2.6.18-rc strange hotplug/udev/uevent problem

From: Andrew Clayton
Date: Mon Aug 07 2006 - 15:30:18 EST

Next message: H. Peter Anvin: "Re: Linux v2.6.18-rc4"
Previous message: Sam Ravnborg: "[GIT PATCH] kbuild fixes for 2.6.18"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Hi,

Got a weird problem here.

On x86 Fedora Core 5 with 2.6.17 with GNOME, plugging in a usb stick would result in it being mounted. With 2.6.18-rc this no longer occurs. FC5 got an update to hal to work with 2.6.18 kernels, but it don't work for me. I'm having the same problem on 3 x86 FC5 machines.

The weird thing is, this all works on my x86-64 FC5 workstation with 2.6.18-rc both before and after the hal update.

Anyway I submitted a bug report against HAL suspecting it broken

https://bugs.freedesktop.org/show_bug.cgi?id=7756

Perhaps not. So I turn my attention more to the kernel.

2.6.17 was working fine. You could plug/unplug/plug a USB memory stick and it would get mounted each time.

2.6.18-rc[23] works the same as above on my x86-64 FC5 box.

2.6.18-rc[23] and 2.6.18-rc3-git7 on x86 built with usb/scsi/sd/vfat/nls_* built as modules will mount on the first plug but not subsequent plugs.

If you rmmod the sd_mod module and plug in, then it will get mounted.

When the kernel is built non-modular then plugging in will not mount it. If you boot with the device plugged in then when you log into GNOME it will be mounted. But subsequent unmount/plug ins will not get it mounted.

The following is from the udevmonitor program running under 2.6.18-rc built modular.

Plugging device in with sd_mod not loaded.

UEVENT[1154789226.207797] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2
UEVENT[1154789226.207985] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/usbdev1.11_ep00
UEVENT[1154789226.210770] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0
UDEV [1154789226.210770] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2
UEVENT[1154789226.211037] add@/class/scsi_host/host9
UEVENT[1154789226.211097] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/usbdev1.11_ep81
UEVENT[1154789226.211157] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/usbdev1.11_ep02
UEVENT[1154789226.211215] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/usbdev1.11
UDEV [1154789226.211690] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/usbdev1.11_ep00
UDEV [1154789226.452013] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/usbdev1.11
UDEV [1154789226.956997] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0
UDEV [1154789226.959419] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/usbdev1.11_ep81
UDEV [1154789226.959466] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/usbdev1.11_ep02
UDEV [1154789226.959875] add@/class/scsi_host/host9
UEVENT[1154789231.647515] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/host9/target9:0:0/9:0:0:0
UDEV [1154789231.647515] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/host9/target9:0:0/9:0:0:0
UEVENT[1154789231.647570] add@/class/scsi_device/9:0:0:0
UEVENT[1154789231.749919] add@/module/sd_mod
UEVENT[1154789231.751494] add@/bus/scsi/drivers/sd
UEVENT[1154789231.752839] add@/class/scsi_disk/9:0:0:0
UDEV [1154789231.753751] add@/class/scsi_disk/9:0:0:0
UEVENT[1154789231.832312] add@/block/sda
UEVENT[1154789231.834681] add@/block/sda/sda1
UDEV [1154789231.836590] add@/class/scsi_device/9:0:0:0
UDEV [1154789231.933474] add@/block/sda
UDEV [1154789232.106892] add@/block/sda/sda1
UEVENT[1154789235.937510] mount@/block/sda/sda1
UDEV [1154789235.937510] mount@/block/sda/sda1

Plugging device in with sd_mod loaded.

