Hi, On Qualcomm Dragonboard 820c (APQ8096, QCA6174) soon after the boot I observe the following crash: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000018 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=000000010da63000 [0000000000000018] pgd=080000010da62003, p4d=080000010da62003, pud=080000010da61003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: hci_uart btqca CPU: 2 UID: 0 PID: 66 Comm: kworker/u19:0 Not tainted 6.10.0-next-20240726-13923-gd3ce7ebd61f9-dirty #2722 Hardware name: Qualcomm Technologies, Inc. DB820c (DT) Workqueue: hci0 hci_power_off pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : qca_power_shutdown+0x8c/0x210 [hci_uart] lr : qca_power_shutdown+0x7c/0x210 [hci_uart] sp : ffff8000836f3c50 x29: ffff8000836f3c50 x28: ffff00008337b900 x27: ffff000084085000 x26: 0000000000000000 x25: 0000000000000000 x24: ffff00009276f800 x23: ffff00009276f918 x22: ffff000081e1fc80 x21: 0000000000000001 x20: ffff000081e1fc80 x19: ffff00009276f800 x18: ffff0000de422170 x17: 0000000000061d88 x16: 0000000000000000 x15: 0000000000000001 x14: ffff0000813b3580 x13: 0000000000000000 x12: 00000000000001a0 x11: 0000000000000001 x10: 00000000000013f0 x9 : 0000000000000000 x8 : ffff8000836f3b40 x7 : 0000000000000000 x6 : ffff800080d52e88 x5 : 0000000000000000 x4 : ffff8000836f0000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : ffff00008f56d000 x0 : 0000000000000000 Call trace: qca_power_shutdown+0x8c/0x210 [hci_uart] qca_power_off+0x70/0xfb8 [hci_uart] hci_dev_close_sync+0x4b0/0x6d8 hci_power_off+0x2c/0x44 process_one_work+0x20c/0x62c worker_thread+0x1bc/0x36c kthread+0x120/0x124 ret_from_fork+0x10/0x20 Code: f9400681 b4000441 f9403c36 f94102c0 (f9400c00) ---[ end trace 0000000000000000 ]--- -- With best wishes Dmitry
