Control: found -1 5.19~rc4-1~exp1
Control: forwarded -1 https://lore.kernel.org/bpf/20230118051443.78988-1-alexei.starovoitov@gmail.com/
On Saturday, 25 March 2023 16:00:47 CET Florian Lehner wrote:
Via https://snapshot.debian.org/binary/linux-image-amd64/ you can easily
test various kernel versions. Could you try whether 5.19~rc4-1~exp1
indeed produces the problem?
Yes - I can reproduce the total system freeze with 5.19~rc4-1~exp1
Thanks. Then the most likely case was that it was introduced in
the 5.19 merge window and thus also present in 5.19-rc1, but there isn't a
prebuild kernel to verify.
Since the running program is rather complex, it is not easily possible
to carve out a small reproducer. We can provide gdb backtraces from
freezes inside qemu.
Someone else would have to chime in for the backtraces; that's beyond my
skill set.
I just learned about
https://lore.kernel.org/bpf/20230118051443.78988-1-alexei.starovoitov@gmail.
com/. With the provided patch applied I no longer mange to freeze the
system.
I see you already responded to that thread, excellent :-)
Hopefully they'll read this whole bug report, but mentioning that your actual
problem was NOT triggered till 5.18, but did trigger from 5.19-rc4 and later,
could be useful. I may not fully understand what upstream talked about, but I
only saw a reference to a 6.0.0 kernel.
Thanks for testing and reporting back :-)