[Linux-cachefs] CacheFiles: Error: Unexpected object collision_

[Fredrik Widlund]

Multiple crashes.

Is there a limit to the number of "objects" than can be cached?

Regards,
Fredrik

Linux n101.p1.x0.local 2.6.32-ARCH #1 SMP PREEMPT Tue Feb 9 15:12:10 CET 2010 x86_64 Intel(R) Xeon(R) CPU E5520 @ 2.27GHz GenuineIntel GNU/Linux

Feb 11 22:08:22 n101 kernel:
Feb 11 22:08:22 n101 kernel: CacheFiles: Error: Unexpected object collision
Feb 11 22:08:22 n101 kernel: object: OBJ5e63
Feb 11 22:08:22 n101 kernel: objstate=OBJECT_LOOKING_UP fl=0 swfl=a ev=0[7b]
Feb 11 22:08:22 n101 kernel: ops=0 inp=0 exc=0
Feb 11 22:08:22 n101 kernel: parent=ffff88041315a140
Feb 11 22:08:22 n101 kernel: cookie=ffff880427af5960 [pr=ffff880427cfb050 nd=ffff880417c73950 fl=7]
Feb 11 22:08:22 n101 kernel: key=[20] '0100018100000000787f0000206d1364d6ed0300'
Feb 11 22:08:22 n101 kernel: xobject: OBJ4f89
Feb 11 22:08:22 n101 kernel: xobjstate=OBJECT_ACTIVE fl=0 swfl=8 ev=4[7b]
Feb 11 22:08:22 n101 kernel: xops=0 inp=0 exc=0
Feb 11 22:08:22 n101 kernel: xparent=ffff88041315a140
Feb 11 22:08:22 n101 kernel: xcookie=ffff8800cba04aa0 [pr=ffff880427cfb050 nd=ffff88011b5bf6b8 fl=c]
Feb 11 22:08:22 n101 kernel: xkey=[20] '0100018100000000787f0000206d1364d6ed0300'
Feb 11 22:08:22 n101 kernel: ------------[ cut here ]------------
Feb 11 22:08:22 n101 kernel: kernel BUG at fs/cachefiles/namei.c:147!
Feb 11 22:08:22 n101 kernel: invalid opcode: 0000 [#1] PREEMPT SMP
Feb 11 22:08:22 n101 kernel: last sysfs file: /sys/module/fscache/initstate
Feb 11 22:08:22 n101 kernel: CPU 2
Feb 11 22:08:22 n101 kernel: Modules linked in: cachefiles nfsd nfs lockd fscache nfs_acl auth_rpcgss sunrpc fuse dm_mod sr_mod cdro
m xt_tcpudp ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack iptable_filter ip_tables x_tables joydev usbhid hid ex
t2 mbcache usb_storage psmouse pcspkr uhci_hcd ehci_hcd iTCO_wdt dcdbas iTCO_vendor_support usbcore serio_raw 8021q evdev sg thermal
 power_meter button bnx2 processor bonding ipv6 rtc_cmos rtc_core rtc_lib xfs exportfs sd_mod mptsas mptscsih mptbase scsi_transport
_sas scsi_mod
Feb 11 22:08:22 n101 kernel: Pid: 2180, comm: kslowd003 Not tainted 2.6.32-ARCH #1 PowerEdge R610
Feb 11 22:08:22 n101 kernel: RIP: 0010:[<ffffffffa03fd8fa>]  [<ffffffffa03fd8fa>] cachefiles_walk_to_object+0x64a/0x7e0 [cachefiles]
Feb 11 22:08:22 n101 kernel: RSP: 0018:ffff8804056c5ce0  EFLAGS: 00010286
Feb 11 22:08:22 n101 kernel: RAX: ffff88000fc51c20 RBX: ffff8804201ff2c0 RCX: ffff880413010200
Feb 11 22:08:22 n101 kernel: RDX: 0000000000000000 RSI: ffffea000e428380 RDI: 0000000000000286
