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    Subject[Bug 1996] New: Bluetooth stack crashes kernel
    http://bugme.osdl.org/show_bug.cgi?id=1996

    Summary: Bluetooth stack crashes kernel
    Kernel Version: 2.6.1
    Status: NEW
    Severity: normal
    Owner: other_modules@kernel-bugs.osdl.org
    Submitter: thomas@koeller.dyndns.org


    Distribution: -
    Hardware Environment: x86 PC
    Software Environment:
    Linux sarkovy.koeller.dyndns.org 2.6.1 #1 Sat Jan 10 01:54:59 CET 2004 i686
    unknown

    Gnu C 3.3.2
    Gnu make 3.80
    util-linux 2.11z
    mount 2.11z
    module-init-tools 0.9.15-pre2
    e2fsprogs 1.33
    nfs-utils 1.0.3
    awk: cmd. line:2: (FILENAME=- FNR=1) fatal: attempt to access field -1
    Dynamic linker (ldd) 2.3.2
    Procps 3.1.9
    Net-tools 1.52
    Kbd 1.10
    Sh-utils 2.0
    Modules Loaded snd_dummy snd_via82xx snd_pcm snd_timer snd_ac97_codec
    snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd hci_usb bluetooth
    uhci_hcd usbcore cls_fw sch_htb ipt_tos ipt_mark ipt_MARK ipt_TOS
    iptable_mangle ipt_MASQUERADE iptable_nat ipt_TCPMSS ipt_pkttype ipt_length
    ipt_multiport ipt_REJECT ipt_LOG ipt_limit ipt_state iptable_filter ip_tables
    ip_conntrack_ftp ip_conntrack pppoe pppox af_packet ppp_generic slhc epic100
    mii crc32

    Problem Description:
    I am using a bluetooth adapter connected via USB. When uploading data from a
    bluetooth device the kernel frequently crashes, like so (please note that I
    wrote this down from the screen and typed it in again, so there may be errors):

    kernel BUG at include/linux/module.h:296!
    invalid operand: 0000 [#1]
    CPU: 0
    EIP: 0060:[<c8944753>] Not tainted
    EFLAGS: 00010246
    EIP is at l2cap_sock_alloc+0xc3/0xe0 [l2cap]
    eax: 00000000 ebx: c261c080 ecx: 00000000 edx: c261c080
    esi: 00000000 edi: c3a85980 ebp: c3a85980 esp: c02ddce0
    ds: 007b es: 007b ss: 0068
    Process swapper (pid: 0, threadinfo=c02dc000 task=c027fb20)
    Stack: c894a280 00000000 00000024 00000020 c02dc000 c3f359d4 c89466b8 00000000
    00000000 00000020 c8859b4c c3b00028 c3a85200 c88912d5 c3a85200 00000014
    c02ddd3c 00000014 c261cbc0 00100030 0000008a 00000000 00000004 c118a81c
    Call Trace:
    [<c89466b8>] l2cap_recv_frame+0x518/0xe00 [l2cap]
    [<c88912d5>] tcp_match+0x75/0x170 [ip_tables]
    [<c88a206b>] match+0x6b/0xd0 [ip_multiport]
    [<c889e017>] match+0x17/0x50 [ipt_state]
    [<c888f292>] ipt_do_table+0x262/0x340 [ipt_tables]
    [<c021c9c0>] ip_local_deliver_finish+0x0/0x150
    [<c01ccbd8>] get_device+0x18/0x30
    [<c88edcf7>] uhci_submit_common+0x1f7/0x2b0 [uhci_hcd]
    [<c8904d8a>] hcd_submit_urb+0xfa/0x170 [usbcore]
    [<c8905811>] usb_submit_urb+0x1d1/0x250 [usbcore]
    [<c88e1255>] hci_usb_rx_complete+0x1a5/0x6e0 [hci_usb]
    [<c89474e1>] l2cap_recv_acldata+0x181/0x340 [l2cap]
    [<c892f117>] hci_rx_task+0x1a7/0x340 [bluetooth]
    [<c011fcb6>] tasklet_action+0x46/0x70
    [<c011fad0>] do_softirq+0x90/0xa0
    [<c010b56d>] do_IRQ+0xfd/0x130
    [<c0105000>] _stext+0x0/0x60
    [<c01098a4>] common_interrupt+0x18/0x20
    [<c0105000>] _stext+0x0/0x60
    [<c0106c13>] default_idle+0x23/0x30
    [<c0106c7c>] cpu_idle+0x2c/0x40
    [<c02de707>] start_kernel+0x147/0x160
    [<c02de480>] unknown_bootoption+0x0/0x100

    Code: 0f 0b 28 01 6f 79 94 c8 eb 95 0f 0b cb 01 86 79 94 c8 e9 69
    <0>Kernel panic: Fatal exception in interrupt
    In interrupt handler - not syncing

    Steps to reproduce:
    /home/thomas $ hcid
    /home/thomas $ sdpd
    /home/thomas $ sdptool add --channel=10 OPUSH
    OBEX Object Push service registered

    At this point I start uploading images taken with a cellphone camera. The crash
    usually occurs after uploading 4..5 images.

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