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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 5.15 14/27] s390/traps: improve panic message for translation-specification exception
Date: Wed,  6 Apr 2022 21:12:44 -0400	[thread overview]
Message-ID: <20220407011257.114287-14-sashal@kernel.org> (raw)
In-Reply-To: <20220407011257.114287-1-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 12d28ff5281f..4044826d72ae 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  1:21 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-07  1:12 [PATCH AUTOSEL 5.15 01/27] gfs2: assign rgrp glock before compute_bitstructs Sasha Levin
2022-04-07  1:12 ` [Cluster-devel] " Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 02/27] rtc: fix use-after-free on device removal Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 03/27] rtc: pcf2127: fix bug when reading alarm registers Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 04/27] um: Cleanup syscall_handler_t definition/cast, fix warning Sasha Levin
2022-04-07  1:12   ` Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 05/27] um: port_user: Improve error handling when port-helper is not found Sasha Levin
2022-04-07  1:12   ` Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 06/27] Input: add bounds checking to input_set_capability() Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 07/27] Input: stmfts - fix reference leak in stmfts_input_open Sasha Levin
2022-04-07  1:12   ` Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 08/27] nvme-pci: add quirks for Samsung X5 SSDs Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 09/27] gfs2: Disable page faults during lockless buffered reads Sasha Levin
2022-04-07  1:12   ` [Cluster-devel] " Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 10/27] rtc: sun6i: Fix time overflow handling Sasha Levin
2022-04-07  1:12   ` Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 11/27] crypto: stm32 - fix reference leak in stm32_crc_remove Sasha Levin
2022-04-07  1:12   ` Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 12/27] crypto: x86/chacha20 - Avoid spurious jumps to other functions Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 13/27] ALSA: hda/realtek: Enable headset mic on Lenovo P360 Sasha Levin
2022-04-07  1:12   ` Sasha Levin
2022-04-07  1:12 ` Sasha Levin [this message]
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 15/27] s390/pci: improve zpci_dev reference counting Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 16/27] vhost_vdpa: don't setup irq offloading when irq_num < 0 Sasha Levin
2022-04-07  1:12   ` Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 17/27] tools/virtio: compile with -pthread Sasha Levin
2022-04-07  1:12   ` Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 18/27] nvmet: use a private workqueue instead of the system workqueue Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 19/27] nvme-multipath: fix hang when disk goes live over reconnect Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 20/27] rtc: mc146818-lib: Fix the AltCentury for AMD platforms Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 21/27] fs: fix an infinite loop in iomap_fiemap Sasha Levin
2022-04-07 11:28   ` Amir Goldstein
2022-04-07 11:30     ` Amir Goldstein
2022-05-17 17:33       ` Amir Goldstein
2022-05-18 12:24         ` Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 22/27] MIPS: lantiq: check the return value of kzalloc() Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 23/27] drbd: remove usage of list iterator variable after loop Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 24/27] platform/chrome: cros_ec_debugfs: detach log reader wq from devm Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 25/27] ARM: 9191/1: arm/stacktrace, kasan: Silence KASAN warnings in unwind_frame() Sasha Levin
2022-04-07  1:12   ` Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 26/27] nilfs2: fix lockdep warnings in page operations for btree nodes Sasha Levin
2022-04-07  1:12   ` Sasha Levin
2022-04-07  1:12 ` [PATCH AUTOSEL 5.15 27/27] nilfs2: fix lockdep warnings during disk space reclamation Sasha Levin
2022-04-07  1:12   ` Sasha Levin

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