Revert "mm/kmemleak: move the initialisation of object to __link_object"

Patch series "Fix invalid wait context of set_track_prepare()".

Geert reported an invalid wait context[1] which is resulted by moving
set_track_prepare() inside kmemleak_lock.  This is not allowed because in
RT mode, the spinlocks can be preempted but raw_spinlocks can not, so it
is not allowd to acquire spinlocks while holding raw_spinlocks.  The
second patch fix same problem in kmemleak_update_trace().


This patch (of 2):

Move the initialisation of object back to__alloc_object() because
set_track_prepare() attempt to acquire zone->lock(spinlocks) while
__link_object is holding kmemleak_lock(raw_spinlocks).  This is not right
for RT mode.

This reverts commit 245245c2fffd00 ("mm/kmemleak: move the initialisation
of object to __link_object").

Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Fixes: 245245c2fffd ("mm/kmemleak: move the initialisation of object to __link_object")
Signed-off-by: Liu Shixin <[email protected]>
Reported-by: Geert Uytterhoeven <[email protected]>
Closes: https://lore.kernel.org/linux-mm/CAMuHMdWj0UzwNaxUvcocTfh481qRJpOWwXxsJCTJfu1oCqvgdA@mail.gmail.com/ [1]
Acked-by: Catalin Marinas <[email protected]>
Cc: Kefeng Wang <[email protected]>
Cc: Patrick Wang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions