When trapped on WARN_ON(), report_bug() is expected to return
BUG_TRAP_TYPE_WARN so the caller could increment NIP by 4 and continue.
The __builtin_constant_p() path of the PPC's WARN_ON() calls (indirectly)
__WARN_FLAGS() which has BUGFLAG_WARNING set, however the other branch
does not which makes report_bug() report a bug rather than a warning.
Fixes: 19d436268dde95389 ("debug: Add _ONCE() logic to report_bug()")
Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
---
Actually 19d436268dde95389 replaced __WARN_TAINT() with __WARN_FLAGS()
and lost BUGFLAG_TAINT() and this is not in the commit log so it is
unclear:
1) why
2) whether this particular patch should be doing
BUGFLAG_WARNING|BUGFLAG_TAINT(TAINT_WARN)
or
BUGFLAG_WARNING|(flags)
Any ideas? Thanks.
---
arch/powerpc/include/asm/bug.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/bug.h b/arch/powerpc/include/asm/bug.h
index f2c562a0a427..0151af6c2a50 100644
--- a/arch/powerpc/include/asm/bug.h
+++ b/arch/powerpc/include/asm/bug.h
@@ -104,7 +104,7 @@
"1: "PPC_TLNEI" %4,0\n" \
_EMIT_BUG_ENTRY \
: : "i" (__FILE__), "i" (__LINE__), \
- "i" (BUGFLAG_TAINT(TAINT_WARN)), \
+ "i" (BUGFLAG_WARNING|BUGFLAG_TAINT(TAINT_WARN)),\
"i" (sizeof(struct bug_entry)), \
"r" (__ret_warn_on)); \
} \
--
2.11.0
