I can confirm this problem on a Sun Fire V890 when running the install with install console=ttya,9600n8
Attached is the output of the installer.
[ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 4.30.4 2009/08/19 07:21' [ 0.000000] PROMLIB: Root node compatible: [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Linux version 2.6.26-2-sparc64 (Debian 2.6.26-21) (da...@debian.org) (gcc version 4.1.3 20080704 (prerelease) (Debian 4.1.2-25)) #1 Tue Jan 12 22:16:05 UTC 2010 [ 0.000000] console [earlyprom0] enabled [ 0.000000] ARCH: SUN4U [ 0.000000] Ethernet address: 00:03:ba:a8:ef:c7 [ 0.000000] Kernel: Using 1 locked TLB entries for main kernel image. [ 0.000000] Remapping the kernel... done. [ 0.000000] OF stdout device is: /p...@9,700000/e...@1/rsc-cons...@1,3083f8 [ 0.000000] PROM: Built device tree with 200775 bytes of memory. [ 0.000000] Top of RAM: 0xd1ffb08000, Total RAM: 0x7ffb00000 [ 0.000000] Memory hole size: 827392MB [ 0.000000] [0000000318000000-fffff8a000400000] page_structs=131072 node=0 entry=1120/0 [ 0.000000] [0000000318000000-fffff8a000800000] page_structs=131072 node=0 entry=1121/0 [ 0.000000] [0000000318700000-fffff8a000c00000] page_structs=131072 node=0 entry=1122/0 [ 0.000000] [0000000318700000-fffff8a001000000] page_structs=131072 node=0 entry=1123/0 [ 0.000000] [0000000318e00000-fffff8a001400000] page_structs=131072 node=0 entry=1124/0 [ 0.000000] [0000000318e00000-fffff8a001800000] page_structs=131072 node=0 entry=1125/0 [ 0.000000] [0000000319500000-fffff8a001c00000] page_structs=131072 node=0 entry=1126/0 [ 0.000000] [0000000319c00000-fffff8a002000000] page_structs=131072 node=0 entry=1127/0 [ 0.000000] [0000000319c00000-fffff8a002400000] page_structs=131072 node=0 entry=1128/0 [ 0.000000] [000000031a300000-fffff8a002800000] page_structs=131072 node=0 entry=1129/0 [ 0.000000] [000000031a300000-fffff8a002c00000] page_structs=131072 node=0 entry=1130/0 [ 0.000000] [000000031aa00000-fffff8a003000000] page_structs=131072 node=0 entry=1131/0 [ 0.000000] [000000031aa00000-fffff8a003400000] page_structs=131072 node=0 entry=1132/0 [ 0.000000] [000000031b100000-fffff8a003800000] page_structs=131072 node=0 entry=1133/0 [ 0.000000] [0000000334000000-fffff8a003c00000] page_structs=131072 node=0 entry=1232/0 [ 0.000000] [0000000334000000-fffff8a004000000] page_structs=131072 node=0 entry=1233/0 [ 0.000000] [0000000334700000-fffff8a004400000] page_structs=131072 node=0 entry=1234/0 [ 0.000000] [0000000334700000-fffff8a004800000] page_structs=131072 node=0 entry=1235/0 [ 0.000000] [0000000334e00000-fffff8a004c00000] page_structs=131072 node=0 entry=1236/0 [ 0.000000] [0000000334e00000-fffff8a005000000] page_structs=131072 node=0 entry=1237/0 [ 0.000000] [0000000335500000-fffff8a005400000] page_structs=131072 node=0 entry=1238/0 [ 0.000000] [0000000335c00000-fffff8a005800000] page_structs=131072 node=0 