When initrd is present in the PFN right after the _end, bootmem bitmap(mapstart) overwrites it. So check for initrd_end in mapstart calculation. Signed-off-by: Ashok Kumar <ashoks@xxxxxxxxxxxx> --- This is seen after the commit "mips: fix start of free memory when using initrd" in git://git.linux-mips.org/pub/scm/ralf/upstream-sfr.git branch Tested the image on MIPS platform creating the above said scenario and initrd was corrupted. arch/mips/kernel/setup.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index 5342385..dfb8585 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -364,6 +364,11 @@ static void __init bootmem_init(void) } /* + * mapstart should be after initrd_end + */ + mapstart = max(mapstart, (unsigned long)PFN_UP(__pa(initrd_end))); + + /* * Initialize the boot-time allocator with low memory only. */ bootmap_size = init_bootmem_node(NODE_DATA(0), mapstart, -- 1.7.6