Feb 11 22:08:22 n101 kernel: RBP: ffff880425b6f5c0 R08: 0000000000000000 R09: 0000000000000000
Feb 11 22:08:22 n101 kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff880425b6f5c0
Feb 11 22:08:22 n101 kernel: R13: ffff8800cf2e3f20 R14: ffff88042d677200 R15: ffff8800cf2e3e00
Feb 11 22:08:22 n101 kernel: FS:  0000000000000000(0000) GS:ffff88000fc40000(0000) knlGS:0000000000000000
Feb 11 22:08:22 n101 kernel: CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
Feb 11 22:08:22 n101 kernel: CR2: 00007f780cadf000 CR3: 0000000001001000 CR4: 00000000000006e0
Feb 11 22:08:22 n101 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Feb 11 22:08:22 n101 kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Feb 11 22:08:22 n101 kernel: Process kslowd003 (pid: 2180, threadinfo ffff8804056c4000, task ffff88042d431ac0)
Feb 11 22:08:22 n101 kernel: Stack:
Feb 11 22:08:22 n101 kernel: 0000000000000000 0000000000000000 ffff8804201ff3c8 ffff8801734a7400
Feb 11 22:08:22 n101 kernel: <0> ffff88042d677328 ffff88042d677320 ffff88041d3dd440 ffff8804056c5d48
Feb 11 22:08:22 n101 kernel: <0> ffff8804201ff340 ffff88042d431ac0 000000000000037a 0000000000000400
Feb 11 22:08:22 n101 kernel: Call Trace:
Feb 11 22:08:22 n101 kernel: [<ffffffffa03fbf55>] ? cachefiles_lookup_object+0x55/0x100 [cachefiles]
Feb 11 22:08:22 n101 kernel: [<ffffffffa031b4d0>] ? fscache_lookup_object+0x90/0x180 [fscache]
Feb 11 22:08:22 n101 kernel: [<ffffffffa031bf7a>] ? fscache_object_slow_work_execute+0x56a/0x860 [fscache]
Feb 11 22:08:22 n101 kernel: [<ffffffff81075e84>] ? bit_waitqueue+0x14/0xc0
Feb 11 22:08:22 n101 kernel: [<ffffffff810cb79c>] ? slow_work_execute+0x27c/0x2e0
Feb 11 22:08:22 n101 kernel: [<ffffffff810cb9fb>] ? slow_work_thread+0x1fb/0x330
Feb 11 22:08:22 n101 kernel: [<ffffffff81075fa0>] ? autoremove_wake_function+0x0/0x30
Feb 11 22:08:22 n101 kernel: [<ffffffff810cb800>] ? slow_work_thread+0x0/0x330
Feb 11 22:08:22 n101 kernel: [<ffffffff81075bde>] ? kthread+0x8e/0xa0
Feb 11 22:08:22 n101 kernel: [<ffffffff8101315a>] ? child_rip+0xa/0x20
Feb 11 22:08:22 n101 kernel: [<ffffffff81075b50>] ? kthread+0x0/0xa0
Feb 11 22:08:22 n101 kernel: [<ffffffff81013150>] ? child_rip+0x0/0x20
Feb 11 22:08:22 n101 kernel: Code: c7 e0 eb 46 48 c7 c7 04 14 40 a0 31 c0 e8 b1 8f f3 e0 48 c7 c7 58 0c 40 a0 31 c0 e8 a3 8f f3 e0 4
c 89 fe 48 89 df e8 a6 f8 ff ff <0f> 0b eb fe 48 8d 74 24 50 48 89 ef e8 b5 87 c7 e0 41 f6 87 08
Feb 11 22:08:22 n101 kernel: RIP  [<ffffffffa03fd8fa>] cachefiles_walk_to_object+0x64a/0x7e0 [cachefiles]
Feb 11 22:08:22 n101 kernel: RSP <ffff8804056c5ce0>
Feb 11 22:08:22 n101 kernel: ---[ end trace d787684e377d2c82 ]---