[Qemu-devel] [Bug 1834496] [NEW] Regressions on arm target with some GCC tests

[Qemu-devel] [Bug 1834496] [NEW] Regressions on arm target with some GCC tests

[Christophe Lyon]

Public bug reported:

Hi,

After trying qemu master:
commit 474f3938d79ab36b9231c9ad3b5a9314c2aeacde
Merge: 68d7ff0 14f5d87
Author: Peter Maydell <peter.maydell@linaro.org>
Date:   Fri Jun 21 15:40:50 2019 +0100

I found several regressions compared to qemu-3.1 when running the GCC testsuite.
I'm attaching a tarball containing several GCC tests (binaries), needed shared libs, and a short script to run all the tests.

All tests used to pass w/o error (one of them is verbose), but with a
recent qemu, all of them make qemu crash:

qemu: uncaught target signal 6 (Aborted) - core dumped

This was noticed with GCC master configured with
--target arm-none-linux-gnueabi
--with-mode arm
--with-cpu cortex-a9

and calling qemu with --cpu cortex-a9 (the script uses "any", this makes
no difference).

I have noticed other failures with arm-v8 code, but this is probably the
same root cause. Since it's a bit tedious to manually rebuild & extract
the testcases, I'd prefer to start with this subset, and I can extract
more if needed later.

Thanks

** Affects: qemu
     Importance: Undecided
         Status: New

** Attachment added: "qemu-errors.tar.xz"
   https://bugs.launchpad.net/bugs/1834496/+attachment/5273789/+files/qemu-errors.tar.xz

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Title:
  Regressions on arm target with some GCC tests

Status in QEMU:
  New

Bug description:
  Hi,

  After trying qemu master:
  commit 474f3938d79ab36b9231c9ad3b5a9314c2aeacde
  Merge: 68d7ff0 14f5d87
  Author: Peter Maydell <peter.maydell@linaro.org>
  Date:   Fri Jun 21 15:40:50 2019 +0100

  I found several regressions compared to qemu-3.1 when running the GCC testsuite.
  I'm attaching a tarball containing several GCC tests (binaries), needed shared libs, and a short script to run all the tests.

  All tests used to pass w/o error (one of them is verbose), but with a
  recent qemu, all of them make qemu crash:

  qemu: uncaught target signal 6 (Aborted) - core dumped

  This was noticed with GCC master configured with
  --target arm-none-linux-gnueabi
  --with-mode arm
  --with-cpu cortex-a9

  and calling qemu with --cpu cortex-a9 (the script uses "any", this
  makes no difference).

  I have noticed other failures with arm-v8 code, but this is probably
  the same root cause. Since it's a bit tedious to manually rebuild &
  extract the testcases, I'd prefer to start with this subset, and I can
  extract more if needed later.

  Thanks

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[Qemu-devel] [Bug 1834496] Re: Regressions on arm target with some GCC tests

[Alex Bennée]

** Tags added: arm testcases

** Tags removed: testcases
** Tags added: testcase

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Title:
  Regressions on arm target with some GCC tests

Status in QEMU:
  New

Bug description:
  Hi,

  After trying qemu master:
  commit 474f3938d79ab36b9231c9ad3b5a9314c2aeacde
  Merge: 68d7ff0 14f5d87
  Author: Peter Maydell <peter.maydell@linaro.org>
  Date:   Fri Jun 21 15:40:50 2019 +0100

  I found several regressions compared to qemu-3.1 when running the GCC testsuite.
  I'm attaching a tarball containing several GCC tests (binaries), needed shared libs, and a short script to run all the tests.

  All tests used to pass w/o error (one of them is verbose), but with a
  recent qemu, all of them make qemu crash:

  qemu: uncaught target signal 6 (Aborted) - core dumped

  This was noticed with GCC master configured with
  --target arm-none-linux-gnueabi
  --with-mode arm
  --with-cpu cortex-a9

  and calling qemu with --cpu cortex-a9 (the script uses "any", this
  makes no difference).

  I have noticed other failures with arm-v8 code, but this is probably
  the same root cause. Since it's a bit tedious to manually rebuild &
  extract the testcases, I'd prefer to start with this subset, and I can
  extract more if needed later.

