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| author | Roland McGrath <roland@redhat.com> | 2009-02-07 02:34:07 +0100 |
|---|---|---|
| committer | Roland McGrath <roland@redhat.com> | 2009-02-07 02:34:07 +0100 |
| commit | 92dc07b1f988e8c237a38e23be660b9b8533e6fd (patch) | |
| tree | 4a689fbb465d7302b105678152170d8665f56ae7 /fs/bad_inode.c | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiw... (diff) | |
| download | linux-92dc07b1f988e8c237a38e23be660b9b8533e6fd.tar.xz linux-92dc07b1f988e8c237a38e23be660b9b8533e6fd.zip | |
elf core dump: fix get_user use
The elf_core_dump() code does its work with set_fs(KERNEL_DS) in force,
so vma_dump_size() needs to switch back with set_fs(USER_DS) to safely
use get_user() for a normal user-space address.
Checking for VM_READ optimizes out the case where get_user() would fail
anyway. The vm_file check here was already superfluous given the control
flow earlier in the function, so that is a cleanup/optimization unrelated
to other changes but an obvious and trivial one.
Reported-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Roland McGrath <roland@redhat.com>
Diffstat (limited to 'fs/bad_inode.c')
0 files changed, 0 insertions, 0 deletions