Messages in this thread | | | Date | Fri, 12 Jul 2002 20:37:37 +0200 | From | Dave Jones <> | Subject | Re: [CHECKER] 56 potential lock/unlock bugs in 2.5.8 |
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On Fri, Jul 12, 2002 at 08:32:20PM +0200, Roman Zippel wrote: > Which last few kernels? Was it a ffs or an ofs image? For ofs images you > have to call fsx with "-W -R" to disable mmap operations.
OFS afaik. Has this always been the case ? I'm sure I ran fsx without disabling mmap before on this image, and it used to pass.
Second bad news, with the -W -R options, it goes splat in an even more dramatic way.
Dave.
Unable to handle kernel NULL pointer dereference at virtual address 00000008 c01f91a7 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0010:[<c01f91a7>] Not tainted Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00010296 eax: c01f9198 ebx: 000006a0 ecx: cff6bea8 edx: 00000000 esi: c133acc0 edi: cd352524 ebp: cefb6c00 esp: cd0efe9c ds: 0018 es: 0018 ss: 0018 Process fsx (pid: 908, stackpage=cd0ef000) Stack: 000006a0 c133acc0 cd352524 cefb6c00 cd352524 c01f9a26 00000000 c133acc0 000006a0 000006a0 000186a0 00000000 cd352474 00000000 00000000 cd352474 00000000 000000cc c0123f01 00000002 c0123f60 cd352474 00000048 cd0eff74 Call Trace: [<c01f9a26>] [<c0123f01>] [<c0123f60>] [<c0144eab>] [<c01f7bdf>] [<c0144fe0>] [<c0131669>] [<c0131907>] [<c0106b73>] Code: 8b 42 08 31 d2 8b 48 08 8b 74 24 1c 8b 46 18 a9 08 00 00 00
>>EIP; c01f91a7 <affs_prepare_write_ofs+f/fc> <=====
>>eax; c01f9198 <affs_prepare_write_ofs+0/fc> >>ebx; 000006a0 Before first symbol >>ecx; cff6bea8 <END_OF_CODE+fabb96c/????> >>esi; c133acc0 <END_OF_CODE+e8a784/????> >>edi; cd352524 <END_OF_CODE+cea1fe8/????> >>ebp; cefb6c00 <END_OF_CODE+eb066c4/????> >>esp; cd0efe9c <END_OF_CODE+cc3f960/????>
Trace; c01f9a26 <affs_truncate+a6/375> Trace; c0123f01 <vmtruncate+9d/124> Trace; c0123f60 <vmtruncate+fc/124> Trace; c0144eab <inode_setattr+23/b0> Trace; c01f7bdf <affs_notify_change+77/94> Trace; c0144fe0 <notify_change+5c/dc> Trace; c0131669 <do_truncate+4d/64> Trace; c0131907 <sys_ftruncate+107/11c> Trace; c0106b73 <system_call+33/40>
Code; c01f91a7 <affs_prepare_write_ofs+f/fc> 00000000 <_EIP>: Code; c01f91a7 <affs_prepare_write_ofs+f/fc> <===== 0: 8b 42 08 mov 0x8(%edx),%eax <===== Code; c01f91aa <affs_prepare_write_ofs+12/fc> 3: 31 d2 xor %edx,%edx Code; c01f91ac <affs_prepare_write_ofs+14/fc> 5: 8b 48 08 mov 0x8(%eax),%ecx Code; c01f91af <affs_prepare_write_ofs+17/fc> 8: 8b 74 24 1c mov 0x1c(%esp,1),%esi Code; c01f91b3 <affs_prepare_write_ofs+1b/fc> c: 8b 46 18 mov 0x18(%esi),%eax Code; c01f91b6 <affs_prepare_write_ofs+1e/fc> f: a9 08 00 00 00 test $0x8,%eax
-- | Dave Jones. http://www.codemonkey.org.uk | SuSE Labs - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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