bdf56c7580
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEe7vIQRWZI0iWSE3xu+CwddJFiJoFAmbn5g0ACgkQu+CwddJF iJq+Uwf/aqnLNEpjUBzwUUhSojCpPnTtiyjv+AILTxoSTHmbu8OvN0W79+Rpbdmk O4QapAK+BCs+VL2VATwCCufcJ75Z78txO+buQE0DgwluFTIYZ+IwpUMPsK04ln6A FD1/uvP1QFx60heqcp2c4zWFBUpg4DE6ufx2A5kieO268lFcWLxyVlcdgRU79ZCt uAcV2yDLk3GvPGfxZwPKEmZUo/FmuSoBv0XgT+eWxmTu/R7hcpFse49OyjBH8Tvb 8d/RCIFgXOr8dTIjtds7eenwB/is4TkRlctezEQ0jO9/JwL/BVOgXZjD1qCtNWqz is4TWK7VV+vdq1RD+0xC2hV/+uGEwQ== =+WAm -----END PGP SIGNATURE----- Merge tag 'slab-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab Pull slab updates from Vlastimil Babka: "This time it's mostly refactoring and improving APIs for slab users in the kernel, along with some debugging improvements. - kmem_cache_create() refactoring (Christian Brauner) Over the years have been growing new parameters to kmem_cache_create() where most of them are needed only for a small number of caches - most recently the rcu_freeptr_offset parameter. To avoid adding new parameters to kmem_cache_create() and adjusting all its callers, or creating new wrappers such as kmem_cache_create_rcu(), we can now pass extra parameters using the new struct kmem_cache_args. Not explicitly initialized fields default to values interpreted as unused. kmem_cache_create() is for now a wrapper that works both with the new form: kmem_cache_create(name, object_size, args, flags) and the legacy form: kmem_cache_create(name, object_size, align, flags, ctor) - kmem_cache_destroy() waits for kfree_rcu()'s in flight (Vlastimil Babka, Uladislau Rezki) Since SLOB removal, kfree() is allowed for freeing objects allocated by kmem_cache_create(). By extension kfree_rcu() as allowed as well, which can allow converting simple call_rcu() callbacks that only do kmem_cache_free(), as there was never a kmem_cache_free_rcu() variant. However, for caches that can be destroyed e.g. on module removal, the cache owners knew to issue rcu_barrier() first to wait for the pending call_rcu()'s, and this is not sufficient for pending kfree_rcu()'s due to its internal batching optimizations. Ulad has provided a new kvfree_rcu_barrier() and to make the usage less error-prone, kmem_cache_destroy() calls it. Additionally, destroying SLAB_TYPESAFE_BY_RCU caches now again issues rcu_barrier() synchronously instead of using an async work, because the past motivation for async work no longer applies. Users of custom call_rcu() callbacks should however keep calling rcu_barrier() before cache destruction. - Debugging use-after-free in SLAB_TYPESAFE_BY_RCU caches (Jann Horn) Currently, KASAN cannot catch UAFs in such caches as it is legal to access them within a grace period, and we only track the grace period when trying to free the underlying slab page. The new CONFIG_SLUB_RCU_DEBUG option changes the freeing of individual object to be RCU-delayed, after which KASAN can poison them. - Delayed memcg charging (Shakeel Butt) In some cases, the memcg is uknown at allocation time, such as receiving network packets in softirq context. With kmem_cache_charge() these may be now charged later when the user and its memcg is known. - Misc fixes and improvements (Pedro Falcato, Axel Rasmussen, Christoph Lameter, Yan Zhen, Peng Fan, Xavier)" * tag 'slab-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: (34 commits) mm, slab: restore kerneldoc for kmem_cache_create() io_uring: port to struct kmem_cache_args slab: make __kmem_cache_create() static inline slab: make kmem_cache_create_usercopy() static inline slab: remove kmem_cache_create_rcu() file: port to struct kmem_cache_args slab: create kmem_cache_create() compatibility layer slab: port KMEM_CACHE_USERCOPY() to struct kmem_cache_args slab: port KMEM_CACHE() to struct kmem_cache_args slab: remove rcu_freeptr_offset from struct kmem_cache slab: pass struct kmem_cache_args to do_kmem_cache_create() slab: pull kmem_cache_open() into do_kmem_cache_create() slab: pass struct kmem_cache_args to create_cache() slab: port kmem_cache_create_usercopy() to struct kmem_cache_args slab: port kmem_cache_create_rcu() to struct kmem_cache_args slab: port kmem_cache_create() to struct kmem_cache_args slab: add struct kmem_cache_args slab: s/__kmem_cache_create/do_kmem_cache_create/g memcg: add charging of already allocated slab objects mm/slab: Optimize the code logic in find_mergeable() ... |
||
---|---|---|
.. | ||
bpf | ||
cgroup | ||
configs | ||
debug | ||
dma | ||
entry | ||
events | ||
futex | ||
gcov | ||
irq | ||
kcsan | ||
livepatch | ||
locking | ||
module | ||
power | ||
printk | ||
rcu | ||
sched | ||
time | ||
trace | ||
.gitignore | ||
acct.c | ||
async.c | ||
audit_fsnotify.c | ||
audit_tree.c | ||
audit_watch.c | ||
audit.c | ||
audit.h | ||
auditfilter.c | ||
auditsc.c | ||
backtracetest.c | ||
bounds.c | ||
capability.c | ||
cfi.c | ||
compat.c | ||
configs.c | ||
context_tracking.c | ||
cpu_pm.c | ||
cpu.c | ||
crash_core.c | ||
crash_reserve.c | ||
cred.c | ||
delayacct.c | ||
dma.c | ||
elfcorehdr.c | ||
exec_domain.c | ||
exit.c | ||
exit.h | ||
extable.c | ||
fail_function.c | ||
fork.c | ||
freezer.c | ||
gen_kheaders.sh | ||
groups.c | ||
hung_task.c | ||
iomem.c | ||
irq_work.c | ||
jump_label.c | ||
kallsyms_internal.h | ||
kallsyms_selftest.c | ||
kallsyms_selftest.h | ||
kallsyms.c | ||
kcmp.c | ||
Kconfig.freezer | ||
Kconfig.hz | ||
Kconfig.kexec | ||
Kconfig.locks | ||
Kconfig.preempt | ||
kcov.c | ||
kexec_core.c | ||
kexec_elf.c | ||
kexec_file.c | ||
kexec_internal.h | ||
kexec.c | ||
kheaders.c | ||
kprobes.c | ||
ksyms_common.c | ||
ksysfs.c | ||
kthread.c | ||
latencytop.c | ||
Makefile | ||
module_signature.c | ||
notifier.c | ||
nsproxy.c | ||
numa.c | ||
padata.c | ||
panic.c | ||
params.c | ||
pid_namespace.c | ||
pid_sysctl.h | ||
pid.c | ||
profile.c | ||
ptrace.c | ||
range.c | ||
reboot.c | ||
regset.c | ||
relay.c | ||
resource_kunit.c | ||
resource.c | ||
rseq.c | ||
scftorture.c | ||
scs.c | ||
seccomp.c | ||
signal.c | ||
smp.c | ||
smpboot.c | ||
smpboot.h | ||
softirq.c | ||
stackleak.c | ||
stacktrace.c | ||
static_call_inline.c | ||
static_call.c | ||
stop_machine.c | ||
sys_ni.c | ||
sys.c | ||
sysctl-test.c | ||
sysctl.c | ||
task_work.c | ||
taskstats.c | ||
torture.c | ||
tracepoint.c | ||
tsacct.c | ||
ucount.c | ||
uid16.c | ||
uid16.h | ||
umh.c | ||
up.c | ||
user_namespace.c | ||
user-return-notifier.c | ||
user.c | ||
usermode_driver.c | ||
utsname_sysctl.c | ||
utsname.c | ||
vhost_task.c | ||
vmcore_info.c | ||
watch_queue.c | ||
watchdog_buddy.c | ||
watchdog_perf.c | ||
watchdog.c | ||
workqueue_internal.h | ||
workqueue.c |