I downloaded the latest openib gen2 stack and ran into kernel panic when
I run the cmpost/ucmpost example. I modified the program to continously
send and receive data in an infinite loop and killed the application
with ctrl-c.
The kernel panics pretty consistently.
I am currently running 2.6.12 version of the kernel . Log attached. I
will try
upgrading to newer kernel and see if I can reproduce it.
-Viswa
[EMAIL PROTECTED] examples]# uname -a
Linux subnetmgr4 2.6.12 #7 SMP Thu Aug 25 22:33:36 PDT 2005 i686 i686 i386
GNU/Linux
# svn info
Path: .
URL: https://openib.org/svn/gen2/trunk/src/linux-kernel
Repository UUID: 21a7a0b7-18d7-0310-8e21-e8b31bdbf5cd
Revision: 3197
Node Kind: directory
Schedule: normal
Last Changed Author: roland
Last Changed Rev: 3197
Last Changed Date: 2005-08-25 18:07:09 -0700 (Thu, 25 Aug 2005)
mgr4 login: Unable to handle kernel NULL pointer dereference at virtual address
00000068
printing eip:
c02f35c5
*pde = 365b6001
Oops: 0000 [#1]
SMP
Modules linked in: nfsd exportfs lockd autofs4 sunrpc uhci_hcd ehci_hcd
hw_random e1000 ext3 jbd sd_mod
CPU: 1
EIP: 0060:[<c02f35c5>] Not tainted VLI
EFLAGS: 00010086 (2.6.12)
EIP is at _spin_lock_irqsave+0xa/0x51
eax: 00000064 ebx: 00000286 ecx: f6607e6c edx: c036dbcc
esi: 00000064 edi: 00000064 ebp: 00000000 esp: f6607e00
ds: 007b es: 007b ss: 0068
Process lt-ucmpost (pid: 3837, threadinfo=f6606000 task=f6feb020)
Stack: 00000000 c013e410 00000000 c036dbcc c0267637 00000073 000000d0 f6607eac
f6504e80 c027390f c0351d00 00000000 f6607e6c 0c300000 00000064 f6607eac
f6504e80 c027952f 00000000 0c300000 00000064 000000d0 c0278ff2 f6504e80
Call Trace:
[<c013e410>] __alloc_pages+0x166/0x3b6
[<c0267637>] ib_get_client_data+0x14/0x54
[<c027390f>] ib_sa_path_rec_get+0x1b/0x13e
[<c027952f>] resolve_path+0x8c/0x15b
[<c0278ff2>] path_req_complete+0x0/0xf7
[<c02a9932>] rtnetlink_dump_all+0x0/0x9e
[<c02a9a6d>] rtnetlink_done+0x0/0x3
[<c02799d3>] ib_at_paths_by_route+0xc4/0xd9
[<c0278aed>] same_path_req+0x0/0x95
[<c027a53d>] ib_uat_paths_by_route+0xef/0x1c4
[<c02a9932>] rtnetlink_dump_all+0x0/0x9e
[<c02a9a6d>] rtnetlink_done+0x0/0x3
[<c027ac87>] ib_uat_write+0x96/0xa2
[<c01567fe>] vfs_write+0x108/0x10a
[<c01568ab>] sys_write+0x41/0x6a
[<c01035eb>] sysenter_past_esp+0x54/0x75
Code: c8 c3 81 78 04 ed 1e af de 75 0c f0 83 28 01 79 05 e8 94 e5 ff ff c3 0f
0b d7 00 56 60 30 c0 eb ea 56 89 c6 53 83 ec 08 9c 5b fa <81> 78 04 ad 4e ad de
75 20 f0 fe 0e 79 13 f7 c3 00 02 00 00 74
<7>ib_mthca 0000:05:00.0: Unmapping 1 pages at 80000 from ICM.
ib_mthca 0000:05:00.0: Unmapping 1 pages at bf000 from ICM.
Unable to handle kernel NULL pointer dereference at virtual address 00000005
printing eip:
c027a160
*pde = 37e01001
Oops: 0002 [#2]
SMP
Modules linked in: nfsd exportfs lockd autofs4 sunrpc uhci_hcd ehci_hcd
hw_random e1000 ext3 jbd sd_mod
CPU: 0
EIP: 0060:[<c027a160>] Not tainted VLI
EFLAGS: 00010286 (2.6.12)
EIP is at ib_uat_create_event+0x4e/0xb4
eax: 00000246 ebx: 00000005 ecx: 00000000 edx: 00000066
esi: c19fa180 edi: c19fa1b4 ebp: f72f5f00 esp: f7f4def4
ds: 007b es: 007b ss: 0068
Process ib_at_wq/0 (pid: 309, threadinfo=f7f4c000 task=f7cfca60)
Stack: 00000096 00000000 f72f5f00 00000001 f6504ed4 00000000 c027a219 00000002
00000000 ffffff92 f6504eb0 f6504ed4 00000292 c027a291 f72f5f00 ffffff92
ffffff92 c0278913 ffffff92 f6504eb0 c1a12000 c0129aad 00000000 000f41fd
Call Trace:
[<c027a219>] ib_uat_callback+0x53/0x6d
[<c027a291>] ib_uat_path_callback+0x1a/0x1f
[<c0278913>] req_comp_work+0x19/0x25
[<c0129aad>] worker_thread+0x1b0/0x23a
[<c02788fa>] req_comp_work+0x0/0x25
[<c0116fe6>] default_wake_function+0x0/0xc
[<c0116fe6>] default_wake_function+0x0/0xc
[<c01298fd>] worker_thread+0x0/0x23a
[<c012d590>] kthread+0x8a/0xb2
[<c012d506>] kthread+0x0/0xb2
[<c0101bb1>] kernel_thread_helper+0x5/0xb
Code: 84 82 00 00 00 89 c7 b9 0d 00 00 00 89 d8 f3 ab 89 6e 04 ba 66 00 00 00
8b 44 24 04 89 06 b8 fa 44 30 c0 8b 5d 08 e8 84 ea e9 ff <f0> ff 0b 0f 88 27 0d
00 00 8b 45 08 8d 56 08 83 c0 24 8b 48 04
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