[Tipc-discussion] status of UDP

[Mark H. <ma...@os...>]

Jon,

What is the status of TIPC UDP?  Has it been tested very much?  I tried
loading tipc with UDP today and got lots of debug stack traces.

For instance I loaded tipc with:

insmod ./tipc.ko udp0=1 node=17 netid=1000

And started seeing these:

TIPC:  Compiled May 26 2004 07:29:42
TIPC:  Own node address <1.1.17>, network identity 1000
Debug: sleeping function called from invalid context at mm/slab.c:1967
in_atomic():1, irqs_disabled():0
Call Trace:
 [<c011cce9>] __might_sleep+0x99/0xb0
 [<c014951f>] kmem_cache_alloc+0x21f/0x230
 [<c036c70e>] sock_alloc_inode+0x1e/0x80
 [<c017f9ac>] alloc_inode+0x1c/0x140
 [<c018055d>] new_inode+0x1d/0xd0
 [<c037e742>] rtnl_lock+0x22/0x40
 [<c036ca36>] sock_alloc+0x16/0x60
 [<c036d846>] sock_create+0x86/0x230
 [<f8e5e9ec>] enable_bearer+0xac/0x470 [tipc]
 [<f8e464f7>] tipc_enable_bearer+0x227/0x4b0 [tipc]
 [<f8e5ee88>] udp_media_start+0xc8/0xd0 [tipc]
 [<f8e6b099>] tipc_init+0x99/0xa7 [tipc]
 [<c013a7b9>] sys_init_module+0x179/0x2f0
 [<c0105373>] syscall_call+0x7/0xb
                                   
TIPC:  TIPC/UDP: Multicast listener socket on 225.0.1.232:55555
TIPC:  TIPC/UDP: Unicast listener socket on port 55555
TIPC:  Bearer instance <udp:udp0> enabled, broadcast domain <1.0.0>
[root@cl017 root]# Debug: sleeping function called from invalid context at net/core/sock.c:1150
in_atomic():1, irqs_disabled():0
Call Trace:
 [<c011cce9>] __might_sleep+0x99/0xb0
 [<c0370632>] lock_sock+0x22/0xc0
 [<c0388d78>] ip_route_output_flow+0x18/0x30
 [<c03b01c4>] udp_sendmsg+0x264/0x800
 [<c0390360>] ip_finish_output2+0x0/0x1e0
 [<c03b950b>] inet_sendmsg+0x4b/0x60
 [<c036cbde>] sock_sendmsg+0x8e/0xb0
 [<c0119584>] recalc_task_prio+0xb4/0x1f0
 [<c01338cb>] kernel_text_address+0x3b/0x50
 [<c01193f8>] kernel_map_pages+0x28/0x64
 [<f8e5a190>] k_signal+0x60/0x170 [tipc]
 [<f8e5a190>] k_signal+0x60/0x170 [tipc]
 [<f8e5e734>] send_msg+0x94/0xa0 [tipc]
 [<f8e398f3>] cfg_send_req+0x1e3/0x230 [tipc]
 [<f8e5a34c>] timeout_receiver+0xac/0x110 [tipc]
 [<f8e5a11f>] receive_signal+0x14f/0x160 [tipc]
 [<c011abc1>] scheduler_tick+0x111/0x690
 [<c0124f33>] tasklet_action+0x73/0xc0
 [<c0124c38>] __do_softirq+0xb8/0xc0
 [<c0124c75>] do_softirq+0x35/0x40
 [<c011526d>] smp_apic_timer_interrupt+0xdd/0x150
 [<c0103040>] default_idle+0x0/0x40
 [<c0105d62>] apic_timer_interrupt+0x1a/0x20
 [<c0103040>] default_idle+0x0/0x40
 [<c0103070>] default_idle+0x30/0x40
 [<c0103106>] cpu_idle+0x46/0x50
 [<c0120561>] printk+0x1c1/0x270
                                 
Debug: sleeping function called from invalid context at net/core/sock.c:1150
in_atomic():1, irqs_disabled():0
Call Trace:
 [<c011cce9>] __might_sleep+0x99/0xb0
 [<c0370632>] lock_sock+0x22/0xc0
 [<c0388d78>] ip_route_output_flow+0x18/0x30
 [<c03b01c4>] udp_sendmsg+0x264/0x800
 [<c0370c57>] __kfree_skb+0x77/0xf0
 [<c03b950b>] inet_sendmsg+0x4b/0x60
 [<c036cbde>] sock_sendmsg+0x8e/0xb0
 [<c0119584>] recalc_task_prio+0xb4/0x1f0
 [<c0119c1a>] wake_up_state+0x1a/0x20
 [<c012ac22>] signal_wake_up+0x32/0x50
 [<f8e5a190>] k_signal+0x60/0x170 [tipc]
 [<f8e5a190>] k_signal+0x60/0x170 [tipc]
 [<f8e5e734>] send_msg+0x94/0xa0 [tipc]
 [<f8e398f3>] cfg_send_req+0x1e3/0x230 [tipc]
 [<f8e5a34c>] timeout_receiver+0xac/0x110 [tipc]
 [<f8e5a11f>] receive_signal+0x14f/0x160 [tipc]
 [<c011abc1>] scheduler_tick+0x111/0x690
 [<c0124f33>] tasklet_action+0x73/0xc0
 [<c0124c38>] __do_softirq+0xb8/0xc0
 [<c0124c75>] do_softirq+0x35/0x40
 [<c011526d>] smp_apic_timer_interrupt+0xdd/0x150
 [<c0103040>] default_idle+0x0/0x40
 [<c0105d62>] apic_timer_interrupt+0x1a/0x20
 [<c0103040>] default_idle+0x0/0x40
 [<c0103070>] default_idle+0x30/0x40
 [<c0103106>] cpu_idle+0x46/0x50
 [<c0120561>] printk+0x1c1/0x270
                                 
rmmod tipc
TIPC:  Deregistered

-- 
Mark Haverkamp <ma...@os...>