Hi Dan,

you could try an image created with
https://github.com/siemens/jailhouse-images

That will give you a reference image that is well tested and might not
have the issue you ran into.

Does the problem appear every time or just sometimes? Might be a race
in the cpu offlining.

Henning

Am Wed, 23 Jan 2019 02:10:57 -0800
schrieb Dan Avram <[email protected]>:

> Hello,
> 
> I tried to run jailhouse on a BananaPi BPI-M1 as described on the
> Jailhouse Documentation [1]. I configured the u-boot parameters as
> described(with mem=932M vmalloc=512M), and did all the steps
> described in [1] and all is fine until I run the command 
> 
> $ jailhouse cell create
> ~/jailhouse/configs/arm/bannapi-freertos-demo.cell
> 
> After running the command there is some logging on the screen [2] and
> the console freezes. I tried to do it all over again, but same thing
> happens.
> 
> 
> 
> [1]
> https://github.com/siemens/jailhouse/blob/master/Documentation/setup-on-banana-pi-arm-board.md
> 
> [2] 
> [  231.636652]
> [  231.638175] ===============================
> [  231.642357] [ INFO: suspicious RCU usage. ]
> [  231.646544] 4.3.3-dirty #1 Tainted: G           O
> [  231.651503] -------------------------------
> [  231.655685] include/trace/events/sched.h:89 suspicious
> rcu_dereference_check() usage! [  231.663505]
> [  231.663505] other info that might help us debug this:
> [  231.663505]
> [  231.671506]
> [  231.671506] RCU used illegally from offline CPU!
> [  231.671506] rcu_scheduler_active = 1, debug_locks = 0
> [  231.682627] 2 locks held by swapper/1/0:
> [  231.686547]  #0:  ((cpu_died).wait.lock){......}, at: [<c006f46c>]
> complete+0x24/0x54 [  231.694462]  #1:  (&p->pi_lock){-.-.-.}, at:
> [<c0054184>] try_to_wake_up+0x34/0x4a0 [  231.702193]
> [  231.702193] stack backtrace:
> [  231.706556] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G
> O    4.3.3-dirty #1 [  231.714116] Hardware name: Allwinner sun7i
> (A20) Family [  231.719357] [<c001854c>] (unwind_backtrace) from
> [<c0014140>] (show_stack+0x20/0x24) [  231.727104] [<c0014140>]
> (show_stack) from [<c02d3c4c>] (dump_stack+0x84/0xb4) [  231.734332]
> [<c02d3c4c>] (dump_stack) from [<c0077128>]
> (lockdep_rcu_suspicious+0xd8/0x114) [  231.742685] [<c0077128>]
> (lockdep_rcu_suspicious) from [<c0054260>]
> (try_to_wake_up+0x110/0x4a0) [  231.751472] [<c0054260>]
> (try_to_wake_up) from [<c00546d4>] (default_wake_function+0x1c/0x20)
> [  231.759996] [<c00546d4>] (default_wake_function) from [<c006ec10>]
> (__wake_up_common+0x58/0x84) [  231.768691] [<c006ec10>]
> (__wake_up_common) from [<c006ecbc>] (__wake_up_locked+0x24/0x2c)
> [  231.776953] [<c006ecbc>] (__wake_up_locked) from [<c006f48c>]
> (complete+0x44/0x54) [  231.784522] [<c006f48c>] (complete) from
> [<c0016614>] (arch_cpu_idle_dead+0x3c/0x9c) [  231.792265]
> [<c0016614>] (arch_cpu_idle_dead) from [<c006f78c>]
> (cpu_startup_entry+0x9c/0x358) [  231.800875] [<c006f78c>]
> (cpu_startup_entry) from [<c00167a0>]
> (secondary_start_kernel+0x12c/0x14c) [  231.809918] [<c00167a0>]
> (secondary_start_kernel) from [<4000966c>] (0x4000966c)
> [  231.817387] CPU1: shutdown Adding virtual PCI device 00:00.0 to
> cell "FreeRTOS" Shared memory connection established: "FreeRTOS" <-->
> "Banana-Pi" Created cell "FreeRTOS" Page pool usage after cell
> creation: mem 77/16360, remap 5/131072 [  231.839804] Created
> Jailhouse cell "FreeRTOS" root@bananapi ~ # Unhandled data read at
> 0x1c2090c(4) FATAL: unhandled trap (exception class 0x24)
> pc=0xc030c584 cpsr=0x60000193 hsr=0x93840007 r0=0x40000113
> r1=0x03940393 r2=0x00000000 r3=0xdf89a90c r4=0x00000001 r5=0x00000018
> r6=0x0000010c r7=0xde3a9fbc r8=0xde3a9f90 r9=0x40000113
> r10=0x00000001 r11=0xc087fd24 r12=0xc087fcc8 r13=0xc087fcf8
> r14=0xc05c9640 Parking CPU 0 (Cell: "Banana-Pi")
> 

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