Date: Tue, 26 Apr 2016 11:30:30 -0700 From: bob prohaska <fbsd@www.zefox.net> To: freebsd-arm@freebsd.org Subject: Another reboot hang Message-ID: <20160426183030.GN71221@www.zefox.net>
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Recently I've been observing hangs on reboot for RPI2.
Here's an example from r298542. It had just finished building 298591.
The previous two or three reboots were successful, prior to those
hangs were observed several times. All attempts to reboot via ssh
have been successful.
Here's the backtrace:
root@www:/usr/src # shutdown -r now
Shutdown NOW!
shutdown: [pid 28505]
root@www:/usr/src #
*** FINAL System shutdown message from root@www.zefox.com ***
System going down IMMEDIATELY
System shutdown time has arrived
Apr 26 11:15:56 www shutdown: reboot by root:
Stopping cron.
Waiting for PIDS: 620.
Stopping sshd.
Waiting for PIDS: 601.
Stopping powerd.
Waiting for PIDS: 562.
Stopping casperd.
Waiting for PIDS: 507.
Stopping devd.
Waiting for PIDS: 335.
Writing entropy file:.
.
Terminated
Apr 26 11:16:06 www syslogd: exiting on signal 15
Waiting (max 60 seconds) for system process `vnlru' to stop...done
Waiting (max 60 seconds) for system process `bufdaemon' to stop...done
Waiting (max 60 seconds) for system process `syncer' to stop...
Syncing disks, vnodes remaining...2 3 0 0 0 done
All buffers synced.
KDB: enter: Break to debugger
[ thread pid 1 tid 100001 ]
Stopped at $d.8: ldrb r15, [r15, r15, ror r15]!
db> bt
Tracing pid 1 tid 100001 td 0xc3a5f000
db_trace_self() at db_trace_self
pc = 0xc05659f4 lr = 0xc0147a8c (db_stack_trace+0x108)
sp = 0xd75eb650 fp = 0xd75eb668
db_stack_trace() at db_stack_trace+0x108
pc = 0xc0147a8c lr = 0xc01476d0 (db_command+0x270)
sp = 0xd75eb670 fp = 0xd75eb710
r4 = 0x00000001 r5 = 0x00000000
r6 = 0xc05fdd21 r10 = 0xc07bc738
db_command() at db_command+0x270
pc = 0xc01476d0 lr = 0xc0147450 (db_command_loop+0x74)
sp = 0xd75eb718 fp = 0xd75eb728
r4 = 0xc05d4a0c r5 = 0xc05f64b7
r6 = 0xc07bc724 r7 = 0xd75eb8f8
r8 = 0xc07adfc0 r9 = 0xc06c3318
r10 = 0xc07adfc4
db_command_loop() at db_command_loop+0x74
pc = 0xc0147450 lr = 0xc014a14c (db_trap+0x120)
sp = 0xd75eb730 fp = 0xd75eb848
r4 = 0x00000001 r5 = 0x00000000
r6 = 0xc07bc730 r10 = 0xc07adfc4
db_trap() at db_trap+0x120
pc = 0xc014a14c lr = 0xc02fe450 (kdb_trap+0x180)
sp = 0xd75eb850 fp = 0xd75eb878
r4 = 0x00000000 r5 = 0x00000001
r6 = 0xc07adfe0 r10 = 0xc07adfc4
kdb_trap() at kdb_trap+0x180
pc = 0xc02fe450 lr = 0xc0583570 (undefinedinstruction+0x318)
sp = 0xd75eb880 fp = 0xd75eb8f0
r4 = 0x00000000 r5 = 0x00000000
r6 = 0xc05831a8 r7 = 0xe7ffffff
r8 = 0xc3a5f000 r9 = 0xc02fdd7c
r10 = 0xd75eb8f8
undefinedinstruction() at undefinedinstruction+0x318
pc = 0xc0583570 lr = 0xc05687fc (exception_exit)
sp = 0xd75eb8f8 fp = 0xd75eb998
r4 = 0x60000193 r5 = 0xc3b12088
