Date: Sun, 20 Jun 2021 14:18:31 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 256730] linsysfs adds duplicate pathnames Message-ID: <bug-256730-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256730 Bug ID: 256730 Summary: linsysfs adds duplicate pathnames Product: Base System Version: 13.0-STABLE Hardware: arm64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: jfc@mit.edu Created attachment 225948 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D225948&action= =3Dedit dmesg output On my Ampere arm64 server (but not on a Raspberry Pi 3B) I get a panic tryi= ng to load linsysfs with INVARIANTS defined. The panic message is "pfs_add_node(): homonymous siblings". With a debugging printf instead of a panic I see linsysfs_run_bus is trying to add several instances of "0000:00:00.0". # ls /usr/jail/0/linux/sys/devices/pci0000:00 0000:00:00.0 0000:00:00.0 0000:00:00.0 0000:00:00.0 0000:00:00.0 0000:00:00.0 0000:00:00.0 There might be two bugs here -- bad PCI enumeration code for the Ampere ser= ver and a lack of defensive programming in the linsysfs kernel module. I see some warnings from PCI code in attached dmesg output which might be related. --=20 You are receiving this mail because: You are the assignee for the bug.=
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