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This commit is contained in:
Ward from fusion-voyager-3 2024-12-05 21:17:31 +03:00
parent 7cdd68f52b
commit 2fc220c9cf
4 changed files with 2 additions and 103 deletions

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From b03fe816d7b2675afdb4c1d10fe7658a5f2b2f82 Mon Sep 17 00:00:00 2001
From: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Date: Tue, 12 Nov 2024 15:01:16 -0800
Subject: [PATCH 6/6] nvidia-drm: Set FOP_UNSIGNED_OFFSET for
nv_drm_fops.fop_flags if present
Linux kernel commit 641bb4394f40 ("fs: move FMODE_UNSIGNED_OFFSET to
fop_flags") introduced a new .fop_flags define, FOP_UNSIGNED_OFFSET, for
struct file_operations. A check in drm_open_helper was added to ensure DRM
device drivers mark that all file offsets passed for working with DRM fs
nodes are unsigned values. If a DRM device driver fails to set this static
member, opening DRM device nodes (/dev/dri/card*) will fail. This commit
will land in Linux kernel v6.12.
To ensure DRM clients will continue to function with kernel v6.12 and
above, set FOP_UNSIGNED_OFFSET for nv_drm_fops.fop_flags if
FOP_UNSIGNED_OFFSET is present in the linux kernel headers being built
against. Without doing so, userspace DRM clients will fail to function. An
example is being unable to launch Wayland compositors.
KWin logs without this change:
kwin_core: Failed to open /dev/dri/card1 device (Invalid argument)
kwin_wayland_drm: failed to open drm device at "/dev/dri/card1"
kwin_core: Failed to open /dev/dri/card0 device (Invalid argument)
kwin_wayland_drm: failed to open drm device at "/dev/dri/card0"
kwin_wayland_drm: No suitable DRM devices have been found
Linux kernel warning generated without this change:
[Oct 2 02:15] ------------[ cut here ]------------
[ +0.000009] WARNING: CPU: 2 PID: 464 at drivers/gpu/drm/drm_file.c:312 drm_open_helper+0x134/0x150
<snip>
[ +0.000108] Unloaded tainted modules: nvidia(OE):1 nvidia_modeset(OE):1 nvidia_drm(OE):1 [last unloaded: ttm]
[ +0.000024] CPU: 2 UID: 0 PID: 464 Comm: systemd-logind Tainted: G OE 6.12.0-rc1-next-20241001-sound+ #10 c8090f98b0209abebde89ba1e4c08c75331eef4d
[ +0.000016] Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
[ +0.000004] Hardware name: System manufacturer PRIME Z390-A/PRIME Z390-A, BIOS 0224 08/14/2018
[ +0.000005] RIP: 0010:drm_open_helper+0x134/0x150
<snip>
[ +0.000005] Call Trace:
[ +0.000006] <TASK>
[ +0.000004] ? drm_open_helper+0x134/0x150
[ +0.000008] ? __warn.cold+0x93/0xf6
[ +0.000011] ? drm_open_helper+0x134/0x150
[ +0.000009] ? report_bug+0xff/0x140
[ +0.000009] ? handle_bug+0x58/0x90
[ +0.000010] ? exc_invalid_op+0x17/0x70
[ +0.000010] ? asm_exc_invalid_op+0x1a/0x20
[ +0.000018] ? drm_open_helper+0x134/0x150
[ +0.000008] drm_open+0x73/0x110
[ +0.000007] drm_stub_open+0x9b/0xd0
[ +0.000009] chrdev_open+0xb0/0x230
[ +0.000014] ? __pfx_chrdev_open+0x10/0x10
[ +0.000011] do_dentry_open+0x14c/0x4a0
[ +0.000013] vfs_open+0x2e/0xe0
[ +0.000009] path_openat+0x82f/0x13f0
[ +0.000016] do_filp_open+0xc4/0x170
[ +0.000020] do_sys_openat2+0xae/0xe0
[ +0.000010] __x64_sys_openat+0x55/0xa0
[ +0.000009] do_syscall_64+0x82/0x190
[ +0.000008] ? do_readlinkat+0xc5/0x180
[ +0.000008] ? syscall_exit_to_user_mode+0x37/0x1c0
[ +0.000010] ? do_syscall_64+0x8e/0x190
[ +0.000007] ? do_sys_openat2+0x9c/0xe0
[ +0.000009] ? syscall_exit_to_user_mode+0x37/0x1c0
[ +0.000008] ? do_syscall_64+0x8e/0x190
[ +0.000007] ? syscall_exit_to_user_mode+0x37/0x1c0
[ +0.000007] ? do_syscall_64+0x8e/0x190
[ +0.000006] ? do_syscall_64+0x8e/0x190
[ +0.000007] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ +0.000012] RIP: 0033:0x7f90c1cec2e3
<snip>
[ +0.000004] ---[ end trace 0000000000000000 ]---
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
---
kernel-open/nvidia-drm/nvidia-drm-drv.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kernel-open/nvidia-drm/nvidia-drm-drv.c b/kernel-open/nvidia-drm/nvidia-drm-drv.c
index 8cb94219..16f0d13e 100644
--- a/kernel-open/nvidia-drm/nvidia-drm-drv.c
+++ b/kernel-open/nvidia-drm/nvidia-drm-drv.c
@@ -1711,6 +1711,10 @@ static const struct file_operations nv_drm_fops = {
.read = drm_read,
.llseek = noop_llseek,
+
+#if defined(FOP_UNSIGNED_OFFSET)
+ .fop_flags = FOP_UNSIGNED_OFFSET,
+#endif
};
static const struct drm_ioctl_desc nv_drm_ioctls[] = {
--
2.47.0

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@ -17,9 +17,6 @@ ifeq (amd64,$(DEB_HOST_ARCH))
rm -rf debian/tmp/32
# Extract all manpages
gunzip debian/tmp/*.1.gz -k
# Apply the patch from ./debian/patches/0001.patch
patch -Np2 -i $(CURDIR)/debian/patches/0001.patch -d $(CURDIR)/debian/tmp/kernel
patch -Np2 -i $(CURDIR)/debian/patches/0001.patch -d $(CURDIR)/debian/tmp/kernel-open
# NVENC/NvFBC
sed -i 's/\xe8\x35\x3e\xfe\xff\x85\xc0\x41\x89\xc4/\xe8\x35\x3e\xfe\xff\x29\xc0\x41\x89\xc4/g' "debian/tmp/libnvidia-encode.so.565.77"
sed -i 's/\x85\xc0\x0f\x84\x9b\x00\x00\x00\x48/\x85\xc0\x90\x90\x90\x90\x90\x90\x48/g' "debian/tmp/libnvidia-fbc.so.565.77"
@ -32,9 +29,6 @@ ifeq (i386,$(DEB_HOST_ARCH))
mkdir -p debian/tmp
# Copy installer contents into debian temp dir
cp -rf ./NVIDIA-Linux-*/* debian/tmp
# Apply the patch from debian/patches/0001.patch
patch -Np2 -i $(CURDIR)/debian/patches/0001.patch -d $(CURDIR)/debian/tmp/kernel
patch -Np2 -i $(CURDIR)/debian/patches/0001.patch -d $(CURDIR)/debian/tmp/kernel-open
# Replace libs with 32 bit
rm -rf debian/tmp/*.so*
cp -rf ./NVIDIA-Linux-*/32/* debian/tmp