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Date: Wed, 3 Apr 2013 21:11:16 +0200 From: "Stefan Lippers-Hollmann" <s.L-H@....de> To: "Greg Kroah-Hartman" <gregkh@...uxfoundation.org> Cc: Sven Joachim <svenjoac@....de>, Eric Dumazet <eric.dumazet@...il.com>, linux-kernel@...r.kernel.org, stable@...r.kernel.org, Ding Tianhong <dingtianhong@...wei.com>, Eric Dumazet <edumazet@...gle.com>, "David S. Miller" <davem@...emloft.net> Subject: Re: [ 105/124] af_unix: dont send SCM_CREDENTIAL when dest socket is NULL Hi On Wednesday 03 April 2013, Greg Kroah-Hartman wrote: > On Wed, Apr 03, 2013 at 05:10:40PM +0200, Sven Joachim wrote: > > On 2013-04-03 16:00 +0200, Eric Dumazet wrote: > > > On Wed, 2013-04-03 at 13:41 +0200, Sven Joachim wrote: > > >> On 2013-04-03 00:11 +0200, Greg Kroah-Hartman wrote: > > >> > 3.8-stable review patch. If anyone has any objections, please let me know. > > >> > > >> I'm seeing several complaints from udevd at boot in both 3.8.6-rc1 and > > >> 3.9-rc5: "udevd[56]: sender uid=65534, message ignored". Reverting the > > >> patch below on top of 3.8.6-rc1 fixes that. I'm using udev version 175 > > >> here, and 65534 is the uid of user "nobody". […] I can reproduce this issue on several systems with a Debian unstable (udev 175, same version as in the upcoming Debian 7.0 'wheezy') userland. Reverting only this patch from 3.8.6-rc1 avoids the problem. > > > It might be a wrong sender (application bug or bad identity), and udevd > > > correctly discards the incoming message. > > > > How would I find out the culprit? > > Try running 'udevadm monitor' as root and see if something shows up > there. There are no re-occuring messages on an idle system, connecting a USB stick (not mounting) results in these messages. broken (3.8.6-rc1, with "af_unix: dont send SCM_CREDENTIAL when dest socket is NULL" applied): KERNEL[11739.713368] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1 (usb) KERNEL[11739.713514] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0 (usb) UDEV [11739.713663] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1 (usb) KERNEL[11739.713677] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7 (scsi) KERNEL[11739.713688] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/scsi_host/host7 (scsi_host) UDEV [11739.713734] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0 (usb) UDEV [11739.713797] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7 (scsi) UDEV [11739.713893] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/scsi_host/host7 (scsi_host) UDEV [11739.718583] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1 (usb) UDEV [11739.720709] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0 (usb) UDEV [11739.720900] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7 (scsi) UDEV [11739.721191] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/scsi_host/host7 (scsi_host) KERNEL[11740.747996] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0 (scsi) KERNEL[11740.748032] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0 (scsi) KERNEL[11740.748042] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/scsi_disk/7:0:0:0 (scsi_disk) KERNEL[11740.748048] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/scsi_device/7:0:0:0 (scsi_device) KERNEL[11740.748103] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/scsi_generic/sg5 (scsi_generic) UDEV [11740.748129] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0 (scsi) KERNEL[11740.748146] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/bsg/7:0:0:0 (bsg) UDEV [11740.748251] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0 (scsi) UDEV [11740.748349] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0 (scsi) UDEV [11740.748459] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/scsi_disk/7:0:0:0 (scsi_disk) UDEV [11740.748533] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/scsi_device/7:0:0:0 (scsi_device) UDEV [11740.748910] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/scsi_generic/sg5 (scsi_generic) UDEV [11740.749039] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/bsg/7:0:0:0 (bsg) UDEV [11740.750204] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0 (scsi) UDEV [11740.750531] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/scsi_disk/7:0:0:0 (scsi_disk) UDEV [11740.750652] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/scsi_device/7:0:0:0 (scsi_device) UDEV [11740.751143] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/bsg/7:0:0:0 (bsg) UDEV [11740.751323] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/scsi_generic/sg5 (scsi_generic) KERNEL[11740.943534] add /devices/virtual/bdi/8:80 (bdi) UDEV [11740.943700] add /devices/virtual/bdi/8:80 (bdi) UDEV [11740.943807] add /devices/virtual/bdi/8:80 (bdi) KERNEL[11740.987877] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/block/sdf (block) KERNEL[11740.987921] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/block/sdf/sdf1 (block) UDEV [11740.988152] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/block/sdf (block) UDEV [11740.988307] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/block/sdf/sdf1 (block) UDEV [11741.047184] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/block/sdf (block) UDEV [11741.104796] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host7/target7:0:0/7:0:0:0/block/sdf/sdf1 (block) working (3.8.6-rc1, with "af_unix: dont send SCM_CREDENTIAL when dest socket is NULL" reverted): KERNEL[637.018561] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1 (usb) KERNEL[637.018607] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0 (usb) UDEV [637.023544] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1 (usb) KERNEL[637.028060] add /module/usb_storage (module) UDEV [637.028268] add /module/usb_storage (module) KERNEL[637.028293] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6 (scsi) KERNEL[637.028332] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/scsi_host/host6 (scsi_host) KERNEL[637.028364] add /bus/usb/drivers/usb-storage (drivers) UDEV [637.028586] add /bus/usb/drivers/usb-storage (drivers) UDEV [637.028614] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0 (usb) UDEV [637.028910] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6 (scsi) UDEV [637.029294] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/scsi_host/host6 (scsi_host) KERNEL[638.062158] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0 (scsi) KERNEL[638.062191] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0 (scsi) KERNEL[638.062238] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/scsi_disk/6:0:0:0 (scsi_disk) KERNEL[638.062280] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/scsi_device/6:0:0:0 (scsi_device) KERNEL[638.062347] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/scsi_generic/sg5 (scsi_generic) KERNEL[638.062410] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/bsg/6:0:0:0 (bsg) UDEV [638.062455] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0 (scsi) UDEV [638.064574] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0 (scsi) UDEV [638.064941] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/scsi_disk/6:0:0:0 (scsi_disk) UDEV [638.064974] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/scsi_device/6:0:0:0 (scsi_device) UDEV [638.065568] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/bsg/6:0:0:0 (bsg) UDEV [638.065766] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/scsi_generic/sg5 (scsi_generic) KERNEL[638.257660] add /devices/virtual/bdi/8:80 (bdi) UDEV [638.258029] add /devices/virtual/bdi/8:80 (bdi) KERNEL[638.301820] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/block/sdf (block) KERNEL[638.301864] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/block/sdf/sdf1 (block) UDEV [638.361377] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/block/sdf (block) UDEV [638.420664] add /devices/pci0000:00/0000:00:1a.0/usb7/7-1/7-1.1/7-1.1:1.0/host6/target6:0:0/6:0:0:0/block/sdf/sdf1 (block) > I can't reproduce this here, running a newer version of udev (195), > sorry, I don't have any systems with older udev releases. > > Note, someone else posted this same error earlier today on the linux-usb > mailing list, saying that USB storage devices would not automount > anymore. Does that work properly for you? Yes, this patch breaks automounting or USB devices under KDE 4.8.4. Regards Stefan Lippers-Hollmann -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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