Hello! On 3/22/21 10:30 PM, Frank Scheiner wrote: > Riccardo Mottola first recognized a problem with 5.10.x kernels on his > Sun T2000 with UltraSPARC T1 (details in [this thread]). I could verify > the problem also on my Sun T1000 and it looks like this specific issue > breaks the mounting of the root FS or maybe mounting file systems at > all. This affects both booting from disk and from network. > (...) > ...as first bad commit. > > ``` > commit 028abd9222df0cf5855dab5014a5ebaf06f90565 > Author: Christoph Hellwig <hch@xxxxxx> > Date: Thu Sep 17 10:22:34 2020 +0200 > > fs: remove compat_sys_mount > > compat_sys_mount is identical to the regular sys_mount now, so > remove it > and use the native version everywhere. > ``` > > [1]: > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=028abd9222df0cf5855dab5014a5ebaf06f90565 Looking at this change, I think it's rather unexpected that this particular change would break the kernel on a specific CPU target. Are you sure that this is the right bad commit? If you found the right commit, then I assume there is something wrong with the syscall handling on UltraSPARC T1. Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaubitz@xxxxxxxxxx `. `' Freie Universitaet Berlin - glaubitz@xxxxxxxxxxxxxxxxxxx `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913