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    SubjectRe: oops in ext3_discard_reservation()
    Mike Galbraith <efault@gmx.de> wrote:
    >
    > I just received the oops below. This kernel is mostly virgin, but does
    > contain a small bundle of scheduler modifications. Salt to taste.
    >
    > -Mike
    >
    > BUG: unable to handle kernel paging request at virtual address 0001001c
    > printing eip:
    > c10ab599
    > *pde = 00000000
    > Oops: 0000 [#1]
    > PREEMPT SMP
    > last sysfs file: /devices/system/cpu/cpu0/cpufreq/scaling_setspeed
    > Modules linked in: ohci1394 prism54 xt_tcpudp xt_pkttype ipt_LOG xt_limit snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device edd tda9887 saa7134 snd_intel8x0 snd_ac97_codec ieee1394 snd_ac97_bus bt878 snd_pcm ir_kbd_i2c snd_timer snd soundcore i2c_i801 snd_page_alloc ipt_REJECT xt_state iptable_mangle iptable_nat ip_nat iptable_filter ip6table_mangle ip6table_filter ip_conntrack ip_tables ip6_tables x_tables tuner bttv video_buf firmware_class ir_common btcx_risc tveeprom sd_mod nls_iso8859_1 nls_cp437 nls_utf8
    > CPU: 1
    > EIP: 0060:[<c10ab599>] Not tainted VLI
    > EFLAGS: 00210206 (2.6.16-rc6-mm1x-smp #19)
    > EIP is at ext3_discard_reservation+0x29/0x63
    > eax: f7e39100 ebx: c1583b50 ecx: 00000000 edx: c10b9ca7
    > esi: 00010000 edi: 00010018 ebp: dffc2e9c esp: dffc2e8c
    > ds: 007b es: 007b ss: 0068
    > Process kswapd0 (pid: 583, threadinfo=dffc2000 task=dffc6030)
    > Stack: <0>f7e39100 ffffffff c1583ab0 c1583b50 dffc2eb8 c10b9d0b dffc2eb8 00010000
    > c1583b50 c10b9dc1 dffc2ef8 dffc2ecc c10835e5 dffc2ecc c1583b58 c1583b50
    > dffc2ee4 c1083669 00000012 00000080 f71817a8 f71817a0 dffc2f0c c1083915
    > Call Trace:
    > <c1004073> show_stack_log_lvl+0xa9/0xe3 <c100424d> show_registers+0x1a0/0x236
    > <c1004561> die+0x12f/0x2ae <c1019aff> do_page_fault+0x353/0x5fa
    > <c1003a2b> error_code+0x4f/0x54 <c10b9d0b> ext3_clear_inode+0x64/0xb6
    > <c10835e5> clear_inode+0xa3/0x103 <c1083669> dispose_list+0x24/0x103
    > <c1083915> shrink_icache_memory+0x1cd/0x220 <c10533c7> shrink_slab+0x160/0x1f9
    > <c1054942> balance_pgdat+0x200/0x3be <c1054bd9> kswapd+0xd9/0x125
    > <c1001005> kernel_thread_helper+0x5/0xb
    > Code: 5d c3 55 89 e5 57 56 53 83 ec 04 89 c3 8b 70 b4 8b 80 a8 00 00 00 8b 80 78 01 00 00 05 00 11 00 00 89 45 f0 85 f6 74 0a 8d 7e 18 <8b> 57 04 85 d2 75 08 83 c4 04 5b 5e 5f 5d c3 e8 2e 41 30 00 8b

    It died in rsv_is_empty(), accessing rsv->_rsv_end, because `block_i' has a
    value of 0x00010000.

    Looks like a bitflip. How good is that hardware?
    -
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