not sure, whether this is an rt-related problem but on 2.6.23.12-rt14, i had
the following message ... not sure, whether this is any help ...
i have been running this kernel for quite some time without any problem, so i guess
it is not easy to reproduce:
kernel BUG at mm/slab.c:649!
invalid opcode: 0000 [#1]
PREEMPT SMP
Modules linked in: nfs lockd nfs_acl sunrpc snd_hdsp binfmt_misc ppdev parport_pc lp parport ipv6 cpufreq_powersave cpufreq_stats cpufreq_userspace cpufreq_conservative cpufreq_ondemand ext2 fuse dm_snapshot dm_mirror dm_mod acpi_cpufreq freq_table snd_hwdep joydev irtty_sir sir_dev snd_hda_intel pcmcia snd_pcm_oss snd_pcm arc4 snd_mixer_oss ecb blkcipher snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq tsdev snd_timer yenta_socket rsrc_nonstatic iwl3945 snd_seq_device pcmcia_core battery ac psmouse firmware_class usbhid irda snd video i2c_i801 crc_ccitt serio_raw hid output mac80211 button iTCO_wdt i2c_core soundcore cfg80211 snd_page_alloc rtc intel_agp thinkpad_acpi pcspkr nvram evdev ext3 jbd mbcache sg sr_mod cdrom piix generic ide_core sd_mod ata_piix ehci_hcd uhci_hcd usbcore ata_generic ahci libata scsi_mod e1000 thermal processor fan
CPU: 0
EIP: 0060:[<c0174d1c>] Not tainted VLI
EFLAGS: 00010246 (2.6.23.12-rt14-686 #1)
EIP is at kmem_cache_free+0x92/0x9b
eax: 40000000 ebx: dfffc540 ecx: 00000000 edx: c130b040
esi: d8582c48 edi: d8582bfc ebp: 00000246 esp: df90df80
ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068 preempt:00000001
Process softirq-rcu/0 (pid: 13, ti=df90d000 task=df926650 task.ti=df90d000)
Stack: 00000000 d8582ce8 d8582c48 c03b1260 c0157119 c03b4200 fffffeff 00000000
00000100 c012b93e 00000000 00000001 df90dfc4 c03b4200 c03b1018 c2022fec
c2022fe0 00000032 c2022fe0 c012b816 00000000 00000000 c01387c3 c013877b
Call Trace:
[<c0157119>] rcu_process_callbacks_rt+0x47/0x6e
[<c012b93e>] ksoftirqd+0x128/0x251
[<c012b816>] ksoftirqd+0x0/0x251
[<c01387c3>] kthread+0x48/0x58
[<c013877b>] kthread+0x0/0x58
[<c0104e07>] kernel_thread_helper+0x7/0x10
=======================
Code: fa 89 f0 e8 0c fe ff ff 8b 04 24 03 1c 85 80 94 37 c0 89 d8 e8 06 bc 15 00 83 c4 04 5b 5e 5f c3 8b 52 0c 8b 0a eb 9e 0f 0b eb fe <0f> 0b eb fe 8b 52 0c eb 9f 56 53 89 c6 8b 58 08 8b 50 0c 89 d8
EIP: [<c0174d1c>] kmem_cache_free+0x92/0x9b SS:ESP 0068:df90df80
cheers, tim
--
tim@xxxxxxxxxx
http://tim.klingt.org
There's no such entity as "most people". These are generalities. All
generalities are meaningless. You've got to pin it down to a specific
person doing a specific thing at a specific time and space.
William S. Burroughs
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