dtrace kernel panic - bbb-july-18-2017

root@beaglebone:~ # dtrace -x stackframes=100 -n 'profile-99 /arg0/ { @[stack()] = count(); }'
dtrace: description 'profile-99 ' matched 1 probe
panic: acquiring blockable sleep lock with spinlock or critical section held (sx) kernel linker @ /usr/src/sys/kern/kern_linker.c:563
time = 1500420767
KDB: stack backtrace:
$a.4() at $a.4
         pc = 0xc06a8374  lr = 0xc0257c50 (db_trace_self_wrapper+0x30)
         sp = 0xde0cc4c8  fp = 0xde0cc5e0
db_trace_self_wrapper() at db_trace_self_wrapper+0x30
         pc = 0xc0257c50  lr = 0xc03d2c4c (vpanic+0xd4)
         sp = 0xde0cc5e8  fp = 0xde0cc608
         r4 = 0x00000100  r5 = 0xde0cc62c
         r6 = 0xc072edea  r7 = 0x00000001
vpanic() at vpanic+0xd4
         pc = 0xc03d2c4c  lr = 0xc03d2b64 ($d.10)
         sp = 0xde0cc610  fp = 0xde0cc624
         r4 = 0xc072edea  r5 = 0xde0cc62c
         r6 = 0xc03ab3b4  r7 = 0xc0728b42
         r8 = 0x00000233  r9 = 0xc0728b3f
        r10 = 0xc31f0740
$d.10() at $d.10
         pc = 0xc03d2b64  lr = 0xc0434bd4 (witness_checkorder+0x17c)
         sp = 0xde0cc638  fp = 0xde0cc680
         r4 = 0xc0727287  r5 = 0x00000009
         r6 = 0xc03ab3b4 r10 = 0xc31f0740
witness_checkorder() at witness_checkorder+0x17c
         pc = 0xc0434bd4  lr = 0xc03db6ac (_sx_xlock+0x8c)
         sp = 0xde0cc688  fp = 0xde0cc6a8
         r4 = 0xde0cc6c8  r5 = 0xc0728b3f
         r6 = 0xc092ffc8  r7 = 0xc092ffb8
         r8 = 0x00000000  r9 = 0x00000233
        r10 = 0x00000018
_sx_xlock() at _sx_xlock+0x8c
         pc = 0xc03db6ac  lr = 0xc03a97c4 (linker_file_foreach+0x2c)
         sp = 0xde0cc6b0  fp = 0xde0cc6c0
         r4 = 0xde0cc6c8  r5 = 0xc06c799c
         r6 = 0x00000000  r7 = 0xc327f834
         r8 = 0xc07d748c  r9 = 0xc06b8828
linker_file_foreach() at linker_file_foreach+0x2c
         pc = 0xc03a97c4  lr = 0xc06c7594 (unwind_stack_one+0x54)
         sp = 0xde0cc6c8  fp = 0xde0cc6f0
         r4 = 0xde0cc864  r5 = 0xde0cc6c8
         r6 = 0x00000000  r7 = 0xc327f834
unwind_stack_one() at unwind_stack_one+0x54
         pc = 0xc06c7594  lr = 0xc327bb08 ($a.64+0x208)
         sp = 0xde0cc6f8  fp = 0xde0cc8d8
         r4 = 0x00000001  r5 = 0xc3a58018
         r6 = 0x00000064  r7 = 0x00000004
         r8 = 0x00000000  r9 = 0xc06b8828
        r10 = 0x00000018
$a.64() at $a.64+0x208
         pc = 0xc327bb08  lr = 0xc39e4a44 (profile_fire+0x94)
         sp = 0xde0cc8e0  fp = 0xde0cc918
         r4 = 0xc3a41c00  r5 = 0x00000000
         r6 = 0xc3a41d00  r7 = 0xc09ab44c
         r8 = 0x00000000  r9 = 0x00000002
        r10 = 0xc09ab48c
profile_fire() at profile_fire+0x94
         pc = 0xc39e4a44  lr = 0xc03ec56c (softclock_call_cc+0x168)
         sp = 0xde0cc920  fp = 0xde0cc980
         r4 = 0x00000114  r5 = 0xc3a41c18
         r6 = 0xc09ab494 r10 = 0xc09ab48c
softclock_call_cc() at softclock_call_cc+0x168
         pc = 0xc03ec56c  lr = 0xc03ec260 (callout_process+0x1f0)
         sp = 0xde0cc988  fp = 0xde0cc9d8
         r4 = 0xc09ab440  r5 = 0x00000712
         r6 = 0x3771c539  r7 = 0x00000712
         r8 = 0x00000000  r9 = 0xc09ab404
        r10 = 0x00071237
callout_process() at callout_process+0x1f0
         pc = 0xc03ec260  lr = 0xc06de684 (handleevents+0x250)
         sp = 0xde0cc9e0  fp = 0xde0cca10
         r4 = 0xc0c05cb8  r5 = 0x00000712
         r6 = 0x3771c539  r7 = 0xc2b5f9c0
         r8 = 0xc0c05cc0  r9 = 0xc0c05c80
        r10 = 0xc09a7ef8
handleevents() at handleevents+0x250
         pc = 0xc06de684  lr = 0xc06dede8 (timercb+0x9c)
         sp = 0xde0cca18  fp = 0xde0cca38
         r4 = 0xc09a7f00  r5 = 0xc0c05c80
         r6 = 0x00000000  r7 = 0xc2b5f9c0
         r8 = 0xde0ccac0  r9 = 0xc31f0740
        r10 = 0xc2ca7900
timercb() at timercb+0x9c
