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SubjectKernel BUG during suspend to disk with 2.6.32-rc8-git3
Using the mainline kernel git describe == v2.6.32-rc8-259-g2127816),
I get the following BUG and WARNING:

================================
BUG: sleeping function called from invalid context at
drivers/acpi/acpica/psloop.c:826
in_atomic(): 0, irqs_disabled(): 1, pid: 3616, name: s2disk
1 lock held by s2disk/3616:

#0: (pm_mutex){+.+.+.}, at: [<ffffffff8106ee46>]
snapshot_ioctl+0x52/0x4ba
irq event stamp: 742026
hardirqs last enabled at (742025): [<ffffffff8125af88>]
__mutex_unlock_slowpath+0x100/0x10b
hardirqs last disabled at (742026): [<ffffffff8106c22e>]
hibernation_snapshot+0xa0/0x1be
softirqs last enabled at (741898): [<ffffffff81041936>]
__do_softirq+0x127/0x13d
softirqs last disabled at (741877): [<ffffffff8100cb7c>]
call_softirq+0x1c/0x28
Pid: 3616, comm: s2disk Not tainted
2.6.32-rc8-Linus-00259-g2127816-dirty #127
Call Trace:
[<ffffffff8105c810>] ? print_irqtrace_events+0xd0/0xd4
[<ffffffff81033ff9>] __might_sleep+0xef/0xf4
[<ffffffff81181a9c>] acpi_ps_complete_op+0x2bc/0x2d6
[<ffffffff8116baa5>] ? acpi_ds_exec_end_op+0x54d/0x570
[<ffffffff81182378>] acpi_ps_parse_loop+0x8c2/0xa4e
[<ffffffff8105da14>] ? trace_hardirqs_off+0xd/0xf
[<ffffffff810ae5ed>] ? kmem_cache_alloc+0x10e/0x147
[<ffffffff81181291>] acpi_ps_parse_aml+0x10a/0x3e1
[<ffffffff81189073>] ? acpi_ut_create_internal_object_dbg+0x22/0x87
[<ffffffff81182ca0>] acpi_ps_execute_method+0x22a/0x336
[<ffffffff8117d490>] acpi_ns_evaluate+0x18c/0x2c9
[<ffffffff81184230>] acpi_rs_set_srs_method_data+0xdd/0x105
[<ffffffff81183cfd>] acpi_set_current_resources+0x37/0x45
[<ffffffff81166229>] acpi_pci_link_set+0x128/0x222
[<ffffffff810533ab>] ? hres_timers_resume+0x3f/0x41
[<ffffffff81166356>] irqrouter_resume+0x33/0x4b
[<ffffffff811b5dc9>] __sysdev_resume+0x20/0xc0
[<ffffffff811b5ecc>] sysdev_resume+0x63/0xa4
[<ffffffff8106c29f>] hibernation_snapshot+0x111/0x1be
[<ffffffff8106f01d>] snapshot_ioctl+0x229/0x4ba
[<ffffffff8105e9bc>] ? trace_hardirqs_on_caller+0x10c/0x130
[<ffffffff810c0451>] vfs_ioctl+0x1d/0x82
[<ffffffff810c09b0>] do_vfs_ioctl+0x483/0x4c9
[<ffffffff810b4d9e>] ? fget_light+0xdd/0xeb
[<ffffffff810b4d13>] ? fget_light+0x52/0xeb
[<ffffffff810c0a38>] sys_ioctl+0x42/0x65
[<ffffffff8100b9eb>] system_call_fastpath+0x16/0x1b
------------[ cut here ]------------
WARNING: at drivers/base/sys.c:353 __sysdev_resume+0x4f/0xc0()
Hardware name: HP Pavilion dv2700 Notebook PC
Interrupts enabled after irqrouter_resume+0x0/0x4b
Modules linked in: aes_x86_64 aes_generic af_packet xt_tcpudp xt_pkttype
ipt_LOG xt_limit snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device edd
nfs lockd nfs_acl auth_rpcgss sunrpc cpufreq_conservative
cpufreq_userspace cpufreq_powersave powernow_k8 xt_NOTRACK ipt_REJECT
xt_state iptable_raw iptable_filter nf_conntrack_netbios_ns
nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables fuse
ext3 jbd loop dm_mod snd_hda_codec_conexant arc4 ecb b43 snd_hda_intel
mac80211 cfg80211 snd_hda_codec rfkill snd_pcm uvcvideo led_class
videodev snd_timer v4l1_compat snd i2c_nforce2 v4l2_compat_ioctl32
ide_cd_mod k8temp soundcore ssb serio_raw ac battery hwmon joydev sg
forcedeth snd_page_alloc button i2c_core cdrom ext4 mbcache jbd2 crc16
sd_mod ahci ohci_hcd libata scsi_mod ehci_hcd usbcore fan processor
ide_pci_generic amd74xx ide_core thermal
Pid: 3616, comm: s2disk Not tainted
2.6.32-rc8-Linus-00259-g2127816-dirty #127
Call Trace:

[<ffffffff8103c789>] warn_slowpath_common+0x77/0x8f
[<ffffffff8103c7ee>] warn_slowpath_fmt+0x3c/0x3e
[<ffffffff81166323>] ? irqrouter_resume+0x0/0x4b
[<ffffffff811b5df8>] __sysdev_resume+0x4f/0xc0
[<ffffffff811b5ecc>] sysdev_resume+0x63/0xa4
[<ffffffff8106c29f>] hibernation_snapshot+0x111/0x1be
[<ffffffff8106f01d>] snapshot_ioctl+0x229/0x4ba
[<ffffffff8105e9bc>] ? trace_hardirqs_on_caller+0x10c/0x130
[<ffffffff810c0451>] vfs_ioctl+0x1d/0x82
[<ffffffff810c09b0>] do_vfs_ioctl+0x483/0x4c9
[<ffffffff810b4d9e>] ? fget_light+0xdd/0xeb
[<ffffffff810b4d13>] ? fget_light+0x52/0xeb
[<ffffffff810c0a38>] sys_ioctl+0x42/0x65
[<ffffffff8100b9eb>] system_call_fastpath+0x16/0x1b
---[ end trace 2db18c3096add170 ]---
==============================
I do not know if this is a regression, as I just recently tried hibernation.

The system has x86_64 architecture. The source is "dirty" due to a local
modification of the rtl8187 driver, which is not even loaded.

If additional info is needed, please ask.

Larry



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