Re: Several tst-robust* tests time out with recent Linux kernel

[Xi Ruoyao]

On Tue, 2023-11-14 at 02:33 +0800, Xi Ruoyao wrote:
> Hi,
> 
> With Linux 6.7.0-rc1, several tst-robust* tests time out on x86_64:
> 
> FAIL: nptl/tst-robust1
> FAIL: nptl/tst-robust3
> FAIL: nptl/tst-robust4
> FAIL: nptl/tst-robust6
> FAIL: nptl/tst-robust7
> FAIL: nptl/tst-robust9
> 
> This does not happen with Linux 6.6.0.  Do you have some clue about
> it?

Bisected to the kernel commit:

commit 5694289ce183bc3336407a78c8c722a0b9208f9b (HEAD)
Author: peterz@xxxxxxxxxxxxx <peterz@xxxxxxxxxxxxx>
Date:   Thu Sep 21 12:45:08 2023 +0200

    futex: Flag conversion
    
    Futex has 3 sets of flags:
    
     - legacy futex op bits
     - futex2 flags
     - internal flags
    
    Add a few helpers to convert from the API flags into the internal
    flags.
    
    Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
    Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
    Reviewed-by: Andr<C3><A9> Almeida <andrealmeid@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230921105247.722140574@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

-- 
Xi Ruoyao <xry111@xxxxxxxxxxx>
School of Aerospace Science and Technology, Xidian University