Problems starting dynamically linked binaries (sh3)

[Nylund, M. <Mar...@em...>]

I'm having problems to start dynamically linked applications in
userspace.  The bootlog below should give enough information of the
system. Here are some
symptoms:

- The kernel seems to boot just fine (I've also tried 2.6.19).

- Trying to start a dynamically linked /sbin/init results an "unaligned
  userspace access error" (see bootlog in Listing 1) '/sbin/init' is a
simple
  dynamically linked "hello world" program here.
 =20
- Starting a statically linked /sbin/init works.

I know that the linker uses mmap somehow to map the libc into the
processes address space and apparently here something goes wrong, but
I'm not=20
enough of a memory management hacker to figure out what.

Is mm for sh3 somehow broken? Could it be the toolchain which is causing
this (taken from www.sh-linux.org rpm repository)?

Listing 2 shows another trace message which comes in an enless loop when
I try to run my initialisation scripts, (only on 2.6.21-rc4 -never
happened on
2.6.19)

Thanks for any help,
martin

---- Listing
1---------------------------------------------------------------
Linux version 2.6.21-rc4 (hico@emdistvm-xubuntu) (gcc version 3.4.4) #12
Mon Mar 19 16:58:19 CET 2007 On node 0 totalpages: 8192
  Normal zone: 64 pages used for memmap
  Normal zone: 0 pages reserved
  Normal zone: 8128 pages, LIFO batch:0
Built 1 zonelists.  Total pages: 8128
Kernel command line: disptype=3D0 mem=3D32M console=3DttySC0,115200
ip=3D192.168.105.52:192.168.105.50:192.168.105.254:255.255.255.0:abc::off=

debug root=3D/dev/nfs ro
nfsroot=3D/home/hico/uspc/rootfs,rsize=3D1024,wsize=3D1024 =
earlyprintk=3Dserial
PID hash table entries: 128 (order: 7, 512 bytes) Interval =3D 83325 =
Using
tmu for system timer disabling early console
Console: colour dummy device 80x25
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
Memory: 30300k/32768k available (1852k kernel code, 2468k reserved, 81k
data, 72k init) Calibrating delay loop... 66.35 BogoMIPS (lpj=3D331776)
Mount-cache hash table entries: 512
CPU: SH7727
NET: Registered protocol family 16
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP
established hash table entries: 1024 (order: 1, 8192 bytes) TCP bind
hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
TCP reno registered
JFFS2 version 2.2. (NAND) (C) 2001-2006 Red Hat, Inc.
JFS: nTxBlock =3D 236, nTxLock =3D 1893
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
SuperH SCI(F) driver initialized
sh-sci: ttySC0 at MMIO 0xfffffe80 (irq =3D 25) is a sci
sh-sci: ttySC1 at MMIO 0xa4000150 (irq =3D 59) is a scif
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: loaded (max 8 devices)
cs89x0:cs89x0_probe(0x0)
PP_addr at b4000000[a]: 0x3128
cs89x0.c: v2.4.3-pre1 Russell Nelson <ne...@cr...>, Andrew Morton
<an...@uo...>
eth0: cs8900 rev K found at 0xb4000000
cs89x0: No EEPROM
cs89x0 media RJ-45, IRQ 34, programmed I/O, MAC 11:22:33:44:55:66
cs89x0_probe1() successful
cs89x0:cs89x0_probe(0x0)
cs89x0: request_region(0xb4000003, 0x10) failed
cs89x0: no cs8900 or cs8920 detected.  Be sure to disable PnP with SETUP
physmap platform flash device: 01000000 at a0000000
physmap-flash.0: Found 2 x16 devices at 0x0 in 32-bit bank  Intel/Sharp
Extended Query Table at 0x0031 Using buffer write method
cfi_cmdset_0001: Erase suspend on write enabled
erase region 0: offset=3D0x0,size=3D0x40000,blocks=3D64
cmdlinepart partition parsing not available
Searching for RedBoot partition table in physmap-flash.0 at offset
0xfc0000 7 RedBoot partitions found on MTD device physmap-flash.0
mice: PS/2 mouse device common for all mice
TCP cubic registered
NET: Registered protocol family 1
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
eth0: using half-duplex 10Base-T (RJ-45)
IP-Config: Complete:
      device=3Deth0, addr=3D192.168.105.52, mask=3D255.255.255.0,
gw=3D192.168.105.254,
     host=3Dabc, domain=3D, nis-domain=3D(none),
     bootserver=3D192.168.105.50, rootserver=3D192.168.105.50, =
rootpath=3D
Looking up port of RPC 100003/2 on 192.168.105.50 Looking up port of RPC
100005/1 on 192.168.105.50
VFS: Mounted root (nfs filesystem) readonly.
Freeing unused kernel memory: 72k freed

