[Bug 943107] New: BUG: scheduling while atomic: swapper/1/0/0x00000145 (i586)
http://bugzilla.suse.com/show_bug.cgi?id=943107 Bug ID: 943107 Summary: BUG: scheduling while atomic: swapper/1/0/0x00000145 (i586) Classification: openSUSE Product: openSUSE Factory Version: 201505* Hardware: i586 OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-maintainers@forge.provo.novell.com Reporter: chrubis@suse.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- I've installed Tumbleweed from openSUSE-Tumleweed-NET-i586-Snapshot20150821-Media.iso into KVM with 4CPUs and 2G RAM. The machine fails to boot after the installation and the log is filled with: BUG: scheduling while atomic: swapper/1/0/0x00000145 with the last number increasing by one in each call. sometimes it's interleaved with: rcu_preempt self-deteceted stall on CPU { 1} rcu_preempt kthread starved for 60002 jiffies! Kernel version is 4.1.6-1-desktop and it boots fine when I reduce the number of CPUs to 1. -- You are receiving this mail because: You are on the CC list for the bug.
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Takashi Iwai
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Martin Pluskal
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Cyril Hrubis
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--- Comment #3 from Takashi Iwai
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Cyril Hrubis
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Takashi Iwai
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Cyril Hrubis
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--- Comment #9 from Cyril Hrubis
I've tried with Snapshot20151128 and everything works fine now. Greping for BUG in dmesg showed nothing.
Ah, forget that, that was x86_64 installation. Will try x86 now. -- You are receiving this mail because: You are on the CC list for the bug.
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--- Comment #10 from Cyril Hrubis
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Cyril Hrubis
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Cyril Hrubis
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--- Comment #17 from Cyril Hrubis
I just wonder whether it's an issue rather in QEMU/KVM side. Changing the CPU, e.g. passing "-cpu host" option makes any difference?
Hmm, with -cpu host ("AMD Phenom(tm) 9750 Quad-Core Processor (fam: 10, model: 02, stepping: 03)") the older image (Snapshot20150821 kernel 4.1.6-desktop) works fine. The problem occurs there only with the "AMD QEMU Virtual CPU version 2.4.0 (fam: 06, model: 06, stepping: 03)" And the newer image (Snapshot20151128) with the lockdep kernel 4.3.0-30 fails just the same way even with -cpu host. -- You are receiving this mail because: You are on the CC list for the bug.
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--- Comment #23 from Cyril Hrubis
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Cyril Hrubis
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