1. multiple gets from philips webcams panics the kernel
2. after grabbing images from a webcam for a while, the kernel panics
in an interrupt hanging the whole system.
The cam is a philips.
I've contacted the author of the driver, but as far as he can see, it
is not a problem in his driver.
3. kernel usb
4.
marlboro:~# cat /proc/version
Linux version 2.2.14 (root@marlboro) (gcc version egcs-2.91.66
19990314/Linux (egcs-1.1.2 release)) #1 SMP Sun Mar 19 18:29:22 GMT+1
2000
5.
That's a bit of a problem. The oops scrolls off the screen so I cannot
really write down what happens. I did the kmsgdump-patch (including some
hacking - it doesn't patch cleanly) but it is not writing anything at
all to the disk.
6.
#!/usr/bin/perl
for(;;)
{
$dummy = `vidcat -s 352x288 -f jpeg -q 100 > /dummy.jpg`;
}
vidat is from the w3cam package. it queries the cam and writes one image
to stdio
7.1
(this is almost out-of-the-box slackware 7.0 system)
-- Versions installed: (if some fields are empty or looks
-- unusual then possibly you have very old versions)
Linux marlboro 2.2.14 #1 SMP Sun Mar 19 18:29:22 GMT+1 2000 i686 unknown
Kernel modules 2.1.121
Gnu C egcs-2.91.66
Binutils 2.9.1.0.25
Linux C Library ..
Dynamic Linker (ld.so) 1.9.9
Procps 2.0.2
Mount 2.9v
Net-tools (1999-04-20)
Kbd 0.99
Sh-utils 1.16
7.2
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 3
model name : Pentium II (Klamath)
stepping : 4
cpu MHz : 300.688276
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
mmx
bogomips : 299.83
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 3
model name : Pentium II (Klamath)
stepping : 4
cpu MHz : 300.688276
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
mmx
bogomips : 299.83
7.3
pwc-4.1-smp 154408 0 (unused)
videodev 2368 1 [pwc-4.1-smp]
usb-uhci 17504 0 (unused)
usbcore 42376 0 [pwc-4.1-smp usb-uhci]
serial 19284 1 (autoclean)
es1370 24716 1
soundcore 2340 4 [es1370]
aha152x 29688 0 (unused)
nls_iso8859-1 2020 1 (autoclean)
nls_cp437 3548 1 (autoclean)
vfat 9116 1 (autoclean)
fat 30176 1 (autoclean) [vfat]
7.4
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: RICOH Model: MP6200S Rev: 2.20
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 06 Lun: 00
Vendor: IBM Model: DCAS-34330 Rev: S65A
Type: Direct-Access ANSI SCSI revision: 02
7.5/X. kernel is 2.2.14 with the usb for 2.3.50 backported to 2.2.14
patch
CPU0 CPU1
0: 36232 103487 IO-APIC-edge timer
1: 814 2298 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
4: 4 2 IO-APIC-edge serial
8: 0 1 IO-APIC-edge rtc
11: 7 8 IO-APIC-edge aha152x
12: 13305 15570 IO-APIC-edge PS/2 Mouse
13: 1 0 XT-PIC fpu
17: 489 445 IO-APIC-level es1370
18: 2418 2546 IO-APIC-level eth0
19: 7575 8029 IO-APIC-level aic7xxx, usb-uhci
NMI: 0
ERR: 0
So the USB seems to be on the same irq as the scsi-device. I cannot
change
this in any way trough the bios. The problem still occurs if I disable
the
usb-IRQ trough in the bios.
/proc/mtrr:
marlboro:/proc# cat mtrr
reg00: base=0x00000000 ( 0MB), size= 128MB: write-back, count=1
messages in log when inserting the three usbrelated modules:
Mar 19 19:52:31 marlboro kernel: usb.c: registered new driver usbdevfs
Mar 19 19:52:31 marlboro kernel: usb.c: registered new driver hub
Mar 19 19:52:31 marlboro kernel: usb-uhci.c: version v1.184 time
18:36:59 Mar 19 2000
Mar 19 19:52:31 marlboro kernel: usb.c: new USB bus registered, assigned
bus number 1
Mar 19 19:52:31 marlboro kernel: usb.c: USB new device connect, assigned
device number 1
Mar 19 19:52:31 marlboro kernel: usb.c: new device strings: Mfr=0,
Product=0, SerialNumber=0
Mar 19 19:52:31 marlboro kernel: hub.c: USB hub found
Mar 19 19:52:31 marlboro kernel: hub.c: 2 ports detected
Mar 19 19:52:31 marlboro kernel: Linux video capture interface: v1.00
Mar 19 19:52:32 marlboro kernel: Philips PCA645/646 + PCVC675/680 webcam
module version 4.1 PPro (SMP) loaded.
Mar 19 19:52:32 marlboro kernel: Also supports Askey OEM cams.
Mar 19 19:52:32 marlboro kernel: Default framerate set to 30.
Mar 19 19:52:32 marlboro kernel: Default image size set to cif
[352x288].
Mar 19 19:52:32 marlboro kernel: usb.c: registered new driver Philips
webcam
Mar 19 19:52:32 marlboro kernel: usb.c: USB new device connect, assigned
device number 2
Mar 19 19:52:33 marlboro kernel: usb.c: new device strings: Mfr=0,
Product=0, SerialNumber=1
Mar 19 19:52:34 marlboro kernel: usb.c: USB device number 2 default
language ID 0x409
when grabbing I frequently get messages like:
Mar 19 19:28:00 marlboro kernel: pwc frame buffer underflow (15439);
discarded.
Mar 19 19:28:01 marlboro kernel: pwc frame buffer overflow (flen = 773).
when I remove the modules after some grabbing, the following messages
appear:
Mar 19 20:03:53 marlboro kernel: kmem_shrink: Invalid cache addr
c7fefc20
Mar 19 20:03:53 marlboro kernel: kmem_destroy: Can't free all objects
c7fefc20
Mar 19 20:03:53 marlboro kernel: usb-uhci.c: uhci_desc_kmem remained
Mar 19 20:03:53 marlboro kernel: kmem_shrink: Invalid cache addr
c7fefc80
Mar 19 20:03:53 marlboro kernel: kmem_destroy: Can't free all objects
c7fefc80
Mar 19 20:03:53 marlboro kernel: usb-uhci.c: urb_priv_kmem remained
Mobo is a Asus P2L97-DS with 2 P-II's on 300MHz.
-- ------------------------------------------------------------ Folkert van Heusden http://www.vanheusden.com/ some e-mail addresses: f.v.heusden@ftr.nl, flok99@dds.nl mobile phone: +31-6-22390057- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Mar 23 2000 - 21:00:27 EST