[Linux-cachefs] Error run on fscache on Centos 2.6.30.2 (pached rdwr.c)

[Duc Le Minh]

Affter run 5 minute console show message:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
IP: [<ffffffffa02c7776>] fscache_object_slow_work_execute+0x5d9/0xad4
[fscache]
PGD 0
Oops: 0002 [#1] SMP
last sysfs file: /sys/devices/system/cpu/cpu3/cache/index2/shared_cpu_map
CPU 1
Modules linked in: md5 nfs fuse nfsd lockd nfs_acl auth_rpcgss exportfs
autofs4 hidp rfcomm l2cap bluetooth sunrpc cachefiles fscache ipip tunnel4
bonding dm_multipath scsi_dh video output sbs sbshc battery acpi_memhotplug
ac ipv6 parport_pc lp parport e1000e shpchp sg i2c_i801 i3000_edac edac_core
rtc_cmos rtc_core button i2c_core serio_raw floppy rtc_lib pcspkr
dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod usb_storage
ata_piix libata sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd [last
unloaded: freq_table]
Pid: 4136, comm: kslowd Not tainted 2.6.30.2 #3 PDSML
RIP: 0010:[<ffffffffa02c7776>]  [<ffffffffa02c7776>]
fscache_object_slow_work_execute+0x5d9/0xad4 [fscache]
RSP: 0018:ffff8802120ffea0  EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8800e4c98ef8 RCX: 0000000000000000
RDX: ffff880215c621c0 RSI: 0000000000000007 RDI: ffff8800e4c98e9c
RBP: ffff8800e4c98e80 R08: ffffffff807f18c0 R09: 0000000000000000
R10: ffffffff807f18c0 R11: 0000000000000000 R12: 0000000000000032
R13: 00000001000bf349 R14: ffffffff807f4160 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff880028063000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000040 CR3: 0000000000201000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process kslowd (pid: 4136, threadinfo ffff8802120fe000, task
ffff880215db37b0)
Stack:
 0000000000000287 ffff8800e4c98ef8 0000000000000001 0000000000000032
 ffffffff807f18c0 ffffffff80279056 00000003170d74b0 ffff880207157d60
 0000000000000000 ffff880215db37b0 ffffffff8024a4fe ffff8802120ffef8
Call Trace:
 [<ffffffff80279056>] ? slow_work_thread+0x285/0x43a
 [<ffffffff8024a4fe>] ? autoremove_wake_function+0x0/0x2e
 [<ffffffff80278dd1>] ? slow_work_thread+0x0/0x43a
 [<ffffffff8024a3cf>] ? kthread+0x54/0x81
 [<ffffffff8020c93a>] ? child_rip+0xa/0x20
 [<ffffffff8020c44e>] ? apic_timer_interrupt+0xe/0x20
 [<ffffffff8024a37b>] ? kthread+0x0/0x81
 [<ffffffff8020c930>] ? child_rip+0x0/0x20
Code: e9 f4 03 00 00 48 8b 45 60 48 83 65 28 fd 48 89 ef 48 8b 00 ff 50 18
48 8d 7d 1c e8 c4 1c 1f e0 c7 45 00 06 00 00 00 48 8b 45 68 <f0> 0f ba 70 40
01 19 d2 85 d2 74 12 48 8b 7d 68 be 01 00 00 00
RIP  [<ffffffffa02c7776>] fscache_object_slow_work_execute+0x5d9/0xad4
[fscache]
 RSP <ffff8802120ffea0>
CR2: 0000000000000040
---[ end trace 0ac793d0a1e3af8c ]---
BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
IP: [<ffffffffa02c7776>] fscache_object_slow_work_execute+0x5d9/0xad4
[fscache]
PGD 203992067 PUD 20241b067 PMD 0
Oops: 0002 [#2] SMP
last sysfs file: /sys/devices/system/cpu/cpu3/cache/index2/shared_cpu_map
CPU 0
Modules linked in: md5 nfs fuse nfsd lockd nfs_acl auth_rpcgss exportfs
autofs4 hidp rfcomm l2cap bluetooth sunrpc cachefiles fscache ipip tunnel4
bonding dm_multipath scsi_dh video output sbs sbshc battery acpi_memhotplug
ac ipv6 parport_pc lp parport e1000e shpchp sg i2c_i801 i3000_edac edac_core
rtc_cmos rtc_core button i2c_core serio_raw floppy rtc_lib pcspkr
dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod usb_storage
ata_piix libata sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd [last
unloaded: freq_table]
Pid: 4279, comm: kslowd Tainted: G      D    2.6.30.2 #3 PDSML
RIP: 0010:[<ffffffffa02c7776>]  [<ffffffffa02c7776>]
fscache_object_slow_work_execute+0x5d9/0xad4 [fscache]
RSP: 0018:ffff880203973ea0  EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8800e4d41db8 RCX: 0000000000000001
RDX: ffff880215c621c0 RSI: 0000000000000007 RDI: ffff8800e4d41d5c
RBP: ffff8800e4d41d40 R08: 0000000000000287 R09: ffff88002802f460
R10: 0000000000000287 R11: 0000000000000000 R12: 0000000000000032
R13: 00000001000ebf2e R14: ffffffff807f4160 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88002804b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000040 CR3: 0000000206120000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process kslowd (pid: 4279, threadinfo ffff880203972000, task
ffff8801fd22d5f0)
Stack:
 0000000000000287 ffff8800e4d41db8 0000000000000001 0000000000000032
 ffffffff807f18c0 ffffffff80279056 00000003158b14f0 ffff8802120ffd60
 0000000000000000 ffff8801fd22d5f0 ffffffff8024a4fe ffff880203973ef8
Call Trace:
 [<ffffffff80279056>] ? slow_work_thread+0x285/0x43a
 [<ffffffff8024a4fe>] ? autoremove_wake_function+0x0/0x2e
 [<ffffffff80278dd1>] ? slow_work_thread+0x0/0x43a
 [<ffffffff8024a3cf>] ? kthread+0x54/0x81
 [<ffffffff8020c93a>] ? child_rip+0xa/0x20
 [<ffffffff8020c44e>] ? apic_timer_interrupt+0xe/0x20
 [<ffffffff8024a37b>] ? kthread+0x0/0x81
 [<ffffffff8020c930>] ? child_rip+0x0/0x20
Code: e9 f4 03 00 00 48 8b 45 60 48 83 65 28 fd 48 89 ef 48 8b 00 ff 50 18
48 8d 7d 1c e8 c4 1c 1f e0 c7 45 00 06 00 00 00 48 8b 45 68 <f0> 0f ba 70 40
01 19 d2 85 d2 74 12 48 8b 7d 68 be 01 00 00 00
RIP  [<ffffffffa02c7776>] fscache_object_slow_work_execute+0x5d9/0xad4
[fscache]
 RSP <ffff880203973ea0>
CR2: 0000000000000040
---[ end trace 0ac793d0a1e3af8d ]---
[root at sannhac127 ~]#