r6 = 0x00000093 r7 = 0x00040000
r8 = 0x00000000 r9 = 0x00000000
r10 = 0xc06d2be8
exception_exit() at exception_exit
pc = 0xc05687fc lr = 0xc02fdd64 (kdb_alt_break_internal+0x1c4)
sp = 0xd75eb988 fp = 0xd75eb998
r0 = 0xc07adfd4 r1 = 0x00000000
r2 = 0x00000001 r3 = 0x60000193
r4 = 0xc3b12000 r5 = 0xc3b12088
r6 = 0x00000093 r7 = 0x00040000
r8 = 0x00000000 r9 = 0x00000000
r10 = 0xc06d2be8 r12 = 0x00000000
$a.9() at $a.9
pc = 0xc02fdd80 lr = 0xc02fdb98 (kdb_alt_break+0x10)
sp = 0xd75eb9a0 fp = 0xd75eb9a0
r4 = 0xc3b12000 r5 = 0xc3b12088
r6 = 0x00000093 r7 = 0x00040000
kdb_alt_break() at kdb_alt_break+0x10
pc = 0xc02fdb98 lr = 0xc01a089c (uart_intr_rxready+0x8c)
sp = 0xd75eb9a8 fp = 0xd75eb9b8
uart_intr_rxready() at uart_intr_rxready+0x8c
pc = 0xc01a089c lr = 0xc01a16bc (uart_intr+0x118)
sp = 0xd75eb9c0 fp = 0xd75eb9f8
r4 = 0xc3b37900 r5 = 0xc3b12000
r6 = 0xc3b12194 r10 = 0xc06d2be8
uart_intr() at uart_intr+0x118
pc = 0xc01a16bc lr = 0xc0289e6c (intr_event_handle+0x80)
sp = 0xd75eba00 fp = 0xd75eba20
r4 = 0xc3b37900 r5 = 0xd75ebaf8
r6 = 0xc3b2f058 r7 = 0xc3a5f000
r8 = 0x00000000 r9 = 0xc05effbb
r10 = 0xc3b26d80
intr_event_handle() at intr_event_handle+0x80
pc = 0xc0289e6c lr = 0xc056a350 (intr_isrc_dispatch+0x68)
sp = 0xd75eba28 fp = 0xd75eba30
r4 = 0xc3b2f058 r5 = 0xd75ebaf8
r6 = 0xc3b2f058 r7 = 0x00000041
r8 = 0xc062d2ab r9 = 0xc3b2e018
r10 = 0xbc1fffff
intr_isrc_dispatch() at intr_isrc_dispatch+0x68
pc = 0xc056a350 lr = 0xc0590c10 (bcm2835_intc_intr+0x8c)
sp = 0xd75eba38 fp = 0xd75eba58
r4 = 0xc3b2e000 r5 = 0x00000000
bcm2835_intc_intr() at bcm2835_intc_intr+0x8c
pc = 0xc0590c10 lr = 0xc0289e6c (intr_event_handle+0x80)
sp = 0xd75eba60 fp = 0xd75eba80
r4 = 0xc3936100 r5 = 0xd75ebaf8
r6 = 0x00000000 r7 = 0xc3a5f000
r8 = 0x00000000 r9 = 0xc05effbb
r10 = 0xc3b24340
intr_event_handle() at intr_event_handle+0x80
pc = 0xc0289e6c lr = 0xc056a350 (intr_isrc_dispatch+0x68)
sp = 0xd75eba88 fp = 0xd75eba90
r4 = 0xc3a3c604 r5 = 0xd75ebaf8
r6 = 0x00000000 r7 = 0x00000000
r8 = 0x00000100 r9 = 0xc3fdb2b0
r10 = 0xd75ebaf8
intr_isrc_dispatch() at intr_isrc_dispatch+0x68
pc = 0xc056a350 lr = 0xc0588cec (bcm_lintc_intr+0x230)
sp = 0xd75eba98 fp = 0xd75ebad8
r4 = 0xc3a3c400 r5 = 0x000000c0
bcm_lintc_intr() at bcm_lintc_intr+0x230
pc = 0xc0588cec lr = 0xc056a2c4 (intr_irq_handler+0x68)
sp = 0xd75ebae0 fp = 0xd75ebaf0
r4 = 0xd75ebaf8 r5 = 0xc07b7778
r6 = 0xc3a5f000 r7 = 0x00000000
r8 = 0x00000000 r9 = 0xc3fdb2b0
r10 = 0xd75ebbf0
intr_irq_handler() at intr_irq_handler+0x68
pc = 0xc056a2c4 lr = 0xc05687fc (exception_exit)
sp = 0xd75ebaf8 fp = 0xd75ebba8
r4 = 0xc0620546 r5 = 0x00000001
r6 = 0xc3fdb2c0 r7 = 0x00000608
exception_exit() at exception_exit
pc = 0xc05687fc lr = 0xc0515a44 (ffs_sync+0x104)
sp = 0xd75ebb88 fp = 0xd75ebba8
r0 = 0x00000004 r1 = 0xc3a5f000
r2 = 0xc3fdb2c0 r3 = 0xc3a5f000
