proc_sysctl.c

Forked from hardware-enablement / Rockchip upstream enablement efforts / linux

Source project has a limited visibility.

5 years ago

sysctl: reject gigantic reads/write to sysctl files · ef9d965b


Instead of triggering a WARN_ON deep down in the page allocator just
give up early on allocations that are way larger than the usual sysctl
values.

Fixes: 32927393 ("sysctl: pass kernel pointers to ->proc_handler")
Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

ef9d965b

History

sysctl: reject gigantic reads/write to sysctl files

Christoph Hellwig authored 5 years ago


Instead of triggering a WARN_ON deep down in the page allocator just
give up early on allocations that are way larger than the usual sysctl
values.

Fixes: 32927393 ("sysctl: pass kernel pointers to ->proc_handler")
Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

revoke.c 22.26 KiB