From: Nikola Ciprich <extmaillist@linuxbox.cz>
To: KVM list <kvm@vger.kernel.org>
Cc: nikola.ciprich@linuxbox.cz
Subject: kvm-85 sometimes not starting on 2.6.30-rc5
Date: Wed, 13 May 2009 21:22:49 +0200 [thread overview]
Message-ID: <20090513192249.GA5760@nik-comp.linuxbox.cz> (raw)
Hi,
sometimes trying to start kvm on 2.6.30-rc5 (with kvm module v85, userspace v85) fails with:
kvm_create_vm: Interrupted system call
Could not create KVM context
and following backtrace appears in dmesg:
[ 309.546138] BUG: MAX_LOCK_DEPTH too low!
[ 309.549964] turning off the locking correctness validator.
[ 309.549964] Pid: 2833, comm: qemu-kvm Not tainted 2.6.30lb.00_01_PRE08 #1
[ 309.549964] Call Trace:
[ 309.549964] [<ffffffff80269aa9>] __lock_acquire+0x4a9/0xb70
[ 309.549964] [<ffffffff802c54ef>] ? mm_take_all_locks+0x2f/0x130
[ 309.549964] [<ffffffff8026b825>] lock_acquire+0xa5/0x150
[ 309.549964] [<ffffffff802c55ac>] ? mm_take_all_locks+0xec/0x130
[ 309.549964] [<ffffffff80505c96>] _spin_lock_nest_lock+0x36/0x50
[ 309.549964] [<ffffffff802c55ac>] ? mm_take_all_locks+0xec/0x130
[ 309.549964] [<ffffffff802c55ac>] mm_take_all_locks+0xec/0x130
[ 309.549964] [<ffffffff802d43ab>] do_mmu_notifier_register+0x7b/0x1d0
[ 309.549964] [<ffffffff802d451e>] mmu_notifier_register+0xe/0x10
[ 309.549964] [<ffffffffa02a8dd9>] kvm_dev_ioctl+0x189/0x2f0 [kvm]
[ 309.549964] [<ffffffff802f0171>] vfs_ioctl+0x31/0x90
[ 309.549964] [<ffffffff802f03fb>] do_vfs_ioctl+0x22b/0x550
[ 309.549964] [<ffffffff802f07a2>] sys_ioctl+0x82/0xa0
[ 309.549964] [<ffffffff8020b442>] system_call_fastpath+0x16/0x1b
It happened to me when I didn't have storage with kernel mounted.
Further attempts are usually successfull.
BR
nik
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Nikola CIPRICH
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-------------------------------------
next reply other threads:[~2009-05-13 19:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-13 19:22 Nikola Ciprich [this message]
2009-05-17 20:27 ` kvm-85 sometimes not starting on 2.6.30-rc5 Avi Kivity
2009-05-23 17:20 ` Andrea Arcangeli
2009-05-24 9:47 ` Avi Kivity
2009-09-03 8:04 ` Nikola Ciprich
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