Comment 0 for bug 1894613

 5.8.0-1-generic (buildd@riscv64-qemu-lcy01-015) (gcc (Ubuntu 10.2.0-5ubuntu2) 10.2.0, GNU ld (GNU Binutils for Ubuntu) 2.35) #1-Ubuntu SMP Thu Aug 27 19:51:38 UTC 2020 (Ubuntu 5.8.0-1.1-generic 5.8.4

18:30:06 DEBUG| [stdout] # selftests: ftrace: ftracetest^M^M
18:30:07 DEBUG| [stdout] # === Ftrace unit tests ===^M^M
18:30:10 DEBUG| [stdout] # [1] Basic trace file check [PASS]^M^M
[17433.113458] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M
[17433.113533] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M
[17433.113552] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M
[17433.113573] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M
[17433.113591] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M
[17433.114290] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M
[17433.114306] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M
[17433.114315] Oops [#1]^M^M
[17433.114630] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000^M^M
[17433.114690] Modules linked in: virtio_rng binfmt_misc uio_pdrv_genirq uio drm sch_fq_codel drm_panel_orientation_quirks backlight ip_tables x_tables autofs4 virtio_net net_failover virtio_blk failover [last unloaded: signpost]^M^M
[17433.115296] CPU: 1 PID: 15 Comm: migration/1 Tainted: G W OE 5.8.0-1-generic #1-Ubuntu^M^M
[17433.115419] epc: 0000000000000000 ra : 0000000000000000 sp : ffffffe1f5c67d90^M^M
[17433.115442] gp : ffffffe001722298 tp : ffffffe1f5c3ae00 t0 : 0000000000000000^M^M
[17433.115459] t1 : 0000000000006000 t2 : 00000000000bbc00 s0 : 0000000000000022^M^M
[17433.115475] s1 : ffffffe0002b7c12 a0 : ffffffe000963a64 a1 : 0000000000000022^M^M
[17433.115491] a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000^M^M
[17433.115507] a5 : ffffffe1fec95580 a6 : 00000000000000ff a7 : 0000000000000001^M^M
[17433.115523] s2 : 0000000000000001 s3 : ffffffe00009d580 s4 : ffffffe001724210^M^M
[17433.115540] s5 : ffffffe1fec9a3b8 s6 : ffffffffffffffff s7 : 0000000000000001^M^M
[17433.115556] s8 : ffffffe0016f07cb s9 : ffffffe1e909bb80 s10: ffffffe0002b7ba6^M^M
[17433.115573] s11: ffffffe1e909bba8 t3 : 000000000000006c t4 : 00000000002c73ba^M^M
[17433.115586] t5 : 00000000001f7fa8 t6 : ffffffe000c02d1c^M^M
[17433.115603] status: 0000000000000120 badaddr: 0000000000000000 cause: 000000000000000c^M^M