Comment # 3 on bug 1184543 from Daike Yu

> Apr 08 21:04:44 linux.fritz.box gnome-shell[2646]: (EE) 3: /usr/bin/Xwayland (0x55f1d2361000+0x4faec) [0x55f1d23b0aec]

This is line 274 of xwl_glamor_gbm_get_wl_buffer_for_pixmap():

> (gdb) info line *0x4faec
> Line 274 of "xwayland-glamor-gbm.c"
>    starts at address 0x4faec <xwl_glamor_gbm_get_wl_buffer_for_pixmap+204>
>    and ends at 0x4faef <xwl_glamor_gbm_get_wl_buffer_for_pixmap+207>.
> (gdb) l xwl_glamor_gbm_get_wl_buffer_for_pixmap
> 256	}
> 257	
> 258	static struct wl_buffer *
> 259	xwl_glamor_gbm_get_wl_buffer_for_pixmap(PixmapPtr pixmap,
> 260	                                        Bool *created)
> 261	{
> 262	    struct xwl_screen *xwl_screen = xwl_screen_get(pixmap->drawable.pScreen);
> 263	    struct xwl_pixmap *xwl_pixmap = xwl_pixmap_get(pixmap);
> 264	    struct xwl_gbm_private *xwl_gbm = xwl_gbm_get(xwl_screen);
> 265	    unsigned short width = pixmap->drawable.width;
> (gdb) 
> 266	    unsigned short height = pixmap->drawable.height;
> 267	    int prime_fd;
> 268	    int num_planes;
> 269	    uint32_t strides[4];
> 270	    uint32_t offsets[4];
> 271	    uint64_t modifier;
> 272	    int i;
> 273	
> 274	    if (xwl_pixmap->buffer) {
> 275	        /* Buffer already exists. Return it and inform caller if interested. */
> (gdb) p &(((struct xwl_pixmap*)0)->buffer)
> $2 = (struct wl_buffer **) 0x0
> (gdb) 

which looks like
https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/47/diffs?commit_id=036794bebce72a3fa2f95996d2e537ff568e0ff1
too, as in boo#118072. Would you please also check if
https://build.opensuse.org/package/show/home:yudaike:branches:SUSE:SLE-15-SP2:Update/xorg-x11-server
makes any difference for you?

Thanks.