         pc = 0xc06dede8  lr = 0xc06cc554 (am335x_dmtimer_et_intr+0x44)
         sp = 0xde0cca40  fp = 0xde0cca48
         r4 = 0xc2d12380  r5 = 0xde0ccac0
         r6 = 0x00000044 r10 = 0xc2ca7900
am335x_dmtimer_et_intr() at am335x_dmtimer_et_intr+0x44
         pc = 0xc06cc554  lr = 0xc039b9f4 (intr_event_handle+0x70)
         sp = 0xde0cca50  fp = 0xde0cca70
         r4 = 0x00000000 r10 = 0xc2ca7900
intr_event_handle() at intr_event_handle+0x70
         pc = 0xc039b9f4  lr = 0xc06ad0f0 (intr_isrc_dispatch+0x68)
         sp = 0xde0cca78  fp = 0xde0cca80
         r4 = 0xc2d82efc  r5 = 0xde0ccac0
         r6 = 0x00000044  r7 = 0x00000000
         r8 = 0xc0822180  r9 = 0x00000000
        r10 = 0x00000001
intr_isrc_dispatch() at intr_isrc_dispatch+0x68
         pc = 0xc06ad0f0  lr = 0xc06cbf94 (ti_aintc_intr+0xa0)
         sp = 0xde0cca88  fp = 0xde0cca98
         r4 = 0xc2d82000  r5 = 0x00000044
ti_aintc_intr() at ti_aintc_intr+0xa0
         pc = 0xc06cbf94  lr = 0xc06acf50 (intr_irq_handler+0x84)
         sp = 0xde0ccaa0  fp = 0xde0ccab8
         r4 = 0xde0ccac0  r5 = 0xc09a3214
         r6 = 0xc31f0740 r10 = 0x00000001
intr_irq_handler() at intr_irq_handler+0x84
         pc = 0xc06acf50  lr = 0xc06ab034 (exception_exit)
         sp = 0xde0ccac0  fp = 0xde0ccbc8
         r4 = 0xc181b000  r5 = 0x2155e000
         r6 = 0x8d85e000  r7 = 0xc2cd1294
         r8 = 0x00000000 r10 = 0x00000001
exception_exit() at exception_exit
         pc = 0xc06ab034  lr = 0xc06b86e0 (get_pv_entry+0x50)
         sp = 0xde0ccb50  fp = 0xde0ccbc8
         r0 = 0x00000000  r1 = 0x000cc5ac
         r2 = 0xc07492ac  r3 = 0x00000bc9
         r4 = 0xc181b000  r5 = 0x2155e000
         r6 = 0x8d85e000  r7 = 0xc2cd1294
         r8 = 0x00000000  r9 = 0x00000000
        r10 = 0x00000001 r12 = 0xc09a7b90
get_pv_entry() at get_pv_entry+0x198
         pc = 0xc06b8828  lr = 0xc06b7734 (pmap_enter+0x450)
         sp = 0xde0ccbd0  fp = 0xde0ccc38
         r4 = 0x00000000  r5 = 0x2155e000
         r6 = 0x8d85e000  r7 = 0xc1117220
         r8 = 0x00000000  r9 = 0x00000000
        r10 = 0xc2cd1294
pmap_enter() at pmap_enter+0x450
         pc = 0xc06b7734  lr = 0xc0677b2c ($a.6+0xbc4)
         sp = 0xde0ccc40  fp = 0xde0ccd40
         r4 = 0x2155e000  r5 = 0xc0822180
         r6 = 0xc09af010  r7 = 0x00000000
         r8 = 0x00000000  r9 = 0x00000002
        r10 = 0xde0cccf8
$a.6() at $a.6+0xbc4
         pc = 0xc0677b2c  lr = 0xc0675f94 (vm_fault+0x88)
         sp = 0xde0ccd48  fp = 0xde0ccd68
         r4 = 0xc2cd11e0  r5 = 0x00000002
         r6 = 0xc31f0740  r7 = 0x2155e000
         r8 = 0x00000000  r9 = 0x00000002
        r10 = 0xc09aee74
vm_fault() at vm_fault+0x88
         pc = 0xc0675f94  lr = 0xc06c66ec (abort_handler+0x364)
         sp = 0xde0ccd70  fp = 0xde0cce00
         r4 = 0xde0cce98  r5 = 0x00000007
         r6 = 0x00000000  r7 = 0x00000807
         r8 = 0x00000010  r9 = 0xc31f0740
        r10 = 0xde0cce08
abort_handler() at abort_handler+0x364
         pc = 0xc06c66ec  lr = 0xc06ab034 (exception_exit)
         sp = 0xde0cce08  fp = 0xbfbfe988
         r4 = 0x00000010  r5 = 0x203c6380
         r6 = 0x203dd380  r7 = 0x00000010
         r8 = 0x201d6008  r9 = 0x00000000
        r10 = 0x201d6008
exception_exit() at exception_exit
         pc = 0xc06ab034  lr = 0x2036dc48 (0x2036dc48)
         sp = 0xde0cce98  fp = 0xbfbfe988
         r0 = 0x214f6000  r1 = 0x00197f80
         r2 = 0xa5a5a5a5  r3 = 0xa5a5a5a5
         r4 = 0x00000010  r5 = 0x203c6380
         r6 = 0x203dd380  r7 = 0x00000010
         r8 = 0x201d6008  r9 = 0x00000000
        r10 = 0x201d6008 r12 = 0x2155e000
Unable to unwind into user mode
KDB: enter: panic
[ thread pid 699 tid 100079 ]
Stopped at      $d.8:   ldrb    r15, [r15, r15, ror r15]!
db>
db>