crosvm/seccomp/x86_64/video_device.policy
Jordan R Abrahams ff7f1ae9fe seccomp: Add statx to video_device.policy for glibc
With the new glibc 2.33 roll, we're seeing crashes live relating to
statx (syscall 397). The process that's crashing is pcivirtio-video,
so we suspect video_device.policy is the breaking policy.

Crash report: http://shortn/_4EWpF4q77O

This was very recently fixed in arm (where the original crash occured),
however, it's still missing in the amd64/x86_64 policy file. It's
very feasible we'll see a similar case in the future with this arch.

BUG=b:187795909
TEST=CQ

Change-Id: I7b02ccf02d214590aadc37dc53e00ad34e178a4a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3291890
Auto-Submit: Jordan R Abrahams <ajordanr@google.com>
Commit-Queue: Manoj Gupta <manojgupta@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
2021-11-19 04:18:27 +00:00

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# Copyright 2020 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
@include /usr/share/policy/crosvm/common_device.policy
# Syscalls specific to video devices.
clock_getres: 1
connect: 1
getdents: 1
getdents64: 1
getegid: 1
geteuid: 1
getgid: 1
getresgid: 1
getresuid: 1
getsockname: 1
getuid: 1
# ioctl: arg1 == DRM_IOCTL_*
ioctl: arg1 & 0x6400
memfd_create: 1
newfstatat: 1
openat: 1
setpriority: 1
socket: arg0 == AF_UNIX
stat: 1
fstat: 1
fstatfs: 1
statx: 1
# Rules needed for minigbm on AMD devices.
getrandom: 1
lstat: 1
# mmap/mprotect differ from the common_device.policy
mmap: arg2 == PROT_READ|PROT_WRITE || arg2 == PROT_NONE || arg2 == PROT_READ|PROT_EXEC || arg2 == PROT_WRITE || arg2 == PROT_READ
mprotect: arg2 == PROT_READ|PROT_WRITE || arg2 == PROT_NONE || arg2 == PROT_READ
readlink: 1
sched_setaffinity: 1
sched_setscheduler: arg1 == SCHED_IDLE || arg1 == SCHED_BATCH
# Required by mesa on AMD GPU
sysinfo: 1
prctl: arg0 == PR_SET_NAME