Date: Tue, 12 Sep 2017 23:16:31 -0700 From: Mark Millard <markmi@dsl-only.net> To: Emmanuel Vadot <manu@bidouilliste.com>, freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: FYI: Pine64+ 2GB (so A64) booting and non-debug vs. debug kernel: nondebug+INVARIANTS+INVARIANT_SUPPORT sufficient to boot Message-ID: <E450D0E4-0086-468B-9D0C-ED3DBBB13945@dsl-only.net> In-Reply-To: <1C18FF04-6772-4E9C-88C5-B8D5478C5809@dsl-only.net> References: <1C18FF04-6772-4E9C-88C5-B8D5478C5809@dsl-only.net>
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[Back to nooptions for INVARIANTS and INVARIANT_SUPPORT
but now verbose booting. taskqgroup_adjust_softirq(0)...
is the one to not get a "done." before failure.]
On 2017-Sep-12, at 7:19 PM, Mark Millard <markmi@dsl-only.net> wrote:
> I took my normal GENERIC-NODBG (that includes GENERIC)
> and changed INVARIANTS and INVARIANT_SUPPORT to have
> "options" status instead of "nooptions" status. The
> result boots (so far no counterexamples). (This is
> head -r323246 .)
>=20
> So it appears that one or more INVARIANT tests are
> "fixing" the Pine64+ 2GB boot problem. I've no clue
> which. But other debug options are not required.
>=20
> FYI. . .
>=20
> # more /usr/src/sys/arm64/conf/GENERIC-NODBG =
=
=20
> #
> # GENERIC -- Custom configuration for the arm64/aarch64
> #
>=20
> include "GENERIC"
>=20
> ident GENERIC-NODBG
>=20
> makeoptions DEBUG=3D-g # Build kernel with gdb(1) =
debug symbols
>=20
> options ALT_BREAK_TO_DEBUGGER
>=20
> options KDB # Enable kernel debugger =
support
>=20
> # For minimum debugger support (stable branch) use:
> #options KDB_TRACE # Print a stack trace for a =
panic
> options DDB # Enable the kernel debugger
>=20
> # Extra stuff:
> #options VERBOSE_SYSINIT # Enable verbose sysinit =
messages
> #options BOOTVERBOSE=3D1
> #options BOOTHOWTO=3DRB_VERBOSE
> #options KTR
> #options KTR_MASK=3DKTR_TRAP
> ##options KTR_CPUMASK=3D0xF
> #options KTR_VERBOSE
>=20
> # Disable any extra checking for. . .
> nooptions DEADLKRES # Enable the deadlock resolver
> options INVARIANTS # Enable calls of extra sanity =
checking
> options INVARIANT_SUPPORT # Extra sanity checks of =
internal structures, required by INVARIANTS
> nooptions WITNESS # Enable checks to detect =
deadlocks and cycles
> nooptions WITNESS_SKIPSPIN # Don't run witness on =
spinlocks for speed
> nooptions DIAGNOSTIC
> nooptions MALLOC_DEBUG_MAXZONES # Separate malloc(9) zones
> nooptions BUF_TRACKING
> nooptions FULL_BUF_TRACKING
I've changed to have:
options VERBOSE_SYSINIT # Enable verbose sysinit messages
options BOOTVERBOSE=3D1
options BOOTHOWTO=3DRB_VERBOSE
and:
nooptions INVARIANTS # Enable calls of extra sanity =
checking
nooptions INVARIANT_SUPPORT # Extra sanity checks of =
internal structures, required by INVARIANTS
The tail of the verbose failing boot looks like:
. . .
vt_upgrade(&vt_consdev)... done.
subsystem b000000
nfs_rootconf(0)... done.
fhanew_init(0)... done.
subsystem d000000
proc0_post(0)... done.
subsystem d800000
sctp_syscalls_init(0)... done.
selectinit(0)... done.
subsystem dffff9c
linker_preload_finish(0)... done.
subsystem e000000
kick_init(0)... done.
kstack_cache_init(0)... done.
subsystem e400000
vm_pageout_init(0)... done.
$x.1(&page_kp)... done.
subsystem e800000
$x.1(&vm_kp)... done.
subsystem ea00000
$x.1(&bufspace_kp)... done.
$x.1(&buf_kp)... done.
subsystem ec00000
$x.1(&vnlru_kp)... done.
$x.1(&up_kp)... done.
subsystem ee00000
acpi_acad_ac_only(0)... done.
nfsiod_setup(0)... done.
subsystem f000000
release_aps(0)... Release APs
APs not started
done.
tmr_setup_user_access(0)... done.
intr_irq_shuffle(0)... done.
tqg_record_smp_started(0)... done.
netisr_start(0)... done.
cpuset_init(0)... done.
taskqgroup_adjust_if_config_tqg(0)... done.
identify_cpu_sysinit(0)... CPU 0: ARM Cortex-A53 r0p4 affinity: 0
Instruction Set Attributes 0 =3D <AES+PMULL,SHA1,SHA2,CRC32>
Instruction Set Attributes 1 =3D <0>
Processor Features 0 =3D <AdvSIMD,Float,EL3 32,EL2 32,EL1 =
32,EL0 32>
Processor Features 1 =3D <0>
Memory Model Features 0 =3D <4k Granule,64k =
Granule,MixedEndian,S/NS Mem,16bit ASID,1TB PA>
Memory Model Features 1 =3D <>
Debug Features 0 =3D <2 CTX Breakpoints,4 Watchpoints,6 =
Breakpoints,PMUv3,Debug v8>
Debug Features 1 =3D <0>
Auxiliary Features 0 =3D <0>
Auxiliary Features 1 =3D <0>
CPU 1: (null) (null) r0p0 affinity: 0
CPU 2: (null) (null) r0p0 affinity: 0
CPU 3: (null) (null) r0p0 affinity: 0
done.
taskqgroup_adjust_softirq(0)... x0: ffff000000a1c080
x1: fffffd0001031a80
x2: 3
[ thread pid 0 tid 100055 ]
Stopped at thread_lock_flags_+0x298: ldr w4, [x3, #156]
db>=20
taskqgroup_adjust_softirq seems to be from:
/usr/src/sys/kern/subr_gtaskqueue.c :
TASKQGROUP_DEFINE(softirq, mp_ncpus, 1);
=3D=3D=3D
Mark Millard
markmi at dsl-only.net
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