Date: Sun, 22 Mar 2015 06:54:06 -0500 From: Michael Tuexen <tuexen@freebsd.org> To: "freebsd-arm@freebsd.org" <arm@freebsd.org> Subject: panic: pmap_demote_section: No l2_bucket for wired mapping Message-ID: <AF7A0CA1-6A0C-47CC-B096-646BBD235862@freebsd.org>
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Dear all,
running head on a Raspberry Pi became unstable. When running
r280329 for a while (the machine is exposed to the Internet, so
ssh logins are continuously tried), the machine panics:
panic: pmap_demote_section: No l2_bucket for wired mapping
KDB: enter: panic
[ thread pid 15 tid 100049 ]
Stopped at $d.13: ldrb r15, [r15, r15, ror r15]!
db> where
Tracing pid 15 tid 100049 td 0xc25cc660
db_trace_self() at db_trace_self
pc = 0xc04ed3a0 lr = 0xc0132110 ($a.30+0xf4)
sp = 0xdbf88980 fp = 0xdbf88998
r10 = 0xc070598c
$a.30() at $a.30+0xf4
pc = 0xc0132110 lr = 0xc0131a98 ($a.12+0x270)
sp = 0xdbf889a0 fp = 0xdbf88a40
r4 = 0x00000000 r5 = 0x00000000
r6 = 0x00000072 r10 = 0xc070598c
$a.12() at $a.12+0x270
pc = 0xc0131a98 lr = 0xc0131800 (db_command_loop+0x5c)
sp = 0xdbf88a48 fp = 0xdbf88a58
r4 = 0xc0543cf6 r5 = 0xc0563963
r6 = 0xc0705978 r7 = 0xc0619a84
r8 = 0xc06fba20 r9 = 0xc06fba24
r10 = 0xdbf88c28
db_command_loop() at db_command_loop+0x5c
pc = 0xc0131800 lr = 0xc013423c (db_trap+0xd8)
sp = 0xdbf88a60 fp = 0xdbf88b80
r4 = 0x00000000 r5 = 0xc0705984
r6 = 0xc06fba48 r10 = 0xdbf88c28
db_trap() at db_trap+0xd8
pc = 0xc013423c lr = 0xc02d1180 (kdb_trap+0xbc)
sp = 0xdbf88b88 fp = 0xdbf88ba8
r4 = 0x00000000 r5 = 0x00000001
r6 = 0xc06fba48 r7 = 0xc0619a84
kdb_trap() at kdb_trap+0xbc
pc = 0xc02d1180 lr = 0xc0500784 (undefinedinstruction+0x2b8)
sp = 0xdbf88bb0 fp = 0xdbf88c20
r4 = 0x00000000 r5 = 0x00000000
r6 = 0xc050041c r7 = 0xe7ffffff
r8 = 0xc25cc660 r9 = 0xc02d0a6c
r10 = 0xdbf88c28
undefinedinstruction() at undefinedinstruction+0x2b8
pc = 0xc0500784 lr = 0xc04eea54 (exception_exit)
sp = 0xdbf88c28 fp = 0xdbf88cc0
r4 = 0xc05639b8 r5 = 0xdbf88d14
r6 = 0xc0590e4a r7 = 0xc06edf78
r8 = 0xc25cc660 r9 = 0xc07074d8
r10 = 0xc06edde0
exception_exit() at exception_exit
pc = 0xc04eea54 lr = 0xc02d0a60 (kdb_enter+0x3c)
sp = 0xdbf88cb8 fp = 0xdbf88cc0
r0 = 0xc06fba34 r1 = 0x00000000
r2 = 0xc056701c r3 = 0x000000aa
r4 = 0xc05639b8 r5 = 0xdbf88d14
r6 = 0xc0590e4a r7 = 0xc06edf78
r8 = 0xc25cc660 r9 = 0xc07074d8
r10 = 0xc06edde0 r12 = 0x00000000
$a.14() at $a.14
pc = 0xc02d0a70 lr = 0xc0297928 ($a.14+0xb4)
sp = 0xdbf88cc8 fp = 0xdbf88ce8
r4 = 0x00000100 r10 = 0xc06edde0
$a.14() at $a.14+0xb4
pc = 0xc0297928 lr = 0xc0297864 ($d.13)
sp = 0xdbf88cf0 fp = 0xdbf88d08
r4 = 0xc06ede78 r5 = 0xc0590e4a
r6 = 0xdbf88d14 r7 = 0xc06edde0
r8 = 0xc0d54800 r9 = 0x00000203
r10 = 0xc2bda0bc
$d.13() at $d.13
pc = 0xc0297864 lr = 0xc04f4bd0 ($a.16+0x62c)
sp = 0xdbf88d20 fp = 0xdbf88d60
r4 = 0xc2bda0bc r5 = 0x0bf09c2e
r6 = 0xc2c01df0 r7 = 0x20300000
$a.16() at $a.16+0x62c
pc = 0xc04f4bd0 lr = 0xc04fabd8 ($a.110+0xc0)
sp = 0xdbf88d68 fp = 0xdbf88da8
r4 = 0xc152a830 r5 = 0x20300000
r6 = 0xd9fa0000 r7 = 0x00000203
r8 = 0xc2bda0bc r9 = 0xc2bda0cc
r10 = 0x00000000
$a.110() at $a.110+0xc0
pc = 0xc04fabd8 lr = 0xc04db974 ($a.27+0x84)
sp = 0xdbf88db0 fp = 0xdbf88e28
r4 = 0xc0d57500 r5 = 0x00000005
r6 = 0x00000562 r7 = 0x00000006
r8 = 0x00000001 r9 = 0xc058d0d7
r10 = 0xc058d0d7
$a.27() at $a.27+0x84
pc = 0xc04db974 lr = 0xc0265bc8 (fork_exit+0x80)
sp = 0xdbf88e30 fp = 0xdbf88e48
r4 = 0xc25cc660 r5 = 0xc2760000
r6 = 0xc04da8a4 r7 = 0x00000000
r8 = 0xdbf88e50 r9 = 0xc06fb5c0
r10 = 0xc065ae00
fork_exit() at fork_exit+0x80
pc = 0xc0265bc8 lr = 0xc04ee9e4 (swi_exit)
sp = 0xdbf88e50 fp = 0x00000000
r4 = 0xc04da8a4 r5 = 0x00000000
r6 = 0xc06fc70c r7 = 0xc06fb5c4
r8 = 0x00000104 r10 = 0xc065ae00
swi_exit() at swi_exit
pc = 0xc04ee9e4 lr = 0xc04ee9e4 (swi_exit)
sp = 0xdbf88e50 fp = 0x00000000
db>
It might be related to
https://svnweb.freebsd.org/changeset/base/280324
Any idea what is going on?
Best regards
Michael
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