head -r323246 Pine64+ 2GB boot time context: acquiring blockable sleep lock with spinlock or critical section held for data_abort calling pmap_fault calling __mtx_lock_flags
Mark Millard
markmi at dsl-only.net
Sun Sep 10 22:25:29 UTC 2017
[I got a boot-time panic with a debug kernel that
reported a "acquiring blockable sleep lock with
spinlock or critical section held (sleep mutex)".
This was for data_abort calling pmap_fault calling
__mtx_lock_flags . I first include prior non-debug
kernel reports in case they are related.]
On 2017-Sep-10, at 1:34 AM, Mark Millard <markmi at dsl-only.net> wrote:
> . . .
>
> Booting with the non-debug kernel appears to hang for
> a bit and then gets to a db> prompt and a bt showed
> (for example):
> (The console output for the register dump seems
> to always be incomplete and there is a wait to
> end up at the db> prompt. Note the data_abort
> closest to the fork_exit .)
>
> . . .
> Release APs
> APs not started
> CPU 0: ARM Cortex-A53 r0p4 affinity: 0
> Instruction Set Attributes 0 = <AES+PMULL,SHA1,SHA2,CRC32>
> Instruction Set Attributes 1 = <0>
> Processor Features 0 = <AdvSIMD,Float,EL3 32,EL2 32,EL1 32,EL0 32>
> Processor Features 1 = <0>
> Memory Model Features 0 = <4k Granule,64k Granule,MixedEndian,S/NS Mem,16bit ASID,1TB PA>
> Memory Model Features 1 = <>
> Debug Features 0 = <2 CTX Breakpoints,4 Watchpoints,6 Breakpoints,PMUv3,Debug v8>
> Debug Features 1 = <0>
> Auxiliary Features 0 = <0>
> Auxiliary Features 1 = <0>
> CPU 1: (null) (null) r0p0 affinity: 0
> CPU 2: (null) (null) r0p0 affinity: 0
> CPU 3: (null) (null) r0p0 affinity: 0
> x0: ffff000000a1c000
> x1: fffffd000103a[ thread pid 0 tid 100057 ]
> Stopped at thread_lock_flags_+0x298: ldr w4, [x3, #156]
> db> bt
> Tracing pid 0 tid 100057 td 0xfffffd000103a000
> db_trace_self() at db_stack_trace+0xec
> pc = 0xffff000000613688 lr = 0xffff000000084db4
> sp = 0xffff0000698f4260 fp = 0xffff0000698f4290
>
> db_stack_trace() at db_command+0x224
> pc = 0xffff000000084db4 lr = 0xffff000000084a3c
> sp = 0xffff0000698f42a0 fp = 0xffff0000698f4380
>
> db_command() at db_command_loop+0x60
> pc = 0xffff000000084a3c lr = 0xffff0000000847fc
> sp = 0xffff0000698f4390 fp = 0xffff0000698f43b0
>
> db_command_loop() at db_trap+0xf4
> pc = 0xffff0000000847fc lr = 0xffff000000087964
> sp = 0xffff0000698f43c0 fp = 0xffff0000698f45e0
>
> db_trap() at kdb_trap+0x180
> pc = 0xffff000000087964 lr = 0xffff0000003693e0
> sp = 0xffff0000698f45f0 fp = 0xffff0000698f4650
>
> kdb_trap() at do_el1h_sync+0x90
> pc = 0xffff0000003693e0 lr = 0xffff00000062956c
> sp = 0xffff0000698f4660 fp = 0xffff0000698f4690
>
> do_el1h_sync() at handle_el1h_sync+0x74
> pc = 0xffff00000062956c lr = 0xffff000000615074
