The following commit has been merged into the x86/urgent branch of tip: Commit-ID: a3e1c3bb24e2ff2927af5e30c2bebe669bb84196 Gitweb: https://git.kernel.org/tip/a3e1c3bb24e2ff2927af5e30c2bebe669bb84196 Author: Lianbo Jiang <lijiang@xxxxxxxxxx> AuthorDate: Tue, 04 Aug 2020 12:49:31 +08:00 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitterDate: Fri, 07 Aug 2020 01:32:00 +02:00 x86/crash: Correct the address boundary of function parameters Let's carefully handle the boundary of the function parameter to make sure that the arguments passed doesn't exceed the address range. Signed-off-by: Lianbo Jiang <lijiang@xxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> Acked-by: Dave Young <dyoung@xxxxxxxxxx> Link: https://lore.kernel.org/r/20200804044933.1973-2-lijiang@xxxxxxxxxx --- arch/x86/kernel/crash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index fd87b59..a8f3af2 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -230,7 +230,7 @@ static int elf_header_exclude_ranges(struct crash_mem *cmem) int ret = 0; /* Exclude the low 1M because it is always reserved */ - ret = crash_exclude_mem_range(cmem, 0, 1<<20); + ret = crash_exclude_mem_range(cmem, 0, (1<<20)-1); if (ret) return ret;
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