Another "invalid ASID" panic on an rpi3 running r354796

[bob prohaska]

Not sure this is useful, but another panic was provoked by first
starting www/chromium and then starting stress2/misc/all.sh.....


20191118 19:59:45 all (1/526): mmap21.sh
panic: invalid ASID
cpuid = 3
time = 1574136018
KDB: stack backtrace:
db_trace_self() at db_trace_self_wrapper+0x28
	 pc = 0xffff00000072947c  lr = 0xffff0000001064f0
	 sp = 0xffff00005191d0f0  fp = 0xffff00005191d300

db_trace_self_wrapper() at vpanic+0x18c
	 pc = 0xffff0000001064f0  lr = 0xffff000000400b5c
	 sp = 0xffff00005191d310  fp = 0xffff00005191d3c0

vpanic() at panic+0x44
	 pc = 0xffff000000400b5c  lr = 0xffff00000040090c
	 sp = 0xffff00005191d3d0  fp = 0xffff00005191d450

panic() at pmap_ts_referenced+0x820
	 pc = 0xffff00000040090c  lr = 0xffff000000741714
	 sp = 0xffff00005191d460  fp = 0xffff00005191d4f0

pmap_ts_referenced() at vm_pageout_worker+0xe2c
	 pc = 0xffff000000741714  lr = 0xffff0000006e46d4
	 sp = 0xffff00005191d500  fp = 0xffff00005191d8d0

vm_pageout_worker() at vm_pageout+0x1b0
	 pc = 0xffff0000006e46d4  lr = 0xffff0000006e3894
	 sp = 0xffff00005191d8e0  fp = 0xffff00005191d940

vm_pageout() at fork_exit+0x7c
	 pc = 0xffff0000006e3894  lr = 0xffff0000003c0eb0
	 sp = 0xffff00005191d950  fp = 0xffff00005191d980

fork_exit() at fork_trampoline+0x10
	 pc = 0xffff0000003c0eb0  lr = 0xffff0000007458bc
	 sp = 0xffff00005191d990  fp = 0x0000000000000000

KDB: enter: panic
[ thread pid 21 tid 100066 ]
Stopped at      0
db> bt
Tracing pid 21 tid 100066 td 0xfffffd0000d7f560
db_trace_self() at db_stack_trace+0xf8
         pc = 0xffff00000072947c  lr = 0xffff000000103934
         sp = 0xffff00005191ccc0  fp = 0xffff00005191ccf0

db_stack_trace() at db_command+0x228
         pc = 0xffff000000103934  lr = 0xffff0000001035ac
         sp = 0xffff00005191cd00  fp = 0xffff00005191cde0

db_command() at db_command_loop+0x58
         pc = 0xffff0000001035ac  lr = 0xffff000000103354
         sp = 0xffff00005191cdf0  fp = 0xffff00005191ce10

db_command_loop() at db_trap+0xf4
         pc = 0xffff000000103354  lr = 0xffff000000106658
         sp = 0xffff00005191ce20  fp = 0xffff00005191d040

db_trap() at kdb_trap+0x1d8
         pc = 0xffff000000106658  lr = 0xffff0000004490f4
         sp = 0xffff00005191d050  fp = 0xffff00005191d100
        
kdb_trap() at do_el1h_sync+0xf4
         pc = 0xffff0000004490f4  lr = 0xffff000000745b30
         sp = 0xffff00005191d110  fp = 0xffff00005191d140

do_el1h_sync() at handle_el1h_sync+0x78
         pc = 0xffff000000745b30  lr = 0xffff00000072b878
         sp = 0xffff00005191d150  fp = 0xffff00005191d260

handle_el1h_sync() at kdb_enter+0x34
         pc = 0xffff00000072b878  lr = 0xffff000000448740
         sp = 0xffff00005191d270  fp = 0xffff00005191d300

kdb_enter() at vpanic+0x1a8
         pc = 0xffff000000448740  lr = 0xffff000000400b78
         sp = 0xffff00005191d310  fp = 0xffff00005191d3c0

vpanic() at panic+0x44
         pc = 0xffff000000400b78  lr = 0xffff00000040090c
         sp = 0xffff00005191d3d0  fp = 0xffff00005191d450
        
panic() at pmap_ts_referenced+0x820
         pc = 0xffff00000040090c  lr = 0xffff000000741714
         sp = 0xffff00005191d460  fp = 0xffff00005191d4f0

pmap_ts_referenced() at vm_pageout_worker+0xe2c
         pc = 0xffff000000741714  lr = 0xffff0000006e46d4
         sp = 0xffff00005191d500  fp = 0xffff00005191d8d0

vm_pageout_worker() at vm_pageout+0x1b0
         pc = 0xffff0000006e46d4  lr = 0xffff0000006e3894
         sp = 0xffff00005191d8e0  fp = 0xffff00005191d940

vm_pageout() at fork_exit+0x7c
         pc = 0xffff0000006e3894  lr = 0xffff0000003c0eb0
         sp = 0xffff00005191d950  fp = 0xffff00005191d980

fork_exit() at fork_trampoline+0x10
         pc = 0xffff0000003c0eb0  lr = 0xffff0000007458bc
         sp = 0xffff00005191d990  fp = 0x0000000000000000
        
db> 

www/chromium ran for over an hour with no panic.  Starting 
stress2/misc/all.sh resulted in a panic in tens of seconds.

Thanks for reading,

bob prohaska