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| author | Stefano Brivio <sbrivio@redhat.com> | 2024-12-27 11:40:19 +0100 |
|---|---|---|
| committer | Stefano Brivio <sbrivio@redhat.com> | 2025-01-05 23:49:11 +0100 |
| commit | 3876fc780d01870040343cdab7da3f14f53272d5 (patch) | |
| tree | 1ba435f18e7e1b4455e92a03ed714654f2087f3f /virtio.c | |
| parent | 898e853635a79e33917bb4646ff1fb5fc3a92997 (diff) | |
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seccomp: Unconditionally allow accept(2) even if accept4(2) is present
On Alpine Linux 3.21, passt aborts right away as soon as QEMU connects
to it.
Most likely, this has always been the case with musl, because since
musl commit dc01e2cbfb29 ("add fallback emulation for accept4 on old
kernels"), accept4() without flags is implemented using accept().
However, I guess that nobody realised earlier because it's typically
pasta(1) being used on musl-based distributions, and the only place
where we call accept4() without flags is tap_listen_handler().
Add accept() to the list of allowed system calls regardless of the
presence of accept4().
Reported-by: NN708 <nn708@outlook.com>
Link: https://bugs.passt.top/show_bug.cgi?id=106
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'virtio.c')
0 files changed, 0 insertions, 0 deletions