[  274.222847] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
[  274.223632] Mem abort info:
[  274.223887]   ESR = 0x96000006
[  274.224257]   EC = 0x25: DABT (current EL), IL = 32 bits
[  274.224732]   SET = 0, FnV = 0
[  274.225009]   EA = 0, S1PTW = 0
[  274.225290] Data abort info:
[  274.225550]   ISV = 0, ISS = 0x00000006
[  274.225893]   CM = 0, WnR = 0
[  274.226166] user pgtable: 4k pages, 48-bit VAs, pgdp=00000000f015c000
[  274.226736] [0000000000000000] pgd=00000000f0bb2003, pud=00000000f0bb3003, pmd=0000000000000000
[  274.227569] Internal error: Oops: 96000006 [#1] PREEMPT SMP
[  274.228068] Modules linked in: gpio_ir_recv rc_core
[  274.228522] CPU: 2 PID: 961 Comm: kmscube Not tainted 5.4.0-rc1 #1
[  274.229070] Hardware name: Pine64 Rock64 (DT)
[  274.229464] pstate: 60000005 (nZCv daif -PAN -UAO)
[  274.229909] pc : drm_gem_fence_array_add+0x94/0x1a0
[  274.230352] lr : drm_gem_fence_array_add+0x74/0x1a0
[  274.230786] sp : ffff8000119d3a40
[  274.231086] x29: ffff8000119d3a40 x28: 0000000000000000
[  274.231565] x27: ffff0000e5ff5200 x26: ffff0000f39d6e80
[  274.232043] x25: 0000000000000002 x24: ffff0000e5ff5280
[  274.232522] x23: ffff80001153b000 x22: ffff0000e5ff5280
[  274.233000] x21: ffff80001153b000 x20: ffff0000f4678000
[  274.233479] x19: ffff8000119d3a80 x18: 0000000000000000
[  274.233956] x17: 0000000000000000 x16: 0000000000000000
[  274.234433] x15: 0000000000000000 x14: 0000000000000000
[  274.234907] x13: 0000000000000000 x12: 0000000000000000
[  274.235373] x11: 0000000000000000 x10: 0000000000000000
[  274.235837] x9 : 0000000000000001 x8 : ffffffffffffffff
[  274.236303] x7 : 0000000000000228 x6 : ffff8000119d3a08
[  274.236768] x5 : 3fffc0003d19e000 x4 : ffff8000119d3a08
[  274.237233] x3 : ffff0000f4670c80 x2 : 0000000000000000
[  274.237698] x1 : ffff0000f4670c80 x0 : ffff0000f4678000
[  274.238164] Call trace:
[  274.238384]  drm_gem_fence_array_add+0x94/0x1a0
[  274.238784]  drm_gem_fence_array_add_implicit+0x84/0x198
[  274.239251]  lima_gem_submit+0x334/0x4f0
[  274.239598]  lima_ioctl_gem_submit+0x2a8/0x2d0
[  274.239987]  drm_ioctl_kernel+0xc0/0x118
[  274.240332]  drm_ioctl+0x210/0x440
[  274.240634]  do_vfs_ioctl+0xbc/0x980
[  274.240949]  ksys_ioctl+0x84/0x98
[  274.241242]  __arm64_sys_ioctl+0x1c/0x28
[  274.241590]  el0_svc_common.constprop.1+0xa8/0x100
[  274.242011]  el0_svc_handler+0x20/0x78
[  274.242341]  el0_svc+0x8/0xc
[  274.242600] Code: 54fffee1 f9400682 f9401403 f9401681 (39400042)
[  274.243134] ---[ end trace f1929356e78ce924 ]---