kernel oops with blcr-0.7.3

From: Dominique DELANDE (Dominique.Delande_at_spectro.jussieu.fr)
Date: Wed Oct 29 2008 - 02:11:40 PST

  • Next message: Paul H. Hargrove: "Re: kernel oops with blcr-0.7.3"
    	
    	Dear Sir or Madam,
    
    I am using blcr-0.7.3 to checkpoint MPI jobs, compiled either
    with MVAPICH2-1.2rc2 or OpenMPI-1.3b1. In both cases,
    checkpointing is apparently working, but restart ends
    with a kernel oops on each node running a MPI process (see below).
    The kernel oops is similar when using OpenMPI or MVAPICH2, I thus 
    suspect that the problem comes from blcr.
    I am running Linux Fedora 8 with a 2.6.26 Fedora x86_64 kernel.
    Each node has two Dual Core AMD Opteron Processors 285 with 8 GBytes
    of memory, Infiniband DDR, and the OFED-1.4-rc3 stack.
    
    Any help will be appreciated.
    
    Best regards
    
    Dominique Delande
    
    *******************************
    
    Ouput of 'uname -a':
    Linux node11.cluster.local 2.6.26.6-49.fc8 #1 SMP Fri Oct 17 15:33:32 
    EDT 2008 x86_64 x86_64 x86_64 GNU/Linux
    
    Example:
    
    $ cr_restart context.20722
      node11 kernel: Oops: 0002 [1] SMP
      node11 kernel: Code: 48 8b 11 31 c0 c3 48 83 e9 07 eb 00 31 d2 48 c7 
    c0 f2 ff ff ff c3 90 90 90 90 90 90 90 90 90 90 48 89 f8 89 d1 c1 e9 03 
    83 e2 07 <f3> 48 a5 89 d1 f3 a4 c3 66 66 66 66 2e 0f 1f 84 00 00 00 00 00
      node11 kernel: CR2: 0000000000000000
    
    dmesg output is:
    
    BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
    IP: [<ffffffff81140d1b>] memcpy_c+0xb/0x20
    PGD 22e4ed067 PUD 22dccf067 PMD 0
    Oops: 0002 [1] SMP
    CPU 1
    Modules linked in: blcr(U) blcr_vmadump(U) blcr_imports(U) nfs lockd 
    nfs_acl sunrpc rdma_ucm(U) ib_sdp(U) rdma_cm(U) iw_cm(U) ib_addr(U) 
    ib_ipoib(U) ib_cm(U) ib_sa(U) ipv6 ib_uverbs(U) ib_umad(U) mlx4_ib(U) 
    mlx4_core(U) dm_mirror dm_log dm_multipath dm_mod cfi_cmdset_0002 
    cfi_util tg3 jedec_probe cfi_probe ib_mthca(U) gen_probe ib_mad(U) 
    ck804xrom ib_core(U) mtd k8temp i2c_nforce2 i2c_core pcspkr chipreg 
    hwmon shpchp map_funcs sr_mod cdrom sg pata_amd ata_generic pata_acpi 
    sata_nv libata sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd 
    ehci_hcd [last unloaded: scsi_wait_scan]
    Pid: 20789, comm: cr_restart Not tainted 2.6.26.6-49.fc8 #1
    RIP: 0010:[<ffffffff81140d1b>]  [<ffffffff81140d1b>] memcpy_c+0xb/0x20
    RSP: 0018:ffff81022e4c7770  EFLAGS: 00010246
    RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000000040
    RDX: 0000000000000000 RSI: ffff81022e4c7788 RDI: 0000000000000000
    RBP: ffff81022e4c7b58 R08: 0000000000000000 R09: 0000000000000001
    R10: 0000000000000000 R11: 0000000000000001 R12: ffff81022e4c7788
    R13: ffff810128c2a240 R14: 0000000000000000 R15: ffffffffffffffff
    FS:  00007f4cabcdc6f0(0000) GS:ffff81022fa25300(0000) knlGS:0000000055788b90
    CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    CR2: 0000000000000000 CR3: 000000012e96b000 CR4: 00000000000006e0
    DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    Process cr_restart (pid: 20789, threadinfo ffff81022e4c6000, task 
    ffff81022e4596a0)
    Stack:  ffffffffa0334524 0000000000000000 0000000000000000 000000000000037f
      0000000000000000 0000000000000000 0000ffff00009fc0 0000000000000000
      0000000000000000 0000000000000000 0000000000000000 0000000000000000
    Call Trace:
      [<ffffffffa0334524>] ? :blcr_vmadump:vmadump_restore_cpu+0x197/0x5b4
      [<ffffffff810aa7a0>] ? do_sync_read+0xe2/0x126
      [<ffffffff810492dc>] ? autoremove_wake_function+0x0/0x38
      [<ffffffff8100c12a>] ? system_call_after_swapgs+0x8a/0x8f
      [<ffffffffa0332048>] ? :blcr_vmadump:read_user+0x48/0x72
      [<ffffffffa0333846>] :blcr_vmadump:vmadump_thaw_proc+0x169/0xb6b
      [<ffffffff8102fb8d>] ? hrtick_set+0xe0/0xe9
      [<ffffffff8129748d>] ? thread_return+0x7e/0xab
      [<ffffffffa03455dc>] :blcr:cr_thaw_threads+0x18d/0x1f1
      [<ffffffff810492dc>] ? autoremove_wake_function+0x0/0x38
      [<ffffffffa0343413>] :blcr:cr_rstrt_child+0xa1e/0x1ca2
      [<ffffffffa033e0b8>] ? :blcr:ctrl_ioctl+0x0/0x1bc
      [<ffffffffa033e22f>] :blcr:ctrl_ioctl+0x177/0x1bc
      [<ffffffff810e8aae>] proc_reg_unlocked_ioctl+0xa6/0xc6
      [<ffffffff810b6aaa>] vfs_ioctl+0x2a/0x77
      [<ffffffff810b6d45>] do_vfs_ioctl+0x24e/0x26b
      [<ffffffff8100a92a>] ? __switch_to+0xd8/0x376
      [<ffffffff810b6db9>] sys_ioctl+0x57/0x7a
      [<ffffffff8100c12a>] system_call_after_swapgs+0x8a/0x8f
    
    
    Code: 48 8b 11 31 c0 c3 48 83 e9 07 eb 00 31 d2 48 c7 c0 f2 ff ff ff c3 
    90 90 90 90 90 90 90 90 90 90 48 89 f8 89 d1 c1 e9 03 83 e2 07 <f3> 48 
    a5 89 d1 f3 a4 c3 66 66 66 66 2e 0f 1f 84 00 00 00 00 00
    RIP  [<ffffffff81140d1b>] memcpy_c+0xb/0x20
      RSP <ffff81022e4c7770>
    CR2: 0000000000000000
    ---[ end trace 6c22587b3026d5be ]---
    blcr: rstrt_watchdog: 'cr_restart' (tgid/pid 20788/20789) exited with 
    signal 9 during restart
    
    
    -- 
        Dominique Delande (Dominique.Delande@spectro.jussieu.fr)
        Laboratoire Kastler-Brossel - Case 74 - Universite P. et M. Curie
        4, place Jussieu, F-75252 Paris Cedex 05, FRANCE
        Phone : 33 (0)1 44 27 27 97 - Fax : 33 (0)1 44 27 38 45
        Acces : Pyramide de la Scolarite Paris VI - 1er etage - Bureau 214
    

  • Next message: Paul H. Hargrove: "Re: kernel oops with blcr-0.7.3"