[openib-general] [rds]: there is a kernel oops while loading the RDS module in kernel 2.6.11

[Dotan Barak]

when loading the rds module, there is a kernel oops.

here are the machine props:
---------------------------------------

Host Architecture : x86_64
Linux Distribution: Fedora Core release 4 (Stentz)
Kernel Version    : 2.6.11-1.1369_FC4smp
Memory size       : 4102172 kB
Driver Version    : openib_gen2-20060430-0800 (REV=6741)
HCA ID(s)         : mthca0
HCA model(s)      : 25218
FW version(s)     : 5.1.400
Board(s)          : MT_0150000001

here is the dump from the /var/log/messages:
--------------------------------------------------------------

Apr 30 11:21:05 sw084 kernel: ----------- [cut here ] --------- [please bite here ] ---------
Apr 30 11:21:05 sw084 kernel: Kernel BUG at "kernel/workqueue.c":311
Apr 30 11:21:05 sw084 kernel: invalid operand: 0000 [1] SMP
Apr 30 11:21:05 sw084 kernel: CPU 1
Apr 30 11:21:05 sw084 kernel: Modules linked in: ib_local_sa(U) findex(U) ib_ipoib(U) ib_sa(U) ib_uverbs(U) ib_umad(U) ib_mthca(U) ib_mad(U)
 ib_core(U) mst_pciconf(U) mst_pci(U) nfsd exportfs md5 ipv6 parport_pc lp parport autofs4 nfs lockd rfcomm l2cap bluetooth sunrpc pcmcia ye
nta_socket rsrc_nonstatic pcmcia_core dm_mod video button battery ac ohci_hcd ehci_hcd i2c_nforce2 i2c_core tg3 ext3 jbd sata_nv libata mpts
csih mptbase sd_mod scsi_mod
Apr 30 11:21:05 sw084 kernel: Pid: 31497, comm: modprobe Not tainted 2.6.11-1.1369_FC4smp
Apr 30 11:21:05 sw084 kernel: RIP: 0010:[<ffffffff8014c259>] <ffffffff8014c259>{__create_workqueue+41}
Apr 30 11:21:05 sw084 kernel: RSP: 0000:ffff81011220bf18  EFLAGS: 00010202
Apr 30 11:21:05 sw084 kernel: RAX: 000000000000000b RBX: 00000000fffffff4 RCX: 0000000000000bb8
Apr 30 11:21:05 sw084 kernel: RDX: 000000000000007f RSI: 0000000000000001 RDI: ffffffff88199d4f
Apr 30 11:21:05 sw084 kernel: RBP: ffffffff88199d4f R08: ffff81000000f300 R09: ffff81000000e000
Apr 30 11:21:05 sw084 kernel: R10: 0000000000000000 R11: ffff81013ef685a0 R12: 0000000000000001
Apr 30 11:21:05 sw084 kernel: R13: 00002aaaaaad5010 R14: ffffffff804334c0 R15: 0000000000518568
Apr 30 11:21:05 sw084 kernel: FS:  00002aaaaaad43c0(0000) GS:ffffffff80510700(0000) knlGS:00000000f7fcd6c0
Apr 30 11:21:05 sw084 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Apr 30 11:21:05 sw084 kernel: CR2: 0000003792691ec0 CR3: 0000000110009000 CR4: 00000000000006e0
Apr 30 11:21:05 sw084 kernel: Process modprobe (pid: 31497, threadinfo ffff81011220a000, task ffff8100a743e130)
Apr 30 11:21:05 sw084 kernel: Stack: ffffffff80433140 00000000fffffff4 000000000003384b ffffffff8819c480
Apr 30 11:21:05 sw084 kernel:        00002aaaaaad5010 ffffffff8819f094 ffffffff80433500 ffffffff80157af4
Apr 30 11:21:05 sw084 kernel:        0000000000000000 0000000000517d80
Apr 30 11:21:05 sw084 kernel: Call Trace:<ffffffff8819f094>{:ib_local_sa:sa_db_init+148} <ffffffff80157af4>{sys_init_module+292}
Apr 30 11:21:05 sw084 kernel:        <ffffffff8010ebf6>{tracesys+209}
Apr 30 11:21:05 sw084 kernel:
Apr 30 11:21:05 sw084 kernel: Code: 0f 0b 50 b6 37 80 ff ff ff ff 37 01 48 8b 3d 5c 8b 2e 00 be
Apr 30 11:21:05 sw084 kernel: RIP <ffffffff8014c259>{__create_workqueue+41} RSP <ffff81011220bf18>
Apr 30 11:21:05 sw084 kernel:  <3>Debug: sleeping function called from invalid context at include/linux/rwsem.h:43
Apr 30 11:21:05 sw084 kernel: in_atomic():0, irqs_disabled():1
Apr 30 11:21:05 sw084 kernel:
Apr 30 11:21:05 sw084 kernel: Call Trace:<ffffffff8013abc5>{profile_task_exit+21} <ffffffff8013bfe2>{do_exit+34}
Apr 30 11:21:05 sw084 kernel:        <ffffffff80265a38>{do_unblank_screen+40} <ffffffff8011066d>{die+77}
Apr 30 11:21:05 sw084 kernel:        <ffffffff80111203>{do_invalid_op+163} <ffffffff8014c259>{__create_workqueue+41}
Apr 30 11:21:05 sw084 kernel:        <ffffffff8035cd8d>{thread_return+139} <ffffffff8010f5b5>{error_exit+0}
Apr 30 11:21:05 sw084 kernel:        <ffffffff8014c259>{__create_workqueue+41} <ffffffff8014c253>{__create_workqueue+35}
Apr 30 11:21:05 sw084 kernel:        <ffffffff8819f094>{:ib_local_sa:sa_db_init+148} <ffffffff80157af4>{sys_init_module+292}
Apr 30 11:21:05 sw084 kernel:        <ffffffff8010ebf6>{tracesys+209}


thanks
Dotan