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Jakub Sitnicki 98e948fb60 bpf: Allow delete from sockmap/sockhash only if update is allowed 
We have seen an influx of syzkaller reports where a BPF program attached to
a tracepoint triggers a locking rule violation by performing a map_delete
on a sockmap/sockhash.

We don't intend to support this artificial use scenario. Extend the
existing verifier allowed-program-type check for updating sockmap/sockhash
to also cover deleting from a map.

From now on only BPF programs which were previously allowed to update
sockmap/sockhash can delete from these map types.

Fixes: ff9105993240 ("bpf, sockmap: Prevent lock inversion deadlock in map delete elem")
Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Reported-by: syzbot+ec941d6e24f633a59172@syzkaller.appspotmail.com
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: syzbot+ec941d6e24f633a59172@syzkaller.appspotmail.com
Acked-by: John Fastabend <john.fastabend@gmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=ec941d6e24f633a59172
Link: https://lore.kernel.org/bpf/20240527-sockmap-verify-deletes-v1-1-944b372f2101@cloudflare.com
2024-05-27 19:33:40 +02:00
..
bpf
bpf: Allow delete from sockmap/sockhash only if update is allowed
2024-05-27 19:33:40 +02:00
cgroup
cgroup/rstat: add cgroup_rstat_cpu_lock helpers and tracepoints
2024-05-14 09:43:17 -10:00
configs
hardening updates for 6.10-rc1
2024-05-13 14:14:05 -07:00
debug
kdb: Fix a potential buffer overflow in kdb_local()
2024-01-17 17:19:06 +00:00
dma
swiotlb: initialise restricted pool list_head when SWIOTLB_DYNAMIC=y
2024-05-02 14:57:04 +02:00
entry
entry: Respect changes to system call number by trace_sys_enter()
2024-03-12 13:23:32 +01:00
events
Probes updates for v6.10:
2024-05-17 18:29:30 -07:00
futex
printk: Change type of CONFIG_BASE_SMALL to bool
2024-05-06 17:39:09 +02:00
gcov
gcov: annotate struct gcov_iterator with __counted_by
2023-10-18 14:43:22 -07:00
irq
Updates for the interrupt subsystem:
2024-05-14 09:47:14 -07:00
kcsan
kcsan, compiler_types: Introduce __data_racy type qualifier
2024-05-07 11:39:50 -07:00
livepatch
livepatch: Rename KLP_* to KLP_TRANSITION_*
2024-05-09 15:48:01 +02:00
locking
locking/pvqspinlock: Use try_cmpxchg() in qspinlock_paravirt.h
2024-04-12 11:42:39 +02:00
module
mm/execmem, arch: convert remaining overrides of module_alloc to execmem
2024-05-14 00:31:43 -07:00
power
cgroup: Changes for v6.10
2024-05-15 17:06:08 -07:00
printk
sysctl changes for v6.10-rc1
2024-05-17 17:31:24 -07:00
rcu
Merge branches 'fixes.2024.04.15a', 'misc.2024.04.12a', 'rcu-sync-normal-improve.2024.04.15a', 'rcu-tasks.2024.04.15a' and 'rcutorture.2024.04.15a' into rcu-merge.2024.04.15a
2024-05-01 13:04:02 +02:00
sched
sysctl changes for v6.10-rc1
2024-05-17 17:31:24 -07:00
time
sysctl changes for v6.10-rc1
2024-05-17 17:31:24 -07:00
trace
bpf: remove unnecessary rcu_read_{lock,unlock}() in multi-uprobe attach logic
2024-05-25 10:46:02 -07:00
.gitignore
…
acct.c
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
async.c
async: Use a dedicated unbound workqueue with raised min_active
2024-02-09 11:13:59 -10:00
audit_fsnotify.c
…
audit_tree.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
audit_watch.c
audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()
2023-11-14 17:34:27 -05:00
audit.c
audit: use KMEM_CACHE() instead of kmem_cache_create()
2024-01-25 10:12:22 -05:00
audit.h
audit: correct audit_filter_inodes() definition
2023-07-21 12:17:25 -04:00
auditfilter.c
audit: remove unnecessary assignment in audit_dupe_lsm_field()
2024-01-25 09:59:27 -05:00
auditsc.c
audit,io_uring: io_uring openat triggers audit reference count underflow
2023-10-13 18:34:46 +02:00
backtracetest.c
backtracetest: Convert from tasklet to BH workqueue
2024-02-05 13:22:34 -10:00
bounds.c
bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS
2024-04-29 08:29:29 -07:00
capability.c
lsm: constify the 'target' parameter in security_capget()
2023-08-08 16:48:47 -04:00
