If start_code / end_code pointers are screwed then "VmExe" could be bigger than total executable virtual memory and "VmLib" becomes negative:
VmExe: 294320 kB VmLib: 18446744073709327564 kB VmExe and VmLib documented as text segment and shared library code size. Now their sum will be always equal to mm->exec_vm which sums size of executable and not writable and not stack areas. Signed-off-by: Konstantin Khlebnikov <[email protected]> --- fs/proc/task_mmu.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 5589b4bd4b85..d3819beb2d30 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -46,8 +46,11 @@ void task_mem(struct seq_file *m, struct mm_struct *mm) if (hiwater_rss < mm->hiwater_rss) hiwater_rss = mm->hiwater_rss; - text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10; - lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text; + /* split executable areas between text and lib */ + text = PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK); + text = min(text, mm->exec_vm << PAGE_SHIFT); + lib = (mm->exec_vm << PAGE_SHIFT) - text; + swap = get_mm_counter(mm, MM_SWAPENTS); ptes = PTRS_PER_PTE * sizeof(pte_t) * atomic_long_read(&mm->nr_ptes); pmds = PTRS_PER_PMD * sizeof(pmd_t) * mm_nr_pmds(mm); @@ -78,7 +81,9 @@ void task_mem(struct seq_file *m, struct mm_struct *mm) file << (PAGE_SHIFT-10), shmem << (PAGE_SHIFT-10), mm->data_vm << (PAGE_SHIFT-10), - mm->stack_vm << (PAGE_SHIFT-10), text, lib, + mm->stack_vm << (PAGE_SHIFT-10), + text >> 10, + lib >> 10, ptes >> 10, pmds >> 10, swap << (PAGE_SHIFT-10));
