Re: 2.4.25 SMP - BUG at page_alloc.c:105

[Marcelo Tosatti]

The backtrace is odd to me. 

set_page_dirty() does not call __free_pages_ok() directly or indirectly.

How can it be?

---

Hi,

I found this in the logs of a Dual Athlon MP machine (Tyan board)
running 2.4.25-SMP:

kernel BUG at page_alloc.c:105! 
invalid operand: 0000 
CPU:    0 
EIP: 0010:[__free_pages_ok+80/704]    Not tainted 
EFLAGS: 00010286 
eax: c0333674   ebx: c1b2d720   ecx: 00000000   edx: f22f7a84 
esi: 00000001   edi: 00000000   ebp: 00000001   esp: f6901e3c 
ds: 0018   es: 0018   ss: 0018 
Process svscan (pid: 1348, stackpage=f6901000) 
Stack: c033364c f741cbc0 f22f7a84 00000001 0804c000 c0133ea6 f22f79c0 00000004  
       00000001 00000001 0804c000 00000001 c01308fa c1b2d720 f68e3080 0804b000  
       00001000 0844b000 c03ac4e0 00000001 0804c000 f68e3084 f42baa40 f7212440  
Call Trace: [set_page_dirty+166/176] [zap_page_range+330/400] [exit_mmap+221/352] \
[mmput+88/176] [do_exit+259/800]   [sig_exit+195/208] [dequeue_signal+95/192] \
[do_signal+448/694] [schedule_timeout+94/176] [process_timeout+0/96] \
[sys_nanosleep+232/448]   [do_page_fault+0/1347] [signal_return+20/24] 

Other than this BUG (that took down the machine hard, I was lucky to log
across the network), there appear to be no relevant logs shortly before
this crash.


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