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 |
|---|---|---|
| Kconfig | -rw-r--r-- | 20.4 KB |
| Makefile | -rw-r--r-- | 2.2 KB |
| act_api.c | -rw-r--r-- | 23.8 KB |
| act_csum.c | -rw-r--r-- | 13.3 KB |
| act_gact.c | -rw-r--r-- | 5.5 KB |
| act_ipt.c | -rw-r--r-- | 7.6 KB |
| act_mirred.c | -rw-r--r-- | 6.8 KB |
| act_nat.c | -rw-r--r-- | 7.3 KB |
| act_pedit.c | -rw-r--r-- | 6.3 KB |
| act_police.c | -rw-r--r-- | 9.7 KB |
| act_simple.c | -rw-r--r-- | 5.3 KB |
| act_skbedit.c | -rw-r--r-- | 5.9 KB |
| cls_api.c | -rw-r--r-- | 13.9 KB |
| cls_basic.c | -rw-r--r-- | 6.5 KB |
| cls_cgroup.c | -rw-r--r-- | 7.2 KB |
| cls_flow.c | -rw-r--r-- | 15.4 KB |
| cls_fw.c | -rw-r--r-- | 8.5 KB |
| cls_route.c | -rw-r--r-- | 12.3 KB |
| cls_rsvp.c | -rw-r--r-- | 761 bytes |
| cls_rsvp.h | -rw-r--r-- | 14.9 KB |
| cls_rsvp6.c | -rw-r--r-- | 768 bytes |
| cls_tcindex.c | -rw-r--r-- | 11.8 KB |
| cls_u32.c | -rw-r--r-- | 17.0 KB |
| em_canid.c | -rw-r--r-- | 5.7 KB |
| em_cmp.c | -rw-r--r-- | 2.1 KB |
| em_ipset.c | -rw-r--r-- | 3.1 KB |
| em_meta.c | -rw-r--r-- | 21.4 KB |
| em_nbyte.c | -rw-r--r-- | 1.9 KB |
| em_text.c | -rw-r--r-- | 3.7 KB |
| em_u32.c | -rw-r--r-- | 1.4 KB |
| ematch.c | -rw-r--r-- | 14.5 KB |
| sch_api.c | -rw-r--r-- | 41.5 KB |
| sch_atm.c | -rw-r--r-- | 19.0 KB |
| sch_blackhole.c | -rw-r--r-- | 1.2 KB |
| sch_cbq.c | -rw-r--r-- | 47.6 KB |
| sch_choke.c | -rw-r--r-- | 14.8 KB |
| sch_codel.c | -rw-r--r-- | 7.4 KB |
| sch_drr.c | -rw-r--r-- | 11.3 KB |
| sch_dsmark.c | -rw-r--r-- | 11.2 KB |
| sch_fifo.c | -rw-r--r-- | 4.1 KB |
| sch_fq_codel.c | -rw-r--r-- | 15.5 KB |
| sch_generic.c | -rw-r--r-- | 21.4 KB |
| sch_gred.c | -rw-r--r-- | 13.8 KB |
| sch_hfsc.c | -rw-r--r-- | 40.9 KB |
| sch_htb.c | -rw-r--r-- | 42.6 KB |
| sch_ingress.c | -rw-r--r-- | 3.2 KB |
| sch_mq.c | -rw-r--r-- | 5.7 KB |
| sch_mqprio.c | -rw-r--r-- | 10.4 KB |
| sch_multiq.c | -rw-r--r-- | 9.3 KB |
| sch_netem.c | -rw-r--r-- | 24.0 KB |
| sch_plug.c | -rw-r--r-- | 6.7 KB |
| sch_prio.c | -rw-r--r-- | 8.4 KB |
| sch_qfq.c | -rw-r--r-- | 40.3 KB |
| sch_red.c | -rw-r--r-- | 8.7 KB |
| sch_sfb.c | -rw-r--r-- | 16.6 KB |
| sch_sfq.c | -rw-r--r-- | 22.5 KB |
| sch_tbf.c | -rw-r--r-- | 10.5 KB |
| sch_teql.c | -rw-r--r-- | 12.0 KB |
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