[   74.205164][    T1] Testing tracer wakeup_dl: PASSED
[   79.882699][    T1] Testing tracer function_graph: 
[   82.608312][    T1] Unable to handle kernel read from unreadable memory at virtual address 0000000013bf63c0
[   82.615024][    T1] Mem abort info:
[   82.616727][    T1]   ESR = 0x96000004
[   82.618575][    T1]   Exception class = DABT (current EL), IL = 32 bits
[   82.621627][    T1]   SET = 0, FnV = 0
[   82.623333][    T1]   EA = 0, S1PTW = 0
[   82.625087][    T1] Data abort info:
[   82.626823][    T1]   ISV = 0, ISS = 0x00000004
[   82.629034][    T1]   CM = 0, WnR = 0
[   82.630780][    T1] [0000000013bf63c0] user address but active_mm is swapper
[   82.634187][    T1] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[   82.637171][    T1] Modules linked in:
[   82.639001][    T1] Process swapper/0 (pid: 1, stack limit = 0x(____ptrval____))
[   82.642462][    T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.1.0-next-20190515-00013-gcdaa9c7ed3c3 #1
[   82.646912][    T1] Hardware name: linux,dummy-virt (DT)
[   82.649375][    T1] pstate: 60400085 (nZCv daIf +PAN -UAO)
[   82.651990][    T1] pc : sched_clock+0xe8/0x250
[   82.654190][    T1] lr : sched_clock+0xe8/0x250
[   82.656336][    T1] sp : ffff80003f6626f0
[   82.658172][    T1] x29: ffff80003f6626f0 x28: 0000000013bf63b8 
[   82.661070][    T1] x27: ffff80003f660958 x26: ffff200013bf63c0 
[   82.663926][    T1] x25: 0000dfffec409c4c x24: ffff200013bf63b8 
[   82.666873][    T1] x23: ffff200013bf6380 x22: 0000000000000004 
[   82.669765][    T1] x21: 0000dfffec409c50 x20: 0000000000000000 
[   82.672681][    T1] x19: 000000021bf7ff1e x18: 0000000000001400 
[   82.675622][    T1] x17: 0000000000000028 x16: 0000000000000000 
[   82.678518][    T1] x15: 0000000000001488 x14: 1ffff00007ecdecc 
[   82.681412][    T1] x13: 00000000f1f1f1f1 x12: ffff100007ecc4c0 
[   82.684301][    T1] x11: 0000000007ecc4bf x10: ffff100007ecc4bf 
[   82.687222][    T1] x9 : 1ffff00007ecc4bf x8 : dfff200000000000 
[   82.690152][    T1] x7 : ffff100007ecc4c0 x6 : ffff80003f6625ff 
[   82.693095][    T1] x5 : ffff80003f660040 x4 : dfff200000000000 
[   82.695985][    T1] x3 : ffff200010167350 x2 : 0000000000000007 
[   82.698806][    T1] x1 : ffff200013bf63c0 x0 : 0000000000000000 
[   82.701550][    T1] Call trace:
[   82.703061][    T1] Code: 942c28ac d503201f aa1a03e0 940e60db (f9400780) 
[   82.706328][    T1] _warn_unseeded_randomness: 73 callbacks suppressed
[   82.706416][    T1] random: get_random_bytes called from print_oops_end_marker+0x44/0x78 with crng_init=0
[   82.713966][    T1] ---[ end trace 859cba3b360c6104 ]---
[   82.716394][    T1] Kernel panic - not syncing: Fatal exception
[   82.719339][    T1] ---[ end Kernel panic - not syncing: Fatal exception ]---
zsh: killed     sudo qemu-system-aarch64 --enable-kvm -cpu cortex-a53 -kernel Image-20190515