> sp = 0xffff0000698f46a0 fp = 0xffff0000698f47b0
>
> handle_el1h_sync() at kdb_enter+0x38
> pc = 0xffff000000615074 lr = 0xffff000000368ac8
> sp = 0xffff0000698f47c0 fp = 0xffff0000698f4850
>
> kdb_enter() at vpanic+0x180
> pc = 0xffff000000368ac8 lr = 0xffff000000326dd8
> sp = 0xffff0000698f4860 fp = 0xffff0000698f48d0
>
> vpanic() at panic+0x48
> pc = 0xffff000000326dd8 lr = 0xffff000000326c54
> sp = 0xffff0000698f48e0 fp = 0xffff0000698f4960
>
> panic() at data_abort+0x21c
> pc = 0xffff000000326c54 lr = 0xffff0000006298e8
> sp = 0xffff0000698f4970 fp = 0xffff0000698f4a20
>
> data_abort() at do_el1h_sync+0xfc
> pc = 0xffff0000006298e8 lr = 0xffff0000006295d8
> sp = 0xffff0000698f4a30 fp = 0xffff0000698f4a60
>
> do_el1h_sync() at handle_el1h_sync+0x74
> pc = 0xffff0000006295d8 lr = 0xffff000000615074
> sp = 0xffff0000698f4a70 fp = 0xffff0000698f4b80
>
> handle_el1h_sync() at thread_lock_flags_+0x1a8
> pc = 0xffff000000615074 lr = 0xffff000000309060
> sp = 0xffff0000698f4b90 fp = 0xffff0000698f4c80
>
> thread_lock_flags_() at statclock_cnt+0x11c
> pc = 0xffff000000309060 lr = 0xffff0000002c5b90
> sp = 0xffff0000698f4c90 fp = 0xffff0000698f4cb0
>
> statclock_cnt() at handleevents+0x108
> pc = 0xffff0000002c5b90 lr = 0xffff00000064ad84
> sp = 0xffff0000698f4cc0 fp = 0xffff0000698f4d00
>
> handleevents() at timercb+0xe0
> pc = 0xffff00000064ad84 lr = 0xffff00000064b51c
> sp = 0xffff0000698f4d10 fp = 0xffff0000698f4d80
>
> timercb() at arm_tmr_intr+0x58
> pc = 0xffff00000064b51c lr = 0xffff000000600e5c
> sp = 0xffff0000698f4d90 fp = 0xffff0000698f4d90
>
> arm_tmr_intr() at intr_event_handle+0x64
> pc = 0xffff000000600e5c lr = 0xffff0000002edd50
> sp = 0xffff0000698f4da0 fp = 0xffff0000698f4dd0
>
> intr_event_handle() at intr_isrc_dispatch+0x30
> pc = 0xffff0000002edd50 lr = 0xffff00000064d8ec
> sp = 0xffff0000698f4de0 fp = 0xffff0000698f4df0
>
> intr_isrc_dispatch() at arm_gic_intr+0xf0
> pc = 0xffff00000064d8ec lr = 0xffff000000601848
> sp = 0xffff0000698f4e00 fp = 0xffff0000698f4e50
>
> arm_gic_intr() at intr_irq_handler+0x60
> pc = 0xffff000000601848 lr = 0xffff00000064d6e0
> sp = 0xffff0000698f4e60 fp = 0xffff0000698f4e80
>
> intr_irq_handler() at handle_el1h_irq+0x70
> pc = 0xffff00000064d6e0 lr = 0xffff000000615130
> sp = 0xffff0000698f4e90 fp = 0xffff0000698f4fa0
>
> handle_el1h_irq() at ns8250_putc+0x2c
> pc = 0xffff000000615130 lr = 0xffff00000019a570
> sp = 0xffff0000698f4fb0 fp = 0xffff0000698f5050
>
> ns8250_putc() at ns8250_putc+0x2c
> pc = 0xffff00000019a570 lr = 0xffff00000019a570
> sp = 0xffff0000698f5060 fp = 0xffff0000698f5080
>
> ns8250_putc() at uart_cnputc+0x94
> pc = 0xffff00000019a570 lr = 0xffff0000001a0860