entry=1239/0 [ 0.000000] [0000000335c00000-fffff8a005c00000] page_structs=131072 node=0 entry=1240/0 [ 0.000000] [0000000336300000-fffff8a006000000] page_structs=131072 node=0 entry=1241/0 [ 0.000000] [0000000336300000-fffff8a006400000] page_structs=131072 node=0 entry=1242/0 [ 0.000000] [0000000336a00000-fffff8a006800000] page_structs=131072 node=0 entry=1243/0 [ 0.000000] [0000000336a00000-fffff8a006c00000] page_structs=131072 node=0 entry=1244/0 [ 0.000000] [0000000337100000-fffff8a007000000] page_structs=131072 node=0 entry=1245/0 [ 0.000000] [0000000350000000-fffff8a007400000] page_structs=131072 node=0 entry=1344/0 [ 0.000000] [0000000350000000-fffff8a007800000] page_structs=131072 node=0 entry=1345/0 [ 0.000000] [0000000350700000-fffff8a007c00000] page_structs=131072 node=0 entry=1346/0 [ 0.000000] [0000000350700000-fffff8a008000000] page_structs=131072 node=0 entry=1347/0 [ 0.000000] [0000000350e00000-fffff8a008400000] page_structs=131072 node=0 entry=1348/0 [ 0.000000] [0000000350e00000-fffff8a008800000] page_structs=131072 node=0 entry=1349/0 [ 0.000000] [0000000351500000-fffff8a008c00000] page_structs=131072 node=0 entry=1350/0 [ 0.000000] [0000000351c00000-fffff8a009000000] page_structs=131072 node=0 entry=1351/0 [ 0.000000] [0000000351c00000-fffff8a009400000] page_structs=131072 node=0 entry=1352/0 [ 0.000000] [0000000352300000-fffff8a009800000] page_structs=131072 node=0 entry=1353/0 [ 0.000000] [0000000352300000-fffff8a009c00000] page_structs=131072 node=0 entry=1354/0 [ 0.000000] [0000000352a00000-fffff8a00a000000] page_structs=131072 node=0 entry=1355/0 [ 0.000000] [0000000352a00000-fffff8a00a400000] page_structs=131072 node=0 entry=1356/0 [ 0.000000] [0000000353100000-fffff8a00a800000] page_structs=131072 node=0 entry=1357/0 [ 0.000000] [000000036c000000-fffff8a00ac00000] page_structs=131072 node=0 entry=1456/0 [ 0.000000] [000000036c000000-fffff8a00b000000] page_structs=131072 node=0 entry=1457/0 [ 0.000000] [000000036c700000-fffff8a00b400000] page_structs=131072 node=0 entry=1458/0 [ 0.000000] [000000036c700000-fffff8a00b800000] page_structs=131072 node=0 entry=1459/0 [ 0.000000] [000000036ce00000-fffff8a00bc00000] page_structs=131072 node=0 entry=1460/0 [ 0.000000] [000000036ce00000-fffff8a00c000000] page_structs=131072 node=0 entry=1461/0 [ 0.000000] [000000036d500000-fffff8a00c400000] page_structs=131072 node=0 entry=1462/0 [ 0.000000] [000000036dc00000-fffff8a00c800000] page_structs=131072 node=0 entry=1463/0 [ 0.000000] [000000036dc00000-fffff8a00cc00000] page_structs=131072 node=0 entry=1464/0 [ 0.000000] [000000036e300000-fffff8a00d000000] page_structs=131072 node=0 entry=1465/0 [ 0.000000] [000000036e300000-fffff8a00d400000] page_structs=131072 node=0 entry=1466/0 [ 0.000000] [000000036ea00000-fffff8a00d800000] page_structs=131072 node=0 entry=1467/0 [ 0.000000] [000000036ea00000-fffff8a00dc00000] page_structs=131072 