Fixing up unaligned userspace access in "init" pid=3D1 pc=3D0x00000a0e
ins=3D0x5f73=20
Fixing up unaligned userspace access in "init" pid=3D1 pc=3D0x00000a10
ins=3D0x6966
------------------------------------------------------------------------
-----


---- Listing
2---------------------------------------------------------------
VM: killing process rcS
Bad pte =3D ffffffff, process =3D ???, vm_flags =3D 1875, vaddr =3D =
40b000
Stack: (0x8c581dd8 to 0x8c582000)
1dc0:                                                       8c237838
0040b000
1de0: 0040b000 8c237cb8 8e01a02c 003f4000 8c581e5c 8c3ed17c 00000000
ffffffff
1e00: 00000001 00000000 00000001 00518000 8e0d6004 8e0d6004 8e0d6004
00000000
1e20: 00000000 8c3fb544 8c5df9f0 00517fff 8c23c0ce 8c3d4850 00000001
0000000b
1e40: 8c5df9b0 8c3ed17c 00000000 ffffffff 8c581e58 00000000 00000000
8c3fb544
1e60: 8c20d25c 8c580000 8c5a99c0 0000023c 8c5df9b0 8c2119d6 8c5a9bfc
8c3d5630
1e80: 00000000 00000000 8c5a9a3c 8c211fea ffffff0f 8c580000 8c581ee0
8c580000
1ea0: 0000023c 8c580000 0000000b 8c21a70a 0000000b 8c581f60 8c581f9c
8c5a9c18
1ec0: 8c203bf4 7bc5159c 8c581f60 8c5a9c18 8c581fdc 8c581f9c 8c581ff4
00485570
1ee0: 0000000b 00000000 00000000 000000aa 00000000 00000000 00000093
00000001
1f00: 0001ffec 00000000 8c49c000 00000fec 00000010 8e0d8fec 00000010
8c2496d0
1f20: 00000000 8c3f9202 8c2496d0 8c3f9200 fffffff8 8c3f92fc 8c3d5614
8c3f92fc
1f40: 8c3f92fc 8c249870 8c581f9c 7bc515b0 00000000 8c24990e 8c3f9200
8c3f9300
1f60: 00000000 8c2034f0 7bc5159c 7bc51f24 8c49c000 8c20350c 0055ced8
8c20706c
1f80: 7bc5159c 7bc51f24 00485570 ffffff0f 00000001 8c581ff4 8c580000
fffffff2
1fa0: 00000000 00000002 0000000b 7bc519b0 7bc515b0 0055ced8 00000400
7bc519b0
1fc0: 7bc515b0 0055ced8 0055d068 00485420 7bc51f24 7bc5159c 7bc5159c
00485536
1fe0: 00417386 00000001 0055c3e0 00000003 00000000 0000004c 00000160
00000000

Call trace:
[<8c3ed17c>] pidhash_init+0x4c/0x100
[<8c237cb8>] unmap_vmas+0x1a8/0x430
[<8c3ed17c>] pidhash_init+0x4c/0x100
[<8c23c0ce>] exit_mmap+0x3e/0xf0
[<8c3ed17c>] pidhash_init+0x4c/0x100
[<8c20d25c>] mmput+0x3c/0xb0
[<8c2119d6>] do_exit+0x1c6/0x730
[<8c211fea>] do_group_exit+0x7a/0x90
[<8c21a70a>] get_signal_to_deliver+0x2da/0x330
[<8c203bf4>] do_notify_resume+0x64/0x5c0
[<8c2496d0>] search_binary_handler+0x40/0x110
[<8c2496d0>] search_binary_handler+0x40/0x110
[<8c249870>] do_execve+0xd0/0x1e0
[<8c24990e>] do_execve+0x16e/0x1e0
[<8c2034f0>] sys_execve+0x30/0x70
[<8c20350c>] sys_execve+0x4c/0x70
[<8c20706c>] restore_all+0x0/0x68
------------------------------------------------------------------------
-------