bug in softirq.c / 2.5.73+patches

From: Wiktor Wodecki (wodecki@gmx.de)
Date: Thu Jul 10 2003 - 16:42:15 EST


Hello,

I just experienced a strange bug which brought down my x session and
made my keyboard not accept keystrokes except of alt-f1,f2,f3, etc.
Just before the crash my dsl provider seemed to have cut my link
for some reason. Here's the trace:

Jul 10 23:26:18 kakerlak pppoe[270]: Session 55831 terminated --
received PADT from peer
Jul 10 23:26:18 kakerlak pppoe[270]: Sent PADT
Jul 10 23:26:18 kakerlak pppd[258]: Modem hangup
Jul 10 23:26:18 kakerlak kernel: Badness in local_bh_enable at
kernel/softirq.c:117

about 30 seconds later...

Jul 10 23:26:18 kakerlak kernel: Call Trace: [local_bh_enable+133/144]
[ppp_async_push+162/400] [lookup_hash+108/192]
[ppp_asynctty_wakeup+45/96] [pty_unthrottle+88/96]
[check_unthrottle+61/64] [n_tty_flush_buffer+19/96]
[pty_flush_buffer+103/112] [do_tty_hangup+1009/1120]
[release_dev+1575/1632] [zap_pmd_range+75/112]
[unmap_page_range+67/112] [dput+34/608] [tty_release+42/96]
[__fput+264/288] [filp_close+77/128] [put_files_struct+84/192]
[do_exit+337/1088] [do_IRQ+252/304] [do_group_exit+58/176]
[syscall_call+7/11]
Jul 10 23:26:18 kakerlak pppd[258]: Connection terminated.
Jul 10 23:26:18 kakerlak pppd[258]: Connect time 545.8 minutes.
Jul 10 23:26:18 kakerlak pppd[258]: Sent 4090983 bytes, received
15119705 bytes.

On a sidenote a getty on console /dev/ttyS1 is complaining about an
input/output error every few minutes. However it does so for a time now
and it didn't bother me yet:
getty[6811]: ttyS1: ioctl: Input/output error

I use 2.5.74-mm1 (without the 64bit dev_t patch) and Con's
O2int-0307041440 patch. Preempt is enabled and the .config attached.

-- 
Regards,

Wiktor Wodecki



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