Description of problem: Again, Tiger VNC server Version-Release number of selected component: xorg-x11-server-Xorg-21.1.18-1.fc42 Additional info: reporter: libreport-2.17.15 dso_list: /usr/libexec/Xorg xorg-x11-server-Xorg-21.1.18-1.fc42.x86_64 (Fedora Project) 1751398857 crash_function: vncHooksMoveCursor cgroup: 0::/system.slice/lightdm.service backtrace_rating: 4 comment: Again, Tiger VNC server package: xorg-x11-server-Xorg-21.1.18-1.fc42 runlevel: N 5 journald_cursor: s=a78c664d9fe34b2da2768ad43d83700c;i=23fdaad;b=5c19b8be59eb4e889ef1faa9f702403a;m=3e41279810;t=63f7dc6234c67;x=16ca794716475674 reason: Xorg killed by SIGSEGV executable: /usr/libexec/Xorg rootdir: / kernel: 6.16.7-200.fc42.x86_64 cmdline: /usr/libexec/Xorg -core -noreset :0 -seat seat0 -auth /run/lightdm/root/:0 -listen tcp vt1 -novtswitch uid: 0 type: CCpp Truncated backtrace: Thread no. 1 (1 frames) #0 vncHooksMoveCursor at ../../include/privates.h:164 Potential duplicate: bug 2356978
Created attachment 2107369 [details] File: open_fds
Created attachment 2107370 [details] File: os_info
Created attachment 2107371 [details] File: mountinfo
Created attachment 2107372 [details] File: environ
Created attachment 2107373 [details] File: backtrace
Created attachment 2107374 [details] File: limits
Created attachment 2107375 [details] File: cpuinfo
Created attachment 2107376 [details] File: exploitable
Created attachment 2107377 [details] File: maps
Created attachment 2107378 [details] File: core_backtrace
Created attachment 2107379 [details] File: proc_pid_status
I installed some debuginfo RPMs and did a GDB backtrace. The error happens in an infinite loop of #10 0x00007fe4c9f063d9 in vncHooksMoveCursor (dev=<optimized out>, screen=<optimized out>, x=<optimized out>, y=<optimized out>) at /usr/src/debug/tigervnc-1.15.0-6.fc42.x86_64/unix/xserver/hw/vnc/vncHooks.c:1265 And finishes with #261893 0x00007fe4c9f063d9 in vncHooksMoveCursor (dev=<optimized out>, screen=<optimized out>, x=<optimized out>, y=<optimized out>) at /usr/src/debug/tigervnc-1.15.0-6.fc42.x86_64/unix/xserver/hw/vnc/vncHooks.c:1265 #261894 0x00000000004238c9 in miPointerUpdateSprite (pDev=0x39bd0060) at ../mi/mipointer.c:440 #261895 mieqProcessInputEvents () at ../mi/mieq.c:571 #261896 0x0000000000551901 in ProcessInputEvents () at ../hw/xfree86/common/xf86Events.c:143 #261897 0x0000000000412c28 in Dispatch () at ../dix/dispatch.c:508 #261898 dix_main (argc=12, argv=0x7ffc29224f18, envp=<optimized out>) at ../dix/main.c:274 #261899 main (argc=12, argv=0x7ffc29224f18, envp=<optimized out>) at ../dix/stubmain.c:34 My card is a 10:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raphael (rev c4) embedded in the CPU vendor_id : AuthenticAMD cpu family : 25 model : 97 model name : AMD Ryzen 9 7900 12-Core Processor stepping : 2 microcode : 0xa60120a Main board: Base Board Information Manufacturer: ASUSTeK COMPUTER INC. Product Name: PRIME X670-P Version: Rev 1.xx My Xorg session is run by xfce4-session-4.20.2-1.fc42.x86_64 and lightdm-1.32.0-13.fc42.x86_64 Just in case: I don't remember having these problems in the previous board, another CPU and nVidia card. Please tell me if I can help more. I can even run a specially crafted libvnc.so if this helps. Just note that the bug is VERY random. It could happen many times a day or keep weeks without showing. Could not find any correlation. Every time I remember I was locally, not in a remote VNC session.
*** This bug has been marked as a duplicate of bug 2416635 ***