Date: Thu, 3 Aug 2023 23:59:32 -0700 From: Mark Millard <marklmi@yahoo.com> To: FreeBSD ARM List <freebsd-arm@freebsd.org>, Current FreeBSD <freebsd-current@freebsd.org> Subject: A native armv7 panic during kyua runs: sys/netinet6/exthdr:exthdr -> Fatal kernel mode data abort: 'Alignment Fault' on read Message-ID: <BF9831C7-0E23-45F0-BF41-B72F2111F70B@yahoo.com> References: <BF9831C7-0E23-45F0-BF41-B72F2111F70B.ref@yahoo.com>
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While discovered via an attempted overall kyua run, the following is
sufficient to get the crash in my native armv7 context:
# /usr/bin/kyua test -k /usr/tests/Kyuafile sys/netinet6/exthdr:exthdr
sys/netinet6/exthdr:exthdr -> Fatal kernel mode data abort: 'Alignment =
Fault' on read
trapframe: 0xdfb97aa0
FSR=3D00000001, FAR=3Ddb43ab76, spsr=3D60000013
r0 =3Ddfedd000, r1 =3Ddfb97b34, r2 =3D00000000, r3 =3D00000000
r4 =3D00000000, r5 =3D00000000, r6 =3Ddb43ab76, r7 =3Ddb43ab66
r8 =3Dc096383c, r9 =3D00000000, r10=3Ddb132400, r11=3Ddfb97b60
r12=3D00000000, ssp=3Ddfb97b30, slr=3Dc0b4e2c0, pc =3Dc04e6b70
panic: Fatal abort
cpuid =3D 0
time =3D 1691131498
KDB: stack backtrace:
db_trace_self() at db_trace_self
pc =3D 0xc065f414 lr =3D 0xc007db80 =
(db_trace_self_wrapper+0x30)
sp =3D 0xdfb97858 fp =3D 0xdfb97970
db_trace_self_wrapper() at db_trace_self_wrapper+0x30
pc =3D 0xc007db80 lr =3D 0xc031a834 (vpanic+0x140)
sp =3D 0xdfb97978 fp =3D 0xdfb97998
r4 =3D 0x00000100 r5 =3D 0x00000000
r6 =3D 0xc07c369a r7 =3D 0xc0b32e58
vpanic() at vpanic+0x140
pc =3D 0xc031a834 lr =3D 0xc031a6f4 (vpanic)
sp =3D 0xdfb979a0 fp =3D 0xdfb979a4
r4 =3D 0xdfb97aa0 r5 =3D 0x00000013
r6 =3D 0xdb43ab76 r7 =3D 0x00000001
r8 =3D 0x00000001 r9 =3D 0xdfedd000
r10 =3D 0xdb43ab76
vpanic() at vpanic
pc =3D 0xc031a6f4 lr =3D 0xc06849dc (abort_align)
sp =3D 0xdfb979ac fp =3D 0xdfb979d8
r4 =3D 0x00000001 r5 =3D 0x00000001
r6 =3D 0xdfedd000 r7 =3D 0xdb43ab76
r8 =3D 0xdfb979a4 r9 =3D 0xc031a6f4
r10 =3D 0xdfb979ac
abort_align() at abort_align
pc =3D 0xc06849dc lr =3D 0xc0684a50 (abort_align+0x74)
sp =3D 0xdfb979e0 fp =3D 0xdfb979f8
r4 =3D 0x00000013 r10 =3D 0xdb43ab76
abort_align() at abort_align+0x74
pc =3D 0xc0684a50 lr =3D 0xc06846a8 (abort_handler+0x45c)
sp =3D 0xdfb97a00 fp =3D 0xdfb97a98
r4 =3D 0x00000000 r10 =3D 0xdb43ab76
abort_handler() at abort_handler+0x45c
pc =3D 0xc06846a8 lr =3D 0xc0661cc8 (exception_exit)
sp =3D 0xdfb97aa0 fp =3D 0xdfb97b60
r4 =3D 0x00000000 r5 =3D 0x00000000
r6 =3D 0xdb43ab76 r7 =3D 0xdb43ab66
r8 =3D 0xc096383c r9 =3D 0x00000000
r10 =3D 0xdb132400
exception_exit() at exception_exit
pc =3D 0xc0661cc8 lr =3D 0xc0b4e2c0 (__pcpu)
sp =3D 0xdfb97b30 fp =3D 0xdfb97b60
r0 =3D 0xdfedd000 r1 =3D 0xdfb97b34
r2 =3D 0x00000000 r3 =3D 0x00000000
r4 =3D 0x00000000 r5 =3D 0x00000000
r6 =3D 0xdb43ab76 r7 =3D 0xdb43ab66
r8 =3D 0xc096383c r9 =3D 0x00000000
r10 =3D 0xdb132400 r12 =3D 0x00000000
in6ifa_ifwithaddr() at in6ifa_ifwithaddr+0x30
pc =3D 0xc04e6b70 lr =3D 0xc04f9030 (ip6_input+0xd38)
sp =3D 0xdfb97b68 fp =3D 0xdfb97c28
r4 =3D 0xdb43ab76 r5 =3D 0xdb43ab5e
r6 =3D 0x00000000 r7 =3D 0xdb43ab66
