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(parent: 04329d1) | patch
btrfs-progs: utils: Fix NULL pointer derefernces in string_is_numerical
authorQu Wenruo <quwenruo@cn.fujitsu.com>
Mon, 24 Oct 2016 02:43:34 +0000 (10:43 +0800)
committerDavid Sterba <dsterba@suse.com>
Wed, 23 Nov 2016 09:48:13 +0000 (10:48 +0100)
commitd6ab2fdca495b98e497f21f277dadba834e2199b
tree5263f35efe13b239034b3bfddebab8b770e3a29ftree | snapshot
parent04329d1e772d28cbbb4dcfbc89ffa41dbc802ca1commit | diff
btrfs-progs: utils: Fix NULL pointer derefernces in string_is_numerical

In get_running_kernel_version() function, we directly pass return
pointer from strtok_r() to string_is_numerical().

Return pointer from strok_r() can be NULL, but string_is_numerical()
can't handle it and will cause NULL pointer derefernces.

Fix it by check if it's a NULL pointer first.

Resolves-Coverity-CID: 1374097
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
utils.c diff | blob | history
Domain: System / System Framework Device Management;