diff options
| author | Camel Guo <camelg@axis.com> | 2022-01-31 11:38:40 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-02-01 08:21:10 +0300 |
| commit | 7af037c39b600bac2c716dd1228e8ddbe149573f (patch) | |
| tree | 33683f4ad66a4427562c6ef56f8b7526867dc3f3 /drivers/net/macsec.c | |
| parent | 4223f86512877b04c932e7203648b37eec931731 (diff) | |
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: fbf68229ffe7 ("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>
Diffstat (limited to 'drivers/net/macsec.c')
0 files changed, 0 insertions, 0 deletions