[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH v2 3/3] x86: fix .brk attribute in linker script
On Thu, Jun 23, 2022 at 11:46:08AM +0200, Juergen Gross wrote: > Commit e32683c6f7d2 ("x86/mm: Fix RESERVE_BRK() for older binutils") > added the "NOLOAD" attribute to the .brk section as a "failsafe" > measure. > > Unfortunately this leads to the linker no longer covering the .brk > section in a program header, resulting in the kernel loader not knowing > that the memory for the .brk section must be reserved. > > This has led to crashes when loading the kernel as PV dom0 under Xen, > but other scenarios could be hit by the same problem (e.g. in case an > uncompressed kernel is used and the initrd is placed directly behind > it). > > So drop the "NOLOAD" attribute. This has been verified to correctly > cover the .brk section by a program header of the resulting ELF file. > > Fixes: e32683c6f7d2 ("x86/mm: Fix RESERVE_BRK() for older binutils") > Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Reviewed-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> -- Josh
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