Hi,
I just built a 2.6.20 kernel with CONFIG_RELOCATABLE=y. While going
through relocation entries for .smp_locks section, I see some relocation
entries present w.r.t to init section also. Below I am pasting just
few of them.
Relocation section '.rel.smp_locks' at offset 0x6079c8 contains 4662 entries:
Offset Info Type Sym.Value Sym. Name
c058e000 00001201 R_386_32 c0593000 .init.text
c058e004 00001201 R_386_32 c0593000 .init.text
c058e008 00001201 R_386_32 c0593000 .init.text
So what happens if somebody builds a SMP kernel and runs on a UP machine.
Later it hotplus one CPU. Then kernel will switch to SMP mode. Looking
at the code it looks like it will also try to patch init text which is
no more there and will corrupt something else?
Am I missing something?
MODPOST whitelists the references from .smp_locks section to .init.text,
hence these warnings are not displayed during compilation.
Thanks
Vivek
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
