Re: Badness in local_bh_enable at kernel/softirq.c:136

From: Gerard H. Pille (ghp_at_skynet.be)
Date: 08/04/04

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    Date: Wed, 04 Aug 2004 14:05:03 +0200
    
    

    Gerard H. Pille wrote:
    > Hallo,
    >
    > RaLink has written a kernel module as a driver for the WiFi cards
    > (mine is a miniPCI from MSI) using their chipset RT2560. People using
    > their module (source available at
    > http://www.ralinktech.com.tw/drivers/Linux/RT2500-Linux-STA-1-4-0-0.zip,
    > but not GPL) on kernels 2.6.6 and upwards, experience very bad
    > performance, maybe because of tons of warnings found in
    > /var/log/messages, as in subject eg:
    >
    > Badness in local_bh_enable at kernel/softirq.c:136
    > Call Trace:
    > [<c011bc42>] local_bh_enable+0x82/0x90
    > [<c02d2bd9>] dev_queue_xmit+0x219/0x2b0
    > [<c02e8710>] ip_finish_output+0xe0/0x230
    > [<c02e8986>] ip_mc_output+0x126/0x1a0
    > [<c02e98a6>] ip_generic_getfrag+0x46/0xb0
    > [<c02ea699>] ip_push_pending_frames+0x2b9/0x430
    > [<c02e9e86>] ip_append_data+0x576/0x730
    > [<c0306b02>] udp_push_pending_frames+0x142/0x240
    > [<c0306feb>] udp_sendmsg+0x3ab/0x6e0
    > [<c030ef7b>] inet_sendmsg+0x4b/0x60
    > [<c02ca862>] sock_sendmsg+0x92/0xb0
    > [<c0135a51>] buffered_rmqueue+0xf1/0x1b0
    > [<c01ebb10>] copy_from_user+0x50/0x80
    > [<c02ca305>] move_addr_to_kernel+0x35/0x50
    > [<c02cbd68>] sys_sendto+0xe8/0x110
    > [<c01ebb10>] copy_from_user+0x50/0x80
    > [<c02cc653>] sys_socketcall+0x173/0x240
    > [<c010403f>] syscall_call+0x7/0xb
    >
    > I would like to know if this warning is caused by an error in the
    > driver, and if so, what we should be looking for.
    >
    > Thanks for any advice,
    >
    > Gerard
    >
    we just had to remove the WARN_ON on that line, and everything runs smoothly

    it would still be interesting to know what is wrong


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