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Date: Thu, 7 Feb 2013 15:40:25 +0100 From: Sedat Dilek <sedat.dilek@...il.com> To: Tejun Heo <tj@...nel.org> Cc: Stephen Rothwell <sfr@...b.auug.org.au>, linux-next@...r.kernel.org, linux-kernel@...r.kernel.org, Al Viro <viro@...iv.linux.org.uk>, "Eric W. Biederman" <ebiederm@...ssion.com>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: linux-next: Tree for Feb 7 (fakeroot BROKEN due to SYSV IPC support?) On Thu, Feb 7, 2013 at 2:39 PM, Sedat Dilek <sedat.dilek@...il.com> wrote: > On Thu, Feb 7, 2013 at 12:52 PM, Sedat Dilek <sedat.dilek@...il.com> wrote: >> On Thu, Feb 7, 2013 at 12:14 PM, Eric W. Biederman >> <ebiederm@...ssion.com> wrote: >>> Sedat Dilek <sedat.dilek@...il.com> writes: >>> >>>> On Thu, Feb 7, 2013 at 11:20 AM, Sedat Dilek <sedat.dilek@...il.com> wrote: >>>>> On Thu, Feb 7, 2013 at 10:38 AM, Sedat Dilek <sedat.dilek@...il.com> wrote: >>>>>> On Thu, Feb 7, 2013 at 7:37 AM, Stephen Rothwell <sfr@...b.auug.org.au> wrote: >>>>>>> Hi all, >>>>>>> >>>>>>> Changes since 20130206: >>>>>>> >>>>>>> Removed tree: kvmtool (still present via the tip tree) >>>>>>> >>>>>>> The block tree lost its build failure. >>>>>>> >>>>>>> The tip tree gained a conflict against the s390 tree. >>>>>>> >>>>>>> The kvm tree gained a conflict against Linus' tree. >>>>>>> >>>>>>> The tty tree lost its build failure. >>>>>>> >>>>>>> The arm-soc tree gained conflicts against the iommu tree. >>>>>>> >>>>>>> The signal tree gained a conflict against the s390 tree. >>>>>>> >>>>>>> The akpm tree gained a conflict against the kvm tree and lost its build >>>>>>> failure. >>>>>>> >>>>>>> ---------------------------------------------------------------------------- >>>>>>> >>>>>> >>>>>> My build-script uses fakeroot and does no more start: >>>>>> >>>>>> $ ./scripts/build_linux-next.sh >>>>>> make options ...... CC=gcc-4.6 -j4 >>>>>> KBUILD_BUILD_USER=sedat.dilek@...il.com >>>>>> LOCALVERSION=-next20130207-2-iniza-small >>>>>> dep-pkg options ... KDEB_PKGVERSION=3.8.0~rc6~next20130207-2~iniza+dileks1 >>>>>> fakeroot, while creating message channels: Invalid argument >>>>>> This may be due to a lack of SYSV IPC support. >>>>>> fakeroot: error while starting the `faked' daemon. >>>>>> kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec >>>>>> ... or kill -l [sigspec] >>>>>> >>>>>> >>>>>> Any hints? >>>>>> ( I could run strace... ) >>>>>> >>>>>> - Sedat - >>>>> >>>>> Attached strace outputs within yesterday's (GOOD) and today's (BAD) Linux-Next. >>>>> >>>>> - Sedat - >>>> >>>> [ CCing Al and Eric ] >>>> >>>> I compared quickly the diff between the -next versions and saw changes >>>> coming from signal and userns trees. >>>> ( Sorry for re-attaching the strace outputs. ) >>> >>> It has been about a week and a half since I have pushed anything into >>> the userns tree, and I don't have anything ipc related in my tree. >>> So the reason for the suspicion seems odd. >>> >>> The straces are useless because all they show is that fakeroot was >>> forked, but there is not a trace of fakeroot itself. >>> >>> Given the timing my initial suspect would be the idr_preload patches >>> from Tejun that were merged via Andrew's akpm tree. I didn't see >>> anything in there that would kill ipc but that is likely the most recent >>> touch to the ipc code. >>> >> >> [ CCing Tejun ] >> >> Hmm, still stepping in the dark... >> >> OK, fakeroot does PRELOADing so your assumption makes sense. >> >> How can I trigger fakeroot calls? >> Here I have... >> /usr/bin/faked-sysv >> /usr/bin/faked-tcp >> >> I think that is the main commit but I am not sure if I can revert the >> idr_preload part, otherwise it gets complicated: >> >> commit e2802c2defba1e5c88d7d168eb5c66813c86f249 >> "idr: implement idr_preload[_end]() and idr_alloc()" >> >> $ grep idr ../Linux-Next-v20130206-VS-v20130207.diff | grep ^'++Applying:' >> ++Applying: block: fix ext_devt_idr handling >> ++Applying: idr: fix a subtle bug in idr_get_next() >> ++Applying: nfsd: idr_destroy() no longer needs idr_remove_all() >> ++Applying: idr: cosmetic updates to struct / initializer definitions >> ++Applying: idr: relocate idr_for_each_entry() and reorganize id[r|a]_get_new() >> ++Applying: idr: remove _idr_rc_to_errno() hack >> ++Applying: idr: refactor idr_get_new_above() >> ++Applying: idr: implement idr_preload[_end]() and idr_alloc() >> ++Applying: block: convert to idr_alloc() >> ++Applying: block/loop: convert to idr_alloc() >> ++Applying: atm/nicstar: convert to idr_alloc() >> ++Applying: drbd: convert to idr_alloc() >> ++Applying: dca: convert to idr_alloc() >> ++Applying: dmaengine: convert to idr_alloc() >> ++Applying: firewire: convert to idr_alloc() >> ++Applying: gpio: convert to idr_alloc() >> ++Applying: drm: convert to idr_alloc() >> ++Applying: drm/exynos: convert to idr_alloc() >> ++Applying: drm/i915: convert to idr_alloc() >> ++Applying: drm/sis: convert to idr_alloc() >> ++Applying: drm/via: convert to idr_alloc() >> ++Applying: drm/vmwgfx: convert to idr_alloc() >> ++Applying: i2c: convert to idr_alloc() >> ++Applying: IB/core: convert to idr_alloc() >> ++Applying: IB/amso1100: convert to idr_alloc() >> ++Applying: IB/cxgb3: convert to idr_alloc() >> ++Applying: IB/cxgb4: convert to idr_alloc() >> ++Applying: IB/ehca: convert to idr_alloc() >> ++Applying: IB/ipath: convert to idr_alloc() >> ++Applying: IB/mlx4: convert to idr_alloc() >> ++Applying: IB/ocrdma: convert to idr_alloc() >> ++Applying: IB/qib: convert to idr_alloc() >> ++Applying: dm: convert to idr_alloc() >> ++Applying: memstick: convert to idr_alloc() >> ++Applying: mfd: convert to idr_alloc() >> ++Applying: misc/c2port: convert to idr_alloc() >> ++Applying: misc/tifm_core: convert to idr_alloc() >> ++Applying: mmc: convert to idr_alloc() >> ++Applying: mtd: convert to idr_alloc() >> ++Applying: macvtap: convert to idr_alloc() >> ++Applying: ppp: convert to idr_alloc() >> ++Applying: power: convert to idr_alloc() >> ++Applying: pps: convert to idr_alloc() >> ++Applying: remoteproc: convert to idr_alloc() >> ++Applying: rpmsg: convert to idr_alloc() >> ++Applying: scsi/bfa: convert to idr_alloc() >> ++Applying: scsi: convert to idr_alloc() >> ++Applying: target/iscsi: convert to idr_alloc() >> ++Applying: scsi/lpfc: convert to idr_alloc() >> ++Applying: thermal: convert to idr_alloc() >> ++Applying: uio: convert to idr_alloc() >> ++Applying: vfio: convert to idr_alloc() >> ++Applying: dlm: convert to idr_alloc() >> ++Applying: inotify: convert to idr_alloc() >> ++Applying: ocfs2: convert to idr_alloc() >> ++Applying: ipc: convert to idr_alloc() >> ++Applying: cgroup: convert to idr_alloc() >> ++Applying: events: convert to idr_alloc() >> ++Applying: posix-timers: convert to idr_alloc() >> ++Applying: net/9p: convert to idr_alloc() >> ++Applying: mac80211: convert to idr_alloc() >> ++Applying: sctp: convert to idr_alloc() >> ++Applying: nfs4client: convert to idr_alloc() >> >> - Sedat - >> >> [1] http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=commitdiff;h=e2802c2defba1e5c88d7d168eb5c66813c86f249 >> >>> Eric > > Hi Tejun, > > Eric was right that your idr_preload/idr_alloc patches from mmotm-tree > in Linux-Next (next-20130207) caused that fakeroot crazyness. > > I can't say if the whole series is BORKED or the IPC part. > Changelog in [1] says "compile-tested-only" :-). > > commitdiff aebcb5a5f97e6e567bdd1b2651253de073afa572 > "ipc: convert to idr_alloc()" > This ^^^^^ seems to be the culprit commit! I just reverted this one and I could compile my kernels again with fakeroot! - Sedat - > Reverting the series let me build my kernels with fakeroot! > > Tejun, can you have a look at this? > Thanks! > > Thank you Eric for the hints and sorry for my wrong suspicions. > > Please, have a look at the attachments. > > Regards, > - Sedat - > > [1] http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=commitdiff;h=aebcb5a5f97e6e567bdd1b2651253de073afa572 View attachment "strace_3.8.0-rc6-next20130207-3-iniza-small.txt" of type "text/plain" (10137 bytes) Download attachment "3.8.0-rc6-next20130207-3-iniza-small.patch" of type "application/octet-stream" (4032 bytes)
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