From: Christophe Leroy christophe.leroy@csgroup.eu
commit 01fcac8e4dfc112f420dcaeb70056a74e326cacf upstream.
single_step_exception() is called by emulate_single_step() which is called from (at least) alignment exception() handler and program_check_exception() handler.
Redefine it as a regular __single_step_exception() which is called by both single_step_exception() handler and emulate_single_step() function.
Fixes: 3a96570ffceb ("powerpc: convert interrupt handlers to use wrappers") Cc: stable@vger.kernel.org # v5.12+ Signed-off-by: Christophe Leroy christophe.leroy@csgroup.eu Reviewed-by: Nicholas Piggin npiggin@gmail.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/aed174f5cbc06f2cf95233c071d8aac948e46043.162861192... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/powerpc/kernel/traps.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
--- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -1103,7 +1103,7 @@ DEFINE_INTERRUPT_HANDLER(RunModeExceptio _exception(SIGTRAP, regs, TRAP_UNK, 0); }
-DEFINE_INTERRUPT_HANDLER(single_step_exception) +static void __single_step_exception(struct pt_regs *regs) { clear_single_step(regs); clear_br_trace(regs); @@ -1120,6 +1120,11 @@ DEFINE_INTERRUPT_HANDLER(single_step_exc _exception(SIGTRAP, regs, TRAP_TRACE, regs->nip); }
+DEFINE_INTERRUPT_HANDLER(single_step_exception) +{ + __single_step_exception(regs); +} + /* * After we have successfully emulated an instruction, we have to * check if the instruction was being single-stepped, and if so, @@ -1129,7 +1134,7 @@ DEFINE_INTERRUPT_HANDLER(single_step_exc static void emulate_single_step(struct pt_regs *regs) { if (single_stepping(regs)) - single_step_exception(regs); + __single_step_exception(regs); }
static inline int __parse_fpscr(unsigned long fpscr)