cfi.c
…
compat.c
sched_getaffinity: don't assume 'cpumask_size()' is fully initialized
2023-03-14 19:32:38 -07:00
configs.c
…
context_tracking.c
context_tracking: Make context_tracking_key __ro_after_init
2024-03-22 11:18:18 +01:00
cpu_pm.c
cpuidle, cpu_pm: Remove RCU fiddling from cpu_pm_{enter,exit}()
2023-01-13 11:48:15 +01:00
cpu.c
cgroup: Changes for v6.10
2024-05-15 17:06:08 -07:00
crash_core.c
crash: add a new kexec flag for hotplug support
2024-04-23 14:59:01 +10:00
crash_reserve.c
crash: use macro to add crashk_res into iomem early for specific arch
2024-03-26 11:14:12 -07:00
cred.c
cred: Use KMEM_CACHE() instead of kmem_cache_create()
2024-02-23 17:33:31 -05:00
delayacct.c
delayacct: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:54 +02:00
dma.c
…
elfcorehdr.c
crash: remove dependency of FA_DUMP on CRASH_DUMP
2024-02-23 17:48:22 -08:00
exec_domain.c
…
exit.c
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
exit.h
exit: add internal include file with helpers
2023-09-21 12:03:50 -06:00
extable.c
…
fail_function.c
kernel/fail_function: fix memory leak with using debugfs_lookup()
2023-02-08 13:36:22 +01:00
fork.c
fork: defer linking file vma until vma is fully initialized
2024-04-16 15:39:51 -07:00
freezer.c
Linux 6.7-rc6
2023-12-23 15:52:13 +01:00
gen_kheaders.sh
Revert "kheaders: substituting --sort in archive creation"
2023-05-28 16:20:21 +09:00
groups.c
groups: Convert group_info.usage to refcount_t
2023-09-29 11:28:39 -07:00
hung_task.c
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
iomem.c
kernel/iomem.c: remove __weak ioremap_cache helper
2023-08-21 13:37:28 -07:00
irq_work.c
trace: Add trace_ipi_send_cpu()
2023-03-24 11:01:29 +01:00
jump_label.c
jump_label,module: Don't alloc static_key_mod for __ro_after_init keys
2024-03-22 11:18:16 +01:00
kallsyms_internal.h
…
kallsyms_selftest.c
mm/vmalloc: remove vmap_area_list
2024-02-23 17:48:19 -08:00
kallsyms_selftest.h
…
kallsyms.c
kallsyms: Change func signature for cleanup_symbol_name()
2023-08-25 15:00:36 -07:00
kcmp.c
file: convert to SLAB_TYPESAFE_BY_RCU
2023-10-19 11:02:48 +02:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.kexec
crash: clean up kdump related config items
2024-02-23 17:48:22 -08:00
Kconfig.locks
…
Kconfig.preempt
…
kcov.c
kcov: add prototypes for helper functions
2023-06-09 17:44:17 -07:00
kexec_core.c
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
kexec_elf.c
…
kexec_file.c
crash: add a new kexec flag for hotplug support
2024-04-23 14:59:01 +10:00
kexec_internal.h
crash: remove dependency of FA_DUMP on CRASH_DUMP
2024-02-23 17:48:22 -08:00
kexec.c
crash: add a new kexec flag for hotplug support
2024-04-23 14:59:01 +10:00
kheaders.c
kheaders: Use array declaration instead of char
2023-03-24 20:10:59 -07:00
kprobes.c
kprobe/ftrace: fix build error due to bad function definition
2024-05-17 19:17:55 -07:00
ksyms_common.c
kallsyms: make kallsyms_show_value() as generic function
2023-06-08 12:27:20 -07:00
ksysfs.c
Driver core changes for 6.9-rc1
2024-03-21 13:34:15 -07:00
kthread.c
kunit: Handle test faults
2024-05-06 14:22:02 -06:00
latencytop.c
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
Makefile
crash: split crash dumping code out from kexec_core.c
2024-02-23 17:48:22 -08:00
module_signature.c
…
notifier.c
notifiers: add tracepoints to the notifiers infrastructure
2023-04-08 13:45:38 -07:00
nsproxy.c
pidfd: add pidfs
2024-03-01 12:23:37 +01:00
numa.c
kernel/numa.c: Move logging out of numa.h
2023-12-20 19:26:30 -05:00
padata.c
padata: Disable BH when taking works lock on MT path
2024-04-12 15:07:51 +08:00
panic.c
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
params.c
params: Fix multi-line comment style
2023-12-01 09:51:44 -08:00
pid_namespace.c
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
pid_sysctl.h
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
pid.c
pidfs: remove config option
2024-03-13 12:53:53 -07:00
profile.c
profiling: Remove create_prof_cpu_mask().
