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Date: Sun, 10 Jun 2007 18:27:56 +0200
From: Rolf Fokkens <rolf.fokkens@wanadoo.nl>
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Subject: [Qemu-devel] ne2000 emulation causes kernel warning/stack-dump in
 virtual Linux host
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To: qemu-devel@nongnu.org

On both qemu (no-kqemu) and qemu-kvm (no-kvm or with kvm) release 0.9.0 
the following happens when using ne2000 (default) emulation:

UG: waring at kernel/softirq.c:138/local_bh_enable() (Not tainted)
[<c042b0cf>] local_bh_enable+    /0x92
[..........] cond_resched_sof    +0x2c/0x42
[..........] release_sock+0x4f/0 9d
[..........] inet_stream_connect+0x116/0x1ff
[..........] autoremove_wake_function+0x0/0x35
[..........] sys_connect+0x82/0xad
[..........] d_instantiate+0x5c/ x60
[..........] sock_attach_fd+0x70/0xcf
[..........] selinux_file_alloc_security+0x1f/0x40
[..........] get_empty_filp+0x99/0x151
[..........] __sock_create+0x16e/0x1a8
[..........] fd_install+0x1e/0x47
[..........] sock_map_fd+0x41/0x47
[..........] sys_socketcall+0xac/0x261
[..........] syscall_call+0x7/0xb

The virtual host runs fedora 7, kernel-2.6.21-1.3194.fc7. When using 
windows-XP as a virtual host a network hang also occurs, but I have no 
details about it.

The mentioned problems (for both Linux and Windows XP) do not occur when 
using rtl8139 emulation.