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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
arch s390 updates for 5.18-rc3 2022-04-14 12:17:25 -07:00
block
certs
crypto
Documentation Networking fixes for 5.18-rc3, including fixes from wireless and 2022-04-14 11:58:19 -07:00
drivers Networking fixes for 5.18-rc3, including fixes from wireless and 2022-04-14 11:58:19 -07:00
fs for-5.18-rc2-tag 2022-04-14 10:58:27 -07:00
include mm, kfence: support kmem_dump_obj() for KFENCE objects 2022-04-15 14:49:55 -07:00
init
ipc
kernel irq_work: use kasan_record_aux_stack_noalloc() record callstack 2022-04-15 14:49:55 -07:00
lib
LICENSES
mm mm, kfence: support kmem_dump_obj() for KFENCE objects 2022-04-15 14:49:55 -07:00
net Networking fixes for 5.18-rc3, including fixes from wireless and 2022-04-14 11:58:19 -07:00
samples
scripts hardening fixes for v5.18-rc3 2022-04-12 14:29:40 -10:00
security
sound sound fixes for 5.18-rc3 2022-04-14 11:08:12 -07:00
tools x86: 2022-04-12 14:16:33 -10:00
usr
virt
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.cocciconfig
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COPYING
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MAINTAINERS MAINTAINERS: Broadcom internal lists aren't maintainers 2022-04-15 14:49:54 -07:00
Makefile Linux 5.18-rc2 2022-04-10 14:21:36 -10:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.