move_vma() sets *locked even if move_page_tables() or ->mremap() fails, change sys_mremap() to check "ret & ~PAGE_MASK".
I think we should simply remove the VM_LOCKED code in move_vma(), that is why this patch doesn't change move_vma(). But this needs more cleanups. Signed-off-by: Oleg Nesterov <[email protected]> Acked-by: David Rientjes <[email protected]> --- mm/mremap.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/mm/mremap.c b/mm/mremap.c index 3310378..7dcf7b4 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -578,8 +578,10 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len, ret = move_vma(vma, addr, old_len, new_len, new_addr, &locked); } out: - if (ret & ~PAGE_MASK) + if (ret & ~PAGE_MASK) { vm_unacct_memory(charged); + locked = 0; + } up_write(¤t->mm->mmap_sem); if (locked && new_len > old_len) mm_populate(new_addr + old_len, new_len - old_len); -- 1.5.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
