Satheesh Rajendran b710d27bf7 powerpc/pseries/svm: Fix incorrect check for shared_lppaca_size ... Early secure guest boot hits the below crash while booting with vcpus numbers aligned with page boundary for PAGE size of 64k and LPPACA size of 1k i.e 64, 128 etc. Partition configured for 64 cpus. CPU maps initialized for 1 thread per core ------------[ cut here ]------------ kernel BUG at arch/powerpc/kernel/paca.c:89! Oops: Exception in kernel mode, sig: 5 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries This is due to the BUG_ON() for shared_lppaca_total_size equal to shared_lppaca_size. Instead the code should only BUG_ON() if we have exceeded the total_size, which indicates we've overflowed the array. Fixes: bd104e6db6 ("powerpc/pseries/svm: Use shared memory for LPPACA structures") Cc: stable@vger.kernel.org # v5.4+ Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> [mpe: Reword change log to clarify we're fixing not removing the check] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200619070113.16696-1-sathnaga@linux.vnet.ibm.com		2020-07-14 21:57:26 +10:00
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ptrace
syscalls
trace	maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault	2020-06-17 10:57:41 -07:00
vdso32
vdso64
.gitignore
align.c
asm-offsets.c	mm: don't include asm/pgtable.h if linux/mm.h is already included	2020-06-09 09:39:13 -07:00
audit.c
btext.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
cacheinfo.c
cacheinfo.h
compat_audit.c
cpu_setup_6xx.S
cpu_setup_44x.S
cpu_setup_fsl_booke.S
cpu_setup_pa6t.S
cpu_setup_power.S
cpu_setup_ppc970.S
cputable.c
crash_dump.c
dawr.c
dbell.c
dma-iommu.c
dma-mask.c
dma-swiotlb.c
dt_cpu_ftrs.c
early_32.c
eeh_cache.c
eeh_dev.c
eeh_driver.c
eeh_event.c
eeh_pe.c
eeh_sysfs.c
eeh.c
entry_32.S
entry_64.S
epapr_hcalls.S
epapr_paravirt.c
exceptions-64e.S
exceptions-64s.S	powerpc/64s/exception: Fix 0x1500 interrupt handler crash	2020-07-08 20:41:06 +10:00
fadump.c
firmware.c
fpu.S	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
fsl_booke_entry_mapping.S
head_8xx.S	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
head_32.h
head_32.S	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
head_40x.S	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
head_44x.S	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
head_64.S
head_booke.h
head_fsl_booke.S	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
hw_breakpoint.c
idle_6xx.S
idle_book3e.S
idle_book3s.S
idle_e500.S
idle.c
ima_arch.c
io-workarounds.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
io.c
iomap.c
iommu.c
irq.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
isa-bridge.c	powerpc: remove __ioremap_at and __iounmap_at	2020-06-02 10:59:10 -07:00
jump_label.c
kgdb.c	maccess: make get_kernel_nofault() check for minimal type compatibility	2020-06-18 12:10:37 -07:00
kprobes-ftrace.c
kprobes.c	maccess: rename probe_kernel_address to get_kernel_nofault	2020-06-18 11:14:40 -07:00
kvm_emul.S
kvm.c
l2cr_6xx.S
legacy_serial.c
Makefile
mce_power.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
mce.c
misc_32.S
misc_64.S
misc.S
module_32.c
module_64.c	maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault	2020-06-17 10:57:41 -07:00
module.c
module.lds
msi.c
note.S
nvram_64.c	powerpc updates for 5.8	2020-06-05 12:39:30 -07:00
of_platform.c
optprobes_head.S
optprobes.c
paca.c	powerpc/pseries/svm: Fix incorrect check for shared_lppaca_size	2020-07-14 21:57:26 +10:00
pci_32.c
pci_64.c	powerpc updates for 5.8	2020-06-05 12:39:30 -07:00
pci_dn.c
pci_of_scan.c
pci-common.c
pci-hotplug.c
pmc.c
ppc32.h
ppc_save_regs.S
proc_powerpc.c
process.c	powerpc fixes for 5.8 #3	2020-06-21 10:02:53 -07:00
prom_init_check.sh
prom_init.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
prom_parse.c
prom.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
reloc_32.S
reloc_64.S
rtas_flash.c
rtas_pci.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
rtas-proc.c
rtas-rtc.c
rtas.c
rtasd.c
secure_boot.c
security.c
secvar-ops.c
secvar-sysfs.c
setup_32.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
setup_64.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
setup-common.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
setup.h
signal_32.c	mm: don't include asm/pgtable.h if linux/mm.h is already included	2020-06-09 09:39:13 -07:00
signal_64.c	mm: don't include asm/pgtable.h if linux/mm.h is already included	2020-06-09 09:39:13 -07:00
signal.c
signal.h
smp-tbsync.c
smp.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
stacktrace.c	kernel: rename show_stack_loglvl() => show_stack()	2020-06-09 09:39:13 -07:00
suspend.c
swsusp_32.S
swsusp_64.c
swsusp_asm64.S
swsusp_booke.S
swsusp.c
sys_ppc32.c
syscall_64.c
syscalls.c
sysfs.c
systbl_chk.sh
systbl.S
tau_6xx.c
time.c
tm.S
traps.c	mm: don't include asm/pgtable.h if linux/mm.h is already included	2020-06-09 09:39:13 -07:00
ucall.S
udbg_16550.c
udbg.c
uprobes.c
vdso.c	mmap locking API: use coccinelle to convert mmap_sem rwsem call sites	2020-06-09 09:39:14 -07:00
vecemu.c
vector.S
vmlinux.lds.S	powerpc updates for 5.8	2020-06-05 12:39:30 -07:00
watchdog.c