node=0 entry=1468/0 [ 0.000000] [000000036f100000-fffff8a00e000000] page_structs=131072 node=0 entry=1469/0 [ 0.000000] Zone PFN ranges: [ 0.000000] Normal 83886080 -> 110099844 [ 0.000000] Movable zone start PFN for each node [ 0.000000] early_node_map[6] active PFN ranges [ 0.000000] 0: 83886080 -> 84934656 [ 0.000000] 0: 92274688 -> 93323264 [ 0.000000] 0: 100663296 -> 101711872 [ 0.000000] 0: 109051904 -> 110098431 [ 0.000000] 0: 110098432 -> 110099833 [ 0.000000] 0: 110099836 -> 110099844 [ 0.000000] Booting Linux... [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 4014468 [ 0.000000] Kernel command line: console=ttya,9600n8 [ 0.000000] PID hash table entries: 4096 (order: 12, 32768 bytes) [ 0.000000] clocksource: mult[640000] shift[16] [ 0.000000] clockevent: mult[28f5c28] shift[32] [ 72.781372] Console: colour dummy device 80x25 [ 72.817248] Dentry cache hash table entries: 4194304 (order: 12, 33554432 bytes) [ 72.973814] Inode-cache hash table entries: 2097152 (order: 11, 16777216 bytes) [ 75.935944] Memory: 33261120k available (2592k kernel code, 944k data, 176k init) [fffff80000000000,000000d1ffb08000] [ 76.025915] Calibrating delay using timer specific routine.. 19.85 BogoMIPS (lpj=39708) [ 76.033935] Security Framework initialized [ 76.037975] SELinux: Disabled at boot. [ 76.041774] Capability LSM initialized [ 76.045525] Mount-cache hash table entries: 512 [ 76.050338] Initializing cgroup subsys ns [ 76.054283] Initializing cgroup subsys cpuacct [ 76.058691] Initializing cgroup subsys devices [ 76.063331] Kernel unaligned access at TPC[46d26c] notifier_chain_register+0x10/0x38 [ 76.071001] Unable to handle kernel paging request in mna handler<1> at virtual address e00000a00b000046 [ 76.080437] current->{active_,}mm->context = 0000000000000000 [ 76.086155] current->{active_,}mm->pgd = fffff8d1ff3b2104 [ 76.091530] \|/ ____ \|/ [ 76.091532] "@'/ .. \`@" [ 76.091534] /_| \__/ |_\ [ 76.091536] \__U_/ [ 76.106172] swapper(1): Oops [#1] [ 76.109468] TSTATE: 0000008880f01605 TPC: 000000000046d26c TNPC: 000000000046d270 Y: 00000000 Not tainted [ 76.119259] TPC: <notifier_chain_register+0x10/0x38> [ 76.124197] g0: 00000000000200d0 g1: 0000000000000001 g2: 0000000000000000 g3: e00000a00b000036 [ 76.132862] g4: fffff8d1fe02f6e0 g5: 0000000000000000 g6: fffff8d1fe03c000 g7: 00000000007b6e58 [ 76.141527] o0: 00000000007b7aa8 o1: 0000000000748528 o2: 0000000000000000 o3: fffff8d1fd93df31 [ 76.150192] o4: 0000000000774000 o5: 0000000000000005 sp: fffff8d1fe03f581 ret_pc: 000000000046d35c [ 76.159206] RPC: <atomic_notifier_chain_register+0x1c/0x44> [ 76.164749] l0: fffff8d1fe03c000 l1: fffff8d1fe02f6e0 l2: fffff8d1fe02f140 l3: fffff8d1fe02f3c0 [ 76.173415] l4: 0000000000000002 l5: 000000000073c040 l6: 0000000000000020 l7: 0000000000000010 [ 76.182079] i0: 00000000007b7aa8 i1: 0000000000000000 i2: 0000000000426df4 