Re: af_unix udev startup regression

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On 04/05/2013 02:03 AM, Linus Torvalds wrote:
> [ Fixed odd legacy subject line that has nothing to do with the actual bug ]
> 
> Hmm. Can you double-check and verify that reverting that commit makes
> things work again for you?

reverting 14134f6584212d585b310ce95428014b653dfaf6 works.

14134f6584212d585b310ce95428014b653dfaf6 is already reverted in upstream.
(and sorry for so late reply)

> 
> Also, what's your distribution and setup? 

Fedora 16

Thanks,
Lai

> I'd like this to get
> verified, just to see that it's not some timing-dependent thing or a
> bisection mistake, but if so, then the LSB test-cases obviously have
> to be fixed, and the commit that causes the problem needs to be
> reverted. Test-cases count for nothing compared to actual users.
> 
>                 Linus
> 
> On Thu, Apr 4, 2013 at 9:17 AM, Lai Jiangshan <laijs@xxxxxxxxxxxxxx> wrote:
>> Hi, ALL
>>
>> I also encountered the same problem.
>>
>> git bisect:
>>
>> 14134f6584212d585b310ce95428014b653dfaf6 is the first bad commit
>> commit 14134f6584212d585b310ce95428014b653dfaf6
>> Author: dingtianhong <dingtianhong@xxxxxxxxxx>
>> Date:   Mon Mar 25 17:02:04 2013 +0000
>>
>>     af_unix: dont send SCM_CREDENTIAL when dest socket is NULL
>>
>>     SCM_SCREDENTIALS should apply to write() syscalls only either source or
>> destination
>>     socket asserted SOCK_PASSCRED. The original implememtation in
>> maybe_add_creds is wrong,
>>     and breaks several LSB testcases ( i.e.
>> /tset/LSB.os/netowkr/recvfrom/T.recvfrom).
>>
>>     Origionally-authored-by: Karel Srot <ksrot@xxxxxxxxxx>
>>     Signed-off-by: Ding Tianhong <dingtianhong@xxxxxxxxxx>
>>     Acked-by: Eric Dumazet <edumazet@xxxxxxxxxx>
>>     Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
>>
>> :040000 040000 ef0356cc0fc168a39c0f94cff0ba27c46c4d0048
>> ae34e59f235c379f04d6145f0103cccd5b3a307a M net
>>
>> ===========
>> Like Brian Gerst, no obvious bug, but the system can't boot, "service udev
>> start" fails when boot
>> (also DEBUG_PAGEALLOC=n, I did not try to test with it=y)
>>
>> [   11.022976] systemd[1]: udev-control.socket failed to listen on sockets:
>> Address already in use
>> [   11.023293] systemd[1]: Unit udev-control.socket entered failed state.
>> [   11.182478] systemd-readahead-replay[399]: Bumped block_nr parameter of
>> 8:16 to 16384. This is a temporary hack and should be removed one day.
>> [   14.473283] udevd[410]: bind failed: Address already in use
>> [   14.478630] udevd[410]: error binding udev control socket
>> [   15.201158] systemd[1]: udev.service: main process exited, code=exited,
>> status=1
>> [   16.900792] udevd[427]: error binding udev control socket
>> [   18.356484] EXT4-fs (sdb7): re-mounted. Opts: (null)
>> [   19.738401] systemd[1]: udev.service holdoff time over, scheduling
>> restart.
>> [   19.742494] systemd[1]: Job pending for unit, delaying automatic restart.
>> [   19.747764] systemd[1]: Unit udev.service entered failed state.
>> [   19.752303] systemd[1]: udev-control.socket failed to listen on sockets:
>> Address already in use
>> [   19.770723] udevd[459]: bind failed: Address already in use
>> [   19.771027] udevd[459]: error binding udev control socket
>> [   19.771175] udevd[459]: error binding udev control socket
>> [   19.813256] systemd[1]: udev.service: main process exited, code=exited,
>> status=1
>> [   19.914450] systemd[1]: udev.service holdoff time over, scheduling
>> restart.
>> [   19.918374] systemd[1]: Job pending for unit, delaying automatic restart.
>> [   19.923392] systemd[1]: Unit udev.service entered failed state.
>> [   19.923808] systemd[1]: udev-control.socket failed to listen on sockets:
>> Address already in use
>> [   19.943792] udevd[465]: bind failed: Address already in use
>> [   19.944056] udevd[465]: error binding udev control socket
>> [   19.944210] udevd[465]: error binding udev control socket
>> [   19.946071] systemd[1]: udev.service: main process exited, code=exited,
>> status=1
>> [   20.047524] systemd[1]: udev.service holdoff time over, scheduling
>> restart.
>> [   20.051939] systemd[1]: Job pending for unit, delaying automatic restart.
>> [   20.057539] systemd[1]: Unit udev.service entered failed state.
>> [   20.058069] systemd[1]: udev-control.socket failed to listen on sockets:
>> Address already in use
>> [   20.081141] udevd[467]: bind failed: Address already in use
>> [   20.087120] udevd[467]: error binding udev control socket
>> [   20.092040] udevd[467]: error binding udev control socket
>> [   20.096519] systemd[1]: udev.service: main process exited, code=exited,
>> status=1
>> [   20.184910] systemd[1]: udev.service holdoff time over, scheduling
>> restart.
>> [   20.189863] systemd[1]: Job pending for unit, delaying automatic restart.
>> [   20.195440] systemd[1]: Unit udev.service entered failed state.
>> [   20.196012] systemd[1]: udev-control.socket failed to listen on sockets:
>> Address already in use
>> [   20.220543] udevd[469]: bind failed: Address already in use
>> [   20.220584] udevd[469]: error binding udev control socket
>> [   20.220780] udevd[469]: error binding udev control socket
>> [   20.222830] systemd[1]: udev.service: main process exited, code=exited,
>> status=1
>> [   20.323906] systemd[1]: udev.service holdoff time over, scheduling
>> restart.
>> [   20.329170] systemd[1]: Job pending for unit, delaying automatic restart.
>> [   20.334785] systemd[1]: Unit udev.service entered failed state.
>> [   20.335318] systemd[1]: udev-control.socket failed to listen on sockets:
>> Address already in use
>> [   20.360255] udevd[471]: bind failed: Address already in use
>> [   20.360294] udevd[471]: error binding udev control socket
>> [   20.360401] udevd[471]: error binding udev control socket
>> [   20.362359] systemd[1]: udev.service: main process exited, code=exited,
>> status=1
>> [   20.463651] systemd[1]: udev.service holdoff time over, scheduling
>> restart.
>> [   20.468380] systemd[1]: Job pending for unit, delaying automatic restart.
>> [   20.473938] systemd[1]: Unit udev.service entered failed state.
>> [   20.474309] systemd[1]: udev-control.socket failed to listen on sockets:
>> Address already in use
>> [   20.488704] systemd[1]: udev.service start request repeated too quickly,
>> refusing to start.
>> [   20.504820] systemd[1]: udev-control.socket failed to listen on sockets:
>> Address already in use
>> [   20.510091] systemd[1]: udev.service start request repeated too quickly,
>> refusing to start.
>> [   20.511575] systemd[1]: Unit udev-kernel.socket entered failed state.
> 

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