Messages in this thread | | | Date | Wed, 23 Jan 2002 11:24:42 -0800 | From | J Sloan <> | Subject | Re: Low latency for recent kernels |
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Ditto here -
2.4.18-pre6 + previous low latency patch boots & runs -
2.4.18-pre6 + latest low latency panics after this line:
Mount-cache hash table entries: 8192 (order: 4, 65536 bytes)
(next line would have been "Buffer-cache hash table entries...")
Here is the oops (be advised, it's copied by hand)
Kernel panic: can't allocate root vfsmount <1>Unable to handle kernel NULL pointer dereference at virtual address 00000000c011a830 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0010:[<c011a830>] Not tainted Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00010207 eax: 000001f3 ebx: 00000001 ecx: 00000000 edx: 00000000 esi: 00000000 edi: c02425a0 ebp: c020bf10 esp: c020bf10 ds: 0018 es: 0018 ss: 0018 Process (pid: -1072520631, stackpage=c020b000) Stack: c020bf28 c011a8aa c020bf38 c024a5c0 00000000 c02425a0 c020bf30 c01178dd c020bf48 c01177ef 00000000 00000000 c02425c0 fffffff6 c020bf64 c01175db c02425c0 00000046 c020bf84 00000000 c0240900 c020bf7c c01082ac c01f9bc8 Call Trace: [<c011a8aa>] [<c01178dd>] [<c01177ef>] [<c01175db>] [<c01082ac>] [<c0105000>] [<c0105000>] [<c0110018>] [<c0113382>] Code: 8b 02 85 c0 74 07 8b 02 83 e0 02 74 06 81 c1 c0 08 00 00 8b
>>EIP; c011a830 <count_active_tasks+20/50> <===== Trace; c011a8aa <timer_bh+4a/270> Trace; c01178dd <bh_action+1d/50> Trace; c01177ef <tasklet_hi_action+4f/70> Trace; c01175db <do_softirq+5b/b0> Trace; c01082ac <do_IRQ+ac/c0> Trace; c0105000 <_stext+0/0> Trace; c0105000 <_stext+0/0> Trace; c0110018 <do_page_fault+28/555> Trace; c0113382 <panic+e2/f0> Code; c011a830 <count_active_tasks+20/50> 00000000 <_EIP>: Code; c011a830 <count_active_tasks+20/50> <===== 0: 8b 02 mov (%edx),%eax <===== Code; c011a832 <count_active_tasks+22/50> 2: 85 c0 test %eax,%eax Code; c011a834 <count_active_tasks+24/50> 4: 74 07 je d <_EIP+0xd> c011a83d <count_active_tasks+2d/50> Code; c011a836 <count_active_tasks+26/50> 6: 8b 02 mov (%edx),%eax Code; c011a838 <count_active_tasks+28/50> 8: 83 e0 02 and $0x2,%eax Code; c011a83b <count_active_tasks+2b/50> b: 74 06 je 13 <_EIP+0x13> c011a843 <count_active_tasks+33/50> Code; c011a83d <count_active_tasks+2d/50> d: 81 c1 c0 08 00 00 add $0x8c0,%ecx Code; c011a843 <count_active_tasks+33/50> 13: 8b 00 mov (%eax),%eax
Kernel panic: Aiee, killing interrupt handler!
