0xf8/0x230 <snip> Start dmaengine after enqueue in dql fixes the crash. Fixes: 6a91b846af ("net: axienet: Introduce dmaengine support") Signed-off-by: Suraj Gupta <suraj.gupta2@amd.com> Link: https://patch.msgid.link/20241030062533.2527042-2-suraj.gupta2@amd.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2024-11-03 14:35:11 -08:00
..
Kconfig	net: axienet: Introduce dmaengine support	2023-11-20 17:52:22 -08:00
ll_temac_main.c	net: ll_temac: platform_get_resource replaced by wrong function	2024-03-25 19:46:56 -07:00
ll_temac_mdio.c	net: Explicitly include correct DT includes	2023-07-27 20:33:16 -07:00
ll_temac.h	net: Explicitly include correct DT includes	2023-07-27 20:33:16 -07:00
Makefile
xilinx_axienet_main.c	net: xilinx: axienet: Enqueue Tx packets in dql before dmaengine starts	2024-11-03 14:35:11 -08:00
xilinx_axienet_mdio.c	net: axienet: Fix kernel doc warnings	2024-03-29 12:41:22 -07:00
xilinx_axienet.h	net: xilinx: axienet: Remove unused checksum variables	2024-09-10 18:34:50 -07:00
xilinx_emaclite.c	net: emaclite: Use devm_platform_get_and_ioremap_resource() in xemaclite_of_probe()	2024-02-09 12:27:43 -08:00