I've upgraded ubuntu 23.04 to 23.10 and I've got the bug that you said that should have been fixed.

On my Ubuntu 23.10 I'm using kernel 6.5.0-10-generic and I've installed the nvidia driver version 535.129.03. (my nvidia gpu is the RTX 2080 ti ; my cpu is the intel I9)

Not exactly the same bug because the error in the Ubuntu bug report is for a different kernel module. But the underlying cause is probably the same. 

Ubuntu is probably at fault here. Possibly the code for the nvidia-uvm module is designed for kernel versions < 6.5, so when Ubuntu upgraded to Linux kernel 6.5, it broke some modules because of changes to UBSAN in Linux 6.5 which causes modules such as nvidia-uvm to need patches to be compatible with Linux 6.5, but either nvidia has not yet provided a version of nvidia-uvm that is compatible with Linux 6.5 or Ubuntu neglected to apply an updated version from nvidia that is compatible with Linux 6.5.

Whois the guilty ? the nvidia or the ubuntu developers ? I didn't see this error on ubuntu 23.04,maybe because it does not use the kernel 6.5 by default,but 23.10 does it. 

I see a lot of those errors when I issue the command "dmesg" and any audio-video streamings don't flow.   

Log :


[   15.029102] UBSAN: array-index-out-of-bounds in /var/lib/dkms/nvidia/535.129.03/build/nvidia-uvm/uvm_pmm_gpu.c:829:45

[   15.031655] index 0 is out of range for type 'uvm_gpu_chunk_t *[*]'
[   15.034248] CPU: 9 PID: 2571 Comm: ffdetect Tainted: P           OE      6.5.0-10-generic #10-Ubuntu
[   15.034249] Hardware name: Gigabyte Technology Co., Ltd. Z390 AORUS PRO/Z390 AORUS PRO-CF, BIOS F12g GA9 06/08/2020
[   15.034250] Call Trace:
[   15.034251]  <TASK>
[   15.034251]  dump_stack_lvl+0x48/0x70
[   15.034255]  dump_stack+0x10/0x20
[   15.034257]  __ubsan_handle_out_of_bounds+0xc6/0x110
[   15.034259]  merge_gpu_chunk+0x57/0x1d0 [nvidia_uvm]
[   15.034293]  free_chunk_with_merges+0x13d/0x180 [nvidia_uvm]
[   15.034325]  free_chunk+0xa4/0xd0 [nvidia_uvm]
[   15.034355]  uvm_pmm_gpu_free+0xbf/0xf0 [nvidia_uvm]
[   15.034386]  phys_mem_deallocate+0x33/0xd0 [nvidia_uvm]
[   15.034422]  uvm_page_tree_put_ptes_async+0x4d5/0x580 [nvidia_uvm]
[   15.034459]  uvm_page_table_range_vec_deinit+0x3e/0xd0 [nvidia_uvm]
[   15.034494]  uvm_va_range_destroy+0x14d/0x590 [nvidia_uvm]
[   15.034527]  ? os_release_spinlock+0x1a/0x30 [nvidia]
[   15.034792]  ? uvm_kvfree+0x30/0x70 [nvidia_uvm]
[   15.034826]  destroy_va_ranges.part.0+0x61/0x90 [nvidia_uvm]
[   15.034857]  uvm_user_channel_detach+0x9e/0xe0 [nvidia_uvm]
[   15.034886]  uvm_api_unregister_channel+0xee/0x1a0 [nvidia_uvm]
[   15.034915]  uvm_ioctl+0x1a04/0x1cd0 [nvidia_uvm]
[   15.034939]  ? uvm_api_unregister_channel+0x134/0x1a0 [nvidia_uvm]
[   15.034968]  ? _copy_to_user+0x25/0x70
[   15.034970]  ? uvm_ioctl+0x5cc/0x1cd0 [nvidia_uvm]
[   15.034994]  ? _raw_spin_lock_irqsave+0xe/0x20
[   15.034996]  ? thread_context_non_interrupt_add+0x13a/0x2c0 [nvidia_uvm]
[   15.035031]  uvm_unlocked_ioctl_entry.part.0+0x7b/0xf0 [nvidia_uvm]
[   15.035055]  ? uvm_thread_context_remove+0x39/0x50 [nvidia_uvm]
[   15.035091]  uvm_unlocked_ioctl_entry+0x6b/0x90 [nvidia_uvm]
[   15.035115]  __x64_sys_ioctl+0xa0/0xf0
[   15.035116]  do_syscall_64+0x59/0x90
[   15.035118]  ? __rseq_handle_notify_resume+0x37/0x70
[   15.035119]  ? exit_to_user_mode_loop+0xe0/0x130
[   15.035122]  ? exit_to_user_mode_prepare+0x9b/0xb0
[   15.035123]  ? syscall_exit_to_user_mode+0x37/0x60
[   15.035125]  ? do_syscall_64+0x68/0x90
[   15.035126]  ? syscall_exit_to_user_mode+0x37/0x60
[   15.035128]  ? do_syscall_64+0x68/0x90
[   15.035129]  ? syscall_exit_to_user_mode+0x37/0x60
[   15.035130]  ? do_syscall_64+0x68/0x90
[   15.035131]  ? do_syscall_64+0x68/0x90
[   15.035133]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[   15.035134] RIP: 0033:0x7f9b9e7238ef
[   15.035144] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00
00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 18 48 8b 44 24 18 64 48 2b 04 25 28 00 00
[   15.035145] RSP: 002b:00007fff0ed9b9a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   15.035147] RAX: ffffffffffffffda RBX: 000000000239f8b8 RCX: 00007f9b9e7238ef
[   15.035147] RDX: 00007fff0ed9ba10 RSI: 000000000000001c RDI: 0000000000000004
[   15.035148] RBP: 00007fff0ed9ba50 R08: 000000000000242a R09: 0000000000000007
[   15.035149] R10: 000000000242a3c0 R11: 0000000000000246 R12: 00007fff0ed9ba10
[   15.035150] R13: 0000000000000004 R14: 0000000002506600 R15: 000000000237c138
[   15.035151]  </TASK>
[   15.035152] ================================================================================
[   15.037818] ================================================================================
[   15.040413] UBSAN: array-index-out-of-bounds in /var/lib/dkms/nvidia/535.129.03/build/nvidia-uvm/uvm_pmm_gpu.c:857:39

