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linux/arch/mips/kernel
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Alexander Lobakin 69e976831c MIPS: relocatable: fix possible boot hangup with KASLR enabled 
LLVM-built Linux triggered a boot hangup with KASLR enabled.

arch/mips/kernel/relocate.c:get_random_boot() uses linux_banner,
which is a string constant, as a random seed, but accesses it
as an array of unsigned long (in rotate_xor()).
When the address of linux_banner is not aligned to sizeof(long),
such access emits unaligned access exception and hangs the kernel.

Use PTR_ALIGN() to align input address to sizeof(long) and also
align down the input length to prevent possible access-beyond-end.

Fixes: 405bc8fd12f5 ("MIPS: Kernel: Implement KASLR using CONFIG_RELOCATABLE")
Cc: stable@vger.kernel.org # 4.7+
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-13 10:59:04 +01:00
..
syscalls
epoll: fix compat syscall wire up of epoll_pwait2
2020-12-20 10:01:38 -08:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
asm-offsets.c
MIPS: Remove struct task_struct fpu state when CONFIG_MIPS_FP_SUPPORT=n
2018-11-09 10:23:19 -08:00
binfmt_elfn32.c
MIPS: Fix malformed NT_FILE and NT_SIGINFO in 32bit coredumps
2020-12-28 23:26:17 +01:00
binfmt_elfo32.c
MIPS: Fix malformed NT_FILE and NT_SIGINFO in 32bit coredumps
2020-12-28 23:26:17 +01:00
bmips_5xxx_init.S
MIPS: BCM5xxx: Remove dead init_fpu code
2018-11-08 11:20:57 -08:00
bmips_vec.S
MIPS: BMIPS: Add Whirlwind (BMIPS5200) initialization code
2016-05-09 12:00:01 +02:00
branch.c
MIPS: kernel: include probes-common.h header in branch.c
2020-09-21 22:14:24 +02:00
cacheinfo.c
mips: cacheinfo: report shared CPU map
2019-11-26 10:33:08 -08:00
cevt-bcm1480.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
cevt-ds1287.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
cevt-gt641xx.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
cevt-r4k.c
mips: cevt-r4k: Update the r4k-clockevent frequency in sync with CPU
2020-05-22 09:14:32 +02:00
cevt-sb1250.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
cevt-txx9.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
cmpxchg.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cps-vec-ns16550.S
mips: Add CPS_NS16550_WIDTH config
2020-05-22 09:12:52 +02:00
cps-vec.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cpu-probe.c
MIPS: cpu-probe: remove MIPS_CPU_BP_GHIST option bit
2020-10-12 12:05:40 +02:00
cpu-r3k-probe.c
MIPS: cpu-probe: introduce exclusive R3k CPU probe
2020-10-12 12:05:16 +02:00
crash_dump.c
mm: remove include/linux/bootmem.h
2018-10-31 08:54:16 -07:00
crash.c
mm: remove include/linux/bootmem.h
2018-10-31 08:54:16 -07:00
csrc-bcm1480.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
csrc-ioasic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
csrc-r4k.c
mips: csrc-r4k: Mark R4K timer as unstable if CPU freq changes
2020-05-22 09:14:06 +02:00
csrc-sb1250.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
early_printk_8250.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
early_printk.c
mips: unify prom_putchar() declarations
2018-07-17 09:40:17 -07:00
elf.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
entry.S
mips: Add MIPS Release 5 support
2020-05-22 09:09:01 +02:00
fpu-probe.c
MIPS: cpu-probe: move fpu probing/handling into its own file
2020-10-12 12:04:50 +02:00
fpu-probe.h
MIPS: cpu-probe: move fpu probing/handling into its own file
2020-10-12 12:04:50 +02:00
ftrace.c
MIPS: ftrace: Remove redundant #ifdef CONFIG_DYNAMIC_FTRACE
2020-08-17 13:00:24 +02:00
genex.S
MIPS: handle Loongson-specific GSExc exception
2020-07-31 17:52:47 +02:00
gpio_txx9.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
head.S
MIPS: Loongson-3: Enable COP2 usage in kernel
2020-09-21 22:15:03 +02:00
i8253.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
idle.c
sched/idle: Fix arch_cpu_idle() vs tracing
2020-11-24 16:47:35 +01:00
irq_txx9.c
…
irq-gt641xx.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
irq-msc01.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-rm7000.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq.c
MIPS: irq: Allocate accurate order pages for irq stack
2019-02-19 12:45:01 -08:00
jump_label.c
MIPS: jump_label: Use compact branches for >= r6
2019-04-09 16:21:30 -07:00
kgdb.c
MIPS: KGDB: fix kgdb support for SMP platforms.
2019-03-28 11:35:58 -07:00
kprobes.c
mips: kprobes: Use generic kretprobe trampoline handler
2020-09-08 11:52:33 +02:00
linux32.c
MIPS: Delete unused code in linux32.c
2018-08-01 13:20:27 -07:00
machine_kexec.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
Makefile
MIPS: cpu-probe: introduce exclusive R3k CPU probe
2020-10-12 12:05:16 +02:00
mcount.S
mips: ftrace: fix static function graph tracing
2018-06-19 15:00:12 -07:00
mips-cm.c
mips: cm: add missing iounmap() on error in mips_cm_probe()
