http://bugzilla.kernel.org/show_bug.cgi?id=14101
URL: http://bugs.debian.org/541677
Summary: acpi_idle_enter_bm() calls sched_clock_cpu() with
interrupts disabled
Product: ACPI
Version: 2.5
Kernel Version: 2.6.30-5 (Debian)
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Processor
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: Yes
acpi_idle_enter_bm() may call sched_clock_idle_sleep_event(), which calls
sched_clock_cpu(), which asserts:
WARN_ON_ONCE(!irqs_disabled());
Here's a full trace from <http://bugs.debian.org/541677>:
> [ 391.549555] ------------[ cut here ]------------
> [ 391.549574] WARNING: at
> /build/mattems-linux-2.6_2.6.30-5-amd64-_9JoL1/linux-2.6-2.6.30-5/debian/build/source_amd64_none/kernel/sched_clock.c:170
> sched_clock_cpu+0x7b/0x202()
> [ 391.549582] Hardware name: Vostro1710
> [ 391.549586] Modules linked in: i915 drm i2c_algo_bit xt_multiport
> binfmt_misc ppdev parport_pc lp parport sco bridge stp bnep rfcomm l2cap
> cachefiles autofs4 acpi_cpufreq cpufreq_userspace cpufreq_stats
> cpufreq_conservative cpufreq_powersave iptable_mangle iptable_nat
> iptable_filter ip_tables ipt_MASQUERADE nf_nat nf_conntrack_ipv4
> nf_defrag_ipv4 x_tables nf_conntrack microcode nfsd exportfs nfs lockd
> fscache nfs_acl auth_rpcgss sunrpc bonding fuse coretemp i8k loop
> snd_hda_codec_realtek arc4 ecb snd_hda_intel snd_hda_codec iwlagn snd_hwdep
> snd_pcm_oss snd_mixer_oss iwlcore snd_pcm snd_seq_midi snd_rawmidi
> snd_seq_midi_event snd_seq uvcvideo snd_timer snd_seq_device dell_laptop
> videodev mac80211 i2c_i801 joydev rfkill snd serio_raw v4l1_compat soundcore
> btusb snd_page_alloc dcdbas v4l2_compat_ioctl32 i2c_core bluetooth pcspkr
> cfg80211 psmouse evdev battery processor wmi button ac ext3 jbd mbcache
> dm_mirror dm_region_hash dm_log dm_snapshot dm_mod raid10 raid456 raid6_pq!
async_x
> r async_memcpy async_tx xor raid1 raid0 multipath linear md_mod sd_mod
> crc_t10dif ide_cd_mod cdrom ata_generic ide_pci_generic ahci video output
> sdhci_pci sdhci mmc_core led_class r8169 mii libata uhci_hcd piix scsi_mod
> ide_core ehci_hcd intel_agp thermal fan thermal_sys
> [ 391.549836] Pid: 0, comm: swapper Not tainted 2.6.30-1-amd64 #1
> [ 391.549841] Call Trace:
> [ 391.549852] [<ffffffff80258897>] ? sched_clock_cpu+0x7b/0x202
> [ 391.549861] [<ffffffff80258897>] ? sched_clock_cpu+0x7b/0x202
> [ 391.549871] [<ffffffff8024238f>] ? warn_slowpath_common+0x77/0xa3
> [ 391.549880] [<ffffffff80258897>] ? sched_clock_cpu+0x7b/0x202
> [ 391.549905] [<ffffffffa020a4db>] ? acpi_idle_enter_bm+0x16c/0x2a8
> [processor]
> [ 391.549916] [<ffffffff803fcfe0>] ? cpuidle_idle_call+0x8b/0xc7
> [ 391.549926] [<ffffffff8064e140>] ? early_idt_handler+0x0/0x71
> [ 391.549936] [<ffffffff8020edda>] ? cpu_idle+0x50/0x91
> [ 391.549943] [<ffffffff8064ec62>] ? start_kernel+0x37a/0x386
> [ 391.549951] [<ffffffff8064e3b7>] ? x86_64_start_kernel+0xf9/0x106
> [ 391.549957] ---[ end trace 1aa56acdd82f3805 ]---
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