Bug 13785 - strace ptests produce odd warnings
Summary: strace ptests produce odd warnings
Status: RESOLVED WONTFIX
Alias: None
Product: OE-Core
Classification: Build System, Metadata & Runtime
Component: devtools / tool chain (show other bugs)
Version: 3.1
Hardware: All x86_64
: Medium normal
Target Milestone: 4.3
Assignee: Randy MacLeod
QA Contact:
URL:
Whiteboard: backport 3.1
Depends on:
Blocks:
 
Reported: 2020-02-06 23:01 UTC by Randy MacLeod
Modified: 2023-05-08 14:39 UTC (History)
4 users (show)

See Also:
OS type for building Yocto: ---
Type of Regression: ---
Verified:
Documentation change: No (bug/feature does not impact docs)

Attachments
strace ptest log (62.40 KB, text/x-log)
2020-02-06 23:01 UTC, Randy MacLeod 		no flags Details
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Description Randy MacLeod 2020-02-06 23:01:47 UTC 
Created attachment 4632 [details]
strace ptest log

Using oe-core, on HEAD = 6f6a6bbac6  but likely any commit since sometime in 3.0
Build core-image-minimal with conf/local.conf containing:


PASS: chown.gen.test
SKIP: chown32.gen.test
PASS: chroot.gen.test
[   16.451189] capability: warning: `caps' uses deprecated v2 capabilities in a way that may be insecure
[   16.452897] capability: warning: `caps' uses 32-bit capabilities (legacy support in use)
[   17.067693] futex_wake_op: futex tries to shift op by -849; fix this program
[   17.068928] futex_wake_op: futex tries to shift op by -849; fix this program
...
[   17.083682] futex_wake_op: futex tries to shift op by -518; fix this program

...

Full log attached.

The warning is from linux.git/kernel/futex.c -- commit e78c38f6bdd90
and it seems that the kernel developers think that strace should be fixed.
I can reproduce the problem on strace.git/master on my Ubuntu-19.10 distro so
I think this is just a tracking defect for YP.

I'll work with the strace developers to fix the bug or at least report the issue.
Comment 1 Randy MacLeod 2020-02-06 23:41:48 UTC 
Here's the local.conf used:

$ grep -v "^#" conf/local.conf | grep -v "^$"
MACHINE ??= "qemux86-64"
DISTRO_FEATURES_append = " ptest"
IMAGE_ROOTFS_EXTRA_SPACE  = "100000000"
PACKAGE_CLASSES ?= "package_ipk"
EXTRA_IMAGE_FEATURES ?= "debug-tweaks"
IMAGE_INSTALL_append = " strace-ptest"
USER_CLASSES ?= "buildstats image-mklibs image-prelink"
PATCHRESOLVE = "noop"
BB_DISKMON_DIRS ??= "\
    STOPTASKS,${TMPDIR},1G,100K \
    STOPTASKS,${DL_DIR},1G,100K \
    STOPTASKS,${SSTATE_DIR},1G,100K \
    STOPTASKS,/tmp,100M,100K \
    ABORT,${TMPDIR},100M,1K \
    ABORT,${DL_DIR},100M,1K \
    ABORT,${SSTATE_DIR},100M,1K \
    ABORT,/tmp,10M,1K"
PACKAGECONFIG_append_pn-qemu-system-native = " sdl"
PACKAGECONFIG_append_pn-nativesdk-qemu = " sdl"
CONF_VERSION = "1"
Comment 2 Ross Burton 2022-01-28 18:04:14 UTC 
Randy: did you speak to upstream about this?
Comment 3 Randy MacLeod 2022-01-28 19:22:25 UTC 
Ross, No, sadly I haven't.
Comment 4 Pavel Zhukov 2022-02-10 19:56:21 UTC 
(In reply to comment #3)
> Ross, No, sadly I haven't.

I did. https://github.com/strace/strace/issues/142
Comment 5 Randy MacLeod 2022-10-13 16:17:09 UTC 
Commented on https://github.com/strace/strace/issues/142 to see if there's a middle ground.
Comment 6 Randy MacLeod 2023-05-08 14:39:46 UTC 
Neither the upstream kernel or strace devs seem to be interested in fixing this annoyance so I'm closing the defect.