Linus> _Anything_ can be explained by bad external caches ;-)
Linus> But yes, a bad external cache would give exactly the symptoms
Linus> you see. Not that it's the _only_ thing that would give those
Linus> symptoms (a wild kernel pointer still isn't ruled out, for
Linus> example), but a one-bit corruption is one of the more likely
Linus> things a bad cache will result in.
I have been running 1.3.95 with a totally replaced external cache and
got this oops after just over 25 hours of otherwise normal uptime.
There was modem activity and I was cutting and pasting between and
xterm and XEmacs when this occurred. The mouse froze, but the
keyboard and network were still active, so I was able to telnet in and
affect a normal shutdown.
Apr 28 11:55:07 deanna kernel: Unable to handle kernel paging request at virtual address fa343120
Apr 28 11:55:07 deanna kernel: current->tss.cr3 = 00101000, ^Lr3 = 00101000
Apr 28 11:55:07 deanna kernel: *pde = 00000000
Apr 28 11:55:07 deanna kernel: Oops: 0002
Apr 28 11:55:07 deanna kernel: CPU: 0
Apr 28 11:55:07 deanna kernel: EIP: 0010:[stl_intr+962/2412]
Apr 28 11:55:07 deanna kernel: EFLAGS: 00010002
Apr 28 11:55:07 deanna kernel: eax: 00a34062 ebx: 00000002 ecx: 00000002 edx: 000002a4
Apr 28 11:55:07 deanna kernel: esi: 00a34000 edi: 3a343120 ebp: 00004410 esp: 001cd524
Apr 28 11:55:07 deanna kernel: ds: 0018 es: 0018 fs: 002b gs: 0018 ss: 0018
Apr 28 11:55:07 deanna kernel: Process swapper (pid: 0, process nr: 0, stackpage=001cb644)
Apr 28 11:55:07 deanna kernel: Stack: 002790b8 0000000a 00000000 00009000 00000206 01c12810 00000046 00113612
Apr 28 11:55:07 deanna kernel: 01c12810 00000010 3a343120 000002a4 00a34000 0017473c 888ce1cd 014602a4
Apr 28 11:55:07 deanna kernel: 0146851c 00000000 00000000 ffffff02 00110000 0027977b 000002a0 00000000
Apr 28 11:55:07 deanna kernel: Call Trace: [send_sig+318/328] [flush_to_ldisc+136/144] [del_timer+12/60] [do_fast_IRQ+35/48] [fast_IRQ10_interrupt+63/112] [sys_idle+92/112] [system_call+89/160]
Apr 28 11:55:07 deanna kernel: [init+0/552] [start_kernel+350/360] [it_real_fn+0/72] [schedule+543/624]
Apr 28 11:55:07 deanna kernel: Code: f3 6c 8b 44 24 30 8b 80 20 09 00 00 89 44 24 24 89 da c1 ea
Apr 28 11:55:07 deanna kernel: Aiee, killing interrupt handler
Apr 28 11:55:07 deanna kernel: kfree of non-kmalloced memory: 001cd684, next= 00000000, order=0
Apr 28 11:55:07 deanna kernel: kfree of non-kmalloced memory: 001cd674, next= 00000000, order=0
Apr 28 11:55:07 deanna kernel: kfree of non-kmalloced memory: 001cdaa8, next= 00000000, order=0
Apr 28 11:55:07 deanna kernel: idle task may not sleep
Apr 28 11:55:07 deanna kernel: Unable to handle kernel NULL pointer dereference at virtual address c0000000
Apr 28 11:55:07 deanna kernel: current->tss.cr3 = 00101000, ^Lr3 = 00101000
Apr 28 11:55:07 deanna kernel: *pde = 00102067
Apr 28 11:55:07 deanna kernel: *pte = 00000027
Apr 28 11:55:07 deanna kernel: Oops: 0000
Apr 28 11:55:07 deanna kernel: CPU: 0
Apr 28 11:55:07 deanna kernel: EIP: 0010:[<00000000>]
Apr 28 11:55:07 deanna kernel: EFLAGS: 00010216
Apr 28 11:55:07 deanna kernel: eax: 00000000 ebx: 0146810c ecx: 00000000 edx: 00a3410c
Apr 28 11:55:07 deanna kernel: esi: fffffffc edi: 00000005 ebp: 001cd3f4 esp: 001cd3e8
Apr 28 11:55:07 deanna kernel: ds: 0018 es: 0018 fs: 002b gs: 0000 ss: 0018
Apr 28 11:55:07 deanna kernel: Process swapper (pid: 0, process nr: 0, stackpage=001cb644)
Apr 28 11:55:07 deanna kernel: Stack: 00110058 00000000 00000004 001f450c 00114fd3 001cd410 001cd68c 00000000
Apr 28 11:55:07 deanna kernel: 001cd474 0010a2fb 001cdd08 0000000c 01d37414 001cd68c 00000000 001cd474
Apr 28 11:55:07 deanna kernel: 00000018 001c0018 001c0018 001c0000 00000000 fffffffe 0010fab0 00100010
Apr 28 11:55:07 deanna kernel: Call Trace: [tqueue_bh+40/56] [do_bottom_half+59/96] [handle_bottom_half+11/32] [schedule+348/624] [exit_notify+206/476] [do_exit+461/468] [die_if_kernel+694/704]
Apr 28 11:55:07 deanna kernel: [<03000000>] [<02800000>] [sb_mixer_init+276/328] [do_page_fault+659/668] [do_page_fault+0/668] [error_code+75/96] [stl_intr+962/2412] [send_sig+318/328]
Apr 28 11:55:08 deanna kernel: [flush_to_ldisc+136/144] [del_timer+12/60] [do_fast_IRQ+35/48] [fast_IRQ10_interrupt+63/112] [sys_idle+92/112] [system_call+89/160] [init+0/552] [start_kernel+350/360]
Apr 28 11:55:08 deanna kernel: [it_real_fn+0/72] [schedule+543/624]
Apr 28 11:55:08 deanna kernel: Code: 01 00 00 00 df e9 00 f0 c3 e2 00 f0 df e9 00 f0 df e9 00 f0
Apr 28 11:55:08 deanna kernel: Aiee, killing interrupt handler
Apr 28 11:55:08 deanna kernel: idle task may not sleep
Apr 28 11:55:08 deanna last message repeated 3 times
On to test 1.3.96 on this machine ...
-- steve@miranova.com baur Unsolicited commercial e-mail will be proofread for $250/hour. Andrea Seastrand: For your vote on the Telecom bill, I will vote for anyone except you in November.