From: Joanne Koong Date: Mon, 21 Mar 2022 18:58:02 +0000 (-0700) Subject: bpf: Fix warning for cast from restricted gfp_t in verifier X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=d56c9fe6a06820d5ef8188d96bf4345c7bdba249;p=uclinux-h8%2Flinux.git bpf: Fix warning for cast from restricted gfp_t in verifier This fixes the sparse warning reported by the kernel test robot: kernel/bpf/verifier.c:13499:47: sparse: warning: cast from restricted gfp_t kernel/bpf/verifier.c:13501:47: sparse: warning: cast from restricted gfp_t This fix can be verified locally by running: 1) wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O make.cross 2) chmod +x ~/bin/make.cross 3) COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 ./make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' Fixes: b00fa38a9c1c ("bpf: Enable non-atomic allocations in local storage") Reported-by: kernel test robot Signed-off-by: Joanne Koong Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20220321185802.824223-1-joannekoong@fb.com --- diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 571ccd7f04eb..d175b70067b3 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -13496,9 +13496,9 @@ static int do_misc_fixups(struct bpf_verifier_env *env) insn->imm == BPF_FUNC_sk_storage_get || insn->imm == BPF_FUNC_inode_storage_get) { if (env->prog->aux->sleepable) - insn_buf[0] = BPF_MOV64_IMM(BPF_REG_5, (__s32)GFP_KERNEL); + insn_buf[0] = BPF_MOV64_IMM(BPF_REG_5, (__force __s32)GFP_KERNEL); else - insn_buf[0] = BPF_MOV64_IMM(BPF_REG_5, (__s32)GFP_ATOMIC); + insn_buf[0] = BPF_MOV64_IMM(BPF_REG_5, (__force __s32)GFP_ATOMIC); insn_buf[1] = *insn; cnt = 2;