Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.7 329/376] powerpc/fadump: Account for memory_limit while reserving memory | Date | Fri, 19 Jun 2020 16:34:07 +0200 |
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From: Hari Bathini <hbathini@linux.ibm.com>
commit 9a2921e5baca1d25eb8d21f21d1e90581a6d0f68 upstream.
If the memory chunk found for reserving memory overshoots the memory limit imposed, do not proceed with reserving memory. Default behavior was this until commit 140777a3d8df ("powerpc/fadump: consider reserved ranges while reserving memory") changed it unwittingly.
Fixes: 140777a3d8df ("powerpc/fadump: consider reserved ranges while reserving memory") Cc: stable@vger.kernel.org Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/159057266320.22331.6571453892066907320.stgit@hbathini.in.ibm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/powerpc/kernel/fadump.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/kernel/fadump.c +++ b/arch/powerpc/kernel/fadump.c @@ -603,7 +603,7 @@ int __init fadump_reserve_mem(void) */ base = fadump_locate_reserve_mem(base, size); - if (!base) { + if (!base || (base + size > mem_boundary)) { pr_err("Failed to find memory chunk for reservation!\n"); goto error_out; }
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