Revision 1fb9341ac34825aa40354e74d9a2c69df7d2c304 authored by Rusty Russell on 12 January 2013, 02:57:34 UTC, committed by Rusty Russell on 12 January 2013, 02:57:46 UTC
Prarit's excellent bug report: > In recent Fedora releases (F17 & F18) some users have reported seeing > messages similar to > > [ 15.478160] kvm: Could not allocate 304 bytes percpu data > [ 15.478174] PERCPU: allocation failed, size=304 align=32, alloc from > reserved chunk failed > > during system boot. In some cases, users have also reported seeing this > message along with a failed load of other modules. > > What is happening is systemd is loading an instance of the kvm module for > each cpu found (see commit e9bda3b). When the module load occurs the kernel > currently allocates the modules percpu data area prior to checking to see > if the module is already loaded or is in the process of being loaded. If > the module is already loaded, or finishes load, the module loading code > releases the current instance's module's percpu data. Now we have a new state MODULE_STATE_UNFORMED, we can insert the module into the list (and thus guarantee its uniqueness) before we allocate the per-cpu region. Reported-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Tested-by: Prarit Bhargava <prarit@redhat.com>
1 parent 0d21b0e
File | Mode | Size |
---|---|---|
802 | ||
8021q | ||
9p | ||
appletalk | ||
atm | ||
ax25 | ||
batman-adv | ||
bluetooth | ||
bridge | ||
caif | ||
can | ||
ceph | ||
core | ||
dcb | ||
dccp | ||
decnet | ||
dns_resolver | ||
dsa | ||
ethernet | ||
ieee802154 | ||
ipv4 | ||
ipv6 | ||
ipx | ||
irda | ||
iucv | ||
key | ||
l2tp | ||
lapb | ||
llc | ||
mac80211 | ||
mac802154 | ||
netfilter | ||
netlabel | ||
netlink | ||
netrom | ||
nfc | ||
openvswitch | ||
packet | ||
phonet | ||
rds | ||
rfkill | ||
rose | ||
rxrpc | ||
sched | ||
sctp | ||
sunrpc | ||
tipc | ||
unix | ||
wanrouter | ||
wimax | ||
wireless | ||
x25 | ||
xfrm | ||
Kconfig | -rw-r--r-- | 10.9 KB |
Makefile | -rw-r--r-- | 2.0 KB |
compat.c | -rw-r--r-- | 24.6 KB |
nonet.c | -rw-r--r-- | 552 bytes |
socket.c | -rw-r--r-- | 83.3 KB |
sysctl_net.c | -rw-r--r-- | 2.8 KB |
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...