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Kumar Kartikeya Dwivedi 4d7d7f69f4 bpf: Adapt copy_map_value for multiple offset case 
Since now there might be at most 10 offsets that need handling in
copy_map_value, the manual shuffling and special case is no longer going
to work. Hence, let's generalise the copy_map_value function by using
a sorted array of offsets to skip regions that must be avoided while
copying into and out of a map value.

When the map is created, we populate the offset array in struct map,
Then, copy_map_value uses this sorted offset array is used to memcpy
while skipping timer, spin lock, and kptr. The array is allocated as
in most cases none of these special fields would be present in map
value, hence we can save on space for the common case by not embedding
the entire object inside bpf_map struct.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220424214901.2743946-6-memxor@gmail.com
 		2022-04-25 20:26:44 -07:00
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bpf bpf: Adapt copy_map_value for multiple offset case 2022-04-25 20:26:44 -07:00
cgroup Driver core changes for 5.18-rc1 2022-03-28 12:41:28 -07:00
configs Char/Misc and other driver updates for 5.18-rc1 2022-03-28 12:27:35 -07:00
debug kdb: Fix the putarea helper function 2022-03-24 16:39:47 +00:00
dma dma-mapping: move pgprot_decrypted out of dma_pgprot 2022-04-01 06:46:51 +02:00
entry Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels" 2022-03-31 10:36:55 +02:00
events asm-generic updates for 5.18 2022-03-23 18:03:08 -07:00
futex mm/truncate: Inline invalidate_complete_page() into its one caller 2022-03-21 12:59:01 -04:00
gcov
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irq Changes in this cycle were: 2022-03-22 14:39:12 -07:00
kcsan KCSAN updates for v5.17 2022-01-11 09:51:26 -08:00
livepatch ptrace: Cleanups for v5.18 2022-03-28 17:29:53 -07:00
locking Changes in this cycle were: 2022-03-22 13:44:21 -07:00
power for-5.18/block-2022-03-18 2022-03-21 16:48:55 -07:00
printk printk changes for 5.18 2022-03-23 10:54:27 -07:00
rcu Changes in this cycle were: 2022-03-22 14:39:12 -07:00
sched ptrace: Cleanups for v5.18 2022-03-28 17:29:53 -07:00
time ptrace: Cleanups for v5.18 2022-03-28 17:29:53 -07:00
trace bpf: Move rcu lock management out of BPF_PROG_RUN routines 2022-04-19 09:45:47 -07:00
.gitignore
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Kconfig.freezer
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Kconfig.hz
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Kconfig.locks
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Kconfig.preempt Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels" 2022-03-31 10:36:55 +02:00
Makefile kprobes: Use rethook for kretprobe if possible 2022-03-28 19:38:09 -07:00
acct.c
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async.c Revert "module, async: async_synchronize_full() on module init iff async is used" 2022-02-03 11:20:34 -08:00
audit.c audit: improve audit queue handling when "audit=1" on cmdline 2022-01-25 13:22:51 -05:00
audit.h audit: log AUDIT_TIME_* records only from rules 2022-02-22 13:51:40 -05:00
audit_fsnotify.c
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audit_tree.c audit: use struct_size() helper in kmalloc() 2021-12-14 17:39:42 -05:00
audit_watch.c
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auditfilter.c audit/stable-5.17 PR 20220110 2022-01-11 13:08:21 -08:00
auditsc.c audit/stable-5.18 PR 20220321 2022-03-21 20:53:11 -07:00
backtracetest.c
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bounds.c
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capability.c xfs: don't generate selinux audit messages for capability testing 2022-03-09 10:32:06 -08:00
cfi.c
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compat.c
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configs.c
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context_tracking.c
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cpu.c Changes in this cycle were: 2022-03-22 14:39:12 -07:00
cpu_pm.c
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crash_core.c kernel/crash_core: suppress unknown crashkernel parameter warning 2021-12-25 12:20:55 -08:00
crash_dump.c
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cred.c x86: Mark __invalid_creds() __noreturn 2022-03-15 10:32:44 +01:00
delayacct.c delayacct: track delays from memory compact 2022-01-20 08:52:55 +02:00
dma.c
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exec_domain.c
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exit.c ptrace: Cleanups for v5.18 2022-03-28 17:29:53 -07:00
extable.c lkdtm: Really write into kernel text in WRITE_KERN 2022-02-16 23:25:12 +11:00
fail_function.c
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fork.c kasan, arm64: reset pointer tags of vmapped stacks 2022-03-24 19:06:47 -07:00
freezer.c
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gen_kheaders.sh
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groups.c
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hung_task.c hung_task: move hung_task sysctl interface to hung_task.c 2022-01-22 08:33:34 +02:00
iomem.c
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irq_work.c
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jump_label.c
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kallsyms.c kallsyms: Skip the name search for empty string 2022-03-17 20:17:18 -07:00
kcmp.c
