[Bug runtime/2532] "-b" causes stpd warnings or crash on 2.6.17-rc1

["guij at cn dot ibm dot com" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From guij at cn dot ibm dot com  2006-04-09 16:00 -------
This problem also exists on i686/2.6.17-rc1. 
The warnings when merge=1 are same.
When merge=0, the exception information is:
-----------------------------------------------------------------
BUG: warning at fs/proc/generic.c:732/remove_proc_entry()
 <c0178404> remove_proc_entry+0xbd/0x10d   <d09fb987>
_stp_unregister_procfs+0x7c/0xe5 [stap_10931]
 <c012c337> sys_delete_module+0x113/0x138   <c0102557> sysenter_past_esp+0x54/0x75
remove_proc_entry: systemtap/stap_10931 busy, count=1 
BUG: unable to handle kernel paging request at virtual address d0a3fb78
 printing eip:
c0130aaf
*pde = 01442067
*pte = 00000000
Oops: 0000 [#5]
SMP 
Modules linked in: video button battery ac snd_ens1371 snd_rawmidi
snd_seq_device snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_
oss snd_pcm snd_timer snd soundcore snd_page_alloc
CPU:    0
EIP:    0060:[<c0130aaf>]    Not tainted VLI
EFLAGS: 00010286   (2.6.17-rc1 #1) 
EIP is at relay_file_mmap_close+0xf/0x14
eax: ccd89340   ebx: d0a3fb70   ecx: ccd89340   edx: c15f0c00
esi: cbe025f4   edi: cbda4c80   ebp: 00000001   esp: cdc8ef5c
ds: 007b   es: 007b   ss: 0068
Process stpd (pid: 11022, threadinfo=cdc8e000 task=cc682a90)
Stack: <0>ce5d6494 c013d9bd c1203b60 ce5d6494 c013f2e2 c1203b60 0000084c cbda4c80 
       cbda4cc8 00000000 c01151a5 cdc8e000 cc682a90 c011983c ce2af240 00000000 
       cdc8e000 cdc8e000 c0119aa3 00000000 00000000 0049a660 cdc8e000 c0102557 
Call Trace:
 <c013d9bd> remove_vma+0x19/0x36   <c013f2e2> exit_mmap+0xc1/0xd9
 <c01151a5> mmput+0x20/0x75   <c011983c> do_exit+0x196/0x36e
 <c0119aa3> sys_exit_group+0x0/0xd   <c0102557> sysenter_past_esp+0x54/0x75
Code: 83 38 00 75 f4 eb 08 0f 0b 31 00 9d d8 30 c0 b8 09 00 00 00 e8 09 8c fe ff
c3 90 90 53 8b 48 50 8b 51 14 8b 5a 10 8b 50 4c 89 
c8 <ff> 53 08 5b c3 57 89 cf 89 d1 56 53 31 db 2b 48 04 8b 70 50 3b  
 <1>Fixing recursive fault but reboot is needed! 

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http://sourceware.org/bugzilla/show_bug.cgi?id=2532

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