Aneesh Kumar K.V 6f4679b956 powerpc/pmem: Fix kernel crash due to wrong range value usage in flush_dcache_range ...

This patch fix the below kernel crash.

 BUG: Unable to handle kernel data access on read at 0xc000000380000000
 Faulting instruction address: 0xc00000000008b6f0
cpu 0x5: Vector: 300 (Data Access) at [c0000000d8587790]
    pc: c00000000008b6f0: arch_remove_memory+0x150/0x210
    lr: c00000000008b720: arch_remove_memory+0x180/0x210
    sp: c0000000d8587a20
   msr: 800000000280b033
   dar: c000000380000000
 dsisr: 40000000
  current = 0xc0000000d8558600
  paca    = 0xc00000000fff8f00   irqmask: 0x03   irq_happened: 0x01
    pid   = 1220, comm = ndctl
enter ? for help
 memunmap_pages+0x33c/0x410
 devm_action_release+0x30/0x50
 release_nodes+0x30c/0x3a0
 device_release_driver_internal+0x178/0x240
 unbind_store+0x74/0x190
 drv_attr_store+0x44/0x60
 sysfs_kf_write+0x74/0xa0
 kernfs_fop_write+0x1b0/0x260
 __vfs_write+0x3c/0x70
 vfs_write+0xe4/0x200
 ksys_write+0x7c/0x140
 system_call+0x5c/0x68

Fixes: 076265907cf9 ("powerpc: Chunk calls to flush_dcache_range in arch_*_memory")
Reported-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191204052909.59145-1-aneesh.kumar@linux.ibm.com

2019-12-05 00:11:45 +11:00

..

book3s32

powerpc/32s: automatically allocate BAT in setbat()

2019-11-19 19:38:38 +11:00

book3s64

Merge branch 'akpm' (patches from Andrew)

2019-12-01 20:36:41 -08:00

kasan

powerpc/mm: Fix an Oops in kasan_mmu_init()

2019-09-21 08:36:53 +10:00

nohash

powerpc/32: Don't populate page tables for block mapped pages except on the 8xx.

2019-11-18 22:27:52 +11:00

ptdump

powerpc: use the generic dma coherent remap allocator

2019-08-28 23:19:34 +10:00

copro_fault.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153

2019-05-30 11:26:32 -07:00

dma-noncoherent.c

dma-mapping: drop the dev argument to arch_sync_dma_for_*

2019-11-20 20:31:38 +01:00

drmem.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

fault.c

powerpc/mm: Show if a bad page fault on data is read or write.

2019-11-18 22:27:51 +11:00

highmem.c

powerpc/highmem: Change BUG_ON() to WARN_ON()

2019-04-20 22:02:11 +10:00

hugetlbpage.c

mm: introduce compound_nr()

2019-09-24 15:54:08 -07:00

init_32.c

powerpc: move memstart_addr and kernstart_addr to init-common.c

2019-11-13 19:27:28 +11:00

init_64.c

Merge branch 'topic/kaslr-book3e32' into next

2019-11-14 19:23:33 +11:00

init-common.c

powerpc: introduce kernstart_virt_addr to store the kernel base

2019-11-13 19:27:32 +11:00

ioremap_32.c

powerpc/ioremap: warn on early use of ioremap()

2019-11-19 19:38:38 +11:00

ioremap_64.c

powerpc/ioremap: warn on early use of ioremap()

2019-11-19 19:38:38 +11:00

ioremap.c

powerpc/mm: split out early ioremap path.

2019-08-27 13:03:35 +10:00

Makefile

powerpc/mm: Move ioremap functions out of pgtable_32/64.c

2019-08-27 13:03:35 +10:00

mem.c

powerpc/pmem: Fix kernel crash due to wrong range value usage in flush_dcache_range

2019-12-05 00:11:45 +11:00

mmap.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30 11:26:35 -07:00

mmu_context.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

mmu_decl.h

powerpc/fsl_booke/kaslr: clear the original kernel if randomized

2019-11-13 19:27:44 +11:00

numa.c

powerpc updates for 5.3

2019-07-13 16:08:36 -07:00

pgtable_32.c

powerpc/32: Don't populate page tables for block mapped pages except on the 8xx.

2019-11-18 22:27:52 +11:00

pgtable_64.c

powerpc/mm: Move ioremap functions out of pgtable_32/64.c

2019-08-27 13:03:35 +10:00

pgtable-frag.c

mm: treewide: clarify pgtable_page_{ctor,dtor}() naming

2019-09-26 10:10:44 -07:00

pgtable.c

powerpc updates for 5.3

2019-07-13 16:08:36 -07:00

slice.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30 11:26:35 -07:00