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Commit 18d6522b authored by Atsuo Igarashi's avatar Atsuo Igarashi Committed by Jason Wessel
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kgdb: could not write to the last of valid memory with kgdb 



On the ARM architecture, kgdb will crash the kernel if the last byte
of valid memory is written due to a flush_icache_range flushing
beyond the memory boundary.

Signed-off-by: default avatarAtsuo Igarashi <atsuo_igarashi@tripeaks.co.jp>
Signed-off-by: default avatarJason Wessel <jason.wessel@windriver.com>
parent 6ef190cc

kernel/kgdb.c

+1 −1
Original line number Diff line number Diff line
@@ -488,7 +488,7 @@ static int write_mem_msg(int binary) 
		if (err)

			return err;

		if (CACHE_FLUSH_IS_SAFE)

			flush_icache_range(addr, addr + length + 1);

			flush_icache_range(addr, addr + length);

		return 0;

	}