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seccomp: add futex_requeue syscall (kernel v6.7, libseccomp v2.5.5)

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Add this syscall to match the profile in containerd

containerd: a6e52c74fa
libseccomp: 53267af3fb
kernel: 0f4b5f9722

    futex: Add sys_futex_requeue()

    Finish off the 'simple' futex2 syscall group by adding
    sys_futex_requeue(). Unlike sys_futex_{wait,wake}() its arguments are
    too numerous to fit into a regular syscall. As such, use struct
    futex_waitv to pass the 'source' and 'destination' futexes to the
    syscall.

    This syscall implements what was previously known as FUTEX_CMP_REQUEUE
    and uses {val, uaddr, flags} for source and {uaddr, flags} for
    destination.

    This design explicitly allows requeueing between different types of
    futex by having a different flags word per uaddr.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit df57a080b6)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2024-02-06 14:12:31 +01:00
parent 26d766450c
commit 68e7b988b1
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2 changed files with 2 additions and 0 deletions
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1
profiles/seccomp/default.json
View file

@ -132,6 +132,7 @@
"ftruncate",
"ftruncate64",
"futex",
"futex_requeue",
"futex_time64",
"futex_waitv",
"futimesat",

1
profiles/seccomp/default_linux.go
View file

@ -124,6 +124,7 @@ func DefaultProfile() *Seccomp {
"ftruncate",
"ftruncate64",
"futex",
"futex_requeue", // kernel v6.7, libseccomp v2.5.5
"futex_time64",
"futex_waitv",
"futimesat",