> sp = 0xffff0000698f5090 fp = 0xffff0000698f50c0
>
> uart_cnputc() at cnputc+0x90
> pc = 0xffff0000001a0860 lr = 0xffff0000002cb3a8
> sp = 0xffff0000698f50d0 fp = 0xffff0000698f5120
>
> cnputc() at cnputs+0xb4
> pc = 0xffff0000002cb3a8 lr = 0xffff0000002cb7c8
> sp = 0xffff0000698f5130 fp = 0xffff0000698f5150
>
> cnputs() at putchar+0x158
> pc = 0xffff0000002cb7c8 lr = 0xffff00000036f04c
> sp = 0xffff0000698f5160 fp = 0xffff0000698f51e0
>
> putchar() at kvprintf+0xda8
> pc = 0xffff00000036f04c lr = 0xffff00000036ec70
> sp = 0xffff0000698f51f0 fp = 0xffff0000698f5300
>
> kvprintf() at vprintf+0x7c
> pc = 0xffff00000036ec70 lr = 0xffff00000036f838
> sp = 0xffff0000698f5310 fp = 0xffff0000698f5420
>
> vprintf() at printf+0x48
> pc = 0xffff00000036f838 lr = 0xffff00000036f7ac
> sp = 0xffff0000698f5430 fp = 0xffff0000698f54b0
>
> printf() at print_registers+0x4c
> pc = 0xffff00000036f7ac lr = 0xffff00000062966c
> sp = 0xffff0000698f54c0 fp = 0xffff0000698f54f0
>
> print_registers() at data_abort+0x1f0
> pc = 0xffff00000062966c lr = 0xffff0000006298bc
> sp = 0xffff0000698f5500 fp = 0xffff0000698f55b0
>
> data_abort() at do_el1h_sync+0xfc
> pc = 0xffff0000006298bc lr = 0xffff0000006295d8
> sp = 0xffff0000698f55c0 fp = 0xffff0000698f55f0
>
> do_el1h_sync() at handle_el1h_sync+0x74
> pc = 0xffff0000006295d8 lr = 0xffff000000615074
> sp = 0xffff0000698f5600 fp = 0xffff0000698f5710
>
> handle_el1h_sync() at sched_switch+0x54c
> pc = 0xffff000000615074 lr = 0xffff000000351dd4
> sp = 0xffff0000698f5720 fp = 0xffff0000698f5800
>
> sched_switch() at mi_switch+0x118
> pc = 0xffff000000351dd4 lr = 0xffff000000330c14
> sp = 0xffff0000698f5810 fp = 0xffff0000698f5830
>
> mi_switch() at taskqgroup_binder+0x74
> pc = 0xffff000000330c14 lr = 0xffff000000367864
> sp = 0xffff0000698f5840 fp = 0xffff0000698f5860
>
> taskqgroup_binder() at gtaskqueue_run_locked+0x160
> pc = 0xffff000000367864 lr = 0xffff000000367710
> sp = 0xffff0000698f5870 fp = 0xffff0000698f58e0
>
> gtaskqueue_run_locked() at gtaskqueue_thread_loop+0xcc
> pc = 0xffff000000367710 lr = 0xffff0000003672c8
> sp = 0xffff0000698f58f0 fp = 0xffff0000698f5910
>
> gtaskqueue_thread_loop() at fork_exit+0x94
> pc = 0xffff0000003672c8 lr = 0xffff0000002eab20
> sp = 0xffff0000698f5920 fp = 0xffff0000698f5950
>
> fork_exit() at fork_trampoline+0x10
> pc = 0xffff0000002eab20 lr = 0xffff00000062934c
> sp = 0xffff0000698f5960 fp = 0x0000000000000000
>
>
> Booting with a debug kernel worked fine. (This matches up
> with past reports about "recent" pine64+ handling.)
>
> But trying to have the root file system on a USB SSD
> drive failed to see the USB drive at all. (This matches
> up with past reports about "recent" pine64+ handling.)
