on different machine running 6.8.0-31-generic:

[ 8341.842158] ------------[ cut here ]------------
[ 8341.842166] UBSAN: array-index-out-of-bounds in /build/linux-yrLejD/linux-6.8.0/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8192e2ant.c:3005:36
[ 8341.842173] index 10 is out of range for type 'u8 [10]'
[ 8341.842177] CPU: 0 PID: 9796 Comm: kworker/0:2 Tainted: P          IO       6.8.0-31-generic #31-Ubuntu
[ 8341.842181] Hardware name: Dell Inc. Precision WorkStation T7500  /0D881F, BIOS A18 10/15/2018
[ 8341.842184] Workqueue: rtl92ee_pci rtl_c2hcmd_wq_callback [rtlwifi]
[ 8341.842211] Call Trace:
[ 8341.842213]  <TASK>
[ 8341.842217]  dump_stack_lvl+0x48/0x70
[ 8341.842227]  dump_stack+0x10/0x20
[ 8341.842231]  __ubsan_handle_out_of_bounds+0xc6/0x110
[ 8341.842237]  ex_btc8192e2ant_bt_info_notify+0x42b/0x4c0 [btcoexist]
[ 8341.842260]  exhalbtc_bt_info_notify+0x9c/0xe0 [btcoexist]
[ 8341.842284]  rtl_btc_btinfo_notify+0x1d/0x40 [btcoexist]
[ 8341.842305]  rtl_c2h_content_parsing.isra.0+0x66/0x100 [rtlwifi]
[ 8341.842322]  rtl_c2hcmd_wq_callback+0x3c/0x80 [rtlwifi]
[ 8341.842339]  process_one_work+0x16f/0x350
[ 8341.842345]  worker_thread+0x306/0x440
[ 8341.842349]  ? _raw_spin_lock_irqsave+0xe/0x20
[ 8341.842354]  ? __pfx_worker_thread+0x10/0x10
[ 8341.842358]  kthread+0xf2/0x120
[ 8341.842362]  ? __pfx_kthread+0x10/0x10
[ 8341.842365]  ret_from_fork+0x47/0x70
[ 8341.842369]  ? __pfx_kthread+0x10/0x10
[ 8341.842372]  ret_from_fork_asm+0x1b/0x30
[ 8341.842378]  </TASK>
[ 8341.842413] ---[ end trace ]---
[ 8341.847443] ------------[ cut here ]------------
[ 8341.847445] UBSAN: invalid-load in /build/linux-yrLejD/linux-6.8.0/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8192e2ant.c:889:11
[ 8341.847450] load of value 248 is not a valid value for type '_Bool'
[ 8341.847453] CPU: 0 PID: 9796 Comm: kworker/0:2 Tainted: P          IO       6.8.0-31-generic #31-Ubuntu
[ 8341.847456] Hardware name: Dell Inc. Precision WorkStation T7500  /0D881F, BIOS A18 10/15/2018
[ 8341.847458] Workqueue: rtl92ee_pci rtl_c2hcmd_wq_callback [rtlwifi]
[ 8341.847477] Call Trace:
[ 8341.847479]  <TASK>
[ 8341.847481]  dump_stack_lvl+0x48/0x70
[ 8341.847486]  dump_stack+0x10/0x20
[ 8341.847490]  __ubsan_handle_load_invalid_value+0xce/0x120
[ 8341.847495]  btc8192e2ant_rf_shrink.constprop.0.cold+0x79/0xb2 [btcoexist]
[ 8341.847517]  btc8192e2ant_run_coexist_mechanism.part.0+0x1be/0x2c0 [btcoexist]
[ 8341.847534]  btc8192e2ant_run_coexist_mechanism+0x54/0x70 [btcoexist]
[ 8341.847550]  ex_btc8192e2ant_bt_info_notify+0x30f/0x4c0 [btcoexist]
[ 8341.847569]  exhalbtc_bt_info_notify+0x9c/0xe0 [btcoexist]
[ 8341.847592]  rtl_btc_btinfo_notify+0x1d/0x40 [btcoexist]
[ 8341.847613]  rtl_c2h_content_parsing.isra.0+0x66/0x100 [rtlwifi]
[ 8341.847630]  rtl_c2hcmd_wq_callback+0x3c/0x80 [rtlwifi]
[ 8341.847647]  process_one_work+0x16f/0x350
[ 8341.847652]  worker_thread+0x306/0x440
[ 8341.847656]  ? _raw_spin_lock_irqsave+0xe/0x20
