kernel-hacking-2024-linux-s.../mm
Wu Fengguang ff8b16d7e1 vmstat: fix offset calculation on void*
Fix regression introduced by commit 79da826aee ("writeback: report
dirty thresholds in /proc/vmstat").

The incorrect pointer arithmetic can result in problems like this:

  BUG: unable to handle kernel paging request at 07c06d16
  IP: [<c050c336>] strnlen+0x6/0x20
  Call Trace:
   [<c050a249>] ? string+0x39/0xe0
   [<c042be6b>] ? __wake_up_common+0x4b/0x80
   [<c050afcc>] ? vsnprintf+0x1ec/0x380
   [<c04b380e>] ? seq_printf+0x2e/0x60
   [<c04829a6>] ? vmstat_show+0x26/0x30
   [<c04b3bb6>] ? seq_read+0xa6/0x380
   [<c04b3b10>] ? seq_read+0x0/0x380
   [<c04d5d2f>] ? proc_reg_read+0x5f/0x90
   [<c049c4a1>] ? vfs_read+0xa1/0x140
   [<c04d5cd0>] ? proc_reg_read+0x0/0x90
   [<c049c981>] ? sys_read+0x41/0x70
   [<c0402bd0>] ? sysenter_do_call+0x12/0x26

Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Michael Rubin <mrubin@google.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-03 14:39:58 -04:00
..
backing-dev.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2010-10-26 17:58:44 -07:00
bootmem.c
bounce.c
compaction.c
debug-pagealloc.c
dmapool.c mm: add a might_sleep_if() to dma_pool_alloc() 2010-10-26 16:52:08 -07:00
fadvise.c
failslab.c
filemap.c Release page reference during page fault retry 2010-11-02 17:02:31 -04:00
filemap_xip.c
fremap.c
highmem.c mm,x86: fix kmap_atomic_push vs ioremap_32.c 2010-10-27 18:03:05 -07:00
hugetlb.c mm/hugetlb.c: add missing spin_lock() to hugetlb_cow() 2010-10-26 16:52:11 -07:00
hwpoison-inject.c
init-mm.c
internal.h mm: fix is_mem_section_removable() page_order BUG_ON check 2010-10-26 16:52:11 -07:00
Kconfig
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
maccess.c MN10300: Save frame pointer in thread_info struct rather than global var 2010-10-27 17:29:01 +01:00
madvise.c
Makefile
memblock.c
memcontrol.c memcg: generic filestat update interface 2010-10-27 18:03:10 -07:00
memory-failure.c mm: compaction: fix COMPACTPAGEFAILED counting 2010-10-26 16:52:06 -07:00
memory.c use clear_page()/copy_page() in favor of memset()/memcpy() on whole pages 2010-10-26 16:52:13 -07:00
memory_hotplug.c mm: do_migrate_range: reduce list_empty() check 2010-10-26 16:52:11 -07:00
mempolicy.c numa: fix slab_node(MPOL_BIND) 2010-10-28 10:04:30 -07:00
mempool.c
migrate.c mm: fix error reporting in move_pages() syscall 2010-10-26 16:52:11 -07:00
mincore.c
mlock.c
mm_init.c
mmap.c audit mmap 2010-10-30 08:45:43 -04:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c mm: remove pte_*map_nested() 2010-10-26 16:52:08 -07:00
msync.c
nommu.c audit mmap 2010-10-30 08:45:43 -04:00
oom_kill.c oom: kill all threads sharing oom killed task's mm 2010-10-26 16:52:05 -07:00
page-writeback.c writeback: remove the internal 5% low bound on dirty_ratio 2010-10-26 16:52:08 -07:00
page_alloc.c mm: add casts to/from gfp_t in gfp_to_alloc_flags() 2010-10-26 16:52:09 -07:00
page_cgroup.c
page_io.c
page_isolation.c mm: page_isolation: codeclean fix comment and rm unneeded val init 2010-10-26 16:52:11 -07:00
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
prio_tree.c
quicklist.c
readahead.c
rmap.c rmap: make anon_vma_chain_free() static 2010-10-26 16:52:10 -07:00
shmem.c convert get_sb_nodev() users 2010-10-29 04:16:31 -04:00
slab.c replace nested max/min macros with {max,min}3 macro 2010-10-26 16:52:12 -07:00
slob.c
slub.c
sparse-vmemmap.c
sparse.c
swap.c fuse: use release_pages() 2010-10-27 18:03:17 -07:00
swap_state.c
swapfile.c /proc/swaps: support polling 2010-10-26 16:52:11 -07:00
thrash.c
truncate.c
util.c export __get_user_pages_fast() function 2010-10-24 10:51:24 +02:00
vmalloc.c mm: add vzalloc() and vzalloc_node() helpers 2010-10-26 16:52:10 -07:00
vmscan.c vmscan,tmpfs: treat used once pages on tmpfs as used once 2010-10-26 16:52:08 -07:00
vmstat.c vmstat: fix offset calculation on void* 2010-11-03 14:39:58 -04:00