r4 = 0xc0620546 r5 = 0x00000001
r6 = 0xc3fdb2c0 r7 = 0x00000608
r8 = 0x00000000 r9 = 0xc3fdb2b0
r10 = 0xd75ebbf0 r12 = 0xc061cf05
__mtx_lock_flags() at __mtx_lock_flags+0xb4
pc = 0xc02a4f60 lr = 0xc0515a44 (ffs_sync+0x104)
sp = 0xd75ebbb0 fp = 0xd75ebc20
r4 = 0xc3a5f000 r5 = 0xc3fdb2c0
r6 = 0x00000000 r7 = 0xc0620546
r8 = 0xc3fdb2b0 r9 = 0xc3a5f000
ffs_sync() at ffs_sync+0x104
pc = 0xc0515a44 lr = 0xc0380aa0 (vfs_write_suspend+0x19c)
sp = 0xd75ebc28 fp = 0xd75ebc58
r4 = 0xc3fdb2b0 r5 = 0xc3fdb2b0
r6 = 0x00000000 r7 = 0x00000002
r8 = 0x00000000 r9 = 0xc3fdb2c0
r10 = 0xc4351600
vfs_write_suspend() at vfs_write_suspend+0x19c
pc = 0xc0380aa0 lr = 0xc0380cd0 (vfs_write_suspend_umnt+0x40)
sp = 0xd75ebc60 fp = 0xd75ebc70
r4 = 0xc3fdb2b0 r5 = 0xc3fdb2b0
r6 = 0xc3a5f000 r7 = 0x00000002
r8 = 0x00000000 r9 = 0xc44fa000
r10 = 0xc4351600
vfs_write_suspend_umnt() at vfs_write_suspend_umnt+0x40
pc = 0xc0380cd0 lr = 0xc051533c (ffs_unmount+0x48)
sp = 0xd75ebc78 fp = 0xd75ebcb8
r4 = 0x00080000 r5 = 0xc3fdb2b0
r6 = 0xc3a5f000 r7 = 0x00000002
ffs_unmount() at ffs_unmount+0x48
pc = 0xc051533c lr = 0xc0368734 (dounmount+0x594)
sp = 0xd75ebcc0 fp = 0xd75ebd08
r4 = 0x00080000 r5 = 0x10201000
r6 = 0x00000000 r7 = 0x00000000
r8 = 0x00080000 r9 = 0xc4534360
r10 = 0xc3a5f000
dounmount() at dounmount+0x594
pc = 0xc0368734 lr = 0xc0371dc8 (vfs_unmountall+0x7c)
sp = 0xd75ebd10 fp = 0xd75ebd30
r4 = 0xc07bed0c r5 = 0x00000000
r6 = 0xc43a1ac0 r7 = 0xc3fdb2b0
r8 = 0xc06078f6 r9 = 0xc061a20b
r10 = 0xc06078df
vfs_unmountall() at vfs_unmountall+0x7c
pc = 0xc0371dc8 lr = 0xc0352a90 (bufshutdown+0x39c)
sp = 0xd75ebd38 fp = 0xd75ebd78
r4 = 0x00000000 r5 = 0xd76146b8
r6 = 0xd76146b8 r7 = 0x00000000
r8 = 0xc07b1cc8 r9 = 0xc060353c
r10 = 0xc06034fb
bufshutdown() at bufshutdown+0x39c
pc = 0xc0352a90 lr = 0xc02bd8e8 (kern_reboot+0x1e0)
sp = 0xd75ebd80 fp = 0xd75ebda8
r4 = 0x00000000 r5 = 0xc3afbb80
r6 = 0xc3afbb9c r7 = 0xc05f6199
r8 = 0xc070ab5c r9 = 0x00000000
r10 = 0x0000001f
kern_reboot() at kern_reboot+0x1e0
pc = 0xc02bd8e8 lr = 0xc02bd694 (sys_reboot+0x3a8)
sp = 0xd75ebdb0 fp = 0xd75ebde0
r4 = 0x00000000 r5 = 0xd75ebe00
r6 = 0x00000000 r7 = 0xc07be170
r8 = 0x00000000 r9 = 0xd75ebdf8
sys_reboot() at sys_reboot+0x3a8
pc = 0xc02bd694 lr = 0xc05822b0 (swi_handler+0x318)
sp = 0xd75ebde8 fp = 0xd75ebe48
r4 = 0xc3a5f000 r5 = 0xc3a5b000
r6 = 0x00000000 r7 = 0xc07be170
r8 = 0x00000000 r9 = 0xd75ebdf8
r10 = 0x0000001f
swi_handler() at swi_handler+0x318
pc = 0xc05822b0 lr = 0xc056878c (swi_exit)
sp = 0xd75ebe50 fp = 0xbfbfe978
r4 = 0x00008ab8 r5 = 0x000ed82c
r6 = 0x0000004e r7 = 0x00000037
r8 = 0x0000000f r9 = 0x0000001e
r10 = 0x0000001f
swi_exit() at swi_exit
pc = 0xc056878c lr = 0xc056878c (swi_exit)
sp = 0xd75ebe50 fp = 0xbfbfe978
db>
Thanks for reading and any guidance.
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