UEVENT[1154789359.096963] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2
UDEV [1154789359.096963] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2
UEVENT[1154789359.097052] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/usbdev1.12_ep00
UDEV [1154789359.098126] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/usbdev1.12_ep00
UEVENT[1154789359.100369] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0
UEVENT[1154789359.100418] add@/class/scsi_host/host10
UEVENT[1154789359.100427] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/usbdev1.12_ep81
UEVENT[1154789359.100435] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/usbdev1.12_ep02
UEVENT[1154789359.100444] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/usbdev1.12
UDEV [1154789359.106148] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/usbdev1.12
UDEV [1154789359.187500] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0
UDEV [1154789359.189198] add@/class/scsi_host/host10
UDEV [1154789359.190078] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/usbdev1.12_ep81
UDEV [1154789359.191020] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/usbdev1.12_ep02
UEVENT[1154789364.540249] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/host10/target10:0:0/10:0:0:0
UDEV [1154789364.540249] add@/devices/pci0000:00/0000:00:11.2/usb1/1-2/1-2:1.0/host10/target10:0:0/10:0:0:0
UEVENT[1154789364.540355] add@/class/scsi_disk/10:0:0:0
UDEV [1154789364.541272] add@/class/scsi_disk/10:0:0:0
UEVENT[1154789364.586896] add@/block/sda
UEVENT[1154789364.586954] add@/block/sda/sda1
UEVENT[1154789364.586963] add@/class/scsi_device/10:0:0:0
UDEV [1154789364.598962] add@/class/scsi_device/10:0:0:0
UDEV [1154789364.719350] add@/block/sda
UDEV [1154789364.874149] add@/block/sda/sda1

No mount events here, this is similar output to the non-modular case..

Here's udevmonitor output from my x86-64 FC5 2.6.18-rc[23]

UEVENT[1154510664.116702] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8
UEVENT[1154510664.116905] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/usbdev1.12_ep00
UEVENT[1154510664.116911] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/1-8:1.0
UEVENT[1154510664.116915] add@/class/scsi_host/host12
UEVENT[1154510664.116919] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/1-8:1.0/usbdev1.12_ep81
UEVENT[1154510664.116924] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/1-8:1.0/usbdev1.12_ep02
UEVENT[1154510664.116928] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/1-8:1.0/usbdev1.12_ep83
UEVENT[1154510664.116932] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/usbdev1.12
UDEV [1154510664.200847] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8
UDEV [1154510664.364513] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/usbdev1.12_ep00
UDEV [1154510664.371420] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/usbdev1.12
UDEV [1154510664.631746] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/1-8:1.0
UDEV [1154510664.652152] add@/class/scsi_host/host12
UDEV [1154510664.776377] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/1-8:1.0/usbdev1.12_ep81
UDEV [1154510664.785827] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/1-8:1.0/usbdev1.12_ep02
UDEV [1154510664.795277] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/1-8:1.0/usbdev1.12_ep83
UEVENT[1154510669.116889] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/1-8:1.0/host12/target12:0:0/12:0:0:0
UEVENT[1154510669.116915] add@/class/scsi_disk/12:0:0:0
UDEV [1154510669.118308] add@/devices/pci0000:00/0000:00:10.4/usb1/1-8/1-8:1.0/host12/target12:0:0/12:0:0:0
UDEV [1154510669.136236] add@/class/scsi_disk/12:0:0:0
UEVENT[1154510670.246094] add@/block/sdb
UEVENT[1154510670.246115] add@/block/sdb/sdb1
UEVENT[1154510670.246119] add@/class/scsi_device/12:0:0:0
UDEV [1154510670.250690] add@/class/scsi_device/12:0:0:0
UDEV [1154510670.383650] add@/block/sdb
UDEV [1154510670.555570] add@/block/sdb/sdb1
UEVENT[1154510671.433544] mount@/block/sdb/sdb1
UDEV [1154510671.434129] mount@/block/sdb/sdb1

I guess the next thing is to try and narrow down when this started, but as that could take some time, I'm posting this now.

Cheers,

Andrew
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

Next message: H. Peter Anvin: "Re: Linux v2.6.18-rc4"
Previous message: Sam Ravnborg: "[GIT PATCH] kbuild fixes for 2.6.18"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]