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Lorenz Bauer ffb9d5c48b bpf: verifier: Allocate idmap scratch in verifier env 
commit c9e73e3d2b upstream.

func_states_equal makes a very short lived allocation for idmap,
probably because it's too large to fit on the stack. However the
function is called quite often, leading to a lot of alloc / free
churn. Replace the temporary allocation with dedicated scratch
space in struct bpf_verifier_env.

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://lore.kernel.org/bpf/20210429134656.122225-4-lmb@cloudflare.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-04 12:46:45 +02:00
..
bpf
bpf: verifier: Allocate idmap scratch in verifier env
2021-08-04 12:46:45 +02:00
cgroup
cgroup1: fix leaked context root causing sporadic NULL deref in LTP
2021-07-31 08:16:11 +02:00
configs
…
debug
kgdb: fix to kill breakpoints on initmem after boot
2021-03-04 11:38:46 +01:00
dma
dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}
2021-07-28 14:35:38 +02:00
entry
x86/entry: Move nmi entry/exit into common code
2021-03-17 17:06:36 +01:00
events
perf: Fix data race between pin_count increment/decrement
2021-06-16 12:01:45 +02:00
gcov
gcov: re-fix clang-11+ support
2021-04-14 08:41:58 +02:00
irq
genirq/matrix: Prevent allocation counter corruption
2021-05-11 14:47:17 +02:00
kcsan
kcsan: Fix debugfs initcall return type
2021-05-26 12:06:54 +02:00
livepatch
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locking
lockdep: Fix wait-type for empty stack
2021-07-14 16:56:10 +02:00
power
PM: EM: postpone creating the debugfs dir till fs_initcall
2021-03-30 14:32:04 +02:00
printk
printk: fix deadlock when kernel panic
2021-03-04 11:38:41 +01:00
rcu
rcu-tasks: Don't delete holdouts within trc_wait_for_one_reader()
2021-07-31 08:16:11 +02:00
sched
sched/fair: Fix CFS bandwidth hrtimer expiry type
2021-07-25 14:36:17 +02:00
time
posix-cpu-timers: Fix rearm racing against process tick
2021-07-28 14:35:45 +02:00
trace
tracing: Synthetic event field_pos is an index not a boolean
2021-07-28 14:35:45 +02:00
.gitignore
kbuild: update config_data.gz only when the content of .config is changed
2021-05-11 14:47:37 +02:00
acct.c
…
async.c
…
audit_fsnotify.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit_tree.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit_watch.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit.c
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audit.h
…
auditfilter.c
…
auditsc.c
…
backtracetest.c
…
bounds.c
…
capability.c
…
compat.c
…
configs.c
…
context_tracking.c
…
cpu_pm.c
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cpu.c
cpu/hotplug: Cure the cpusets trainwreck
2021-07-19 09:44:59 +02:00
crash_core.c
crash_core, vmcoreinfo: append 'SECTION_SIZE_BITS' to vmcoreinfo
2021-06-23 14:42:52 +02:00
crash_dump.c
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cred.c
cred: add missing return error code when set_cred_ucounts() failed
2021-07-14 16:56:55 +02:00
delayacct.c
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dma.c
…
exec_domain.c
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exit.c
kernel/io_uring: cancel io_uring before task works
2021-01-30 13:55:18 +01:00
extable.c
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fail_function.c
fail_function: Remove a redundant mutex unlock
2020-11-19 11:58:16 -08:00
fork.c
sched/core: Initialize the idle task with preemption disabled
2021-07-14 16:55:50 +02:00
freezer.c
Revert "kernel: freezer should treat PF_IO_WORKER like PF_KTHREAD for freezing"
2021-04-07 15:00:14 +02:00
futex.c
mm, futex: fix shared futex pgoff on shmem huge page
2021-06-30 08:47:29 -04:00
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
jump_label: Fix jump_label_text_reserved() vs __init
2021-07-20 16:05:58 +02:00
kallsyms.c
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kcmp.c
exec: Transform exec_update_mutex into a rw_semaphore
2021-01-09 13:46:24 +01:00
Kconfig.freezer
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Kconfig.hz
…
Kconfig.locks
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Kconfig.preempt
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kcov.c
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kexec_core.c
kernel: kexec: remove the lock operation of system_transition_mutex
2021-02-03 23:28:37 +01:00
kexec_elf.c
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kexec_file.c
kernel: kexec_file: fix error return code of kexec_calculate_store_digests()
2021-05-19 10:13:09 +02:00
kexec_internal.h
