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daedalus-v4l2{,-dkms}: f04d700 -> f55b2cd (UAF lifetime fix)

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Bumps all 4 daedalus packages (arch + debian × userspace + dkms)
to pick up daedalus-v4l2 f55b2cd: "kernel: media_request_get/put
around inf->req (UAF safety)".

Closes the SHIP-WITH-EYES-OPEN concern Sonnet flagged in the
pre-deployment review — without explicit media_request_get on
capture + media_request_put on completion, a concurrent
MEDIA_IOC_REQUEST_REINIT or process-kill triggering
buf_request_complete from the cancel path could drop vb2's
reference before our completion handler ran, leaving inf->req
dangling through v4l2_ctrl_request_complete + buf_done.

Matches the cedrus / rkvdec refcount pattern.  No protocol
change, no API change, no consumer-side adjustment required.
Same byte-exact output verified on hertz post-fix (libva path:
match; standalone test_m2m_stream: 30/30 frames).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Markus Fritsche
2026-05-18 18:39:40 +00:00
parent 4776dc01d2
commit 1bd11eaf27
6 changed files with 14 additions and 14 deletions
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debian/daedalus-v4l2-dkms/build-deb.sh
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@@ -14,8 +14,8 @@
# Sibling userspace package: ../daedalus-v4l2/build-deb.sh
set -euo pipefail
UPSTREAM_COMMIT=f04d7000f858fe51d867aba14a529d3aef4fbd54
PKGVER=0.1.0+r15+gf04d700
UPSTREAM_COMMIT=f55b2cdab8a8c0bc04e8c1bb1d0b6ca85e7d96d2
PKGVER=0.1.0+r16+gf55b2cd
PKGREL=1
MODULE_NAME=daedalus_v4l2
debian/daedalus-v4l2-dkms/debian/changelog
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@@ -1,7 +1,7 @@
daedalus-v4l2-dkms (0.1.0+r15+gf04d700-1) bookworm trixie; urgency=medium
daedalus-v4l2-dkms (0.1.0+r16+gf55b2cd-1) bookworm trixie; urgency=medium
* Initial Debian DKMS packaging for the daedalus_v4l2 kernel module.
* Pinned to f04d700 (Phase 8.13 close): kernel-side framework
* Pinned to f55b2cd (Phase 8.13 close): kernel-side framework
integration (V4L2 m2m, dmabuf-export, media controller, request
API, NV12 single-plane + NV12M + P010 CAPTURE) that closes the
libva→/dev/video0→daemon round-trip with byte-exact pixels.
debian/daedalus-v4l2/build-deb.sh
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+3 -3
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@@ -11,12 +11,12 @@
# Upstream repo: https://git.reauktion.de/reauktion/daedalus-v4l2
set -euo pipefail
# Same pin as the Arch PKGBUILD. f04d700 = "Phase 8.13: byte-exact
# Same pin as the Arch PKGBUILD. f55b2cd = "Phase 8.13: byte-exact
# end-to-end via libva (consumer target hit)" — first commit where the
# full ffmpeg -hwaccel vaapi → libva → /dev/video0 → daemon path lands
# a pixel-correct decoded frame back in ffmpeg.
UPSTREAM_COMMIT=f04d7000f858fe51d867aba14a529d3aef4fbd54
PKGVER=0.1.0+r15+gf04d700
UPSTREAM_COMMIT=f55b2cdab8a8c0bc04e8c1bb1d0b6ca85e7d96d2
PKGVER=0.1.0+r16+gf55b2cd
PKGREL=1
HERE=$(dirname "$(readlink -f "$0")")
debian/daedalus-v4l2/debian/changelog
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@@ -1,7 +1,7 @@
daedalus-v4l2 (0.1.0+r15+gf04d700-1) bookworm trixie; urgency=medium
daedalus-v4l2 (0.1.0+r16+gf55b2cd-1) bookworm trixie; urgency=medium
* Initial Debian packaging for the daedalus-v4l2 userspace daemon.
* Pinned to f04d700 (Phase 8.13 close): first commit where the full
* Pinned to f55b2cd (Phase 8.13 close): first commit where the full
ffmpeg -hwaccel vaapi → libva-v4l2-request-fourier → /dev/video0
→ daemon path lands a pixel-correct decoded NV12 frame back in
ffmpeg.