Re: 2.6.30: hibernation/swsusp lockup due to acpi-cpufreq

From: Johannes Stezenbach
Date: Tue Jun 16 2009 - 16:44:46 EST

On Tue, Jun 16, 2009 at 01:25:58PM -0700, Pallipadi, Venkatesh wrote:
> Can you try the patch below (your changes + a warnon). That should give
> the stack trace with successful suspend-resume.
> acpi-cpufreq will not directly disable interrupt and call these routines.
> So, it will be interesting to see how we are ending up in this state.

Yes, I actually had the same idea and just did it ;-)
I also found this:

------------[ cut here ]------------
WARNING: at kernel/up.c:18 smp_call_function_single+0x45/0x60()
Hardware name: 2373Y4M
Modules linked in: ath5k mac80211 cfg80211 uhci_hcd ehci_hcd
Pid: 4139, comm: bash Not tainted 2.6.30 #8
Call Trace:
[<c011ea0d>] warn_slowpath_common+0x60/0x90
[<c010d86c>] ? do_drv_read+0x0/0x31
[<c011ea4a>] warn_slowpath_null+0xd/0x10
[<c013acc1>] smp_call_function_single+0x45/0x60
[<c010d4e5>] get_cur_val+0x62/0x6c
[<c010d72f>] get_cur_freq_on_cpu+0x35/0x58
[<c03786e9>] cpufreq_suspend+0x76/0xd9
[<c0136c3b>] ? clockevents_notify+0x1e/0x68
[<c02ff570>] sysdev_suspend+0x4e/0x182
[<c013fd28>] hibernation_snapshot+0x89/0x16b
[<c013fe99>] hibernate+0x8f/0x147
[<c013ec82>] ? state_store+0x0/0xa2
[<c013ecd7>] state_store+0x55/0xa2
[<c013ec82>] ? state_store+0x0/0xa2
[<c024dff5>] kobj_attr_store+0x1a/0x22
[<c01a7164>] sysfs_write_file+0xb4/0xdf
[<c01a70b0>] ? sysfs_write_file+0x0/0xdf
[<c0170cf2>] vfs_write+0x8a/0x12c
[<c0170e2d>] sys_write+0x3b/0x60
[<c01028f4>] sysenter_do_call+0x12/0x26
---[ end trace 1c2172bce3982a59 ]---

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