>
>
> From a separate non-debug kernel boot attempt:
> (remember the "thread_lock_flags_+0x298: ldr w4, [x3, #156]"
> but also note x8 in addition to x3)
>
> db> show reg
> spsr 0x96000004000003c5
> x0 0xffff00000069b000 $d.2+0x1ac
> x1 0x2
> x2 0xffff00000069ba48 $d.5+0x1d
> x3 0xdeadc0d8 <<<<<<<<< Note the "0xdeadc0d8"
> x4 0x3
> x5 0xffff000000610cf0 generic_bs_barrier
> x6 0
> x7 0x40 $d.14
> x8 0xdeadc0de <<<<<<<<< Note the "0xdeadc0de"
> x9 0
> x10 0x975c860b
> x11 0x975c860b
> x12 0x51eb850
> x13 0x4
> x14 0x66 $d.9+0x26
> x15 0xffff0000007004ce hex2ascii_data
> x16 0
> x17 0
> x18 0xffff00006990ec10
> x19 0xfffffd000103a000
> x20 0xffff000000bcee70 blocked_lock+0x18
> x21 0xffff00000080e5a8 sdt_lockstat___spin__release
> x22 0x3938700
> x23 0xfffffd000103a000
> x24 0xffff000000bcee58 blocked_lock
> x25 0x4
> x26 0x98967f
> x27 0xffff0000009ef000 next_to_notify
> x28 0xffff000000bb9000 proc0+0x4f8
> x29 0xffff00006990ec80
> lr 0xffff000000309064 thread_lock_flags_+0x1ac
> elr 0xffff000000309154 thread_lock_flags_+0x29c
> sp 0xffff00006990ec10
> thread_lock_flags_+0x298: ldr w4, [x3, #156]
> db> bt
> Tracing pid 0 tid 100057 td 0xfffffd000103a000
> db_trace_self() at db_stack_trace+0xec
> pc = 0xffff000000613688 lr = 0xffff000000084db4
> sp = 0xffff00006990e260 fp = 0xffff00006990e290
>
> db_stack_trace() at db_command+0x224
> pc = 0xffff000000084db4 lr = 0xffff000000084a3c
> sp = 0xffff00006990e2a0 fp = 0xffff00006990e380
>
> db_command() at db_command_loop+0x60
> pc = 0xffff000000084a3c lr = 0xffff0000000847fc
> sp = 0xffff00006990e390 fp = 0xffff00006990e3b0
>
> db_command_loop() at db_trap+0xf4
> pc = 0xffff0000000847fc lr = 0xffff000000087964
> sp = 0xffff00006990e3c0 fp = 0xffff00006990e5e0
>
> db_trap() at kdb_trap+0x180
> pc = 0xffff000000087964 lr = 0xffff0000003693e0
> sp = 0xffff00006990e5f0 fp = 0xffff00006990e650
>
> kdb_trap() at do_el1h_sync+0x90
> pc = 0xffff0000003693e0 lr = 0xffff00000062956c
> sp = 0xffff00006990e660 fp = 0xffff00006990e690
>
> do_el1h_sync() at handle_el1h_sync+0x74
> pc = 0xffff00000062956c lr = 0xffff000000615074
> sp = 0xffff00006990e6a0 fp = 0xffff00006990e7b0
>
> handle_el1h_sync() at kdb_enter+0x38
> pc = 0xffff000000615074 lr = 0xffff000000368ac8
> sp = 0xffff00006990e7c0 fp = 0xffff00006990e850
>
> kdb_enter() at vpanic+0x180
> pc = 0xffff000000368ac8 lr = 0xffff000000326dd8
> sp = 0xffff00006990e860 fp = 0xffff00006990e8d0
>
> vpanic() at panic+0x48
> pc = 0xffff000000326dd8 lr = 0xffff000000326c54
