On Sat, 10 Dec 2005, David S. Miller wrote:
It doesn't trigger for me here with the Xorg server, on an
Ultra60 with CreatorFB. I do get the cursor in the corner
and a non-functional screen but I can switch around to other
VC's and kill the X server cleanly. I definitely don't get
those kernel log messages.
Please retest with this debug tracing added:
This generates two extra lines in the dmesg output, I have included the
bug message too, just in case.
IO[X:6761]:
remap_pfn_range(s[71800000]e[71c10000],f[71800000],pfn[1fc0060],sz[2000],prot[80000000000006b0])
IO[X:6761]:
remap_pfn_range(s[71800000]e[71c10000],f[71802000],pfn[1fc0060],sz[2000],prot[80000000000006b0])
kernel BUG at arch/sparc64/mm/generic.c:77!
\|/ ____ \|/
"@'/ .. \`@"
/_| \__/ |_\
\__U_/
X(6761): Kernel bad sw trap 5 [#1]
TSTATE: 0000000011009603 TPC: 0000000000434da0 TNPC: 0000000000434da4 Y:
00000000 Not tainted
TPC: <io_remap_pfn_range+0x400/0x420>
g0: fffff8000703f261 g1: 0000000000669400 g2: 0000000000000001 g3:
0000000000001f4c
g4: fffff80007e2aa60 g5: 0000000000000010 g6: fffff80007030000 g7:
0000000000000000
o0: 000000000000002f o1: 000000000061f1a8 o2: 000000000000004d o3:
0000000011812000
o4: 000001fc00610000 o5: fffff800041b8c00 sp: fffff8000703f241 ret_pc:
0000000000434d98
RPC: <io_remap_pfn_range+0x3f8/0x420>
l0: 0000000071802000 l1: 000001fb8edfe000 l2: 0000000071804000 l3:
000001fb8edfe000
l4: 000001fb8edfe000 l5: e000000000000f8a l6: a000000000000f8a l7:
c000000000000f8a
i0: 0000000071804000 i1: 0000000071802000 i2: 0000000000000000 i3:
0000000071802000
i4: 80000000000006b0 i5: fffff80005a7000c i6: fffff8000703f361 i7:
000000000053b224
I7: <sbusfb_mmap_helper+0x104/0x160>
Caller[000000000053b224]: sbusfb_mmap_helper+0x104/0x160
Caller[00000000005335b4]: fb_mmap+0x134/0x160
Caller[0000000000478748]: do_mmap_pgoff+0x368/0x720
Caller[00000000004161d8]: sys_mmap+0xf8/0x160
Caller[0000000000406c94]: linux_sparc_syscall32+0x34/0x40
Caller[0000000000286378]: 0x286378
Instruction DUMP: 9210204d 7fff6e02 901221a8 <91d02005> 7ffff76f
b13ee000 81cfe008 01000000 30680003
--
//Aho
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