[ 8341.847660]  ? __pfx_worker_thread+0x10/0x10
[ 8341.847664]  kthread+0xf2/0x120
[ 8341.847668]  ? __pfx_kthread+0x10/0x10
[ 8341.847671]  ret_from_fork+0x47/0x70
[ 8341.847674]  ? __pfx_kthread+0x10/0x10
[ 8341.847677]  ret_from_fork_asm+0x1b/0x30
[ 8341.847683]  </TASK>
[ 8341.847695] ---[ end trace ]---
[ 8341.847697] ------------[ cut here ]------------
[ 8341.847698] UBSAN: invalid-load in /build/linux-yrLejD/linux-6.8.0/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8192e2ant.c:892:14
[ 8341.847702] load of value 248 is not a valid value for type '_Bool'
[ 8341.847704] CPU: 0 PID: 9796 Comm: kworker/0:2 Tainted: P          IO       6.8.0-31-generic #31-Ubuntu
[ 8341.847707] Hardware name: Dell Inc. Precision WorkStation T7500  /0D881F, BIOS A18 10/15/2018
[ 8341.847709] Workqueue: rtl92ee_pci rtl_c2hcmd_wq_callback [rtlwifi]
[ 8341.847727] Call Trace:
[ 8341.847728]  <TASK>
[ 8341.847730]  dump_stack_lvl+0x48/0x70
[ 8341.847735]  dump_stack+0x10/0x20
[ 8341.847738]  __ubsan_handle_load_invalid_value+0xce/0x120
[ 8341.847743]  btc8192e2ant_rf_shrink.constprop.0.cold+0x98/0xb2 [btcoexist]
[ 8341.847765]  btc8192e2ant_run_coexist_mechanism.part.0+0x1be/0x2c0 [btcoexist]
[ 8341.847782]  btc8192e2ant_run_coexist_mechanism+0x54/0x70 [btcoexist]
[ 8341.847798]  ex_btc8192e2ant_bt_info_notify+0x30f/0x4c0 [btcoexist]
[ 8341.847817]  exhalbtc_bt_info_notify+0x9c/0xe0 [btcoexist]
[ 8341.847840]  rtl_btc_btinfo_notify+0x1d/0x40 [btcoexist]
[ 8341.847861]  rtl_c2h_content_parsing.isra.0+0x66/0x100 [rtlwifi]
[ 8341.847878]  rtl_c2hcmd_wq_callback+0x3c/0x80 [rtlwifi]
[ 8341.847895]  process_one_work+0x16f/0x350
[ 8341.847900]  worker_thread+0x306/0x440
[ 8341.847904]  ? _raw_spin_lock_irqsave+0xe/0x20
[ 8341.847908]  ? __pfx_worker_thread+0x10/0x10
[ 8341.847912]  kthread+0xf2/0x120
[ 8341.847916]  ? __pfx_kthread+0x10/0x10
[ 8341.847919]  ret_from_fork+0x47/0x70
[ 8341.847923]  ? __pfx_kthread+0x10/0x10
[ 8341.847926]  ret_from_fork_asm+0x1b/0x30
[ 8341.847931]  </TASK>
[ 8341.847932] ---[ end trace ]---
[ 8341.847934] ------------[ cut here ]------------
[ 8341.847936] UBSAN: invalid-load in /build/linux-yrLejD/linux-6.8.0/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8192e2ant.c:998:11
[ 8341.847939] load of value 240 is not a valid value for type '_Bool'
[ 8341.847942] CPU: 0 PID: 9796 Comm: kworker/0:2 Tainted: P          IO       6.8.0-31-generic #31-Ubuntu
[ 8341.847945] Hardware name: Dell Inc. Precision WorkStation T7500  /0D881F, BIOS A18 10/15/2018
[ 8341.847946] Workqueue: rtl92ee_pci rtl_c2hcmd_wq_callback [rtlwifi]
[ 8341.847964] Call Trace:
[ 8341.847965]  <TASK>
[ 8341.847966]  dump_stack_lvl+0x48/0x70
[ 8341.847971]  dump_stack+0x10/0x20
[ 8341.847975]  __ubsan_handle_load_invalid_value+0xce/0x120
[ 8341.847979]  btc8192e2ant_sw_mechanism2.constprop.0.cold+0xd2/0x129 [btcoexist]
[ 8341.848001]  btc8192e2ant_run_coexist_mechanism.part.0+0x1cf/0x2c0 [btcoexist]
[ 8341.848018]  btc8192e2ant_run_coexist_mechanism+0x54/0x70 [btcoexist]