> sp = 0xffff00006990e8e0 fp = 0xffff00006990e960
>
> panic() at data_abort+0x21c
> pc = 0xffff000000326c54 lr = 0xffff0000006298e8
> sp = 0xffff00006990e970 fp = 0xffff00006990ea20
>
> data_abort() at do_el1h_sync+0xfc
> pc = 0xffff0000006298e8 lr = 0xffff0000006295d8
> sp = 0xffff00006990ea30 fp = 0xffff00006990ea60
>
> do_el1h_sync() at handle_el1h_sync+0x74
> pc = 0xffff0000006295d8 lr = 0xffff000000615074
> sp = 0xffff00006990ea70 fp = 0xffff00006990eb80
>
> handle_el1h_sync() at thread_lock_flags_+0x1a8
> pc = 0xffff000000615074 lr = 0xffff000000309060
> sp = 0xffff00006990eb90 fp = 0xffff00006990ec80
>
> thread_lock_flags_() at statclock_cnt+0x11c
> pc = 0xffff000000309060 lr = 0xffff0000002c5b90
> sp = 0xffff00006990ec90 fp = 0xffff00006990ecb0
>
> statclock_cnt() at handleevents+0x108
> pc = 0xffff0000002c5b90 lr = 0xffff00000064ad84
> sp = 0xffff00006990ecc0 fp = 0xffff00006990ed00
>
> handleevents() at timercb+0xe0
> pc = 0xffff00000064ad84 lr = 0xffff00000064b51c
> sp = 0xffff00006990ed10 fp = 0xffff00006990ed80
>
> timercb() at arm_tmr_intr+0x58
> pc = 0xffff00000064b51c lr = 0xffff000000600e5c
> sp = 0xffff00006990ed90 fp = 0xffff00006990ed90
>
> arm_tmr_intr() at intr_event_handle+0x64
> pc = 0xffff000000600e5c lr = 0xffff0000002edd50
> sp = 0xffff00006990eda0 fp = 0xffff00006990edd0
>
> intr_event_handle() at intr_isrc_dispatch+0x30
> pc = 0xffff0000002edd50 lr = 0xffff00000064d8ec
> sp = 0xffff00006990ede0 fp = 0xffff00006990edf0
>
> intr_isrc_dispatch() at arm_gic_intr+0xf0
> pc = 0xffff00000064d8ec lr = 0xffff000000601848
> sp = 0xffff00006990ee00 fp = 0xffff00006990ee50
>
> arm_gic_intr() at intr_irq_handler+0x60
> pc = 0xffff000000601848 lr = 0xffff00000064d6e0
> sp = 0xffff00006990ee60 fp = 0xffff00006990ee80
>
> intr_irq_handler() at handle_el1h_irq+0x70
> pc = 0xffff00000064d6e0 lr = 0xffff000000615130
> sp = 0xffff00006990ee90 fp = 0xffff00006990efa0
>
> handle_el1h_irq() at ns8250_putc+0x2c
> pc = 0xffff000000615130 lr = 0xffff00000019a570
> sp = 0xffff00006990efb0 fp = 0xffff00006990f050
>
> ns8250_putc() at ns8250_putc+0x2c
> pc = 0xffff00000019a570 lr = 0xffff00000019a570
> sp = 0xffff00006990f060 fp = 0xffff00006990f080
>
> ns8250_putc() at uart_cnputc+0x94
> pc = 0xffff00000019a570 lr = 0xffff0000001a0860
> sp = 0xffff00006990f090 fp = 0xffff00006990f0c0
>
> uart_cnputc() at cnputc+0x90
> pc = 0xffff0000001a0860 lr = 0xffff0000002cb3a8
> sp = 0xffff00006990f0d0 fp = 0xffff00006990f120
