From 18906ff9af6517c20763ed63dab602a4150794f7 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Tue, 13 Sep 2022 11:17:29 +0100 Subject: [PATCH] arm64: die(): pass 'err' as long Recently, we reworked a lot of code to consistentlt pass ESR_ELx as a 64-bit quantity. However, we missed that this can be passed into die() and __die() as the 'err' parameter where it is truncated to a 32-bit int. As notify_die() already takes 'err' as a long, this patch changes die() and __die() to also take 'err' as a long, ensuring that the full value of ESR_ELx is retained. At the same time, die() is updated to consistently log 'err' as a zero-padded 64-bit quantity. Subsequent patches will pass the ESR_ELx value to die() for a number of exceptions. Signed-off-by: Mark Rutland Reviewed-by: Mark Brown Reviewed-by: Anshuman Khandual Cc: Alexandru Elisei Cc: Amit Daniel Kachhap Cc: James Morse Cc: Will Deacon Link: https://lore.kernel.org/r/20220913101732.3925290-3-mark.rutland@arm.com Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/system_misc.h | 2 +- arch/arm64/kernel/traps.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm64/include/asm/system_misc.h b/arch/arm64/include/asm/system_misc.h index 0eb7709422e2..c34344256762 100644 --- a/arch/arm64/include/asm/system_misc.h +++ b/arch/arm64/include/asm/system_misc.h @@ -18,7 +18,7 @@ struct pt_regs; -void die(const char *msg, struct pt_regs *regs, int err); +void die(const char *msg, struct pt_regs *regs, long err); struct siginfo; void arm64_notify_die(const char *str, struct pt_regs *regs, diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index eac4f7a83175..da8ffef6f7c5 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -180,12 +180,12 @@ static void dump_kernel_instr(const char *lvl, struct pt_regs *regs) #define S_SMP " SMP" -static int __die(const char *str, int err, struct pt_regs *regs) +static int __die(const char *str, long err, struct pt_regs *regs) { static int die_counter; int ret; - pr_emerg("Internal error: %s: %x [#%d]" S_PREEMPT S_SMP "\n", + pr_emerg("Internal error: %s: %016lx [#%d]" S_PREEMPT S_SMP "\n", str, err, ++die_counter); /* trap and error numbers are mostly meaningless on ARM */ @@ -206,7 +206,7 @@ static DEFINE_RAW_SPINLOCK(die_lock); /* * This function is protected against re-entrancy. */ -void die(const char *str, struct pt_regs *regs, int err) +void die(const char *str, struct pt_regs *regs, long err) { int ret; unsigned long flags;