2020-11-06 11:33:11 +01:00
mips-cpc.c
remove ioremap_nocache and devm_ioremap_nocache
2020-01-06 09:45:59 +01:00
mips-mt-fpaff.c
MIPS: Use rcu to lookup a task in mipsmt_sys_sched_setaffinity()
2020-09-03 10:13:43 +02:00
mips-mt.c
MIPS: MT: Remove norps command line parameter
2018-11-26 22:49:14 -08:00
mips-r2-to-r6-emul.c
MIPS: Use fallthrough for arch/mips
2020-05-07 11:55:47 +02:00
module.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
octeon_switch.S
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
perf_event_mipsxx.c
MIPS: perf: Fix wrong check condition of Loongson event IDs
2020-09-01 13:52:33 +02:00
perf_event.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pm-cps.c
MIPS: barrier: Add __SYNC() infrastructure
2019-10-07 09:42:17 -07:00
pm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
probes-common.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
proc.c
mips: Add MIPS Release 5 support
2020-05-22 09:09:01 +02:00
process.c
smp: Cleanup smp_call_function*()
2020-11-24 16:47:49 +01:00
prom.c
MIPS: replace add_memory_region with memblock
2020-10-12 12:01:36 +02:00
ptrace32.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
ptrace.c
mips: switch to ->regset_get()
2020-07-27 14:31:08 -04:00
r4k_fpu.S
mips: Add MIPS Release 5 support
2020-05-22 09:09:01 +02:00
r4k_switch.S
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
r4k-bugs64.c
MIPS: r4k-bugs64: Drop CONFIG_CPU_MIPSR6 checks
2019-10-07 09:38:54 -07:00
r2300_fpu.S
MIPS: Simplify FP context initialization
2018-11-09 10:23:13 -08:00
r2300_switch.S
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
relocate_kernel.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
relocate.c
MIPS: relocatable: fix possible boot hangup with KASLR enabled
2021-01-13 10:59:04 +01:00
reset.c
MIPS: Hang more efficiently on halt/powerdown/restart
2018-03-09 11:22:43 +00:00
rtlx-cmp.c
MIPS: APRP: Fix an issue when device_create() fails.
2014-08-01 17:30:35 +02:00
rtlx-mt.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
rtlx.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
scall32-o32.S
mips: remove nargs from __SYSCALL
2019-07-30 10:50:30 -07:00
scall64-n32.S
mips: remove nargs from __SYSCALL
2019-07-30 10:50:30 -07:00
scall64-n64.S
mips: remove nargs from __SYSCALL
2019-07-30 10:50:30 -07:00
scall64-o32.S
MIPS: asm: Rename some macros to avoid build errors
2020-05-07 13:20:05 +02:00
segment.c
mips: kernel: no need to check return value of debugfs_create functions
2019-01-22 11:17:20 -08:00
setup.c
MIPS: Move memblock_dump_all() to the end of setup_arch()
2020-12-04 13:01:57 +01:00
signal32.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
signal_n32.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2019-07-08 21:48:15 -07:00
signal_o32.c
signal: Remove task parameter from force_sig
2019-05-27 09:36:28 -05:00
signal-common.h
MIPS: Save MSA extended context around signals
2015-09-03 12:07:59 +02:00
signal.c
mips: add support for TIF_NOTIFY_SIGNAL
2020-11-09 08:16:55 -07:00
smp-bmips.c
MIPS: No need to check CPU 0 in {loongson3,bmips,octeon}_cpu_disable()
2020-11-27 10:38:12 +01:00
smp-cmp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 182
2019-05-30 11:29:20 -07:00
smp-cps.c
MIPS: SMP-CPS: Add support for irq migration when CPU offline
2020-12-04 13:01:47 +01:00
smp-mt.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 182
2019-05-30 11:29:20 -07:00
smp-up.c
MIPS: SMP: Allow boot_secondary SMP op to return errors
2017-08-30 00:57:27 +02:00
smp.c
smp: Cleanup smp_call_function*()
2020-11-24 16:47:49 +01:00
spinlock_test.c
mips: kernel: no need to check return value of debugfs_create functions
2019-01-22 11:17:20 -08:00
spram.c
mips: Add CONFIG/CONFIG6/Cause reg fields macro
2020-05-22 09:12:22 +02:00
stacktrace.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
sync-r4k.c
MIPS: sync-r4k: do slave counter synchronization with disabled HW interrupts
2020-01-22 10:16:18 -08:00
syscall.c
MIPS: Convert R10000_LLSC_WAR info a config option
2020-09-07 22:24:27 +02:00
sysrq.c
MIPS: constify sysrq_key_op
2020-05-15 14:53:19 +02:00
time.c
mips: Add udelay lpj numbers adjustment
2020-05-22 09:13:32 +02:00
topology.c
MIPS: CPU#0 is not hotpluggable
2020-07-26 10:18:35 +02:00
traps.c
MIPS updates for v5.10:
2020-10-16 12:40:55 -07:00
unaligned.c
uaccess: add force_uaccess_{begin,end} helpers
2020-08-12 10:57:59 -07:00
uprobes.c
MIPS: uprobes: remove set but not used variable 'epc'
2019-05-29 13:20:30 -07:00
vdso.c
MIPS: vdso: Use vma page protection for remapping
2020-11-19 13:26:38 +01:00
vmlinux.lds.S
vmlinux.lds.h: Split ELF_DETAILS from STABS_DEBUG
2020-09-01 09:50:35 +02:00
vpe-cmp.c
…
vpe-mt.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
vpe.c
MIPS: VPE: Fix a double free and a memory leak in 'release_vpe()'
2020-02-15 12:44:03 -08:00
watch.c
MIPS: Use fallthrough for arch/mips
2020-05-07 11:55:47 +02:00