[openib-general] ib_local_sa workqueue creation crash with ofed 1.2 + sles9sp3

[Steve Wise]

It hit this:

struct workqueue_struct *__create_workqueue(const char *name,
                                            int singlethread)
{
        int cpu, destroy = 0;
        struct workqueue_struct *wq;
        struct task_struct *p;

        BUG_ON(strlen(name) > 10);



On Thu, 2007-01-18 at 16:01 -0600, Steve Wise wrote:
> Loading ib_local_sa crashes on sles9sp3 with a BUG() trap.  Is this a
> known issue?
> 
> ----------- [cut here ] --------- [please bite here ] ---------
> Kernel BUG at workqueue:308
> invalid operand: 0000 [1] SMP
> CPU 0
> Pid: 7309, comm: modprobe Tainted: GF  U   (2.6.5-7.244-smp SLES9_SP3_BRANCH-200512121832250000)
> RIP: 0010:[<ffffffff8014f9c1>] <ffffffff8014f9c1>{__create_workqueue+33}
> RSP: 0000:000001003f4f7d38  EFLAGS: 00010202
> RAX: 000000000000000b RBX: ffffffffa02b4e69 RCX: 0000000000000bb8
> RDX: 0000000000000bb8 RSI: 0000000000000001 RDI: ffffffffa02b4e69
> RBP: 0000000000000001 R08: 000000000000003d R09: 0000000000000000
> R10: 00000000000493e0 R11: 0000000000000001 R12: ffffffff803e3fc0
> R13: 000000000000000a R14: ffffffff803e3fc0 R15: 0000000000000000
> FS:  0000002a95894b00(0000) GS:ffffffff8057cc00(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: 0000000000539ccf CR3: 0000000000101000 CR4: 00000000000006e0
> Process modprobe (pid: 7309, threadinfo 000001003f4f6000, task 000001001fcdc9e0)
> Stack: 000001003fe3f350 ffffffff803e4020 ffffffffa02b7180 ffffffff803e3fc0
>        000000000000000a ffffffff803e3fc0 ffffffffa02b2300 ffffffffa02bd08f
>        ffffffff803e4020 ffffffff8015d4dd
> Call Trace:<ffffffffa02bd08f>{:ib_local_sa:sa_db_init+143} <ffffffff8015d4dd>{sys_init_module+6589}
>        <ffffffff80166d5b>{generic_file_read+187} <ffffffffa02bd000>{:ib_local_sa:sa_db_init+0}
>        <ffffffff8018da34>{vfs_read+244} <ffffffff8018dc8d>{sys_read+157}
>        <ffffffff80110694>{system_call+124}
> 
> Code: 0f 0b 17 66 38 80 ff ff ff ff 34 01 66 66 90 48 8b 3d 61 50
> RIP <ffffffff8014f9c1>{__create_workqueue+33} RSP <000001003f4f7d38>
>