#149 CFS failover oops at unlock_kernel

[Roger Tsang]

<4>------------[ cut here ]------------
<1>kernel BUG at <bad filename>:57323!
<1>invalid operand: 0000 [#1]
<4>SMP
<4>Modules linked in: tun softdog ipt_REJECT ipt_state ipt_multiport iptable_filter ipt_MASQUERADE iptable_nat ip_conntrack ip_tables uhci_hcd ehci_hcd usbcore drbd via_rhine sk98lin r8169 forcedeth dm_mod
<4>CPU: 0
<4>EIP: 0060:[<c044cb70>] Not tainted VLI
<4>EFLAGS: 00010286 (2.6.11-ssi5.31)
<4>EIP is at unlock_kernel+0x30/0x34
<4>eax: ffffffff ebx: d9800e40 ecx: 00000000 edx: f62668b0
<4>esi: f622c000 edi: f622c340 ebp: cb463d98 esp: cb463d98
<4>ds: 007b es: 007b ss: 0068
<4>Process mount (pid: 120056, threadinfo=cb462000 task=f62668b0)
<4>Stack: cb463e00 c01aafbf f7fff680 000000d0 f6f6a000 cb463dc4 c031f816 cb463e60
<4> 00000000 c049884a cb463ddc cb463dec c0199654 cb463e60 00000020 c0498848
<4> e06ec94c 00001000 00000000 cb463e00 00000001 d9800e40 00000000 d9800e40
<4>Call Trace:
<4> [<c0104eff>] show_stack+0x7f/0xa0
<4> [<c01050a6>] show_registers+0x166/0x230
<4> [<c0105446>] die+0xf6/0x1c0
<4> [<c0105595>] do_trap+0x85/0xd0
[0]more>
Only 'q' or 'Q' are processed at more prompt, input ignored
<4> [<c0105875>] do_invalid_op+0xb5/0xc0
<4> [<c0104b5f>] error_code+0x2b/0x30
<4> [<c01aafbf>] ext3_fill_super+0x7f/0xc70
<4> [<c016813b>] get_sb_bdev+0x1db/0x460
<4> [<c01ac8ee>] ext3_get_sb+0x2e/0x30
<4> [<c0305bd3>] cfs_do_kern_remount+0xa3/0x14e
<4> [<c0305b22>] cfs_do_remount+0x52/0x60
<4> [<c0305a58>] cfs_remount+0xb8/0x130
<4> [<c027e57e>] ssisys_cfs_remount+0x7e/0xb0
<4> [<c027bd7b>] do_ssisys+0x9b/0x1f0
<4> [<c027bf1e>] sys_ssisys+0x4e/0x70
<4> [<c0103fc5>] sysenter_past_esp+0x52/0x75
<4>Code: ff 21 e0 8b 10 89 e5 8b 42 14 85 c0 78 1d 48 85 c0 89 42 14 79 13 c7 05 70 00 5b c0 00 00 00 00 f0 ff 05 68 00 5b c0 7e 33 c9 c3 <0f> 0b eb df 8d 05 68 00 5b c0 e8 5d e6 ff ff e9 54 ff ff ff 8d
<4>

cfs_remount() missing BKL for get_sb().

[Roger Tsang]

Logged In: YES
user_id=1246761
Originator: YES

Fixed in the latest checkin.