From: Shaohua Li <shaohua.li@intel.com>
To: "robert.moore" <robert.moore@intel.com>,
"Lin, Ming M" <ming.m.lin@intel.com>
Cc: linux acpi <linux-acpi@vger.kernel.org>
Subject: [BUG report] lockdep deadlock warning in shutdown
Date: Fri, 03 Jun 2011 11:24:32 +0800 [thread overview]
Message-ID: <1307071472.15392.60.camel@sli10-conroe> (raw)
running 3.0-rc1, shutting down my system triggers a lockdep deadlock
warning.
The deadlock warning is triggered when executing
acpi_hw_clear_acpi_status, stack trace is something like:
...
__lock_acquire
?acpi_os_acquire_lock
lock_acquire
?acpi_os_acquire_lock
?_raw_spin_lock_irqsave
?acpi_hw_enable_runtime_gpe_block
_raw_spin_lock_irqsave
?acpi_os_acquire_lock
?acpi-hw_write
acpi_os_acquire_lock
acpi_ev_walk_gpe_list
acpi_hw_clear_acpi_status
acpi_enter_sleep_state
...
I wrote it down by hand since this is shutdown, no way to get the log.
also since the screen scrolls fast, I didn't catch another code path the
locks are taken which lockdep prints out.
Thanks,
Shaohua
next reply other threads:[~2011-06-03 3:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-03 3:24 Shaohua Li [this message]
2011-06-03 3:42 ` [BUG report] lockdep deadlock warning in shutdown Moore, Robert
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