>
> cnputc() at cnputs+0xb4
> pc = 0xffff0000002cb3a8 lr = 0xffff0000002cb7c8
> sp = 0xffff00006990f130 fp = 0xffff00006990f150
>
> cnputs() at putchar+0x158
> pc = 0xffff0000002cb7c8 lr = 0xffff00000036f04c
> sp = 0xffff00006990f160 fp = 0xffff00006990f1e0
>
> putchar() at kvprintf+0xda8
> pc = 0xffff00000036f04c lr = 0xffff00000036ec70
> sp = 0xffff00006990f1f0 fp = 0xffff00006990f300
>
> kvprintf() at vprintf+0x7c
> pc = 0xffff00000036ec70 lr = 0xffff00000036f838
> sp = 0xffff00006990f310 fp = 0xffff00006990f420
>
> vprintf() at printf+0x48
> pc = 0xffff00000036f838 lr = 0xffff00000036f7ac
> sp = 0xffff00006990f430 fp = 0xffff00006990f4b0
>
> printf() at print_registers+0x4c
> pc = 0xffff00000036f7ac lr = 0xffff00000062966c
> sp = 0xffff00006990f4c0 fp = 0xffff00006990f4f0
>
> print_registers() at data_abort+0x1f0
> pc = 0xffff00000062966c lr = 0xffff0000006298bc
> sp = 0xffff00006990f500 fp = 0xffff00006990f5b0
>
> data_abort() at do_el1h_sync+0xfc
> pc = 0xffff0000006298bc lr = 0xffff0000006295d8
> sp = 0xffff00006990f5c0 fp = 0xffff00006990f5f0
>
> do_el1h_sync() at handle_el1h_sync+0x74
> pc = 0xffff0000006295d8 lr = 0xffff000000615074
> sp = 0xffff00006990f600 fp = 0xffff00006990f710
>
> handle_el1h_sync() at sched_switch+0x54c
> pc = 0xffff000000615074 lr = 0xffff000000351dd4
> sp = 0xffff00006990f720 fp = 0xffff00006990f800
>
> sched_switch() at mi_switch+0x118
> pc = 0xffff000000351dd4 lr = 0xffff000000330c14
> sp = 0xffff00006990f810 fp = 0xffff00006990f830
>
> mi_switch() at taskqgroup_binder+0x74
> pc = 0xffff000000330c14 lr = 0xffff000000367864
> sp = 0xffff00006990f840 fp = 0xffff00006990f860
>
> taskqgroup_binder() at gtaskqueue_run_locked+0x160
> pc = 0xffff000000367864 lr = 0xffff000000367710
> sp = 0xffff00006990f870 fp = 0xffff00006990f8e0
>
> gtaskqueue_run_locked() at gtaskqueue_thread_loop+0xcc
> pc = 0xffff000000367710 lr = 0xffff0000003672c8
> sp = 0xffff00006990f8f0 fp = 0xffff00006990f910
>
> gtaskqueue_thread_loop() at fork_exit+0x94
> pc = 0xffff0000003672c8 lr = 0xffff0000002eab20
> sp = 0xffff00006990f920 fp = 0xffff00006990f950
>
> fork_exit() at fork_trampoline+0x10
> pc = 0xffff0000002eab20 lr = 0xffff00000062934c
> sp = 0xffff00006990f960 fp = 0x0000000000000000
[Another issue was modern boot1.efi (as bootaa64.efi)
not working and so I'm using an old one (2016-Nov-7)
that I found that allows getting this far.]
A boot attempt with a older boot1.efi that works and a
debug kernel got:
. . .
