[Bugme-new] [Bug 13469] New: fscache crash

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Sun Jun 7 02:20:32 PDT 2009


http://bugzilla.kernel.org/show_bug.cgi?id=13469

           Summary: fscache crash
           Product: File System
           Version: 2.5
    Kernel Version: 2.6.30-rc8
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Other
        AssignedTo: fs_other at kernel-bugs.osdl.org
        ReportedBy: avbidder at fortytwo.ch
        Regression: No


Using Debian 2.6.30-rc8 packages on a 686.

fsc is mounted & started, reading from those files the cache starts to be
populated ok, but re-reading these files immediately creates the following
stack trace:
+++
Jun  6 18:59:58 syydelaervli kernel: [ 1107.260445] Pid: 2104, comm: kslowd Not
tainted 2.6.30-rc8-686 #1                                                       
Jun  6 18:59:59 syydelaervli kernel: [ 1107.260535] Call Trace:
Jun  6 18:59:59 syydelaervli kernel: [ 1107.260656]  [<c917c6ee>] ?
cachefiles_read_waiter+0x45/0xc0 [cachefiles]                                   
Jun  6 18:59:59 syydelaervli kernel: [ 1107.260762]  [<c011bce5>] ?
__wake_up_common+0x34/0x59                                                      
Jun  6 18:59:59 syydelaervli kernel: [ 1107.260849]  [<c011c5af>] ?
__wake_up+0x29/0x39                                                             
Jun  6 18:59:59 syydelaervli kernel: [ 1107.260941]  [<c0136869>] ?
__wake_up_bit+0x29/0x2e                                                         
Jun  6 18:59:59 syydelaervli kernel: [ 1107.261151]  [<c8abde27>] ?
ext3_truncate+0x365/0x710 [ext3]
Jun  6 18:59:59 syydelaervli kernel: [ 1107.261262]  [<c017b13b>] ?
vmtruncate+0xf6/0x119
Jun  6 18:59:59 syydelaervli kernel: [ 1107.261343]  [<c019c011>] ?
inode_setattr+0x4b/0x11b
Jun  6 18:59:59 syydelaervli kernel: [ 1107.261496]  [<c8abbccd>] ?
ext3_setattr+0x156/0x1ab [ext3]
Jun  6 18:59:59 syydelaervli kernel: [ 1107.261583]  [<c019c233>] ?
notify_change+0x152/0x28f
Jun  6 18:59:59 syydelaervli kernel: [ 1107.261674]  [<c01a8000>] ?
block_read_full_page+0x233/0x270
Jun  6 18:59:59 syydelaervli kernel: [ 1107.261778]  [<c917a2bc>] ?
cachefiles_attr_changed+0xfb/0x156 [cachefiles]
Jun  6 18:59:59 syydelaervli kernel: [ 1107.261933]  [<c8ff6f6c>] ?
fscache_lookup_object+0xe2/0xf4 [fscache]
Jun  6 18:59:59 syydelaervli kernel: [ 1107.262052]  [<c8ff7357>] ?
fscache_object_slow_work_execute+0x187/0x567 [fscache]
Jun  6 18:59:59 syydelaervli kernel: [ 1107.262160]  [<c0169f55>] ?
slow_work_thread+0x264/0x3f3
Jun  6 18:59:59 syydelaervli kernel: [ 1107.262248]  [<c01368ca>] ?
autoremove_wake_function+0x0/0x2d
Jun  6 18:59:59 syydelaervli kernel: [ 1107.262331]  [<c0169cf1>] ?
slow_work_thread+0x0/0x3f3
Jun  6 18:59:59 syydelaervli kernel: [ 1107.262412]  [<c01365dc>] ?
kthread+0x42/0x67
Jun  6 18:59:59 syydelaervli kernel: [ 1107.262490]  [<c013659a>] ?
kthread+0x0/0x67
Jun  6 18:59:59 syydelaervli kernel: [ 1107.262584]  [<c0103ab7>] ?
kernel_thread_helper+0x7/0x10
Jun  6 18:59:59 syydelaervli kernel: [ 1107.262777] CacheFiles: I/O Error:
Readpage failed on backing file 40000830
Jun  6 18:59:59 syydelaervli kernel: [ 1107.262862] FS-Cache: Cache cachefiles
stopped due to I/O error
+++

(this one if using nfs3, but nfs4 behaves the same.)

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