Marco Elver 2dfe63e61c mm, kfence: support kmem_dump_obj() for KFENCE objects ... Calling kmem_obj_info() via kmem_dump_obj() on KFENCE objects has been producing garbage data due to the object not actually being maintained by SLAB or SLUB. Fix this by implementing __kfence_obj_info() that copies relevant information to struct kmem_obj_info when the object was allocated by KFENCE; this is called by a common kmem_obj_info(), which also calls the slab/slub/slob specific variant now called __kmem_obj_info(). For completeness, kmem_dump_obj() now displays if the object was allocated by KFENCE. Link: https://lore.kernel.org/all/20220323090520.GG16885@xsang-OptiPlex-9020/ Link: https://lkml.kernel.org/r/20220406131558.3558585-1-elver@google.com Fixes: b89fb5ef0c ("mm, kfence: insert KFENCE hooks for SLUB") Fixes: d3fb45f370 ("mm, kfence: insert KFENCE hooks for SLAB") Signed-off-by: Marco Elver <elver@google.com> Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Reported-by: kernel test robot <oliver.sang@intel.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> [slab] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2022-04-15 14:49:55 -07:00
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Makefile	mm/kfence: remove unnecessary CONFIG_KFENCE option	2022-03-22 15:57:11 -07:00
core.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
kfence.h	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
kfence_test.c	kfence: test: try to avoid test_gfpzero trigger rcu_stall	2022-03-22 15:57:11 -07:00
report.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00