diff -drupN a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c --- a/arch/arm/kernel/kgdb.c 2018-08-06 17:23:04.000000000 +0300 +++ b/arch/arm/kernel/kgdb.c 2022-06-12 05:28:14.000000000 +0300 @@ -140,6 +140,8 @@ int kgdb_arch_handle_exception(int excep static int kgdb_brk_fn(struct pt_regs *regs, unsigned int instr) { + if (user_mode(regs)) + return -1; kgdb_handle_exception(1, SIGTRAP, 0, regs); return 0; @@ -147,6 +149,8 @@ static int kgdb_brk_fn(struct pt_regs *r static int kgdb_compiled_brk_fn(struct pt_regs *regs, unsigned int instr) { + if (user_mode(regs)) + return -1; compiled_break = 1; kgdb_handle_exception(1, SIGTRAP, 0, regs);