Camel Guo 7af037c39b net: stmmac: dump gmac4 DMA registers correctly ... Unlike gmac100, gmac1000, gmac4 has 27 DMA registers and they are located at DMA_CHAN_BASE_ADDR (0x1100). In order for ethtool to dump gmac4 DMA registers correctly, this commit checks if a net_device has gmac4 and uses different logic to dump its DMA registers. This fixes the following KASAN warning, which can normally be triggered by a command similar like "ethtool -d eth0": BUG: KASAN: vmalloc-out-of-bounds in dwmac4_dump_dma_regs+0x6d4/0xb30 Write of size 4 at addr ffffffc010177100 by task ethtool/1839 kasan_report+0x200/0x21c __asan_report_store4_noabort+0x34/0x60 dwmac4_dump_dma_regs+0x6d4/0xb30 stmmac_ethtool_gregs+0x110/0x204 ethtool_get_regs+0x200/0x4b0 dev_ethtool+0x1dac/0x3800 dev_ioctl+0x7c0/0xb50 sock_ioctl+0x298/0x6c4 ... Fixes: fbf68229ff ("net: stmmac: unify registers dumps methods") Signed-off-by: Camel Guo <camelg@axis.com> Link: https://lore.kernel.org/r/20220131083841.3346801-1-camel.guo@axis.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2022-01-31 21:21:10 -08:00
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stmmac	net: stmmac: dump gmac4 DMA registers correctly	2022-01-31 21:21:10 -08:00
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00