i3: 0000000000000000 [ 76.190746] i4: 0000000000000000 i5: 0000000000000000 i6: fffff8d1fe03f641 i7: 0000000000782128 [ 76.199415] I7: <kernel_init+0x38/0x204> [ 76.203310] Caller[0000000000782128]: kernel_init+0x38/0x204 [ 76.208941] Caller[0000000000426df8]: kernel_thread+0x38/0x48 [ 76.214661] Caller[000000000067bcf0]: rest_init+0x18/0x60 [ 76.220032] Instruction DUMP: 01000000 10680008 c65a0000 <c200e010> 80a08001 34400007 c6726008 9000e008 c65a0000 [ 76.230783] Kernel panic - not syncing: Attempted to kill init! [ 76.236673] Kernel unaligned access at TPC[46d2e4] notifier_call_chain+0x18/0x74 [ 76.244037] Unable to handle kernel paging request in mna handler<1> at virtual address e00000a00b000036 [ 76.253481] current->{active_,}mm->context = 0000000000000000 [ 76.259200] current->{active_,}mm->pgd = fffff8d1ff3b2104 [ 76.264573] \|/ ____ \|/ [ 76.264575] "@'/ .. \`@" [ 76.264578] /_| \__/ |_\ [ 76.264580] \__U_/ [ 76.279218] swapper(1): Oops [#2] [ 76.282513] TSTATE: 0000000080f09605 TPC: 000000000046d2e4 TNPC: 000000000046d2e8 Y: 00000000 Tainted: G D [ 76.292997] TPC: <notifier_call_chain+0x18/0x74> [ 76.297587] g0: 0000000000744000 g1: 0000000000000001 g2: 0000000000000001 g3: 000000000000299c [ 76.306252] g4: fffff8d1fe02f6e0 g5: 0000000000000000 g6: fffff8d1fe03c000 g7: 0000000000000001 [ 76.314917] o0: e00000a00b000036 o1: 0000000000000000 o2: 00000000007b7ad0 o3: fffff8d1fe03f8e8 [ 76.323583] o4: 0000000000744000 o5: 00000000007bc400 sp: fffff8d1fe03ee01 ret_pc: 000000000055810c [ 76.332607] RPC: <bust_spinlocks+0x48/0x4c> [ 76.336754] l0: e00000a00b000036 l1: 0000000000000000 l2: 00000000007b7ed0 l3: ffffffffffffd6aa [ 76.345419] l4: 00000000007b7ad0 l5: 000000000073c040 l6: 0000000000000020 l7: 0000000000000010 [ 76.354084] i0: 0000000000000000 i1: 0000000000000000 i2: 00000000007b7ad0 i3: fffffffffffffffe [ 76.362749] i4: 0000000000000000 i5: 0000000000004000 i6: fffff8d1fe03eec1 i7: 0000000000456e70 [ 76.371416] I7: <panic+0x6c/0x164> [ 76.374792] Caller[0000000000456e70]: panic+0x6c/0x164 [ 76.379904] Caller[000000000045a260]: do_exit+0x6c/0x6f8 [ 76.385191] Caller[0000000000428c40]: die_if_kernel+0x238/0x2d4 [ 76.391082] Caller[00000000004344b8]: kernel_mna_trap_fault+0xc8/0xfc [ 76.397495] Caller[00000000004349c8]: kernel_unaligned_trap+0x4dc/0x520 [ 76.404081] Caller[0000000000428750]: mem_address_unaligned+0x58/0x90 [ 76.410493] Caller[0000000000405e08]: do_mna+0x44/0x4c [ 76.415606] Caller[000000000046d35c]: atomic_notifier_chain_register+0x1c/0x44 [ 76.422797] Caller[0000000000782128]: kernel_init+0x38/0x204 [ 76.428429] Caller[0000000000426df8]: kernel_thread+0x38/0x48 [ 76.434149] Caller[000000000067bcf0]: rest_init+0x18/0x60 [ 76.439522] Instruction DUMP: e05e0000 1068000f b0102000 <c25c0000> e05c2008 9fc04000 01000000 03000020 b0100008 [ 76.450266] Fixing recursive fault but reboot is needed!