Hello,
so now once crashes on UP system were sorted out, I tried to
put new kernel on my SMP host - and sorry to say, but it does not
seem to work as advertised :-( It seems that we somehow got
blocks from CPU#1 into memory blocks on CPU#0, and free_block
complains that caller holds cachep->nodelists[0]->list_lock
while nodeid for block passed to free_block() comes from processor
(and node) #1...
I cannot find how this happened. Hopefully somebody else
will know... Meanwhile I'll try to get rid of PREEMPT, apparently
although it is now masqueraded under 'Low-latency desktop' it
is still somewhat dangerous. If it is triggered by preempt, that is.
Thanks,
Petr Vandrovec
ttyS0 at I/O 0x3f8 (irq = 0) is a 16550A
ttyS1 at I/O 0x2f8 (irq = 0) is a 16550A
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
parport: PnPBIOS parport detected.
parport0: PC-style at 0x378 (0x778), irq 7, dma 3 [PCSPP,TRISTATE,COMPAT,EPP,ECP,DMA]
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
pktcdvd: v0.2.0a 2004-07-14 Jens Axboe ([email protected]) and [email protected]
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
AMD8111: IDE controller at PCI slot 0000:00:07.1
AMD8111: chipset revision 3
AMD8111: not 100% native mode: will probe irqs later
AMD8111: 0000:00:07.1 (rev 03) UDMA133 controller
ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio
----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at mm/slab.c:1849
invalid operand: 0000 [1] PREEMPT SMP
CPU 0
Modules linked in:
Pid: 8, comm: events/0 Not tainted 2.6.14-rc1-1619 #1
RIP: 0010:[<ffffffff8016e826>] <ffffffff8016e826>{free_block+294}
RSP: 0000:ffff81007ff21d88 EFLAGS: 00010002
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000310
RDX: 0000000000000000 RSI: ffff81007ffddd10 RDI: ffff81007ffda080
RBP: ffff81007ffde000 R08: ffff81003ffaed90 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff81007ffc9b50
R13: ffff81007ffde048 R14: ffff81007ffda080 R15: ffff81007ffda080
FS: 0000000000000000(0000) GS:ffffffff805fb800(0000) knlGS:0000000000000000
CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 0000000000101000 CR4: 00000000000006e0
Process events/0 (pid: 8, threadinfo ffff81007ff20000, task ffff81003ff8c790)
Stack: 0000000000000000 0000000000000000 0000000000000213 0000000200000000
ffff81007ffddd10 ffff81007ffddd10 ffff81007ffddce8 0000000000000002
0000000000000000 ffff81007ffda080
Call Trace:<ffffffff8016fdc7>{drain_array_locked+167} <ffffffff8016feee>{cache_reap+206}
<ffffffff803a2374>{_spin_lock_irqsave+36} <ffffffff8016fe20>{cache_reap+0}
<ffffffff8014a1bc>{worker_thread+476} <ffffffff80132610>{default_wake_function+0}
<ffffffff80132610>{default_wake_function+0} <ffffffff80149fe0>{worker_thread+0}
<ffffffff8014ebc2>{kthread+146} <ffffffff8010ed12>{child_rip+8}
<ffffffff80149fe0>{worker_thread+0} <ffffffff8014eb30>{kthread+0}
<ffffffff8010ed0a>{child_rip+0}
Code: 0f 0b 68 bd aa 3d 80 c2 39 07 48 89 ee 4c 89 ff 4c 8d 75 30
RIP <ffffffff8016e826>{free_block+294} RSP <ffff81007ff21d88>
<6>note: events/0[8] exited with preempt_count 1
hda: _NEC DVD_RW ND-3500AG, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: WDC WD1200JB-00CRA0, ATA DISK drive
ide1 at 0x170-0x177,0x376 on irq 15
hdc: max request size: 128KiB
hdc: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=65535/16/63, UDMA(100)
hdc: cache flushes not supported
hdc: hdc1
libata version 1.12 loaded.
sata_sil version 0.9
ACPI: PCI Interrupt 0000:01:0b.0[A] -> GSI 17 (level, low) -> IRQ 177
<and box is dead>
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