2024-04-27 11:17:48 -07:00
ptrace.c
ptrace_attach: shift send(SIGSTOP) into ptrace_set_stopped()
2024-02-22 15:38:52 -08:00
range.c
…
reboot.c
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
regset.c
…
relay.c
kernel: relay: remove relay_file_splice_read dead code, doesn't work
2023-12-29 12:22:27 -08:00
resource_kunit.c
…
resource.c
Quite a lot of kexec work this time around. Many singleton patches in
2024-01-09 11:46:20 -08:00
rseq.c
rseq: Extend struct rseq with per-memory-map concurrency ID
2022-12-27 12:52:12 +01:00
scftorture.c
scftorture: Pause testing after memory-allocation failure
2023-07-14 15:02:57 -07:00
scs.c
…
seccomp.c
sysctl changes for v6.10-rc1
2024-05-17 17:31:24 -07:00
signal.c
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
smp.c
CSD lock commits for v6.7
2023-10-30 17:56:53 -10:00
smpboot.c
kthread: add kthread_stop_put
2023-10-04 10:41:57 -07:00
smpboot.h
…
softirq.c
softirq: Fix suspicious RCU usage in __do_softirq()
2024-04-29 05:03:51 +02:00
stackleak.c
sysctl changes for v6.10-rc1
2024-05-17 17:31:24 -07:00
stacktrace.c
stacktrace: fix kernel-doc typo
2023-12-29 12:22:29 -08:00
static_call_inline.c
…
static_call.c
…
stop_machine.c
…
sys_ni.c
lsm/stable-6.8 PR 20240105
2024-01-09 12:57:46 -08:00
sys.c
powerpc/dexcr: Add DEXCR prctl interface
2024-05-06 22:04:31 +10:00
sysctl-test.c
…
sysctl.c
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
task_work.c
task_work: add kerneldoc annotation for 'data' argument
2023-09-19 13:21:32 -07:00
taskstats.c
taskstats: fill_stats_for_tgid: use for_each_thread()
2023-10-04 10:41:57 -07:00
torture.c
torture: Print out torture module parameters
2023-09-24 17:24:01 +02:00
tracepoint.c
tracepoint: Allow livepatch module add trace event
2023-02-18 14:34:36 -05:00
tsacct.c
…
ucount.c
sysctl changes for v6.10-rc1
2024-05-17 17:31:24 -07:00
uid16.c
…
uid16.h
…
umh.c
umh: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
up.c
smp: Change function signatures to use call_single_data_t
2023-09-13 14:59:24 +02:00
user_namespace.c
user_namespace: remove unnecessary NULL values from kbuf
2024-02-22 15:38:52 -08:00
user-return-notifier.c
…
user.c
printk: Change type of CONFIG_BASE_SMALL to bool
2024-05-06 17:39:09 +02:00
usermode_driver.c
…
utsname_sysctl.c
kernel misc: Remove the now superfluous sentinel elements from ctl_table array
2024-04-24 09:43:53 +02:00
utsname.c
…
vhost_task.c
vhost: Fix worker hangs due to missed wake up calls
2023-06-08 15:43:09 -04:00
vmcore_info.c
mm: turn folio_test_hugetlb into a PageType
2024-04-24 19:34:26 -07:00
watch_queue.c
watch_queue: fix kcalloc() arguments order
2023-12-21 13:17:54 +01:00
watchdog_buddy.c
watchdog/hardlockup: move SMP barriers from common code to buddy code
2023-06-19 16:25:28 -07:00
watchdog_perf.c
watchdog/perf: add a weak function for an arch to detect if perf can use NMIs
2023-06-09 17:44:21 -07:00
watchdog.c
sysctl changes for v6.10-rc1
2024-05-17 17:31:24 -07:00
workqueue_internal.h
workqueue: Drop the special locking rule for worker->flags and worker_pool->flags
2023-08-07 15:57:22 -10:00
workqueue.c
Merge branch 'for-6.10' into test-merge-for-6.10
2024-05-15 11:40:33 -10:00