Re: 2.4.26 intermittent kernel bug on boot.

[Marcelo Tosatti <marcelo.tosatti@cyclades.com>]

Silly question: Can you reproduce it without swsusp2?

On Sat, Apr 17, 2004 at 04:37:05AM +1000, Nigel Cunningham wrote:
> Hi.
> 
> On Sat, 2004-04-17 at 04:02, Michael Frank wrote:
> > kernel BUG at slab.c:1238!
> 
> That's a really strange oops to see. It's testing that the GFP flags
> match the slab's flags. To get an oops there, you'd have to have a
> non-dma slab (which makes sense), but you've called the kmem_cache_alloc
> routine with a DMA flag. Line 444 of kernel/signal.c clearly doesn't do
> that! Could the args be being corrupted while being passed? What does a
> backtrace look like?
> 
> Nigel
> 
> > invalid operand: 0000
> > 
> > CPU:    0
> > EIP:    1010:[<c013bf39>]    Not tainted
> > EFLAGS: 00010002
> > EIP is at kmem_cache_alloc+0x31/0xdc [kernel]
> > eax: 00000000   ebx: 00000008   ecx: 00000000   edx: 00000001
> > esi: 00000000   edi: 0000000b   ebp: 00000020   esp: c0407f10
> > ds: 1018   es: 1018   ss: 1018
> > Process swapper (pid: 0, stackpage=c0407000)
> > Stack: 0000000b 00000001 0000000b c040656c c0121f8c 00000000 00000020 c0406000
> >         0000000b 0000000b 00000000 c012206d 0000000b 00000001 c040656c 00000282
> >         0000000b c0406000 c012211c 0000000b 00000001 c0406000 00000286 c0406000
> > Call Trace:
> >   [<c0121f8c>] send_signal+0x2c/0xf0 [kernel]
> >   [<c012206d>] deliver_signal+0x1d/0x54 [kernel]
> >   [<c012211c>] send_sig_info+0x78/0x88 [kernel]
> >   [<c01221a9>] force_sig_info+0x7d/0x88 [kernel]
> >   [<c010a5e4>] do_double_fault+0x0/0x64 [kernel]
> >   [<c01223d5>] force_sig+0x11/0x18 [kernel]
> >   [<c010a619>] do_double_fault+0x35/0x64 [kernel]
> >   [<c0109dc4>] error_code+0x34/0x40 [kernel]
> > 
> > Code: 0f 0b d6 04 e0 b7 2b c0 8d 5e 08 9c 5f fa 8b 4e 08 39 d9 75
> > 
> > Entering kdb (current=0xc0406000, pid 0) Oops: invalid operand
> > due to oops @ 0xc013bf39
> > eax = 0x00000000 ebx = 0x00000008 ecx = 0x00000000 edx = 0x00000001
> > esi = 0x00000000 edi = 0x0000000b esp = 0xc0407f10 eip = 0xc013bf39
> > ebp = 0x00000020 xss = 0x00001018 xcs = 0x00001010 eflags = 0x00010002
> > xds = 0x00001018 xes = 0x00001018 origeax = 0xffffffff &regs = 0xc0407edc
> > kdb>
> > 
> > Board did 50K+ boots testing swsusp with 2.4.2[012345]...
> > 
> > It's still sitting in kdb, if you want me lookup something let me know.
> > 
> > -
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> -- 
> Nigel & Michelle Cunningham
> C/- Westminster Presbyterian Church Belconnen
> 61 Templeton Street, Cook, ACT 2614.
> +61 (2) 6251 7727(wk); +61 (2) 6254 0216 (home)
> 
> Evolution (n): A hypothetical process whereby infinitely improbable events occur 
> with alarming frequency, order arises from chaos, and no one is given credit.
> 
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