Dear Bjorn
On Thu, Jan 12, 2023 at 9:08 PM Bjorn Helgaas helgaas@kernel.org wrote:
[+cc sound folks]
On Wed, Dec 28, 2022 at 06:02:48AM -0600, Bjorn Helgaas wrote:
On Wed, Dec 28, 2022 at 08:37:52AM +0000, bugzilla-daemon@kernel.org wrote:
Summary: PCI bridge to bus boot hang at enumeration Kernel Version: 6.1-rc1...
With Kernel 6.1-rc1 the enumeration process stopped working for me, see attachments.
The enumeration works fine with Kernel 6.0 and below.
Same problem still exists with v6.1. and v6.2.-rc1
Thank you very much for your report, Zeno!
v6.0 works, v6.1-rc1 fails. Would you mind booting v6.1-rc1 with the "ignore_loglevel initcall_debug" kernel parameters and taking a photo when it hangs?
How did you conclude that the hang is related to a PCI bridge? I see recent PCI messages in the photo, but it looks like the last message is from NFS, so I'm wondering if I'm missing some context. The v6.0 dmesg shows several other ntfs, fuse, JFS, etc messages before more PCI-related things. Anyway, the "initcall_debug" might help us narrow it down a bit.
Thanks very much for the bisection (complete log at [1])!
The bisection claims the first bad commit is:
833477fce7a1 ("Merge tag 'sound-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound")
with parents:
7e6739b9336e ("Merge tag 'drm-next-2022-10-05' of git://anongit.freedesktop.org/drm/drm") 86a4d29e7554 ("Merge tag 'asoc-v6.1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus")
Both 7e6739b9336e and 86a4d29e7554 tested "good" during the bisection.
There is a minor conflict when merging 86a4d29e7554 into the upstream, but I can't imagine that being resolved incorrectly.
Would you mind turning off CONFIG_SOUND in your .config and testing 833477fce7a1 again? I'm a little skeptical that the hang would be sound-related, but I guess it's a place to start.
Bjorn
Booting without sound into the commit 833477fce7a1 did not help. Same hang.
Best Zeno