Release APs
APs not started
CPU 0: ARM Cortex-A53 r0p4 affinity: 0
Instruction Set Attributes 0 = <AES+PMULL,SHA1,SHA2,CRC32>
Instruction Set Attributes 1 = <0>
Processor Features 0 = <AdvSIMD,Float,EL3 32,EL2 32,EL1 32,EL0 32>
Processor Features 1 = <0>
Memory Model Features 0 = <4k Granule,64k Granule,MixedEndian,S/NS Mem,16bit ASID,1TB PA>
Memory Model Features 1 = <>
Debug Features 0 = <2 CTX Breakpoints,4 Watchpoints,6 Breakpoints,PMUv3,Debug v8>
Debug Features 1 = <0>
Auxiliary Features 0 = <0>
Auxiliary Features 1 = <0>
CPU 1: (null) (null) r0p0 affinity: 0
CPU 2: (null) (null) r0p0 affinity: 0
CPU 3: (null) (null) r0p0 affinity: 0
panic: acquiring blockable sleep lock with spinlock or critical section held (sleep mutex) pmap @ /usr/src/sys/arm64/arm64/pmap.c:4710
cpuid = 0
time = 13
KDB: stack backtrace:
db_trace_self() at db_trace_self_wrapper+0x28
pc = 0xffff0000005efc78 lr = 0xffff000000088094
sp = 0xffff000069850080 fp = 0xffff000069850290
db_trace_self_wrapper() at vpanic+0x164
pc = 0xffff000000088094 lr = 0xffff00000031764c
sp = 0xffff0000698502a0 fp = 0xffff000069850310
vpanic() at kassert_panic+0x15c
pc = 0xffff00000031764c lr = 0xffff0000003174e4
sp = 0xffff000069850320 fp = 0xffff0000698503e0
kassert_panic() at witness_checkorder+0x160
pc = 0xffff0000003174e4 lr = 0xffff000000374990
sp = 0xffff0000698503f0 fp = 0xffff000069850470
witness_checkorder() at __mtx_lock_flags+0xa8
pc = 0xffff000000374990 lr = 0xffff0000002f8b7c
sp = 0xffff000069850480 fp = 0xffff0000698504b0
__mtx_lock_flags() at pmap_fault+0x40
pc = 0xffff0000002f8b7c lr = 0xffff000000606994
sp = 0xffff0000698504c0 fp = 0xffff0000698504e0
pmap_fault() at data_abort+0xb8
pc = 0xffff000000606994 lr = 0xffff000000608a9c
sp = 0xffff0000698504f0 fp = 0xffff0000698505a0
data_abort() at do_el1h_sync+0xfc
pc = 0xffff000000608a9c lr = 0xffff0000006088f0
sp = 0xffff0000698505b0 fp = 0xffff0000698505e0
do_el1h_sync() at handle_el1h_sync+0x74
pc = 0xffff0000006088f0 lr = 0xffff0000005f1874
sp = 0xffff0000698505f0 fp = 0xffff000069850700
handle_el1h_sync() at sched_switch+0x2a8
pc = 0xffff0000005f1874 lr = 0xffff00000033f0c8
sp = 0xffff000069850710 fp = 0xffff0000698507f0
sched_switch() at mi_switch+0x1b8
pc = 0xffff00000033f0c8 lr = 0xffff00000032161c
sp = 0xffff000069850800 fp = 0xffff000069850820
mi_switch() at taskqgroup_binder+0x7c
pc = 0xffff00000032161c lr = 0xffff00000035510c
sp = 0xffff000069850830 fp = 0xffff000069850860
taskqgroup_binder() at gtaskqueue_run_locked+0x104
pc = 0xffff00000035510c lr = 0xffff000000354f74
sp = 0xffff000069850870 fp = 0xffff0000698508e0
gtaskqueue_run_locked() at gtaskqueue_thread_loop+0x9c
pc = 0xffff000000354f74 lr = 0xffff000000354d10
sp = 0xffff0000698508f0 fp = 0xffff000069850910
gtaskqueue_thread_loop() at fork_exit+0x7c
pc = 0xffff000000354d10 lr = 0xffff0000002dbd3c
sp = 0xffff000069850920 fp = 0xffff000069850950
fork_exit() at fork_trampoline+0x10
pc = 0xffff0000002dbd3c lr = 0xffff000000608664
sp = 0xffff000069850960 fp = 0x0000000000000000
KDB: enter: panic
[ thread pid 0 tid 100058 ]
Stopped at sched_switch+0x2b8: ldrb w9, [x8, #894]
db>
Unfortunately it was not taking console input so that is
all I got.
===
Mark Millard
markmi at dsl-only.net
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