[uml-devel] creash of 2.6.7-bb6

[uml-devel] creash of 2.6.7-bb6

[Sebastian]

----------------------------------
Badness in sk_del_node_init at include/net/sock.h:333
Call Trace:  [<a01244d8>] __unix_remove_socket+0x68/0x70
 [<a0124824>] unix_release_sock+0x14/0x1f0
 [<a002c9ec>] local_bh_enable+0x1c/0x80
 [<a0019560>] do_buffer_op+0x0/0x150
 [<a0124ca7>] unix_release+0x27/0x30

    [<a00dd3ea>] sock_release+0x5a/0x70
 [<a00ddd14>] sock_close+0x34/0x50
 [<a00dea83>] sys_shutdown+0x43/0x50
 [<a005a96e>] __fput+0xbe/0xd0
 [<a00591f7>] filp_close+0x57/0x90
 [<a0059282>] sys_close+0x52/0x70

    [<a0018e6a>] execute_syscall_skas+0xaa/0xb0
 [<a0014832>] unblock_signals+0x12/0x20
 [<a0015359>] record_syscall_start+0x59/0x70
 [<a0018eab>] handle_syscall+0x3b/0x90
 [<a0017caf>] handle_trap+0x2f/0x140
 [<a00182df>] save_registers+0x3f/0x70

    [<a00180ca>] userspace+0x15a/0x1d0
 [<a0018b20>] fork_handler+0x0/0xb0
 [<a0018bc1>] fork_handler+0xa1/0xb0
 [<a0018b20>] fork_handler+0x0/0xb0
 [<a0018aed>] new_thread_proc+0x1d/0x30

KERNEL: assertion (!atomic_read(&sk->sk_wmem_alloc)) failed at 
net/unix/af_unix.c (333)
KERNEL: assertion (!atomic_read(&sk->sk_wmem_alloc)) failed at 
net/unix/af_unix.c (333)
KERNEL: assertion (!atomic_read(&sk->sk_wmem_alloc)) failed at 
net/unix/af_unix.c (333)
KERNEL: assertion (!atomic_read(&sk->sk_wmem_alloc)) failed at 
net/unix/af_unix.c (333)
KERNEL: assertion (sk_unhashed(sk)) failed at net/unix/af_unix.c (334)
-------------------------------------


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Re: [uml-devel] creash of 2.6.7-bb6

[BlaisorBlade]

Hmmm, thanks for it, but did the kernel actually crash (it seems a debug 
message rather than a crash one)? And what was the machine doing in that 
moment?

The only UML function in the trace is do_buffer_op - could it have some bugs?
 
> Badness in sk_del_node_init at include/net/sock.h:333
> Call Trace:  [<a01244d8>] __unix_remove_socket+0x68/0x70
>  [<a0124824>] unix_release_sock+0x14/0x1f0
>  [<a002c9ec>] local_bh_enable+0x1c/0x80
>  [<a0019560>] do_buffer_op+0x0/0x150
>  [<a0124ca7>] unix_release+0x27/0x30
> 
>     [<a00dd3ea>] sock_release+0x5a/0x70
>  [<a00ddd14>] sock_close+0x34/0x50
>  [<a00dea83>] sys_shutdown+0x43/0x50
>  [<a005a96e>] __fput+0xbe/0xd0
>  [<a00591f7>] filp_close+0x57/0x90
>  [<a0059282>] sys_close+0x52/0x70
> 
>     [<a0018e6a>] execute_syscall_skas+0xaa/0xb0
>  [<a0014832>] unblock_signals+0x12/0x20
>  [<a0015359>] record_syscall_start+0x59/0x70
>  [<a0018eab>] handle_syscall+0x3b/0x90
>  [<a0017caf>] handle_trap+0x2f/0x140
>  [<a00182df>] save_registers+0x3f/0x70
> 
>     [<a00180ca>] userspace+0x15a/0x1d0
>  [<a0018b20>] fork_handler+0x0/0xb0
>  [<a0018bc1>] fork_handler+0xa1/0xb0
>  [<a0018b20>] fork_handler+0x0/0xb0
>  [<a0018aed>] new_thread_proc+0x1d/0x30
> 
> KERNEL: assertion (!atomic_read(&sk->sk_wmem_alloc)) failed at 
> net/unix/af_unix.c (333)
> KERNEL: assertion (!atomic_read(&sk->sk_wmem_alloc)) failed at 
> net/unix/af_unix.c (333)
> KERNEL: assertion (!atomic_read(&sk->sk_wmem_alloc)) failed at 
> net/unix/af_unix.c (333)
> KERNEL: assertion (!atomic_read(&sk->sk_wmem_alloc)) failed at 
> net/unix/af_unix.c (333)
> KERNEL: assertion (sk_unhashed(sk)) failed at net/unix/af_unix.c (334)
-- 
Paolo Giarrusso, aka Blaisorblade
Linux registered user n. 292729


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