From 537cd89484ab57ca38ae25d9557361c0815977d1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Barnab=C3=A1s=20P=C5=91cze?= Date: Tue, 15 Dec 2020 20:47:10 -0800 Subject: fault-injection: handle EI_ETYPE_TRUE MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit af3b854492f351d1 ("mm/page_alloc.c: allow error injection") introduced EI_ETYPE_TRUE, but did not extend * lib/error-inject.c:error_type_string(), and * kernel/fail_function.c:adjust_error_retval() to accommodate for this change. Handle EI_ETYPE_TRUE in both functions appropriately by * returning "TRUE" in error_type_string(), * adjusting the return value to true (1) in adjust_error_retval(). Furthermore, simplify the logic of handling EI_ETYPE_NULL in adjust_error_retval(). Link: https://lkml.kernel.org/r/njB1czX0ZgWPR9h61euHIBb5bEyePw9D4D2m3i5lc9Cl96P8Q1308dTcmsEZW7Vtz3Ifz4do-rOtSfuFTyGoEDYokkK2aUqBePVptzZEWfU=@protonmail.com Signed-off-by: Barnabás Pőcze Acked-by: Masami Hiramatsu Reviewed-by: Akinobu Mita Cc: "Naveen N. Rao" Cc: Anil S Keshavamurthy Cc: "David S. Miller" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/fail_function.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'kernel') diff --git a/kernel/fail_function.c b/kernel/fail_function.c index b0b1ad93fa95..60dc825ecc2b 100644 --- a/kernel/fail_function.c +++ b/kernel/fail_function.c @@ -37,9 +37,7 @@ static unsigned long adjust_error_retval(unsigned long addr, unsigned long retv) { switch (get_injectable_error_type(addr)) { case EI_ETYPE_NULL: - if (retv != 0) - return 0; - break; + return 0; case EI_ETYPE_ERRNO: if (retv < (unsigned long)-MAX_ERRNO) return (unsigned long)-EINVAL; @@ -48,6 +46,8 @@ static unsigned long adjust_error_retval(unsigned long addr, unsigned long retv) if (retv != 0 && retv < (unsigned long)-MAX_ERRNO) return (unsigned long)-EINVAL; break; + case EI_ETYPE_TRUE: + return 1; } return retv; -- cgit v1.2.3