From: Peter Maydell <peter.mayd...@linaro.org>
Coverity notes that we forgot to check the error return from
lock_user() in one place in the handling of the UHI_plog semihosting
call. Add the missing error handling.
report_fault() is rather brutal in that it will call abort(), but
this is the same error-handling used in the rest of this file.
Resolves: Coverity CID 1490684
Fixes: ea4210600db3c5 ("target/mips: Avoid qemu_semihosting_log_out for
UHI_plog")
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org>
Message-Id: <20220719191737.384744-1-peter.mayd...@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
target/mips/tcg/sysemu/mips-semi.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/target/mips/tcg/sysemu/mips-semi.c
b/target/mips/tcg/sysemu/mips-semi.c
index 5fb1ad9092..85f0567a7f 100644
--- a/target/mips/tcg/sysemu/mips-semi.c
+++ b/target/mips/tcg/sysemu/mips-semi.c
@@ -321,6 +321,9 @@ void mips_semihosting(CPUMIPSState *env)
if (use_gdb_syscalls()) {
addr = gpr[29] - str->len;
p = lock_user(VERIFY_WRITE, addr, str->len, 0);
+ if (!p) {
+ report_fault(env);
+ }
memcpy(p, str->str, str->len);
unlock_user(p, addr, str->len);
semihost_sys_write(cs, uhi_cb, 2, addr, str->len);
--
2.36.1
