Russell King 4d62e81b60 ARM: kexec: fix oops after TLB are invalidated ... Giancarlo Ferrari reports the following oops while trying to use kexec: Unable to handle kernel paging request at virtual address 80112f38 pgd = fd7ef03e [80112f38] *pgd=0001141e(bad) Internal error: Oops: 80d [#1] PREEMPT SMP ARM ... This is caused by machine_kexec() trying to set the kernel text to be read/write, so it can poke values into the relocation code before copying it - and an interrupt occuring which changes the page tables. The subsequent writes then hit read-only sections that trigger a data abort resulting in the above oops. Fix this by copying the relocation code, and then writing the variables into the destination, thereby avoiding the need to make the kernel text read/write. Reported-by: Giancarlo Ferrari <giancarlo.ferrari89@gmail.com> Tested-by: Giancarlo Ferrari <giancarlo.ferrari89@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>		2021-02-05 10:23:29 +00:00
..
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
Makefile	ARM updates for 5.11:	2020-12-22 13:34:27 -08:00
arch_timer.c	ARM: 8913/1: arch_timer: include <asm/arch_timer.h>	2019-10-27 21:14:43 +00:00
armksyms.c	crypto: lib/sha1 - remove unnecessary includes of linux/cryptohash.h	2020-05-08 15:32:17 +10:00
asm-offsets.c	ARM: kexec: fix oops after TLB are invalidated	2021-02-05 10:23:29 +00:00
atags.h	ARM: 9011/1: centralize phys-to-virt conversion of DT/ATAGS address	2020-10-27 12:10:59 +00:00
atags_compat.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
atags_parse.c	ARM: 9011/1: centralize phys-to-virt conversion of DT/ATAGS address	2020-10-27 12:10:59 +00:00
atags_proc.c	ARM: 8973/1: Add missing newline terminator to kernel message	2020-05-07 20:53:10 +01:00
bios32.c	ARM/PCI: Remove unused fields from struct hw_pci	2020-09-18 22:39:09 +01:00
bugs.c	treewide: fix typos of SPDX-License-Identifier	2019-06-01 18:29:58 +02:00
cpuidle.c	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
crash_dump.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
debug.S	ARM: 9005/1: debug: Select flow control for all debug UARTs	2020-09-15 14:35:28 +01:00
devtree.c	ARM: 9011/1: centralize phys-to-virt conversion of DT/ATAGS address	2020-10-27 12:10:59 +00:00
dma-isa.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
dma.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
early_printk.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
efi.c	mm/pgtable: drop pgtable_t variable from pte_fn_t functions	2019-07-12 11:05:46 -07:00
elf.c	arm32/64/elf: Split READ_IMPLIES_EXEC from executable PT_GNU_STACK	2020-04-20 19:42:19 +02:00
entry-armv.S	ARM: 9030/1: entry: omit FP emulation for UND exceptions taken in kernel mode	2020-12-08 10:15:00 +00:00
entry-common.S	ARM updates for 5.11:	2020-12-22 13:34:27 -08:00
entry-ftrace.S	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
entry-header.S	ARM: uaccess: consolidate uaccess asm to asm/uaccess-asm.h	2020-05-03 17:30:24 +01:00
entry-v7m.S	arm: add support for TIF_NOTIFY_SIGNAL	2020-11-12 08:45:51 -07:00
fiq.c	arm: fix the flush_icache_range arguments in set_fiq_handler	2020-06-08 11:05:57 -07:00
fiqasm.S	…
ftrace.c	maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault	2020-06-17 10:57:41 -07:00
head-common.S	Merge branch 'devel-stable' into for-next	2020-12-21 11:19:26 +00:00
head-inflate-data.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
head-nommu.S	ARM: 8914/1: NOMMU: Fix exc_ret for XIP	2019-10-10 22:23:20 +01:00
head.S	Merge branch 'devel-stable' into for-next	2020-12-21 11:19:26 +00:00
hibernate.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194	2019-05-30 11:29:22 -07:00
hw_breakpoint.c	ARM: 8997/2: hw_breakpoint: Handle inexact watchpoint addresses	2020-09-15 14:35:24 +01:00
hyp-stub.S	Merge branch 'devel-stable' into for-next	2020-12-21 11:19:26 +00:00
insn.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
io.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
irq.c	ARM: Remove custom IRQ stat accounting	2020-09-17 16:37:28 +01:00
isa.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
iwmmxt.S	ARM: 9029/1: Make iwmmxt.S support Clang's integrated assembler	2020-12-08 10:14:59 +00:00