[   15.043033] index 0 is out of range for type 'uvm_gpu_chunk_t *[*]'
[   15.045636] CPU: 9 PID: 2571 Comm: ffdetect Tainted: P           OE      6.5.0-10-generic #10-Ubuntu
[   15.045639] Hardware name: Gigabyte Technology Co., Ltd. Z390 AORUS PRO/Z390 AORUS PRO-CF, BIOS F12g GA9 06/08/2020
[   15.045640] Call Trace:
[   15.045641]  <TASK>
[   15.045642]  dump_stack_lvl+0x48/0x70
[   15.045647]  dump_stack+0x10/0x20
[   15.045649]  __ubsan_handle_out_of_bounds+0xc6/0x110
[   15.045652]  merge_gpu_chunk+0xc6/0x1d0 [nvidia_uvm]
[   15.045702]  free_chunk_with_merges+0x13d/0x180 [nvidia_uvm]
[   15.045734]  free_chunk+0xa4/0xd0 [nvidia_uvm]
[   15.045765]  uvm_pmm_gpu_free+0xbf/0xf0 [nvidia_uvm]
[   15.045795]  phys_mem_deallocate+0x33/0xd0 [nvidia_uvm]
[   15.045831]  uvm_page_tree_put_ptes_async+0x4d5/0x580 [nvidia_uvm]
[   15.045868]  uvm_page_table_range_vec_deinit+0x3e/0xd0 [nvidia_uvm]
[   15.045904]  uvm_va_range_destroy+0x14d/0x590 [nvidia_uvm]
[   15.045936]  ? os_release_spinlock+0x1a/0x30 [nvidia]
[   15.046201]  ? uvm_kvfree+0x30/0x70 [nvidia_uvm]
[   15.046236]  destroy_va_ranges.part.0+0x61/0x90 [nvidia_uvm]
[   15.046277]  uvm_user_channel_detach+0x9e/0xe0 [nvidia_uvm]
[   15.046315]  uvm_api_unregister_channel+0xee/0x1a0 [nvidia_uvm]
[   15.046354]  uvm_ioctl+0x1a04/0x1cd0 [nvidia_uvm]
[   15.046388]  ? uvm_api_unregister_channel+0x134/0x1a0 [nvidia_uvm]
[   15.046427]  ? _copy_to_user+0x25/0x70
[   15.046429]  ? uvm_ioctl+0x5cc/0x1cd0 [nvidia_uvm]
[   15.046463]  ? _raw_spin_lock_irqsave+0xe/0x20
[   15.046466]  ? thread_context_non_interrupt_add+0x13a/0x2c0 [nvidia_uvm]
[   15.046511]  uvm_unlocked_ioctl_entry.part.0+0x7b/0xf0 [nvidia_uvm]
[   15.046544]  ? uvm_thread_context_remove+0x39/0x50 [nvidia_uvm]
[   15.046589]  uvm_unlocked_ioctl_entry+0x6b/0x90 [nvidia_uvm]
[   15.046622]  __x64_sys_ioctl+0xa0/0xf0
[   15.046625]  do_syscall_64+0x59/0x90
[   15.046627]  ? __rseq_handle_notify_resume+0x37/0x70
[   15.046629]  ? exit_to_user_mode_loop+0xe0/0x130
[   15.046632]  ? exit_to_user_mode_prepare+0x9b/0xb0
[   15.046634]  ? syscall_exit_to_user_mode+0x37/0x60
[   15.046636]  ? do_syscall_64+0x68/0x90
[   15.046638]  ? syscall_exit_to_user_mode+0x37/0x60
[   15.046639]  ? do_syscall_64+0x68/0x90
[   15.046641]  ? syscall_exit_to_user_mode+0x37/0x60
[   15.046642]  ? do_syscall_64+0x68/0x90
[   15.046644]  ? do_syscall_64+0x68/0x90
[   15.046645]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[   15.046648] RIP: 0033:0x7f9b9e7238ef
[   15.046668] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00
00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 18 48 8b 44 24 18 64 48 2b 04 25 28 00 00
[   15.046669] RSP: 002b:00007fff0ed9b9a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   15.046671] RAX: ffffffffffffffda RBX: 000000000239f8b8 RCX: 00007f9b9e7238ef
[   15.046672] RDX: 00007fff0ed9ba10 RSI: 000000000000001c RDI: 0000000000000004
[   15.046673] RBP: 00007fff0ed9ba50 R08: 000000000000242a R09: 0000000000000007
[   15.046674] R10: 000000000242a3c0 R11: 0000000000000246 R12: 00007fff0ed9ba10
[   15.046675] R13: 0000000000000004 R14: 0000000002506600 R15: 000000000237c138
[   15.046677]  </TASK>
[   15.046678] ================================================================================


whois the guilty ? the nvidia or the ubuntu developers ? Everything went well on ubuntu 23.04. I've made a mistake upgrading to Ubuntu 23.10. I have a lot of those errors on the log file and I can't open any audio-video streaming. To fix this ugly bug will take a lot of time for me.