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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Sasha Levin <sashal@kernel.org>,
	agordeev@linux.ibm.com, svens@linux.ibm.com,
	ebiederm@xmission.com, iii@linux.ibm.com,
	linux-s390@vger.kernel.org
Subject: [PATCH AUTOSEL 5.16 17/30] s390/traps: improve panic message for translation-specification exception
Date: Wed,  6 Apr 2022 21:11:27 -0400	[thread overview]
Message-ID: <20220407011140.113856-17-sashal@kernel.org> (raw)
In-Reply-To: <20220407011140.113856-1-sashal@kernel.org>

From: Heiko Carstens <hca@linux.ibm.com>

[ Upstream commit f09354ffd84eef3c88efa8ba6df05efe50cfd16a ]

There are many different types of translation exceptions but only a
translation-specification exception leads to a kernel panic since it
indicates corrupted page tables, which must never happen.

Improve the panic message so it is a bit more obvious what this is about.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/s390/kernel/traps.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 2b780786fc68..ead721965b9f 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -142,10 +142,10 @@ static inline void do_fp_trap(struct pt_regs *regs, __u32 fpc)
 	do_trap(regs, SIGFPE, si_code, "floating point exception");
 }
 
-static void translation_exception(struct pt_regs *regs)
+static void translation_specification_exception(struct pt_regs *regs)
 {
 	/* May never happen. */
-	panic("Translation exception");
+	panic("Translation-Specification Exception");
 }
 
 static void illegal_op(struct pt_regs *regs)
@@ -374,7 +374,7 @@ static void (*pgm_check_table[128])(struct pt_regs *regs) = {
 	[0x0f]		= hfp_divide_exception,
 	[0x10]		= do_dat_exception,
 	[0x11]		= do_dat_exception,
-	[0x12]		= translation_exception,
+	[0x12]		= translation_specification_exception,
 	[0x13]		= special_op_exception,
 	[0x14]		= default_trap_handler,
 	[0x15]		= operand_exception,
-- 
2.35.1


  parent reply	other threads:[~2022-04-07  1:18 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-07  1:11 [PATCH AUTOSEL 5.16 01/30] gfs2: assign rgrp glock before compute_bitstructs Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 02/30] gfs2: cancel timed-out glock requests Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 03/30] gfs2: Switch lock order of inode and iopen glock Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 04/30] rtc: fix use-after-free on device removal Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 05/30] rtc: pcf2127: fix bug when reading alarm registers Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 06/30] kconfig: add fflush() before ferror() check Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 07/30] um: Cleanup syscall_handler_t definition/cast, fix warning Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 08/30] um: port_user: Improve error handling when port-helper is not found Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 09/30] Input: add bounds checking to input_set_capability() Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 10/30] Input: stmfts - fix reference leak in stmfts_input_open Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 11/30] nvme-pci: add quirks for Samsung X5 SSDs Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 12/30] gfs2: Disable page faults during lockless buffered reads Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 13/30] rtc: sun6i: Fix time overflow handling Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 14/30] crypto: stm32 - fix reference leak in stm32_crc_remove Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 15/30] crypto: x86/chacha20 - Avoid spurious jumps to other functions Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 16/30] ALSA: hda/realtek: Enable headset mic on Lenovo P360 Sasha Levin
2022-04-07  1:11 ` Sasha Levin [this message]
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 18/30] s390/pci: improve zpci_dev reference counting Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 19/30] vhost_vdpa: don't setup irq offloading when irq_num < 0 Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 20/30] tools/virtio: compile with -pthread Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 21/30] nvmet: use a private workqueue instead of the system workqueue Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 22/30] nvme-multipath: fix hang when disk goes live over reconnect Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 23/30] rtc: mc146818-lib: Fix the AltCentury for AMD platforms Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 24/30] fs: fix an infinite loop in iomap_fiemap Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 25/30] MIPS: lantiq: check the return value of kzalloc() Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 26/30] drbd: remove usage of list iterator variable after loop Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 27/30] platform/chrome: cros_ec_debugfs: detach log reader wq from devm Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 28/30] ARM: 9191/1: arm/stacktrace, kasan: Silence KASAN warnings in unwind_frame() Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 29/30] nilfs2: fix lockdep warnings in page operations for btree nodes Sasha Levin
2022-04-07  1:11 ` [PATCH AUTOSEL 5.16 30/30] nilfs2: fix lockdep warnings during disk space reclamation Sasha Levin

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