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kcov.c kcov: properly handle subsequent mmap calls 2022-03-23 19:00:35 -07:00
kexec.c
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kexec_core.c exit: Move oops specific logic from do_exit into make_task_dead 2021-12-13 12:04:45 -06:00
kexec_elf.c
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kexec_file.c
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kexec_internal.h
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kheaders.c
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kmod.c
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kprobes.c kprobes: Use rethook for kretprobe if possible 2022-03-28 19:38:09 -07:00
ksysfs.c kernel/ksysfs.c: use helper macro __ATTR_RW 2022-03-23 19:00:33 -07:00
kthread.c asm-generic updates for 5.18 2022-03-23 18:03:08 -07:00
latencytop.c
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module-internal.h module: add in-kernel support for decompressing 2022-01-11 18:45:02 -08:00
module.c NFSD: Remove svc_serv_ops::svo_module 2022-02-28 10:26:40 -05:00
module_decompress.c module: fix building with sysfs disabled 2022-02-16 12:51:32 -08:00
module_signature.c
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module_signing.c
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notifier.c notifier: Return an error when a callback has already been registered 2021-12-29 10:37:33 +01:00
nsproxy.c
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padata.c padata: replace cpumask_weight with cpumask_empty in padata.c 2022-01-31 11:21:46 +11:00
panic.c panic: move panic_print before kmsg dumpers 2022-03-23 19:00:35 -07:00
params.c kobject: remove kset from struct kset_uevent_ops callbacks 2021-12-28 11:26:18 +01:00
pid.c
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pid_namespace.c
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profile.c exit: Remove profile_handoff_task 2022-01-08 12:43:57 -06:00
ptrace.c ptrace: Check PTRACE_O_SUSPEND_SECCOMP permission on PTRACE_SEIZE 2022-03-22 13:06:05 -05:00
range.c
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reboot.c
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regset.c
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relay.c
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resource.c kernel/resource: fix kfree() of bootmem memory again 2022-03-23 19:00:35 -07:00
resource_kunit.c
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rseq.c rseq: Remove broken uapi field layout on 32-bit little endian 2022-02-02 13:11:34 +01:00
scftorture.c scftorture: Always log error message 2021-12-07 16:36:17 -08:00
scs.c kasan, vmalloc: only tag normal vmalloc allocations 2022-03-24 19:06:48 -07:00
seccomp.c ptrace: Cleanups for v5.18 2022-03-28 17:29:53 -07:00
signal.c Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels" 2022-03-31 10:36:55 +02:00
smp.c
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smpboot.c
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smpboot.h
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softirq.c genirq, softirq: Use in_hardirq() instead of in_irq() 2022-02-02 21:34:19 +01:00
stackleak.c gcc-plugins/stackleak: Use noinstr in favor of notrace 2022-02-03 17:02:21 -08:00
stacktrace.c uaccess: remove CONFIG_SET_FS 2022-02-25 09:36:06 +01:00
static_call.c KVM: x86: allow defining return-0 static calls 2022-02-18 12:44:22 -05:00
stop_machine.c
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sys.c prlimit: do not grab the tasklist_lock 2022-03-08 14:33:36 -06:00
sys_ni.c mm/mempolicy: wire up syscall set_mempolicy_home_node 2022-01-15 16:30:30 +02:00
sysctl-test.c
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sysctl.c bpf: Move BPF sysctls from kernel/sysctl.c to BPF core 2022-04-13 21:36:56 +02:00
task_work.c resume_user_mode: Move to resume_user_mode.h 2022-03-10 16:51:50 -06:00
taskstats.c taskstats: remove unneeded dead assignment 2022-03-23 19:00:35 -07:00
torture.c torture: Wake up kthreads after storing task_struct pointer 2022-02-01 17:24:39 -08:00
tracepoint.c
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tsacct.c taskstats: Cleanup the use of task->exit_code 2022-01-08 12:43:57 -06:00
ucount.c ucounts: Handle wrapping in is_ucounts_overlimit 2022-02-17 09:11:57 -06:00
uid16.c
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uid16.h
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umh.c
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up.c
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user-return-notifier.c
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user.c
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user_namespace.c ucounts: Fix systemd LimitNPROC with private users regression 2022-02-25 10:40:14 -06:00
usermode_driver.c
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utsname.c
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utsname_sysctl.c
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watch_queue.c watch_queue: Free the page array when watch_queue is dismantled 2022-04-02 10:37:39 -07:00
watchdog.c sched/isolation: Use single feature type while referring to housekeeping cpumask 2022-02-16 15:57:55 +01:00
watchdog_hld.c
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workqueue.c Merge branch 'for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2022-03-23 12:40:51 -07:00
workqueue_internal.h
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