Hi qianfan, [email protected] wrote on Fri, 21 Jul 2023 08:31:17 +0800:
> 在 2023/7/21 0:39, Miquel Raynal 写道: > > Hello, > > > > [email protected] wrote on Fri, 25 Mar 2022 18:04:46 +0800: > > > >> It's very strange. And I can't detect it's a bug of usb or dlmalloc. > >> > >> 1. Starting u-boot and dhcp via am335x's ethernet(cpsw driver), it's ok. > >> > >> 2. Starting u-boot and dhcp via am335x's usb net, data abort. > >> > >> 3. start fastboot, and CTRL C right now, dhcp via am335x's usb net, it's > >> ok. > > I am sorry to re-open a thread that is one year old but this is > > still an open bug. The BBB is affected. In particular the BBBW > > because there is no Ethernet connector, which makes the Eth-over-USB > > emulation even more important. All U-Boots since 2021 are affected: > > spurious data aborts, usually at the end of network interactions (tftp, > > ping). I could not bisect it because the boot was deeply broken as > > well on a significant range of commits :-/. > > > > On my side I narrowed it down to an env update which fails in malloc as > > well. If I comment the env update, it fails a bit later. It really > > looks like a stack corruption which is either related to the Ethernet > > USB gadget or the USB controller driver itself. Network transfers on > > the BBBW using regular Ethernet does not trigger any error. > > > > I also observe the very strange "fix" mentioned above: starting and > > killing fastboot makes all tftp pass... If anyone has more details to > > share, or perhaps a subsequent thread giving more details, I would > > really like to see this fixed upstream, I suppose I am not the only one > > :-) > Hi: > > Could you please try this two patches? > > http://patchwork.ozlabs.org/project/uboot/patch/[email protected]/ > > http://patchwork.ozlabs.org/project/uboot/patch/[email protected]/ Indeed these patches work. I ended up rewriting one of them to propose a different approach. I also found two other proposals for the same issue which are still pending around. I hope this submission will make it to avoid more time to be spent on this :-) Thanks a lot for the pointers, I've Cc'ed you on the submissions. Kind regards, Miquèl
