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| author | Brian Pomerantz <bapper@piratehaven.org> | 2007-04-01 23:49:41 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-04-13 13:47:18 -0700 |
| commit | 8d6b75109e6c95fbb3d5e747f709e2e7633e6233 (patch) | |
| tree | 9fa540e5eda83ea3c8e596fa7d1f0637d136cf71 | |
| parent | c83d476c9dfc8306bd8578555d6ec462492cc707 (diff) | |
| download | linux-stable-8d6b75109e6c95fbb3d5e747f709e2e7633e6233.tar.gz linux-stable-8d6b75109e6c95fbb3d5e747f709e2e7633e6233.tar.bz2 linux-stable-8d6b75109e6c95fbb3d5e747f709e2e7633e6233.zip | |
fix page leak during core dump
When the dump cannot occur most likely because of a full file system and
the page to be written is the zero page, the call to page_cache_release()
is missed.
Signed-off-by: Brian Pomerantz <bapper@mvista.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: David Howells <dhowells@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | fs/binfmt_elf.c | 5 | ||||
| -rw-r--r-- | fs/binfmt_elf_fdpic.c | 2 |
2 files changed, 5 insertions, 2 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 51db1182b27e..b172b0160f5c 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -1704,7 +1704,10 @@ static int elf_core_dump(long signr, struct pt_regs *regs, struct file *file) DUMP_SEEK(PAGE_SIZE); } else { if (page == ZERO_PAGE(addr)) { - DUMP_SEEK(PAGE_SIZE); + if (!dump_seek(file, PAGE_SIZE)) { + page_cache_release(page); + goto end_coredump; + } } else { void *kaddr; flush_cache_page(vma, addr, diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c index a4d933a51208..a852eb7b5a5d 100644 --- a/fs/binfmt_elf_fdpic.c +++ b/fs/binfmt_elf_fdpic.c @@ -1473,8 +1473,8 @@ static int elf_fdpic_dump_segments(struct file *file, struct mm_struct *mm, DUMP_SEEK(file->f_pos + PAGE_SIZE); } else if (page == ZERO_PAGE(addr)) { - DUMP_SEEK(file->f_pos + PAGE_SIZE); page_cache_release(page); + DUMP_SEEK(file->f_pos + PAGE_SIZE); } else { void *kaddr; |