iwmmxt.h	ARM: 9029/1: Make iwmmxt.S support Clang's integrated assembler	2020-12-08 10:14:59 +00:00
jump_label.c	jump_label: move 'asm goto' support test to Kconfig	2019-01-06 09:46:51 +09:00
kgdb.c	maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault	2020-06-17 10:57:41 -07:00
machine_kexec.c	ARM: kexec: fix oops after TLB are invalidated	2021-02-05 10:23:29 +00:00
module-plts.c	ARM: 8910/1: fix missing declartion of module_frob_arch_sections	2019-10-27 21:14:38 +00:00
module.c	ARM: module: add support for place relative relocations	2020-10-28 16:59:43 +01:00
opcodes.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
paravirt.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
patch.c	arm/patch: Fix !MMU compile	2020-02-11 12:56:27 +01:00
perf_callchain.c	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
perf_event_v6.c	arm_pmu: Tidy up clear_event_idx call backs	2018-07-10 18:19:02 +01:00
perf_event_v7.c	ARM: 8873/1: perf: cleanup cppcheck shifting warning	2019-08-23 11:38:46 +01:00
perf_event_xscale.c	arm_pmu: Tidy up clear_event_idx call backs	2018-07-10 18:19:02 +01:00
perf_regs.c	perf/arch: Remove perf_sample_data::regs_user_copy	2020-11-09 18:12:34 +01:00
phys2virt.S	ARM: p2v: reduce p2v alignment requirement to 2 MiB	2020-10-28 16:59:43 +01:00
pj4-cp0.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
process.c	Merge branch 'regset.followup' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-12-15 19:09:44 -08:00
psci_smp.c	ARM: 8919/1: make unexported functions static	2019-10-31 16:58:52 +00:00
ptrace.c	arm: switch to ->regset_get()	2020-07-27 14:31:09 -04:00
reboot.c	ARM: Use reboot_cpu instead of hardcoding it to 0	2020-03-25 12:59:33 +01:00
reboot.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
relocate_kernel.S	ARM: kexec: fix oops after TLB are invalidated	2021-02-05 10:23:29 +00:00
return_address.c	ARM: 8918/2: only build return_address() if needed	2019-11-15 22:21:07 +00:00
setup.c	ARM: 9024/1: Drop useless cast of "u64" to "long long"	2020-11-12 14:53:21 +00:00
signal.c	ARM: ensure the signal page contains defined contents	2021-02-05 10:23:00 +00:00
signal.h	ARM: 8920/1: share get_signal_page from signal.c to process.c	2019-10-31 16:58:53 +00:00
sigreturn_codes.S	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
sleep.S	ARM: sleep.S: use PC-relative insn sequence for sleep_save_sp/mpidr_hash	2020-10-28 17:05:40 +01:00
smccc-call.S	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00
smp.c	A treewide cleanup of interrupt descriptor (ab)use with all sorts of racy	2020-12-24 13:50:23 -08:00
smp_scu.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
smp_tlb.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
smp_twd.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
stacktrace.c	ARM: 8992/1: Fix unwind_frame for clang-built kernels	2020-07-21 16:33:40 +01:00
suspend.c	mm: remove unneeded includes of <asm/pgalloc.h>	2020-08-07 11:33:26 -07:00
swp_emulate.c	mmap locking API: use coccinelle to convert mmap_sem rwsem call sites	2020-06-09 09:39:14 -07:00
sys_arm.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
sys_oabi-compat.c	ARM: compat: remove KERNEL_DS usage in sys_oabi_epoll_ctl()	2020-04-21 17:49:30 +01:00
tcm.c	ARM: 8925/1: tcm: include <asm/tcm.h> for missing declarations	2019-10-31 16:58:56 +00:00
thumbee.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333	2019-06-05 17:37:06 +02:00
time.c	ARM: rpc: use legacy_timer_tick	2020-10-30 21:57:05 +01:00
topology.c	ARM, sched/topology: Revert back to default scheduler topology	2020-08-19 10:49:47 +02:00
traps.c	maccess: make get_kernel_nofault() check for minimal type compatibility	2020-06-18 12:10:37 -07:00
unwind.c	ARM: 9026/1: unwind: remove old check for GCC <= 4.2	2020-12-08 10:13:59 +00:00
v7m.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
vdso.c	mm: forbid splitting special mappings	2020-12-15 12:13:41 -08:00
vmlinux-xip.lds.S	arm/build: Assert for unwanted sections	2020-09-01 10:03:18 +02:00
vmlinux.lds.S	arm/build: Always handle .ARM.exidx and .ARM.extab sections	2020-10-27 11:32:21 -07:00
xscale-cp0.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00