[Bug 80560] 62102f505cd13840e4 causes icon corruption in thunar

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80560

--- Comment #12 from Harald Judt <h.judt at gmx.at> ---
I've tried a new kernel (3.15.2), same problem. It is not reproducible on the
other machine with a different driver. However, I did a new bisect and got this
result:

git bisect start
# bad: [b6eca567c08fa1e14b06d751a13b714119a480a6] Revert "sna: Promote better
active buffer reuse"
git bisect bad b6eca567c08fa1e14b06d751a13b714119a480a6
# good: [7468a6b740af14d95e8f9bacd2e352ec98a9acf2] 2.99.906 snapshot
git bisect good 7468a6b740af14d95e8f9bacd2e352ec98a9acf2
# good: [2fb2cd092dadba40b5ad2da57943c660a0c9bc14] 2.99.910 snapshot
git bisect good 2fb2cd092dadba40b5ad2da57943c660a0c9bc14
# good: [df297e9fafe1a7de1036f3151f93de67661c2a4e] sna: Userptr lands upstream,
enable.
git bisect good df297e9fafe1a7de1036f3151f93de67661c2a4e
# bad: [b41a51e0f54c983ef72bc31125419382d666d48c] sna: Tweak self-copy boxes to
hit the GPU more often
git bisect bad b41a51e0f54c983ef72bc31125419382d666d48c
# bad: [7f28b1cfa20eb4fc11c1a9c1e0c0fac7847be72e] uxa: Support 64-bit MSC
values. Handle kernel vageries about MSC reporting
git bisect bad 7f28b1cfa20eb4fc11c1a9c1e0c0fac7847be72e
# good: [e8d8f754ebf77f17a4666c8f649907bee50313bd] sna/dri2: Make the
swap-limit transitions more obvious
git bisect good e8d8f754ebf77f17a4666c8f649907bee50313bd
# bad: [bb49222a514b1d6041f3d9530a22f5701377118b] sna: Add DBG hints for using
inplace CPU mmappings
git bisect bad bb49222a514b1d6041f3d9530a22f5701377118b
# bad: [562c47fc21b9029ebff29b53d2be590df4329264] Silence CLang (almost)
git bisect bad 562c47fc21b9029ebff29b53d2be590df4329264
# bad: [e6ee0679374f8fc80cb34693f80affe6ea676ddb] uxa: Silence compiler for
warnings in Cursor API changes
git bisect bad e6ee0679374f8fc80cb34693f80affe6ea676ddb
# good: [2a0dc7ed4961d5bda08bb583a7a6a2cc633b27e4] sna/dri2: Move scanout
processing from frame event to global
git bisect good 2a0dc7ed4961d5bda08bb583a7a6a2cc633b27e4
# good: [4321e8decd7be9daaa49c6ab4e8bb9bd66faae31] sna: Silence compiler for
warnings in Cursor API changes
git bisect good 4321e8decd7be9daaa49c6ab4e8bb9bd66faae31
# first bad commit: [e6ee0679374f8fc80cb34693f80affe6ea676ddb] uxa: Silence
compiler for warnings in Cursor API changes

Reproducability varies between bisect steps, but in general it's not hard to
notice the issue. I'm using gcc-4.8.3. If it's a compiler problem, it might
explain why it's not reproducible everywhere. However, the other machine uses
gcc-4.8.3 too but has a sandy bridge processor.

CFLAGS="-O2 -march=native -pipe -fno-ident -ggdb"
LDFLAGS="-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -Wl,--sort-common
-Wl,-z,now"

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