[ 8341.848034]  ex_btc8192e2ant_bt_info_notify+0x30f/0x4c0 [btcoexist]
[ 8341.848053]  exhalbtc_bt_info_notify+0x9c/0xe0 [btcoexist]
[ 8341.848076]  rtl_btc_btinfo_notify+0x1d/0x40 [btcoexist]
[ 8341.848097]  rtl_c2h_content_parsing.isra.0+0x66/0x100 [rtlwifi]
[ 8341.848114]  rtl_c2hcmd_wq_callback+0x3c/0x80 [rtlwifi]
[ 8341.848131]  process_one_work+0x16f/0x350
[ 8341.848136]  worker_thread+0x306/0x440
[ 8341.848140]  ? _raw_spin_lock_irqsave+0xe/0x20
[ 8341.848144]  ? __pfx_worker_thread+0x10/0x10
[ 8341.848148]  kthread+0xf2/0x120
[ 8341.848151]  ? __pfx_kthread+0x10/0x10
[ 8341.848155]  ret_from_fork+0x47/0x70
[ 8341.848158]  ? __pfx_kthread+0x10/0x10
[ 8341.848161]  ret_from_fork_asm+0x1b/0x30
[ 8341.848166]  </TASK>
[ 8341.848171] ---[ end trace ]---
[ 8341.848173] ------------[ cut here ]------------
[ 8341.848174] UBSAN: invalid-load in /build/linux-yrLejD/linux-6.8.0/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8192e2ant.c:1001:14
[ 8341.848177] load of value 240 is not a valid value for type '_Bool'
[ 8341.848179] CPU: 0 PID: 9796 Comm: kworker/0:2 Tainted: P          IO       6.8.0-31-generic #31-Ubuntu
[ 8341.848182] Hardware name: Dell Inc. Precision WorkStation T7500  /0D881F, BIOS A18 10/15/2018
[ 8341.848184] Workqueue: rtl92ee_pci rtl_c2hcmd_wq_callback [rtlwifi]
[ 8341.848202] Call Trace:
[ 8341.848203]  <TASK>
[ 8341.848205]  dump_stack_lvl+0x48/0x70
[ 8341.848210]  dump_stack+0x10/0x20
[ 8341.848213]  __ubsan_handle_load_invalid_value+0xce/0x120
[ 8341.848218]  btc8192e2ant_sw_mechanism2.constprop.0.cold+0xf4/0x129 [btcoexist]
[ 8341.848240]  btc8192e2ant_run_coexist_mechanism.part.0+0x1cf/0x2c0 [btcoexist]
[ 8341.848257]  btc8192e2ant_run_coexist_mechanism+0x54/0x70 [btcoexist]
[ 8341.848274]  ex_btc8192e2ant_bt_info_notify+0x30f/0x4c0 [btcoexist]
[ 8341.848292]  exhalbtc_bt_info_notify+0x9c/0xe0 [btcoexist]
[ 8341.848315]  rtl_btc_btinfo_notify+0x1d/0x40 [btcoexist]
[ 8341.848336]  rtl_c2h_content_parsing.isra.0+0x66/0x100 [rtlwifi]
[ 8341.848354]  rtl_c2hcmd_wq_callback+0x3c/0x80 [rtlwifi]
[ 8341.848371]  process_one_work+0x16f/0x350
[ 8341.848376]  worker_thread+0x306/0x440
[ 8341.848380]  ? _raw_spin_lock_irqsave+0xe/0x20
[ 8341.848384]  ? __pfx_worker_thread+0x10/0x10
[ 8341.848388]  kthread+0xf2/0x120
[ 8341.848392]  ? __pfx_kthread+0x10/0x10
[ 8341.848395]  ret_from_fork+0x47/0x70
[ 8341.848398]  ? __pfx_kthread+0x10/0x10
[ 8341.848402]  ret_from_fork_asm+0x1b/0x30
[ 8341.848407]  </TASK>
[ 8341.848408] ---[ end trace ]---
[ 8341.848410] ------------[ cut here ]------------
[ 8341.848411] UBSAN: invalid-load in /build/linux-yrLejD/linux-6.8.0/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8192e2ant.c:939:11
[ 8341.848414] load of value 239 is not a valid value for type '_Bool'
[ 8341.848416] CPU: 0 PID: 9796 Comm: kworker/0:2 Tainted: P          IO       6.8.0-31-generic #31-Ubuntu
[ 8341.848419] Hardware name: Dell Inc. Precision WorkStation T7500  /0D881F, BIOS A18 10/15/2018
