Hao Luo 15166bb300 bpf: Make per_cpu_ptr return rdonly PTR_TO_MEM. ...

commit 34d3a78c68 upstream.

Tag the return type of {per, this}_cpu_ptr with RDONLY_MEM. The
returned value of this pair of helpers is kernel object, which
can not be updated by bpf programs. Previously these two helpers
return PTR_OT_MEM for kernel objects of scalar type, which allows
one to directly modify the memory. Now with RDONLY_MEM tagging,
the verifier will reject programs that write into RDONLY_MEM.

Fixes: 63d9b80dcf ("bpf: Introducte bpf_this_cpu_ptr()")
Fixes: eaa6bcb71e ("bpf: Introduce bpf_per_cpu_ptr()")
Fixes: 4976b718c3 ("bpf: Introduce pseudo_btf_id")
Signed-off-by: Hao Luo <haoluo@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211217003152.48334-8-haoluo@google.com
Cc: stable@vger.kernel.org # 5.15.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-05-01 17:22:25 +02:00

..

bpf

bpf: Make per_cpu_ptr return rdonly PTR_TO_MEM.

2022-05-01 17:22:25 +02:00

cgroup

cgroup-v1: Correct privileges check in release_agent writes

2022-03-02 11:47:47 +01:00

configs

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debug

kdb: Fix the putarea helper function

2022-04-08 14:23:51 +02:00

dma

dma-mapping: remove bogus test for pfn_valid from dma_map_resource

2022-04-27 14:38:50 +02:00

entry

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events

perf/core: Fix perf_mmap fail when CONFIG_PERF_USE_VMALLOC enabled

2022-04-27 14:38:58 +02:00

gcov

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irq

genirq/affinity: Consider that CPUs on nodes can be unbalanced

2022-04-20 09:34:20 +02:00

kcsan

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livepatch

livepatch: Fix build failure on 32 bits processors

2022-04-08 14:23:29 +02:00

locking

locking/lockdep: Iterate lock_classes directly when reading lockdep files

2022-04-08 14:23:57 +02:00

power

PM: suspend: fix return value of __setup handler

2022-04-08 14:23:07 +02:00

printk

printk: fix return value of printk.devkmsg __setup handler

2022-04-08 14:23:19 +02:00

rcu

rcu: Mark writes to the rcu_segcblist structure's ->flags field

2022-04-08 14:23:55 +02:00

sched

sched/pelt: Fix attach_entity_load_avg() corner case

2022-04-27 14:38:58 +02:00

time

timers: Fix warning condition in __run_timers()

2022-04-20 09:34:21 +02:00

trace

tracing: Have type enum modifications copy the strings

2022-04-08 14:24:13 +02:00

.gitignore

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acct.c

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async.c

Revert "module, async: async_synchronize_full() on module init iff async is used"

2022-02-23 12:03:07 +01:00

audit_fsnotify.c

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audit_tree.c

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audit_watch.c

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audit.c

audit: improve audit queue handling when "audit=1" on cmdline

2022-02-08 18:34:03 +01:00

audit.h

audit: log AUDIT_TIME_* records only from rules

2022-04-08 14:23:06 +02:00

auditfilter.c

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auditsc.c

audit: log AUDIT_TIME_* records only from rules

2022-04-08 14:23:06 +02:00

backtracetest.c

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bounds.c

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capability.c

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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_pm.c

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cpu.c

cpu/hotplug: Remove the 'cpu' member of cpuhp_cpu_state

2022-04-20 09:34:21 +02:00

crash_core.c

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crash_dump.c

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cred.c

ucounts: Base set_cred_ucounts changes on the real user

2022-02-23 12:03:20 +01:00

delayacct.c

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dma.c

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exec_domain.c

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exit.c

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extable.c

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fail_function.c

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fork.c

sched: Fix yet more sched_fork() races

2022-03-08 19:12:49 +01:00

freezer.c

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futex.c

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gen_kheaders.sh

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groups.c

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hung_task.c

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iomem.c

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irq_work.c

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jump_label.c

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kallsyms.c

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kcmp.c

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Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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kcov.c

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kexec_core.c

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kexec_elf.c

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kexec_file.c

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kexec_internal.h

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kexec.c

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kheaders.c

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kmod.c

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kprobes.c

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ksysfs.c

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kthread.c

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latencytop.c

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Makefile

static_call: Don't make __static_call_return0 static

2022-04-13 20:59:28 +02:00

module_signature.c

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module_signing.c

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module-internal.h

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module.c

Revert "module, async: async_synchronize_full() on module init iff async is used"

2022-02-23 12:03:07 +01:00

notifier.c

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nsproxy.c

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padata.c

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panic.c

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params.c

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pid_namespace.c

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pid.c

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profile.c

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ptrace.c

ptrace: Check PTRACE_O_SUSPEND_SECCOMP permission on PTRACE_SEIZE

2022-04-08 14:22:50 +02:00

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_kunit.c

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resource.c

kernel/resource: fix kfree() of bootmem memory again

2022-04-08 14:23:43 +02:00

rseq.c

rseq: Remove broken uapi field layout on 32-bit little endian

2022-04-08 14:23:10 +02:00

scftorture.c

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scs.c

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seccomp.c

seccomp: Invalidate seccomp mode to catch death failures

2022-02-16 12:56:38 +01:00

signal.c

signal: In get_signal test for signal_group_exit every time through the loop

2022-03-08 19:12:34 +01:00

smp.c

smp: Fix offline cpu check in flush_smp_call_function_queue()

2022-04-20 09:34:21 +02:00

smpboot.c

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smpboot.h

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softirq.c

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stackleak.c

gcc-plugins/stackleak: Use noinstr in favor of notrace

2022-02-23 12:03:07 +01:00

stacktrace.c

stacktrace: move filter_irq_stacks() to kernel/stacktrace.c

2022-04-13 20:59:28 +02:00

static_call_inline.c

static_call: Don't make __static_call_return0 static

2022-04-13 20:59:28 +02:00

static_call.c

static_call: Don't make __static_call_return0 static

2022-04-13 20:59:28 +02:00

stop_machine.c

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sys_ni.c

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sys.c

ucounts: Move RLIMIT_NPROC handling after set_user

2022-02-23 12:03:20 +01:00

sysctl-test.c

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sysctl.c

x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting

2022-03-11 12:22:31 +01:00

task_work.c

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taskstats.c

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test_kprobes.c

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torture.c

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tracepoint.c

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tsacct.c

taskstats: Cleanup the use of task->exit_code

2022-01-27 11:05:35 +01:00

ucount.c

ucounts: Handle wrapping in is_ucounts_overlimit

2022-02-23 12:03:20 +01:00

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_namespace.c

ucounts: Fix systemd LimitNPROC with private users regression

2022-03-08 19:12:42 +01:00

user-return-notifier.c

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user.c

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usermode_driver.c

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utsname_sysctl.c

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utsname.c

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watch_queue.c

watch_queue: Free the page array when watch_queue is dismantled

2022-04-08 14:24:11 +02:00

watchdog_hld.c

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watchdog.c

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workqueue_internal.h

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workqueue.c

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