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Universal Blue•2mo ago
Wolfmane

Repeated split lock detection/ bus_lock traps on journal from CHTTPClientThre on kernel 6.16.4

I’m consistently seeing kernel “split lock detection bus_lock trap” spam in the kernel journal. The system remains functional but the log floods with traps several times per second. Here is a sample of the logs: 
* Kernel buffer tail (journalctl --no-hostname -k --lines 50):
     Oct 18 13:37:11 kernel: x86/split lock detection: #DB: CHTTPClientThre/3341 took a bus_lock trap at address: 0xf39c2c84
     Oct 18 13:37:13 kernel: x86/split lock detection: #DB: CHTTPClientThre/3341 took a bus_lock trap at address: 0xf39c2c84
     Oct 18 13:37:13 kernel: x86/split lock detection: #DB: CHTTPClientThre/3341 took a bus_lock trap at address: 0xf39c2c84
* Kernel buffer tail (journalctl --no-hostname -k --lines 50):
     Oct 18 13:37:11 kernel: x86/split lock detection: #DB: CHTTPClientThre/3341 took a bus_lock trap at address: 0xf39c2c84
     Oct 18 13:37:13 kernel: x86/split lock detection: #DB: CHTTPClientThre/3341 took a bus_lock trap at address: 0xf39c2c84
     Oct 18 13:37:13 kernel: x86/split lock detection: #DB: CHTTPClientThre/3341 took a bus_lock trap at address: 0xf39c2c84
As far as I can tell, Steam seems to be the culprit: 
$ sudo ps -eL -o pid,ppid,tid,comm,args | grep -F 'CHTTPClientThre'
   3261  3119  3341 CHTTPClientThre /var/home/Admin/.local/share/Steam/ubuntu12_32/steam -srt-logger-opened -silent (x5, redundant processes removed)
 
$ sudo ps -eL -o pid,ppid,tid,comm,args | grep -F 'CHTTPClientThre'
   3261  3119  3341 CHTTPClientThre /var/home/Admin/.local/share/Steam/ubuntu12_32/steam -srt-logger-opened -silent (x5, redundant processes removed)
System info: 
* CPU Model  AMD Ryzen 7 9800X3D 8-Core Processor
     
* Kernel:  6.16.4-115.bazzite.fc42.x86_64

* PCI Video Card: VGA compatible controller [0300]: NVIDIA Corporation GB203 [GeForce RTX 5070 Ti]
        Kernel driver in use: nvidia
        Kernel modules: nouveau, nvidia_drm, nvidia
* CPU Model  AMD Ryzen 7 9800X3D 8-Core Processor
     
* Kernel:  6.16.4-115.bazzite.fc42.x86_64

* PCI Video Card: VGA compatible controller [0300]: NVIDIA Corporation GB203 [GeForce RTX 5070 Ti]
        Kernel driver in use: nvidia
        Kernel modules: nouveau, nvidia_drm, nvidia
Any ideas of what could potentially be going on?
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