| Message ID | 1348219786-31221-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
On Fri, Sep 21, 2012 at 02:59:46PM +0530, Aneesh Kumar K.V wrote: >From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> > >===================================== >[ BUG: bad unlock balance detected! ] >3.6.0-rc5-00338-gcaa1d63-dirty #6 Not tainted >------------------------------------- >swapper/0/1 is trying to release lock (eeh_mutex) at: >[<c000000000058218>] .eeh_add_to_parent_pe+0x318/0x410 >but there are no more locks to release! > >other info that might help us debug this: >no locks held by swapper/0/1. > >stack backtrace: >Call Trace: >[c00000003e483870] [c000000000013310] .show_stack+0x70/0x1c0 (unreliable) >[c00000003e483920] [c0000000000d8310] .print_unlock_inbalance_bug+0x110/0x120 >[c00000003e4839b0] [c0000000000d9a50] .lock_release+0x1d0/0x240 >[c00000003e483a60] [c000000000778064] .__mutex_unlock_slowpath+0xb4/0x250 >[c00000003e483b10] [c000000000058218] .eeh_add_to_parent_pe+0x318/0x410 >[c00000003e483bc0] [c00000000005a118] .pseries_eeh_of_probe+0x258/0x2f0 >[c00000003e483cc0] [c000000000032528] .traverse_pci_devices+0xa8/0x150 >[c00000003e483d70] [c000000000aa7288] .eeh_init+0xd4/0x140 >[c00000003e483e00] [c00000000000abc4] .do_one_initcall+0x64/0x1e0 >[c00000003e483ec0] [c000000000a90418] .kernel_init+0x1e8/0x2bc >[c00000003e483f90] [c00000000002048c] .kernel_thread+0x54/0x70 >EEH: PCI Enhanced I/O Error Handling Enabled > >Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Gavin Shan <shangw@linux.vnet.ibm.com> Thanks, Gavin >--- > arch/powerpc/platforms/pseries/eeh_pe.c | 5 +---- > 1 file changed, 1 insertion(+), 4 deletions(-) > >diff --git a/arch/powerpc/platforms/pseries/eeh_pe.c b/arch/powerpc/platforms/pseries/eeh_pe.c >index 9d35543..797cd18 100644 >--- a/arch/powerpc/platforms/pseries/eeh_pe.c >+++ b/arch/powerpc/platforms/pseries/eeh_pe.c >@@ -105,11 +105,8 @@ static struct eeh_pe *eeh_phb_pe_get(struct pci_controller *phb) > * the PE for PHB has been determined when that > * was created. > */ >- if ((pe->type & EEH_PE_PHB) && >- pe->phb == phb) { >- eeh_unlock(); >+ if ((pe->type & EEH_PE_PHB) && pe->phb == phb) > return pe; >- } > } > > return NULL; >-- >1.7.10 >
===================================== [ BUG: bad unlock balance detected! ] 3.6.0-rc5-00338-gcaa1d63-dirty #6 Not tainted ------------------------------------- swapper/0/1 is trying to release lock (eeh_mutex) at: [<c000000000058218>] .eeh_add_to_parent_pe+0x318/0x410 but there are no more locks to release! other info that might help us debug this: no locks held by swapper/0/1. stack backtrace: Call Trace: [c00000003e483870] [c000000000013310] .show_stack+0x70/0x1c0 (unreliable) [c00000003e483920] [c0000000000d8310] .print_unlock_inbalance_bug+0x110/0x120 [c00000003e4839b0] [c0000000000d9a50] .lock_release+0x1d0/0x240 [c00000003e483a60] [c000000000778064] .__mutex_unlock_slowpath+0xb4/0x250 [c00000003e483b10] [c000000000058218] .eeh_add_to_parent_pe+0x318/0x410 [c00000003e483bc0] [c00000000005a118] .pseries_eeh_of_probe+0x258/0x2f0 [c00000003e483cc0] [c000000000032528] .traverse_pci_devices+0xa8/0x150 [c00000003e483d70] [c000000000aa7288] .eeh_init+0xd4/0x140 [c00000003e483e00] [c00000000000abc4] .do_one_initcall+0x64/0x1e0 [c00000003e483ec0] [c000000000a90418] .kernel_init+0x1e8/0x2bc [c00000003e483f90] [c00000000002048c] .kernel_thread+0x54/0x70 EEH: PCI Enhanced I/O Error Handling Enabled Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> --- arch/powerpc/platforms/pseries/eeh_pe.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/arch/powerpc/platforms/pseries/eeh_pe.c b/arch/powerpc/platforms/pseries/eeh_pe.c index 9d35543..797cd18 100644 --- a/arch/powerpc/platforms/pseries/eeh_pe.c +++ b/arch/powerpc/platforms/pseries/eeh_pe.c @@ -105,11 +105,8 @@ static struct eeh_pe *eeh_phb_pe_get(struct pci_controller *phb) * the PE for PHB has been determined when that * was created. */ - if ((pe->type & EEH_PE_PHB) && - pe->phb == phb) { - eeh_unlock(); + if ((pe->type & EEH_PE_PHB) && pe->phb == phb) return pe; - } } return NULL;
From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>