(Please CC me on responses).
I've been meaning to report this for quite some time, but haven't got to it.
I think it may be as a result of some driver that's loaded, rather than the
core, as running the git tip (0556e82 and on another machine at home and I
can't reproduce it there.
I'm going to try a bisect shortly, and I'll post a followup thereafter.
Strace gives me this fun in the end:
delete_module("button", O_RDONLY|O_EXCL|O_NONBLOCK
and it just sits there.
Linux bohr-int 2.6.29-rc7-00188-gebdcc81 #35 SMP Thu Mar 12 03:41:55 PDT 2009 x86_64 Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz GenuineIntel GNU/Linux
Gnu C 4.3.3
Gnu make 3.81
binutils 2.19.1
util-linux 2.14.2
mount support
module-init-tools 3.6
e2fsprogs 1.41.4
jfsutils 1.1.13
reiserfsprogs 3.6.21
xfsprogs 3.0.0
quota-tools 3.17.
PPP 2.4.4
Linux C Library 2.9
Dynamic linker (ldd) 2.9
Procps 3.2.7
Net-tools 1.60
Kbd 1.15
Sh-utils 7.1
wireless-tools 29
Modules Loaded loop btusb wacom nfs coretemp uinput af_packet bonding ipv6 cpufreq_ondemand bridge stp llc bnep rfcomm l2cap bluetooth snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss reiserfs xfs dm_mod nvram hangcheck_timer pciehp pci_hotplug nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs cpufreq_stats acpi_cpufreq freq_table w83627ehf hwmon_vid snd_hda_codec_atihdmi snd_hda_codec_analog firewire_ohci firewire_core crc_itu_t snd_hda_intel snd_hda_codec ata_generic snd_hwdep mptspi snd_pcm ohci1394 mptscsih pata_acpi i2c_i801 ahci iTCO_wdt snd_timer thermal pcspkr ieee1394 i2c_core mptbase iTCO_vendor_support libata snd evdev sg processor sky2 rtc_cmos soundcore scsi_transport_spi rtc_core snd_page_alloc tpm_infineon thermal_sys intel_agp tpm rtc_lib tpm_bios button hwmon ext2 scsi_wait_scan ohci_hcd usb_storage sd_mod crc_t10dif
--
Robin Hugh Johnson
Gentoo Linux Developer & Infra Guy
E-Mail : [email protected]
GnuPG FP : 11AC BA4F 4778 E3F6 E4ED F38E B27B 944E 3488 4E85
On Sat, Mar 14, 2009 at 02:39:47PM -0700, Robin H. Johnson wrote:
> Strace gives me this fun in the end:
> delete_module("button", O_RDONLY|O_EXCL|O_NONBLOCK
> and it just sits there.
Ok, after much head-scratching and bisect-powered reboots I have
disproved for myself that this is a kernel issue.
Instead it's some weird interaction between certain BIOS settings on my
motherboard (ASUS P5Q Premium) and my SCSI controller (HP SC11Xe,
FusionMPT based) I use for tape specifically when there are no SCSI
devices on the bus. Skipping the mptspi module, or connecting a SCSI
device causes the problem to go away, ditto changing some settings in
the BIOS that cause IRQs to be allocated differently.
--
Robin Hugh Johnson
Gentoo Linux Developer & Infra Guy
E-Mail : [email protected]
GnuPG FP : 11AC BA4F 4778 E3F6 E4ED F38E B27B 944E 3488 4E85