Have I found a bug -- should I upgrade further

John Covici (covici@ccs.covici.com)
Thu, 09 Jul 1998 14:06:47 -0400


Hi there. I am running kernel 2.1.89 and yesterday I had pppd running
and some emacs byte compiles in the background when I got the
following messages:

Jul 8 12:50:36 ccs kernel: Warning: dev (00:35) tty->count(1479053596) != #fd's(1) in release_dev
Jul 8 12:50:36 ccs kernel: Unable to handle kernel paging request at virtual address 08289124
Jul 8 12:50:36 ccs kernel: current->tss.cr3 = 01340000, %cr3 = 01340000
Jul 8 12:50:36 ccs kernel: *pde = 0154b067
Jul 8 12:50:36 ccs kernel: *pte = 00000000
Jul 8 12:50:36 ccs kernel: Oops: 0000
Jul 8 12:50:36 ccs kernel: CPU: 0
Jul 8 12:50:36 ccs kernel: EIP: 0010:[<c018c42c>]
Jul 8 12:50:36 ccs kernel: EFLAGS: 00010202
Jul 8 12:50:36 ccs kernel: eax: c15a0128 ebx: c15a0128 ecx: c244e000 edx: 0828911c
Jul 8 12:50:36 ccs kernel: esi: c1f6c980 edi: c15a0128 ebp: c15a0000 esp: c1bd9ee8
Jul 8 12:50:36 ccs kernel: ds: 0018 es: 0018 ss: 0018
Jul 8 12:50:36 ccs kernel: Process sh (pid: 3573, process nr: 24, stackpage=c1bd9000)
Jul 8 12:50:36 ccs kernel: Stack: c15a0000 c1f6c980 00000000 c018c4cc c1f6c980 00000000 c15a0128 00000000
Jul 8 12:50:36 ccs kernel: c1f6c980 c1f6c980 c018bdd1 c1f6c980 00000000 c15a0000 c01cfa35 00000000
Jul 8 12:50:36 ccs kernel: c1f60241 fffffe00 c1f6c980 c1f6c980 c2040440 c2048020 c0098380 c018c2ea
Jul 8 12:50:36 ccs kernel: Call Trace: [<c018c4cc>] [<c018bdd1>] [<c01cfa35>] [<c018c2ea>] [<c018c347>] [<c01c0241>] [<c0123f6e>]
Jul 8 12:50:36 ccs kernel: [<c0122daf>] [<c0122ef9>] [<c0109b02>]
Jul 8 12:50:36 ccs kernel: Code: 39 72 08 74 0a 8d 5a 04 8b 52 04 85 d2 75 f1 83 7c 24 14 00
Jul 8 12:50:38 ccs kernel: rs_close: bad serial port count; tty->count is 1, state->count is 2

I have a few questions about those messages.

Being that I have 40M of memory and an 80M swap file, why should I
have gotten the message about being unable to to handle a kernel
paging request?

Remarkably enough, the system kept going even after the oops, but I
wonder why I didn't get a symbol for where in the kernel this
happened? My System.map is there and my log says that the symbols
were loaded.

I also wonder if I should have a more recent kernel or would I be
trading one instability for another (I don't have smp)?

Well, that's all for now and thanks for any help you can give.

-- 
         John Covici
          covici@ccs.covici.com

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