[ 8341.848421] Workqueue: rtl92ee_pci rtl_c2hcmd_wq_callback [rtlwifi]
[ 8341.848440] Call Trace:
[ 8341.848441]  <TASK>
[ 8341.848443]  dump_stack_lvl+0x48/0x70
[ 8341.848448]  dump_stack+0x10/0x20
[ 8341.848451]  __ubsan_handle_load_invalid_value+0xce/0x120
[ 8341.848456]  btc8192e2ant_sw_mechanism2.constprop.0.cold+0x23/0x129 [btcoexist]
[ 8341.848478]  btc8192e2ant_run_coexist_mechanism.part.0+0x1cf/0x2c0 [btcoexist]
[ 8341.848496]  btc8192e2ant_run_coexist_mechanism+0x54/0x70 [btcoexist]
[ 8341.848512]  ex_btc8192e2ant_bt_info_notify+0x30f/0x4c0 [btcoexist]
[ 8341.848531]  exhalbtc_bt_info_notify+0x9c/0xe0 [btcoexist]
[ 8341.848554]  rtl_btc_btinfo_notify+0x1d/0x40 [btcoexist]
[ 8341.848576]  rtl_c2h_content_parsing.isra.0+0x66/0x100 [rtlwifi]
[ 8341.848593]  rtl_c2hcmd_wq_callback+0x3c/0x80 [rtlwifi]
[ 8341.848611]  process_one_work+0x16f/0x350
[ 8341.848616]  worker_thread+0x306/0x440
[ 8341.848620]  ? _raw_spin_lock_irqsave+0xe/0x20
[ 8341.848624]  ? __pfx_worker_thread+0x10/0x10
[ 8341.848628]  kthread+0xf2/0x120
[ 8341.848632]  ? __pfx_kthread+0x10/0x10
[ 8341.848635]  ret_from_fork+0x47/0x70
[ 8341.848638]  ? __pfx_kthread+0x10/0x10
[ 8341.848641]  ret_from_fork_asm+0x1b/0x30
[ 8341.848646]  </TASK>
[ 8341.848663] ---[ end trace ]---
[ 8341.848666] ------------[ cut here ]------------
[ 8341.848667] UBSAN: invalid-load in /build/linux-yrLejD/linux-6.8.0/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8192e2ant.c:946:15
[ 8341.848670] load of value 239 is not a valid value for type '_Bool'
[ 8341.848673] CPU: 0 PID: 9796 Comm: kworker/0:2 Tainted: P          IO       6.8.0-31-generic #31-Ubuntu
[ 8341.848676] Hardware name: Dell Inc. Precision WorkStation T7500  /0D881F, BIOS A18 10/15/2018
[ 8341.848678] Workqueue: rtl92ee_pci rtl_c2hcmd_wq_callback [rtlwifi]
[ 8341.848696] Call Trace:
[ 8341.848698]  <TASK>
[ 8341.848699]  dump_stack_lvl+0x48/0x70
[ 8341.848704]  dump_stack+0x10/0x20
[ 8341.848708]  __ubsan_handle_load_invalid_value+0xce/0x120
[ 8341.848713]  btc8192e2ant_sw_mechanism2.constprop.0.cold+0x57/0x129 [btcoexist]
[ 8341.848735]  btc8192e2ant_run_coexist_mechanism.part.0+0x1cf/0x2c0 [btcoexist]
[ 8341.848752]  btc8192e2ant_run_coexist_mechanism+0x54/0x70 [btcoexist]
[ 8341.848769]  ex_btc8192e2ant_bt_info_notify+0x30f/0x4c0 [btcoexist]
[ 8341.848787]  exhalbtc_bt_info_notify+0x9c/0xe0 [btcoexist]
[ 8341.848810]  rtl_btc_btinfo_notify+0x1d/0x40 [btcoexist]
[ 8341.848832]  rtl_c2h_content_parsing.isra.0+0x66/0x100 [rtlwifi]
[ 8341.848849]  rtl_c2hcmd_wq_callback+0x3c/0x80 [rtlwifi]
[ 8341.848866]  process_one_work+0x16f/0x350
[ 8341.848872]  worker_thread+0x306/0x440
[ 8341.848876]  ? _raw_spin_lock_irqsave+0xe/0x20
[ 8341.848880]  ? __pfx_worker_thread+0x10/0x10
[ 8341.848884]  kthread+0xf2/0x120
[ 8341.848888]  ? __pfx_kthread+0x10/0x10
[ 8341.848891]  ret_from_fork+0x47/0x70
[ 8341.848894]  ? __pfx_kthread+0x10/0x10
[ 8341.848897]  ret_from_fork_asm+0x1b/0x30
[ 8341.848903]  </TASK>
[ 8341.848904] ---[ end trace ]---