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kexec.c
…
kheaders.c
…
kmod.c
…
kprobes.c
kprobes: Fix to delay the kprobes jump optimization
2021-03-04 11:38:35 +01:00
ksysfs.c
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kthread.c
kthread_worker: fix return value when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync()
2021-07-14 16:56:02 +02:00
latencytop.c
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Makefile
kbuild: update config_data.gz only when the content of .config is changed
2021-05-11 14:47:37 +02:00
module_signature.c
module: harden ELF info handling
2021-03-25 09:04:11 +01:00
module_signing.c
module: harden ELF info handling
2021-03-25 09:04:11 +01:00
module-internal.h
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module.c
module: limit enabling module.sig_enforce
2021-06-30 08:47:15 -04:00
notifier.c
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nsproxy.c
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padata.c
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panic.c
panic: don't dump stack twice on warn
2020-11-14 11:26:04 -08:00
params.c
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pid_namespace.c
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pid.c
exec: Transform exec_update_mutex into a rw_semaphore
2021-01-09 13:46:24 +01:00
profile.c
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ptrace.c
ptrace: make ptrace() fail if the tracee changed its pid unexpectedly
2021-05-26 12:06:49 +02:00
range.c
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reboot.c
reboot: fix overflow parsing reboot cpu number
2020-11-14 11:26:03 -08:00
regset.c
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relay.c
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resource.c
kernel/resource: make walk_mem_res() find all busy IORESOURCE_MEM resources
2021-05-19 10:13:09 +02:00
rseq.c
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scftorture.c
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scs.c
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seccomp.c
seccomp: Refactor notification handler to prepare for new semantics
2021-06-03 09:00:31 +02:00
signal.c
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smp.c
smp: Fix smp_call_function_single_async prototype
2021-05-14 09:50:46 +02:00
smpboot.c
sched/core: Initialize the idle task with preemption disabled
2021-07-14 16:55:50 +02:00
smpboot.h
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softirq.c
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stackleak.c
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stacktrace.c
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static_call.c
static_call: Fix static_call_text_reserved() vs __init
2021-07-20 16:05:58 +02:00
stop_machine.c
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sys_ni.c
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sys.c
Add a reference to ucounts for each cred
2021-07-14 16:55:48 +02:00
sysctl-test.c
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sysctl.c
sysctl.c: fix underflow value setting risk in vm_table
2021-03-17 17:06:25 +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
tracepoints: Update static_call before tp_funcs when adding a tracepoint
2021-07-28 14:35:45 +02:00
tsacct.c
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ucount.c
Add a reference to ucounts for each cred
2021-07-14 16:55:48 +02:00
uid16.c
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uid16.h
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umh.c
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up.c
smp: Fix smp_call_function_single_async prototype
2021-05-14 09:50:46 +02:00
user_namespace.c
Add a reference to ucounts for each cred
2021-07-14 16:55:48 +02:00
user-return-notifier.c
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user.c
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usermode_driver.c
bpf: Fix umd memory leak in copy_process()
2021-03-30 14:32:03 +02:00
utsname_sysctl.c
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utsname.c
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watch_queue.c
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watchdog_hld.c
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watchdog.c
watchdog: fix barriers when printing backtraces from all CPUs
2021-05-19 10:13:00 +02:00
workqueue_internal.h
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workqueue.c
workqueue: fix UAF in pwq_unbound_release_workfn()
2021-07-31 08:16:11 +02:00