[Bug 201117] sysctl dev.ath.0.diversity causes a panic on the TL-WDR3600

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=201117

            Bug ID: 201117
           Summary: sysctl dev.ath.0.diversity causes a panic on the
                    TL-WDR3600
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: mips
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: darius at dons.net.au

Built from r284780 using
freebsd-wifi-build at 1fab33ad0059cf65894516a2cbc1bda13b7aac0d

Output is..
FreeBSD/mips (freebsd-wifi) (ttyu0)

login: root
No home directory.
Logging in with home = "/".
#
# sysctl dev.ath.0.diversity
ath_hal_reg_read: reg=0x00009fc0, pm=1
Trap cause = 7 (bus error (load or store) - kernel mode)
[ thread pid 145 tid 100047 ]
Stopped at      ath_hal_reg_read+0xc0:  move    s1,v0
db> bt
Tracing pid 145 tid 100047 td 0x80c63000
db_trace_thread+30 (?,?,?,?) ra c042f69000000018 sp 0 sz 0
80087668+114 (0,?,ffffffff,?) ra c042f6a800000020 sp 100000000 sz 1
80086d40+388 (?,?,?,?) ra c042f6c8000000a8 sp 0 sz 0
db_command_loop+70 (?,?,?,?) ra c042f77000000018 sp 0 sz 0
80089948+f4 (?,?,?,?) ra c042f788000001a8 sp 0 sz 0
kdb_trap+100 (?,?,?,?) ra c042f93000000030 sp 0 sz 0
trap+151c (?,?,?,?) ra c042f960000000c8 sp 0 sz 0
MipsKernGenException+ec (0,b8109fc0,9fc0,129038) ra c042fa28000000c8 sp
100000001 sz 1
ath_hal_reg_read+c0 (?,?,?,?) ra c042faf000000030 sp 0 sz 0
pid 145
db> show reg
at          0x80530000  cc_cpu+0xa180
v0          0xdeadc0de
v1                0x27  _DYNAMIC_LINKING+0x26
a0                   0
a1          0xb8109fc0
a2              0x9fc0  _DYNAMIC_LINKING+0x9fbf
a3            0x129038
t0                 0x4  _DYNAMIC_LINKING+0x3
t1                   0
t2                   0
t3                   0
t4                 0x1  _DYNAMIC_LINKING
t5                   0
t6                   0
t7                   0
s0          0xc08cc000
s1                 0x1  _DYNAMIC_LINKING
s2          0x80503134  mips_bus_space_generic+0x4
s3          0xb8100000
s4              0x9fc0  _DYNAMIC_LINKING+0x9fbf
s5                 0x4  _DYNAMIC_LINKING+0x3
s6          0xc042fd38
s7                   0
t8                0x15  _DYNAMIC_LINKING+0x14
t9          0x40582f00
k0          0x804011e8  DELAY+0x3d8
k1          0xc042fb68
gp          0x80519cc0  _gp
sp          0xc042faf0
s8          0x7fffede4
ra          0x800b91c0  ath_hal_reg_read+0xc0
sr              0xfc03  _DYNAMIC_LINKING+0xfc02
lo                 0x1  _DYNAMIC_LINKING
hi              0x3ace  _DYNAMIC_LINKING+0x3acd
bad         0xc08cc1b4
cs          0x4000801c
pc          0x800b91c0  ath_hal_reg_read+0xc0
ath_hal_reg_read+0xc0:  move    s1,v0
db>

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