  Thanks

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[Qemu-devel] [Bug 1834496] Re: Regressions on arm target with some GCC tests

[Richard Henderson]

** Changed in: qemu
     Assignee: (unassigned) => Richard Henderson (rth)

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Title:
  Regressions on arm target with some GCC tests

Status in QEMU:
  New

Bug description:
  Hi,

  After trying qemu master:
  commit 474f3938d79ab36b9231c9ad3b5a9314c2aeacde
  Merge: 68d7ff0 14f5d87
  Author: Peter Maydell <peter.maydell@linaro.org>
  Date:   Fri Jun 21 15:40:50 2019 +0100

  I found several regressions compared to qemu-3.1 when running the GCC testsuite.
  I'm attaching a tarball containing several GCC tests (binaries), needed shared libs, and a short script to run all the tests.

  All tests used to pass w/o error (one of them is verbose), but with a
  recent qemu, all of them make qemu crash:

  qemu: uncaught target signal 6 (Aborted) - core dumped

  This was noticed with GCC master configured with
  --target arm-none-linux-gnueabi
  --with-mode arm
  --with-cpu cortex-a9

  and calling qemu with --cpu cortex-a9 (the script uses "any", this
  makes no difference).

  I have noticed other failures with arm-v8 code, but this is probably
  the same root cause. Since it's a bit tedious to manually rebuild &
  extract the testcases, I'd prefer to start with this subset, and I can
  extract more if needed later.

  Thanks

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1834496/+subscriptions

[Qemu-devel] [Bug 1834496] Re: Regressions on arm target with some GCC tests

[Alex Bennée]

I bisected a chunk of the errors to:

  commit c6fb8c0cf704c4a1a48c3e99e995ad4c58150dab (refs/bisect/bad)
  Author: Richard Henderson <richard.henderson@linaro.org>
  Date:   Mon Feb 25 11:42:35 2019 -0800

      tcg/i386: Support INDEX_op_extract2_{i32,i64}

      Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Specifically I think when tcg_gen_deposit_i32 handles the if (ofs + len
== 32) case.

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Title:
  Regressions on arm target with some GCC tests

Status in QEMU:
  New

Bug description:
  Hi,

  After trying qemu master:
  commit 474f3938d79ab36b9231c9ad3b5a9314c2aeacde
  Merge: 68d7ff0 14f5d87
  Author: Peter Maydell <peter.maydell@linaro.org>
  Date:   Fri Jun 21 15:40:50 2019 +0100

  I found several regressions compared to qemu-3.1 when running the GCC testsuite.
  I'm attaching a tarball containing several GCC tests (binaries), needed shared libs, and a short script to run all the tests.

  All tests used to pass w/o error (one of them is verbose), but with a
  recent qemu, all of them make qemu crash:

  qemu: uncaught target signal 6 (Aborted) - core dumped

  This was noticed with GCC master configured with
  --target arm-none-linux-gnueabi
  --with-mode arm
  --with-cpu cortex-a9

  and calling qemu with --cpu cortex-a9 (the script uses "any", this
  makes no difference).

  I have noticed other failures with arm-v8 code, but this is probably
  the same root cause. Since it's a bit tedious to manually rebuild &
  extract the testcases, I'd prefer to start with this subset, and I can
  extract more if needed later.

  Thanks

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1834496/+subscriptions

[Qemu-devel] [Bug 1834496] Re: Regressions on arm target with some GCC tests

[Alex Bennée]

Fixed by:

Subject: [PATCH for-4.1] tcg: Fix constant folding of INDEX_op_extract2_i32
Date: Tue,  9 Jul 2019 14:19:00 +0200
Message-Id: <20190709121900.25644-1-richard.henderson@linaro.org>


** Changed in: qemu
       Status: New => In Progress

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Title:
  Regressions on arm target with some GCC tests

Status in QEMU:
  In Progress

Bug description:
  Hi,

  After trying qemu master:
  commit 474f3938d79ab36b9231c9ad3b5a9314c2aeacde
  Merge: 68d7ff0 14f5d87
  Author: Peter Maydell <peter.maydell@linaro.org>
  Date:   Fri Jun 21 15:40:50 2019 +0100

  I found several regressions compared to qemu-3.1 when running the GCC testsuite.
  I'm attaching a tarball containing several GCC tests (binaries), needed shared libs, and a short script to run all the tests.

  All tests used to pass w/o error (one of them is verbose), but with a
  recent qemu, all of them make qemu crash:

  qemu: uncaught target signal 6 (Aborted) - core dumped

  This was noticed with GCC master configured with
  --target arm-none-linux-gnueabi
  --with-mode arm
  --with-cpu cortex-a9

  and calling qemu with --cpu cortex-a9 (the script uses "any", this
  makes no difference).