It looks like the newer version has substantial changes in filemap.c and page_alloc.c relative the the older version; if I had more time I'd have looked into it further -
Best Regards,
joe
rwhron@earthlink.net wrote:
>>http://www.zip.com.au/~akpm/linux/2.4.18-pre6-low-latency.patch.gz >> > >2.4.18-pre3 with 2.4.17-low-latency.patch worked fine on this system >2.4.18-pre6 with 2.4.18-pre6-low-latency.patch panics at boot time. >2.4.18-pre6 is fine also. > >System has reiserfs root filesystem. No modules. >/usr/src/linux/System.map was the System.map for 2.4.18pre6ll for >the ksymoops below. > >No modules in ksyms, skipping objects >No ksyms, skipping lsmod >Kernel panic: can't allocate root vfsmount > <1>Unable to handle kernel NULL pointer dereference at virtual address 0000002c >c01234d3 >*pde = 00000000 >Oops: 0000 >CPU: 0 >EIP: 0010:[<c01234d3>] Not tainted >Using defaults from ksymoops -t elf32-i386 -a i386 >EFLAGS: 00010046 >eax: 00000000 ebx: 00000008 ecx: 00000000 edx: 00000073 >esi: 00000000 edi: 00000018 ebp: 00000020 esp: c0215e78 >ds: 0018 es: 0018 ss: 0018 >Process . (pid: -1072541344, stackpage=c0215000) >Stack: 00000018 00000001 00000018 c0214568 c0117e6c 00000000 00000020 c0214000 > 00000018 00000018 00000000 c0117f4c 00000018 00000001 c0214568 00000086 > 00000018 c0214000 c0117ff4 00000018 00000001 c0214000 01ebb409 c0214000 >Call Trace: [<c0117e6c>] [<c0117f4c>] [<c0117ff4>] [<c0118253>] [<c0117208>] > [<c0117291>] [<c011759f>] [<c010a889>] [<c0107d1c>] [<c0107e82>] [<c0105000>] > [<c0109c18>] [<c0105000>] [<c0112020>] >Code: f6 46 2c 01 74 02 0f 0b 9c 5f fa 8b 4e 08 39 d9 75 22 8b 4e > >>>EIP; c01234d2 <kmem_cache_alloc+2a/b8> <===== >>> >Trace; c0117e6c <send_signal+2c/f0> >Trace; c0117f4c <deliver_signal+1c/50> >Trace; c0117ff4 <send_sig_info+74/88> >Trace; c0118252 <send_sig+1a/20> >Trace; c0117208 <update_one_process+68/d4> >Trace; c0117290 <update_process_times+1c/88> >Trace; c011759e <do_timer+22/70> >Trace; c010a888 <timer_interrupt+60/10c> >Trace; c0107d1c <handle_IRQ_event+30/5c> >Trace; c0107e82 <do_IRQ+6a/a8> >Trace; c0105000 <_stext+0/0> >Trace; c0109c18 <call_do_IRQ+6/e> >Trace; c0105000 <_stext+0/0> >Trace; c0112020 <panic+c0/d0> >Code; c01234d2 <kmem_cache_alloc+2a/b8> >00000000 <_EIP>: >Code; c01234d2 <kmem_cache_alloc+2a/b8> <===== > 0: f6 46 2c 01 testb $0x1,0x2c(%esi) <===== >Code; c01234d6 <kmem_cache_alloc+2e/b8> > 4: 74 02 je 8 <_EIP+0x8> c01234da <kmem_cache_alloc+32/b8> >Code; c01234d8 <kmem_cache_alloc+30/b8> > 6: 0f 0b ud2a >Code; c01234da <kmem_cache_alloc+32/b8> > 8: 9c pushf >Code; c01234da <kmem_cache_alloc+32/b8> > 9: 5f pop %edi >Code; c01234dc <kmem_cache_alloc+34/b8> > a: fa cli >Code; c01234dc <kmem_cache_alloc+34/b8> > b: 8b 4e 08 mov 0x8(%esi),%ecx >Code; c01234e0 <kmem_cache_alloc+38/b8> > e: 39 d9 cmp %ebx,%ecx >Code; c01234e2 <kmem_cache_alloc+3a/b8> > 10: 75 22 jne 34 <_EIP+0x34> c0123506 <kmem_cache_alloc+5e/b8> >Code; c01234e4 <kmem_cache_alloc+3c/b8> > 12: 8b 4e 00 mov 0x0(%esi),%ecx > > <0>Kernel panic: Aiee, killing interrupt handler! >
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