Date:	Tue, 16 Jul 2013 10:28:02 +0200
From:	Philipp Hahn <pmhahn@...ahn.de>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Rusty Russell <rusty@...tcorp.com.au>, alsa-devel@...a-project.org,
	Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Lucas De Marchi" <lucas.demarchi@...fusion.mobi>
Subject: Re: [alsa-devel] [BUG] 3.10.[01] modprobe snd-... hangs

Hello,

Am Dienstag 16 Juli 2013, 08:43:36 schrieb Takashi Iwai:
> At Tue, 16 Jul 2013 15:11:51 +0930, Rusty Russell wrote:
> > Philipp Matthias Hahn <pmhahn@...ahn.de> writes:
> > > My x86_64 systems has some trouble loading some ALSA snd-* modules since
> > > the upgrade to 3.10.[01]: Several automatic modprobe calls hang, but
> > > loading snd-intel-hda and snd-audio-usb by hand still works.
> > 
> > Not a known problem to me, at least.  Perhaps it's a dep loop somehow.
> 
> I remember that someone reported it being Debian specific snd-seq-oss
> loading stuff.

FYI: "oss-compat" is installed.

> > > ...
> > >  1071 ?        S      0:00 sh -c /sbin/modprobe --ignore-install snd && { /sbin/modprobe --quiet snd
> > >  1080 ?        D      0:00  \_ /sbin/modprobe --quiet snd-seq
> > 
> > This was first, and it's waiting.  Which means it must be doing
> > something weird, because snd_seq_oss is loading now:
> > 
> > > snd_seq_oss 33717 1 - Loading 0xffffffffa041b000
> > 
> > Perhaps in the tangle of modprobe install commands somewhere this gets
> > invoked?
> 
> Likely, but I wonder what triggered a bug suddenly on 3.10.
> There is absolutely no change in sound/core/seq/*, and through a quick
> look, I couldn't find any suspicious change in kernel/module.c that
> may lead to this problem between 3.9 and 3.10.
> 
> Philipp, can you get a sysrq-T trace while the stall?

I've finally been able to reducte the number of processes to get a full trace; see attached file.

Please note that in this case the proprietary "nvidia" module was loaded, since I currently onyl have remove access to the machine.
The original trace from yesterday happend without the nvidia module ever being loaded.

Am Dienstag 16 Juli 2013, 08:42:35 schrieb Lucas De Marchi:
> On Tue, Jul 16, 2013 at 2:41 AM, Rusty Russell <rusty@...tcorp.com.au> wrote:
> First thing to check is the /etc/modprobe.d/*.conf file that contains
> these install commands. Did they change besides the kernel upgrade?

Not that I know of: Booting 3.9.9 works fine, 3.10.x shows the problem.

...
> Philipp, which kernel are you upgrading from?
I just upgraded from 3.9.9 to 3.10.0; also tried 3.10.1 which did not improve the situation.

> I don't see anything to
> blame in the changes for the past releases. Any chance a bad entry in
> your .conf was added too? You may want to paste the output of modprobe
> -c, at least until "# End of configuration files. Dumping indexes
> now:"

