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Subject[Bug 1036] New: Badness in local_bh_enable at kernel/softirq.c:113
http://bugme.osdl.org/show_bug.cgi?id=1036

Summary: Badness in local_bh_enable at kernel/softirq.c:113
Kernel Version: 2.6.0-test2
Status: NEW
Severity: high
Owner: bugme-janitors@lists.osdl.org
Submitter: janfrode@parallab.no


Distribution: gentoo
Hardware Environment: AMD AthlonXP
Software Environment:

ppp-2.4.1-r14
pptpclient-1.2.0

Problem Description:

My pptp client connections keeps dying, syslogging:

Aug 3 13:35:36 [pppd] Using interface ppp0
Aug 3 13:35:36 [pppd] Connect: ppp0 <--> /dev/pts/4
Aug 3 13:35:36 [/etc/hotplug/net.agent] NET add event not supported
Aug 3 13:35:38 [pptp] anon log[decaps_hdlc:pptp_gre.c:198]: PPP mode seems to
be Asynchronous._
Aug 3 13:35:39 [pppd] Remote message: Welcome^M^J
Aug 3 13:35:41 [pppd] local IP address 129.177.43.23
Aug 3 13:35:41 [pppd] remote IP address 129.177.43.1
Aug 3 13:36:07 [pppd] Unsupported protocol 0xd44a received
Aug 3 13:36:57 [pppd] Unsupported protocol 0xcc4a received
aug 3 13:38:20 [su(pam_unix)] session opened for user root by (uid=1001)
Aug 3 13:39:21 [anacron] Job `cron.daily' started
Aug 3 13:39:29 [crontab] (root) LIST (root)_
Aug 3 13:39:37 [pptp] anon warn[decaps_gre:pptp_gre.c:300]: short read (-1):
Message too long
Aug 3 13:39:37 [pptp] anon log[callmgr_main:pptp_callmgr.c:234]: Closing connection
Aug 3 13:39:37 [pptp] anon log[pptp_conn_close:pptp_ctrl.c:308]: Closing PPTP
connection
Aug 3 13:39:39 [pptp] anon log[call_callback:pptp_callmgr.c:74]: Closing connection
Aug 3 13:39:39 [pppd] Hangup (SIGHUP)
Aug 3 13:39:39 [kernel] Badness in local_bh_enable at kernel/softirq.c:113
Aug 3 13:39:39 [pppd] Modem hangup
Aug 3 13:39:39 [pppd] Connection terminated.
Aug 3 13:39:39 [pppd] Connect time 4.1 minutes.
Aug 3 13:39:39 [pppd] Sent 310556 bytes, received 1615363 bytes.
Aug 3 13:39:39 [/etc/hotplug/net.agent] NET remove event not supported
Aug 3 13:39:39 [pppd] Failed to open /dev/pts/4: No such file or directory
- Last output repeated 9 times -
Aug 3 13:39:39 [pppd] Exit.


And giving this call trace in the kernel log:

Badness in local_bh_enable at kernel/softirq.c:113
Call Trace:
[<c0120b88>] local_bh_enable+0x88/0x90
[<c037bd54>] ppp_async_push+0xa4/0x1b0
[<c015dd04>] __lookup_hash+0x64/0xd0
[<c037b621>] ppp_asynctty_wakeup+0x31/0x60
[<c032bff6>] pty_unthrottle+0x56/0x60
[<c032898a>] check_unthrottle+0x3a/0x40
[<c0328a34>] n_tty_flush_buffer+0x14/0x50
[<c032c3ae>] pty_flush_buffer+0x5e/0x60
[<c03253ac>] do_tty_hangup+0x3ac/0x420
[<c0326823>] release_dev+0x5b3/0x600
[<c03fc000>] snd_pcm_oss_init_substream+0x50/0x90
[<c01402fe>] zap_pmd_range+0x4e/0x70
[<c014036e>] unmap_page_range+0x4e/0x90
[<c0326beb>] tty_release+0x2b/0x60
[<c015091e>] __fput+0xce/0xe0
[<c014ef5b>] filp_close+0x4b/0x80
[<c011e5fc>] put_files_struct+0x6c/0xe0
[<c011f1c5>] do_exit+0x165/0x340
[<c011f3d5>] sys_exit+0x15/0x20
[<c010930b>] syscall_call+0x7/0xb



Steps to reproduce:

Don't know how to trigger it, but it happens all the time.


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