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    Subject2.6.27-rc7-sha1: EIP at proc_sys_compare+0x36/0x50
    Gentlemen, this happened while script was slowly rebuilding 300+ configs
    sequentially. Very little recompling activity itself, much seeking.

    This is first time I see this. No debugging was on, no preemption.

    Version: 2.6.27-rc7-c0f4d6d4b14a75a341d972ff73fb9740e1ceb634 +
    atl1 fixlet + "notes" kobject fixlet, but they don't matter.


    ffffffff802bc690 <proc_sys_compare>:
    ffffffff802bc690: 48 83 ec 08 sub $0x8,%rsp
    ffffffff802bc694: 8b 46 04 mov 0x4(%rsi),%eax
    ffffffff802bc697: 3b 42 04 cmp 0x4(%rdx),%eax
    ffffffff802bc69a: 49 89 f0 mov %rsi,%r8
    ffffffff802bc69d: 74 11 je ffffffff802bc6b0 <proc_sys_compare+0x20>
    ffffffff802bc69f: b8 01 00 00 00 mov $0x1,%eax
    ffffffff802bc6a4: 48 83 c4 08 add $0x8,%rsp
    ffffffff802bc6a8: c3 retq
    ffffffff802bc6a9: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
    ffffffff802bc6b0: 48 8b 76 08 mov 0x8(%rsi),%rsi
    ffffffff802bc6b4: 48 8b 7a 08 mov 0x8(%rdx),%rdi
    ffffffff802bc6b8: 89 c1 mov %eax,%ecx
    ffffffff802bc6ba: fc cld
    ffffffff802bc6bb: 48 39 c9 cmp %rcx,%rcx
    ffffffff802bc6be: f3 a6 repz cmpsb %es:(%rdi),%ds:(%rsi)
    ffffffff802bc6c0: 75 dd jne ffffffff802bc69f <proc_sys_compare+0xf>
    ffffffff802bc6c2: 49 8b 40 e0 mov -0x20(%r8),%rax
    ffffffff802bc6c6: ===> 48 8b 78 f0 mov -0x10(%rax),%rdi <===
    ffffffff802bc6ca: e8 71 96 f7 ff callq ffffffff80235d40 <sysctl_is_seen>
    ffffffff802bc6cf: 85 c0 test %eax,%eax
    ffffffff802bc6d1: 0f 94 c0 sete %al
    ffffffff802bc6d4: 48 83 c4 08 add $0x8,%rsp
    ffffffff802bc6d8: 0f b6 c0 movzbl %al,%eax
    ffffffff802bc6db: c3 retq
    ffffffff802bc6dc: 0f 1f 40 00 nopl 0x0(%rax)


    [16526.029537] BUG: unable to handle kernel paging request at fffffffffffffff0
    [16526.029643] IP: [<ffffffff802bc6c6>] proc_sys_compare+0x36/0x50
    [16526.029709] PGD 203067 PUD 204067 PMD 0
    [16526.029769] Oops: 0000 [1] SMP
    [16526.029824] CPU 1
    [16526.029872] Modules linked in: af_packet iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack xt_tcpudp iptable_filter ip_tables x_tables ext2 nls_utf8 ntfs fuse sr_mod cdrom
    [16526.030079] Pid: 20385, comm: sh Not tainted 2.6.27-rc7 #1
    [16526.030140] RIP: 0010:[<ffffffff802bc6c6>] [<ffffffff802bc6c6>] proc_sys_compare+0x36/0x50
    [16526.030246] RSP: 0018:ffff880108929c58 EFLAGS: 00010246
    [16526.030306] RAX: 0000000000000000 RBX: ffff88005246e000 RCX: 0000000000000000
    [16526.030374] RDX: ffff880108929d28 RSI: ffff88005246e0af RDI: ffff88017b4fb01c
    [16526.030442] RBP: ffff88005246e018 R08: ffff88005246e030 R09: ffff88017b4fb011
    [16526.030509] R10: 0000000000000000 R11: 0000000000000005 R12: 0000000032fdb346
    [16526.030577] R13: ffff88005246e0c8 R14: ffff880108929d28 R15: 000000000000000b
    [16526.030645] FS: 00002b014ad9af40(0000) GS:ffff88017f809680(0000) knlGS:0000000000000000
    [16526.030748] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
    [16526.030811] CR2: fffffffffffffff0 CR3: 000000006a2d6000 CR4: 00000000000006e0
    [16526.030879] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    [16526.030946] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    [16526.031014] Process sh (pid: 20385, threadinfo ffff880108928000, task ffff88017f8bab80)
    [16526.031118] Stack: 0000000000000000 ffffffff80293242 0000000080555ec0 0000000b7f429320
    [16526.031233] ffff88017b4fb011 ffff880108929d28 ffff88017b4fb01c ffff880108929e68
    [16526.031345] ffff880108929d28 ffff880108929d38 ffff88017b4fb000 ffffffff8028900c
    [16526.031419] Call Trace:
    [16526.031506] [<ffffffff80293242>] ? __d_lookup+0xe2/0x120
    [16526.031568] [<ffffffff8028900c>] ? do_lookup+0x3c/0x220
    [16526.031629] [<ffffffff8028a895>] ? __link_path_walk+0x815/0xd90
    [16526.031693] [<ffffffff80266ce7>] ? __do_fault+0x1b7/0x400
    [16526.031755] [<ffffffff8028ae64>] ? path_walk+0x54/0xb0
    [16526.033334] [<ffffffff8028af8a>] ? do_path_lookup+0x7a/0x150
    [16526.033397] [<ffffffff8028bdca>] ? __path_lookup_intent_open+0x6a/0xd0
    [16526.033464] [<ffffffff8028c082>] ? do_filp_open+0xc2/0x820
    [16526.033526] [<ffffffff80296bbf>] ? alloc_fd+0x3f/0x130
    [16526.033587] [<ffffffff8027ed88>] ? do_sys_open+0x58/0xb0
    [16526.033648] [<ffffffff8020b65b>] ? system_call_fastpath+0x16/0x1b
    [16526.033711]
    [16526.033754]
    [16526.033797] Code: 89 f0 74 11 b8 01 00 00 00 48 83 c4 08 c3 0f 1f 80 00 00 00 00 48 8b 76 08 48 8b 7a 08 89 c1 fc 48 39 c9 f3 a6 75 dd 49 8b 40 e0 <48> 8b 78 f0 e8 71 96 f7 ff 85 c0 0f 94 c0 48 83 c4 08 0f b6 c0
    [16526.034186] RIP [<ffffffff802bc6c6>] proc_sys_compare+0x36/0x50
    [16526.034251] RSP <ffff880108929c58>
    [16526.034301] CR2: fffffffffffffff0
    [16526.034622] ---[ end trace ca38d5cc981185f5 ]---


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