Other Parts Discussed in Thread: WL1837
Tool/software:
Hi ,
I am currently working with the AM62x EVM and using the WL1837 module for Bluetooth communication. After configuring the system and attempting to initiate the Bluetooth HCI interface using the following command:
hciattach ttyS4 texas -s 115200
The system successfully recognizes the chip and loads the firmware, but I am encountering a kernel panic. The error trace suggests a fault occurring when the Bluetooth stack interacts with the system, particularly during the put_pid function execution. Below is the relevant part of the error message:
[ 218.945016] Unable to handle kernel paging request at virtual address ffff00102f38de08
[ 218.952985] Mem abort info:
[ 218.955768] ESR = 0x0000000096000005
...
[ 219.236921] ---[ end trace 0000000000000000 ]---
I have verified the configuration of the Bluetooth stack and ensured the proper enabling of rfcomm during kernel configuration (make menuconfig). Despite this, the issue persists, leading to a kernel panic upon attempting to load the Bluetooth HCI driver.
I would appreciate your assistance in troubleshooting this issue. It would be helpful if you could provide guidance on any kernel or configuration adjustments I may need to make to resolve this problem.
Looking forward to your response and support
root@am62xx-evm:~# hciattach ttyS4 texas -s 115200 Found a Texas Instruments' chip! Firmware file : /lib/firmware/ti-connectivity/TIInit_11.8.32.bts Loaded BTS script version 1 texas: changing baud rate to 3000000, flow control to 1 [ 217.910182] Bluetooth: HCI UART driver ver 2.3 [ 217.914683] Bluetooth: HCI UART protocol H4 registered [ 217.919933] Bluetooth: HCI UART protocol LL registered [ 217.925451] Bluetooth: HCI UART protocol Broadcom registered [ 217.931251] Bluetooth: HCI UART protocol QCA registered [ 217.936594] Bluetooth: HCI UART protocol Marvell registered [ 218.152443] Bluetooth: MGMT ver 1.22 [ 218.171682] af_alg: Unknown symbol alloc_pages (err -2) [ 218.177851] kauditd_printk_skb: 5 callbacks suppressed [ 218.177866] audit: type=1334 audit(1745299998.234:34): prog-id=24 op=LOAD [ 218.189865] audit: type=1334 audit(1745299998.238:35): prog-id=25 op=LOAD [ 218.196778] audit: type=1334 audit(1745299998.246:36): prog-id=26 op=LOAD [ 218.945016] Unable to handle kernel paging request at virtual address ffff00102f38de08 [ 218.952985] Mem abort info: [ 218.955768] ESR = 0x0000000096000005 [ 218.959524] EC = 0x25: DABT (current EL), IL = 32 bits [ 218.964836] SET = 0, FnV = 0 [ 218.967892] EA = 0, S1PTW = 0 [ 218.971031] FSC = 0x05: level 1 translation fault [ 218.975905] Data abort info: [ 218.978782] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 [ 218.984262] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 218.989311] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 218.994616] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000082fb7000 [ 219.001311] [ffff00102f38de08] pgd=18000000f7ff8003, p4d=18000000f7ff8003, pud=0000000000000000 [ 219.010011] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP [ 219.016266] Modules linked in: hci_uart btqca btbcm overlay wl18xx wlcore mac80211 libarc4 bluetooth cfg80211 rpmsg_ctrl rpmsg_char ecdh_generic irq_pruss_intc pru_rproc ecc rfkill cc33xx_sdio crct10dif_ce snd_soc_simple_card snd_soc_simple_card_utils wlcore_sdio rti_wdt k3_j72xx_bandgap ti_k3_r5_remoteproc ti_k3_m4_remoteproc rtc_ti_k3 snd_soc_davinci_mcasp sa2ul snd_soc_ti_udma authenc snd_soc_tlv320aic3x_i2c pruss at24 mcrc64 snd_soc_ti_edma snd_soc_ti_sdma snd_soc_tlv320aic3x tps6598x typec backlight ipv6 [ 219.061383] CPU: 1 PID: 1029 Comm: hciattach Not tainted 6.6.32-g98ba5d44ea48 #2 [ 219.068765] Hardware name: Texas Instruments AM625 SK (DT) [ 219.074236] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 219.081184] pc : put_pid.part.0+0x1c/0xac [ 219.085199] lr : put_pid+0x14/0x24 [ 219.088594] sp : ffff800082c63c80 [ 219.091895] x29: ffff800082c63c80 x28: ffff00002f48d580 x27: 0000000000000000 [ 219.099019] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 [ 219.106143] x23: ffff0000004d68e0 x22: ffff800079653800 x21: ffff80007966f150 [ 219.113266] x20: ffff0000037772c8 x19: ffff000003777000 x18: 0000000000000000 [ 219.120390] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 [ 219.127513] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 219.134636] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 [ 219.141759] x8 : ffff000005a255b4 x7 : 0000000000000140 x6 : ffff000003777144 [ 219.148882] x5 : 0000000000000024 x4 : 0000000000000000 x3 : 0000000000000001 [ 219.156005] x2 : 0000000000000000 x1 : ffff00002f48dda0 x0 : ffff00102f38dda0 [ 219.163129] Call trace: [ 219.165565] put_pid.part.0+0x1c/0xac [ 219.169221] put_pid+0x14/0x24 [ 219.172269] __sk_destruct+0xdc/0x224 [ 219.175925] sk_destruct+0x50/0x60 [ 219.179317] __sk_free+0x74/0x120 [ 219.182623] sk_free+0x64/0x88 [ 219.185668] hci_sock_release+0x54/0x260 [bluetooth] [ 219.190723] __sock_release+0x40/0xb4 [ 219.194379] sock_close+0x18/0x28 [ 219.197686] __fput+0xb4/0x274 [ 219.200736] __fput_sync+0x50/0x5c [ 219.204130] __arm64_sys_close+0x38/0x7c [ 219.208043] invoke_syscall+0x48/0x114 [ 219.211785] el0_svc_common.constprop.0+0xc0/0xe0 [ 219.216479] do_el0_svc+0x1c/0x28 [ 219.219784] el0_svc+0x2c/0x84 [ 219.222835] el0t_64_sync_handler+0x120/0x12c [ 219.227182] el0t_64_sync+0x190/0x194 [ 219.230841] Code: 910003fd f9000bf3 b9400400 8b001020 (f9403413) [ 219.236921] ---[ end trace 0000000000000000 ]---
