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| author | Rusty Russell <rusty@rustcorp.com.au> | 2014-03-13 04:53:38 +0400 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-05-05 15:38:19 +0400 |
| commit | fa8c40b770e8746d1f2e9737068e54098fc9e8dd (patch) | |
| tree | cbd5c0323bfa647fdd42470228d459571b15509d /drivers/char | |
| parent | fa48decc1df0ec789d7bb2ea737f823f649a3cc3 (diff) | |
| download | linux-fa8c40b770e8746d1f2e9737068e54098fc9e8dd.tar.xz | |
virtio_balloon: don't softlockup on huge balloon changes.
commit 1f74ef0f2d7d692fcd615621e0e734c3e7771413 upstream.
When adding or removing 100G from a balloon:
BUG: soft lockup - CPU#0 stuck for 22s! [vballoon:367]
We have a wait_event_interruptible(), but the condition is always true
(more ballooning to do) so we don't ever sleep. We also have a
wait_event() for the host to ack, but that is also always true as QEMU
is synchronous for balloon operations.
Reported-by: Gopesh Kumar Chaudhary <gopchaud@in.ibm.com>
Cc: stable@kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'drivers/char')
0 files changed, 0 insertions, 0 deletions