Messages in this thread Patch in this message |  | | Subject | Re: 2.6.8.1-mm, programs crashing on x86_64 | From | Alexander Nyberg <> | Date | Fri, 20 Aug 2004 22:35:07 +0200 |
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> This does not happen in linus -bk. I noticed it happens in > 2.6.8-mm2 also, but not sure about earlier. I'll try some earlier > -mm's and if noone knows what could be it I'll do a binary search. > > Must be quite newly introduced though... > > boxen:~# chroot /mnt/store/x86/ bash > bash[911] bad frame in 32bit signal deliver frame:00000000ffffd220 rip:556605d6 rsp:ffffd500 orax:ffffffffffffffff > bash[910] bad frame in 32bit signal deliver frame:00000000ffffd220 rip:556605d6 rsp:ffffd500 orax:ffffffffffffffff > bash[910]: segfault at 00000000ffffd51c rip 00000000556605d6 rsp 00000000ffffd500 error 7 > bash[911]: segfault at 00000000ffffd51c rip 00000000556605d6 rsp 00000000ffffd500 error 7 >
I forgot to tell you what environment I'm in; debian in a pure 64-bit environment. I've got a chroot at /mnt/store/x86 where I compile kernels for x86 boxes.
.config snippet: CONFIG_BINFMT_ELF=y CONFIG_BINFMT_MISC=y CONFIG_IA32_EMULATION=y CONFIG_IA32_AOUT=y CONFIG_COMPAT=y CONFIG_SYSVIPC_COMPAT=y CONFIG_UID16=y
Anyway, found the trouble-maker. Reverting below patch fixes issues.
diff -uprN linux-2.6.8-rc3-mm1/include/asm-x86_64/processor.h linux-2.6.8-rc3-mm2/include/asm-x86_64/processor.h --- linux-2.6.8-rc3-mm1/include/asm-x86_64/processor.h 2004-08-20 21:10:01.739109232 +0200 +++ linux-2.6.8-rc3-mm2/include/asm-x86_64/processor.h 2004-08-20 21:09:52.095575272 +0200 @@ -164,9 +164,9 @@ static inline void clear_in_cr4 (unsigne /* - * User space process size: 512GB - 1GB (default). + * User space process size. */ -#define TASK_SIZE (0x0000007fc0000000UL) +#define TASK_SIZE (test_thread_flag(TIF_IA32) ? 0xffffd000 : 0x0000007fc0000000UL) /* This decides where the kernel will search for a free chunk of vm * space during mmap's.
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