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lib/ftl: check for io not being NULL before dereferencing

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ftl_io_free() handles NULL io being passed, but shouldn't
dereference it before returning.

Change-Id: Ia705d4ab9f8b3569e9704a1f97e70f7579084efb
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/462487
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Tomasz Zawadzki 2019-07-18 07:31:42 -04:00 committed by Ben Walker
parent 8500db5ee0
commit 06c7ef7f6a
1 changed files with 2 additions and 1 deletions
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3
lib/ftl/ftl_io.c
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@ -570,12 +570,13 @@ ftl_io_reset(struct ftl_io *io)
void
ftl_io_free(struct ftl_io *io)
{
struct ftl_io *parent = io->parent;
struct ftl_io *parent;
if (!io) {
return;
}
parent = io->parent;
if (parent && ftl_io_remove_child(io)) {
ftl_io_complete(parent);
}