blacklist snd_pcsp
blacklist arkfb
blacklist aty128fb
blacklist atyfb
blacklist radeonfb
blacklist cirrusfb
blacklist cyber2000fb
blacklist gx1fb
blacklist gxfb
blacklist kyrofb
blacklist matroxfb_base
blacklist mb862xxfb
blacklist neofb
blacklist nvidiafb
blacklist pm2fb
blacklist pm3fb
blacklist s3fb
blacklist savagefb
blacklist sisfb
blacklist tdfxfb
blacklist tridentfb
blacklist viafb
blacklist vt8623fb
blacklist garmin_gps
blacklist nouveau
install binfmt_0000 /bin/true
install sound_slot_0 /sbin/modprobe snd-card-0
install sound_slot_1 /sbin/modprobe snd-card-1
install sound_slot_2 /sbin/modprobe snd-card-2
install sound_slot_3 /sbin/modprobe snd-card-3
install sound_slot_4 /sbin/modprobe snd-card-4
install sound_slot_5 /sbin/modprobe snd-card-5
install sound_slot_6 /sbin/modprobe snd-card-6
install sound_slot_7 /sbin/modprobe snd-card-7
install snd /sbin/modprobe --ignore-install snd && { /sbin/modprobe --quiet snd-ioctl32 ; /sbin/modprobe --quiet snd-seq ; : ; }
install snd_rawmidi /sbin/modprobe --ignore-install snd-rawmidi && { /sbin/modprobe --quiet snd-seq-midi ; : ; }
install snd_emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 && { /sbin/modprobe --quiet snd-emu10k1-synth ; : ; }
alias net_pf_16_proto_1 wire
alias net_pf_16_proto_3 ip_queue
alias net_pf_16_proto_8 scsi_transport_iscsi
alias net_pf_16_proto_9 audit
alias net_pf_16_proto_11 cn
alias net_pf_16_proto_13 ip6_queue
alias binfmt_204 binfmt_aout
alias binfmt_263 binfmt_aout
alias binfmt_264 binfmt_aout
alias binfmt_267 binfmt_aout
alias binfmt_387 binfmt_aout
alias block_major_3_* ide_generic
alias block_major_22_* ide_generic
alias block_major_33_* ide_generic
alias block_major_34_* ide_generic
alias block_major_37_* ide_tape
alias block_major_44_* ftl
alias block_major_46_* pcd
alias block_major_47_* pf
alias block_major_56_* ide_generic
alias block_major_57_* ide_generic
alias block_major_58_* lvm_mod
alias block_major_88_* ide_generic
alias block_major_89_* ide_generic
alias block_major_90_* ide_generic
alias block_major_91_* ide_generic
alias block_major_93_* nftl
alias block_major_97_* pg
alias char_major_10_1 psmouse
alias char_major_10_139 openprom
alias char_major_10_157 applicom
alias char_major_10_181 toshiba
alias char_major_10_183 hw_random
alias char_major_10_187 irnet
alias char_major_10_189 ussp
alias char_major_10_250 hci_vhci
alias char_major_13_0 joydev
alias char_major_13_1 joydev
alias char_major_13_2 joydev
alias char_major_13_3 joydev
alias char_major_13_32 mousedev
alias char_major_13_33 mousedev
alias char_major_13_34 mousedev
alias char_major_13_35 mousedev
alias char_major_13_63 mousedev
alias char_major_13_64 evdev
alias char_major_13_65 evdev
alias char_major_13_66 evdev
alias char_major_13_67 evdev
alias char_major_19_* cyclades
alias char_major_20_* cyclades
alias char_major_22_* pcxx
alias char_major_23_* pcxx
alias char_major_27_* ftape
alias char_major_34_* scc
alias char_major_35_* tclmidi
alias char_major_48_* riscom8
alias char_major_49_* riscom8
alias char_major_57_* esp
alias char_major_58_* esp
alias char_major_63_* kdebug
alias char_major_67_* coda
alias char_major_75_* specialix
alias char_major_76_* specialix
alias char_major_81_* videodev
alias char_major_83_* vtx
alias char_major_89_* i2c_dev
alias char_major_90_* mtdchar
alias char_major_96_* pt
alias char_major_97_* pg
alias char_major_107_* 3dfx
alias char_major_109_* lvm_mod
alias char_major_166_* cdc_acm
alias char_major_171_0 raw1394
alias char_major_171_1 video1394
alias char_major_171_2 dv1394
alias char_major_171_3 amdtp
alias char_major_180_* usbcore
alias char_major_195_* nvidia
alias char_major_200_* vxspec
alias char_major_202_* msr
alias char_major_203_* cpuid
alias char_major_206_* osst
alias char_major_208_* ussp
alias char_major_227_* tub3270
alias bt_proto_7 avdtp
alias cipcb0 cipcb
alias cipcb1 cipcb
alias cipcb2 cipcb
alias cipcb3 cipcb
alias dummy0 dummy
alias dummy1 dummy
alias plip0 plip
alias plip1 plip
alias slip0 slip
alias slip1 slip
alias tunl0 ipip
alias gre0 ip_gre
alias usbdevfs usbcore
alias char_major_195* nvidia
options snd_pcsp index=-2
options snd_usb_audio index=-2
options bt87x index=-2
options cx88_alsa index=-2
options snd_atiixp_modem index=-2
options snd_intel8x0m index=-2
options snd_via82xx_modem index=-2
options snd_hda_intel model=6stack-dig index=0
options snd_usb_audio index=1
options dvb_ttpci adapter_nr=1
options budget_ci adapter_nr=0
options nbd max_part=15
options nvidia NVreg_DeviceFileUID=0 NVreg_DeviceFileGID=44 NVreg_DeviceFileMode=0660
options libata force=noncq
options systemd log_target=kmsg
softdep uhci_hcd pre: ehci-hcd
softdep ohci_hcd pre: ehci-hcd
softdep snd_pcm post: snd-pcm-oss
softdep snd_mixer post: snd-mixer-oss
softdep snd_seq post: snd-seq-midi snd-seq-oss

# End of configuration files. Dumping indexes now:


Sincerely
Philipp
-- 
Philipp Hahn <pmhahn@...ahn.de>

View attachment "bug.snd.dmesg" of type "text/plain" (125750 bytes)

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