  I have noticed other failures with arm-v8 code, but this is probably
  the same root cause. Since it's a bit tedious to manually rebuild &
  extract the testcases, I'd prefer to start with this subset, and I can
  extract more if needed later.

  Thanks

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1834496/+subscriptions

[Qemu-devel] [Bug 1834496] Re: Regressions on arm target with some GCC tests

[Christophe Lyon]

I confirm this patch fixes the problem I reported. Thanks!

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Title:
  Regressions on arm target with some GCC tests

Status in QEMU:
  In Progress

Bug description:
  Hi,

  After trying qemu master:
  commit 474f3938d79ab36b9231c9ad3b5a9314c2aeacde
  Merge: 68d7ff0 14f5d87
  Author: Peter Maydell <peter.maydell@linaro.org>
  Date:   Fri Jun 21 15:40:50 2019 +0100

  I found several regressions compared to qemu-3.1 when running the GCC testsuite.
  I'm attaching a tarball containing several GCC tests (binaries), needed shared libs, and a short script to run all the tests.

  All tests used to pass w/o error (one of them is verbose), but with a
  recent qemu, all of them make qemu crash:

  qemu: uncaught target signal 6 (Aborted) - core dumped

  This was noticed with GCC master configured with
  --target arm-none-linux-gnueabi
  --with-mode arm
  --with-cpu cortex-a9

  and calling qemu with --cpu cortex-a9 (the script uses "any", this
  makes no difference).

  I have noticed other failures with arm-v8 code, but this is probably
  the same root cause. Since it's a bit tedious to manually rebuild &
  extract the testcases, I'd prefer to start with this subset, and I can
  extract more if needed later.

  Thanks

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1834496/+subscriptions

[Qemu-devel] [Bug 1834496] Re: Regressions on arm target with some GCC tests

[Alex Bennée]

** Changed in: qemu
       Status: In Progress => Fix Committed

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Title:
  Regressions on arm target with some GCC tests

Status in QEMU:
  Fix Committed

Bug description:
  Hi,

  After trying qemu master:
  commit 474f3938d79ab36b9231c9ad3b5a9314c2aeacde
  Merge: 68d7ff0 14f5d87
  Author: Peter Maydell <peter.maydell@linaro.org>
  Date:   Fri Jun 21 15:40:50 2019 +0100

  I found several regressions compared to qemu-3.1 when running the GCC testsuite.
  I'm attaching a tarball containing several GCC tests (binaries), needed shared libs, and a short script to run all the tests.

  All tests used to pass w/o error (one of them is verbose), but with a
  recent qemu, all of them make qemu crash:

  qemu: uncaught target signal 6 (Aborted) - core dumped

  This was noticed with GCC master configured with
  --target arm-none-linux-gnueabi
  --with-mode arm
  --with-cpu cortex-a9

  and calling qemu with --cpu cortex-a9 (the script uses "any", this
  makes no difference).

  I have noticed other failures with arm-v8 code, but this is probably
  the same root cause. Since it's a bit tedious to manually rebuild &
  extract the testcases, I'd prefer to start with this subset, and I can
  extract more if needed later.

  Thanks

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1834496/+subscriptions

[Qemu-devel] [Bug 1834496] Re: Regressions on arm target with some GCC tests

[Thomas Huth]

** Changed in: qemu
       Status: Fix Committed => Fix Released

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Title:
  Regressions on arm target with some GCC tests

Status in QEMU:
  Fix Released

Bug description:
  Hi,

  After trying qemu master:
  commit 474f3938d79ab36b9231c9ad3b5a9314c2aeacde
  Merge: 68d7ff0 14f5d87
  Author: Peter Maydell <peter.maydell@linaro.org>
  Date:   Fri Jun 21 15:40:50 2019 +0100

  I found several regressions compared to qemu-3.1 when running the GCC testsuite.
  I'm attaching a tarball containing several GCC tests (binaries), needed shared libs, and a short script to run all the tests.

  All tests used to pass w/o error (one of them is verbose), but with a
  recent qemu, all of them make qemu crash:

  qemu: uncaught target signal 6 (Aborted) - core dumped

  This was noticed with GCC master configured with
  --target arm-none-linux-gnueabi
  --with-mode arm
  --with-cpu cortex-a9

  and calling qemu with --cpu cortex-a9 (the script uses "any", this
  makes no difference).

  I have noticed other failures with arm-v8 code, but this is probably
  the same root cause. Since it's a bit tedious to manually rebuild &
  extract the testcases, I'd prefer to start with this subset, and I can
  extract more if needed later.

  Thanks

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1834496/+subscriptions