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SubjectPANIC caused by dequeue_signal() in current Linus BK tree
Hi,

The current Linus BK tree panics on INIT on my UP Athlon highmem box
(compiled with SMP and preempt enabled) -- more info available on request:

ksymoops 2.4.5 on i686 2.4.19. Options used
-v vmlinux (specified)
-K (specified)
-L (specified)
-o /lib/modules/2.5.33/ (specified)
-m ./System.map (specified)

No modules in ksyms, skipping objects
Unable to handle kernel paging request at virtual address 5a5a5a5e
c01283a7
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0060:[<c01283a7>] Tainted: G S
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010006
eax: ffffffff ebx: 00000002 ecx: c1b74040 edx: 5a5a5a5a
esi: c1b78000 edi: c1b79f30 ebp: f7aeffd0 esp: c1b79ed0
ds: 0068 es: 0068 ss: 0068
Stack: 00000000 40400000 40017000 f7af9400 c04f00e0 c0131309 c04f00e0 f7af9400
c1b78000 c1b78000 00000000 c1b79f30 c01297e7 f7aeffd0 c1b74658
c1b79f30
c1b74658 c1b79fc4 c1b74658 c1b78000 c1b79f30 c01078d5 c1b79f30
c1b79fc4
Call Trace: [<c0131309>] [<c01297e7>] [<c01078d5>] [<c01354eb>] [<c0135377>]
[<c0135808>] [<c013539a>] [<c013584b>] [<c0129c30>] [<c0107b2a>]
Code: 39 5a 04 74 38 89 d5 8b 12 85 d2 75 f3 8b 54 24 34 8d 43 ff


>>EIP; c01283a7 <dequeue_signal+87/140> <=====

>>eax; ffffffff <END_OF_CODE+3faa41db/????>
>>ecx; c1b74040 <END_OF_CODE+161821c/????>
>>edx; 5a5a5a5a Before first symbol
>>esi; c1b78000 <END_OF_CODE+161c1dc/????>
>>edi; c1b79f30 <END_OF_CODE+161e10c/????>
>>ebp; f7aeffd0 <END_OF_CODE+375941ac/????>
>>esp; c1b79ed0 <END_OF_CODE+161e0ac/????>

Trace; c0131309 <zap_pmd_range+49/60>
Trace; c01297e7 <get_signal_to_deliver+97/370>
Trace; c01078d5 <do_signal+55/b0>
Trace; c01354eb <unmap_region+13b/170>
Trace; c0135377 <unmap_vma+87/90>
Trace; c0135808 <do_munmap+138/190>
Trace; c013539a <unmap_vma_list+1a/30>
Trace; c013584b <do_munmap+17b/190>
Trace; c0129c30 <sys_rt_sigprocmask+170/2d0>
Trace; c0107b2a <work_notifysig+13/15>

Code; c01283a7 <dequeue_signal+87/140>
00000000 <_EIP>:
Code; c01283a7 <dequeue_signal+87/140> <=====
0: 39 5a 04 cmp %ebx,0x4(%edx) <=====
Code; c01283aa <dequeue_signal+8a/140>
3: 74 38 je 3d <_EIP+0x3d> c01283e4
<dequeue_signal+c4/140>
Code; c01283ac <dequeue_signal+8c/140>
5: 89 d5 mov %edx,%ebp
Code; c01283ae <dequeue_signal+8e/140>
7: 8b 12 mov (%edx),%edx
Code; c01283b0 <dequeue_signal+90/140>
9: 85 d2 test %edx,%edx
Code; c01283b2 <dequeue_signal+92/140>
b: 75 f3 jne 0 <_EIP>
Code; c01283b4 <dequeue_signal+94/140>
d: 8b 54 24 34 mov 0x34(%esp,1),%edx
Code; c01283b8 <dequeue_signal+98/140>
11: 8d 43 ff lea 0xffffffff(%ebx),%eax

<0>Kernel panic: Attempted to kill init!

Best regards,

Anton


--
"I've not lost my mind. It's backed up on tape somewhere." - Unknown
--
Anton Altaparmakov <aia21 at cantab.net> (replace at with @)
Linux NTFS Maintainer / IRC: #ntfs on irc.freenode.net
WWW: http://linux-ntfs.sf.net/ & http://www-stu.christs.cam.ac.uk/~aia21/

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