ip6_input() at ip6_input+0xd38
pc =3D 0xc04f9030 lr =3D 0xc046d66c (netisr_dispatch_src+0xf8)
sp =3D 0xdfb97c30 fp =3D 0xdfb97c58
r4 =3D 0xdb43ab00 r5 =3D 0x00000006
r6 =3D 0x00000007 r7 =3D 0xc0b49d50
r8 =3D 0xdafea0c0 r9 =3D 0xdb43ab00
r10 =3D 0x00000086
netisr_dispatch_src() at netisr_dispatch_src+0xf8
pc =3D 0xc046d66c lr =3D 0xc04641b0 (ether_demux+0x18c)
sp =3D 0xdfb97c60 fp =3D 0xdfb97c78
r4 =3D 0x00000006 r5 =3D 0x00001201
r6 =3D 0xdb132400 r7 =3D 0x000000ff
r8 =3D 0xdafea0c0 r9 =3D 0xdb43ab00
r10 =3D 0x00000086
ether_demux() at ether_demux+0x18c
pc =3D 0xc04641b0 lr =3D 0xc0465880 (ether_nh_input+0x490)
sp =3D 0xdfb97c80 fp =3D 0xdfb97ce0
r4 =3D 0xdb132400 r5 =3D 0xdb43ab00
r6 =3D 0xdb43ab50 r10 =3D 0x00000086
ether_nh_input() at ether_nh_input+0x490
pc =3D 0xc0465880 lr =3D 0xc046d66c (netisr_dispatch_src+0xf8)
sp =3D 0xdfb97ce8 fp =3D 0xdfb97d10
r4 =3D 0xdb43ab00 r5 =3D 0x00000005
r6 =3D 0x0000000c r7 =3D 0xc0b49d30
r8 =3D 0xdafea0c0 r9 =3D 0xdb43ab00
r10 =3D 0xc098d18f
netisr_dispatch_src() at netisr_dispatch_src+0xf8
pc =3D 0xc046d66c lr =3D 0xc04645c4 (ether_input+0x50)
sp =3D 0xdfb97d18 fp =3D 0xdfb97d48
r4 =3D 0xdb43ab00 r5 =3D 0x00000000
r6 =3D 0x00008803 r7 =3D 0x00000000
r8 =3D 0xdafea0c0 r9 =3D 0xdb43ab00
r10 =3D 0xc098d18f
ether_input() at ether_input+0x50
pc =3D 0xc04645c4 lr =3D 0xdffb3f08 ($a.10+0x108)
sp =3D 0xdfb97d50 fp =3D 0xdfb97d78
r4 =3D 0xdb132400 r5 =3D 0xdaff8b00
r6 =3D 0xdaff8b10 r7 =3D 0x00000000
r8 =3D 0x00000000 r10 =3D 0xc098d18f
$a.10() at $a.10+0x108
pc =3D 0xdffb3f08 lr =3D 0xc038cb2c =
(taskqueue_run_locked+0x1c4)
sp =3D 0xdfb97d80 fp =3D 0xdfb97dd8
r4 =3D 0xe0145100 r5 =3D 0xdaff8b2c
r6 =3D 0xe0145150 r7 =3D 0x00000001
r8 =3D 0x00000000 r9 =3D 0xdfb97d90
r10 =3D 0x00000001
taskqueue_run_locked() at taskqueue_run_locked+0x1c4
pc =3D 0xc038cb2c lr =3D 0xc038e4e4 =
(taskqueue_thread_loop+0x1b0)
sp =3D 0xdfb97de0 fp =3D 0xdfb97e10
r4 =3D 0xe0145100 r5 =3D 0xe0145140
r6 =3D 0xc07af4c4 r7 =3D 0x00000000
r8 =3D 0xc098d18f r9 =3D 0x00000100
r10 =3D 0xc0b228a0
taskqueue_thread_loop() at taskqueue_thread_loop+0x1b0
pc =3D 0xc038e4e4 lr =3D 0xc02cdf0c (fork_exit+0xc0)
sp =3D 0xdfb97e18 fp =3D 0xdfb97e38
r4 =3D 0xdfedd000 r5 =3D 0xc0b224e0
r6 =3D 0xc038e334 r7 =3D 0xdffc4f54
r8 =3D 0xdfb97e40 r9 =3D 0xc098d191
fork_exit() at fork_exit+0xc0
pc =3D 0xc02cdf0c lr =3D 0xc0661c5c (swi_exit)
sp =3D 0xdfb97e40 fp =3D 0x00000000
r4 =3D 0xc038e334 r5 =3D 0xdffc4f54
r6 =3D 0xc0b45d84 r7 =3D 0xd73bcba0
r8 =3D 0x00000001 r10 =3D 0xc0b228a0
swi_exit() at swi_exit
pc =3D 0xc0661c5c lr =3D 0xc0661c5c (swi_exit)
sp =3D 0xdfb97e40 fp =3D 0x00000000
KDB: enter: panic
[ thread pid 0 tid 100230 ]
For reference:
# uname -apKU
FreeBSD OPiP2E-RPi2v1p1 14.0-CURRENT FreeBSD 14.0-CURRENT armv7 1400093 =
#6 main-n264334-215bab7924f6-dirty: Tue Jul 25 23:11:39 PDT 2023 =
root@CA72-16Gp-ZFS:/usr/obj/BUILDs/main-CA7-nodbg-clang/usr/main-src/arm.a=
rmv7/sys/GENERIC-NODBG-CA7 arm armv7 1400093 1400093
The OrangePi+ 2Ed was the type of system booted and tested.
=3D=3D=3D
Mark Millard
marklmi at yahoo.com
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