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| author | Barnabás Pőcze <pobrn@protonmail.com> | 2020-12-16 07:47:10 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-16 09:46:19 +0300 |
| commit | 537cd89484ab57ca38ae25d9557361c0815977d1 (patch) | |
| tree | 85aa2f2000eb796987d3f432655212189b216ee1 /kernel/fail_function.c | |
| parent | 40247e55ba099067bf160332365ed78b5aeb62da (diff) | |
| download | linux-537cd89484ab57ca38ae25d9557361c0815977d1.tar.xz | |
fault-injection: handle EI_ETYPE_TRUE
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 <pobrn@protonmail.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/fail_function.c')
| -rw-r--r-- | kernel/fail_function.c | 6 |
1 files changed, 3 insertions, 3 deletions
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; |