Stanislav Fomichev f0dce1d9b7 bpf: Use kvmalloc for map values in syscall ...

Use kvmalloc/kvfree for temporary value when manipulating a map via
syscall. kmalloc might not be sufficient for percpu maps where the value
is big (and further multiplied by hundreds of CPUs).

Can be reproduced with netcnt test on qemu with "-smp 255".

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20210818235216.1159202-1-sdf@google.com

2021-08-20 00:09:38 +02:00

..

preload

libbpf: Move BPF_SEQ_PRINTF and BPF_SNPRINTF to bpf_helpers.h

2021-05-26 10:45:41 -07:00

arraymap.c

bpf: Add map side support for bpf timers.

2021-07-15 22:31:10 +02:00

bpf_inode_storage.c

bpf: Fix spelling mistakes

2021-05-24 21:13:05 -07:00

bpf_iter.c

bpf: Refactor BPF_PROG_RUN into a function

2021-08-17 00:45:07 +02:00

bpf_local_storage.c

bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete]

2021-02-26 11:51:48 -08:00

bpf_lru_list.c

bpf_lru_list: Read double-checked variable once without lock

2021-02-10 15:54:26 -08:00

bpf_lru_list.h

…

bpf_lsm.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2021-06-17 11:54:56 -07:00

bpf_struct_ops_types.h

…

bpf_struct_ops.c

bpf: Fix fexit trampoline.

2021-03-18 00:22:51 +01:00

bpf_task_storage.c

bpf: Make symbol 'bpf_task_storage_busy' static

2021-03-16 12:24:20 -07:00

btf.c

bpf: Emit better log message if bpf_iter ctx arg btf_id == 0

2021-07-29 15:10:11 -07:00

cgroup.c

bpf: Remove redundant initialization of variable allow

2021-08-17 14:09:12 -07:00

core.c

bpf: Undo off-by-one in interpreter tail call count limit

2021-08-19 18:33:37 +02:00

cpumap.c

bpf: cpumap: Implement generic cpumap

2021-07-07 20:01:45 -07:00

devmap.c

bpf, devmap: Exclude XDP broadcast to master device

2021-08-09 23:25:14 +02:00

disasm.c

bpf: Introduce BPF nospec instruction for mitigating Spectre v4

2021-07-29 00:20:56 +02:00

disasm.h

…

dispatcher.c

…

hashtab.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2021-08-13 06:41:22 -07:00

helpers.c

bpf: Support "%c" in bpf_bprintf_prepare().

2021-08-15 00:13:33 -07:00

inode.c

bpf: Fix regression on BPF_OBJ_GET with non-O_RDWR flags

2021-06-22 14:57:43 +02:00

Kconfig

sock_map: Relax config dependency to CONFIG_NET

2021-07-15 18:17:49 -07:00

local_storage.c

bpf: Increase supported cgroup storage value size

2021-07-27 15:59:29 -07:00

lpm_trie.c

bpf: Allow RCU-protected lookups to happen from bh context

2021-06-24 19:41:15 +02:00

Makefile

bpf: Enable task local storage for tracing programs

2021-02-26 11:51:47 -08:00

map_in_map.c

bpf: Remember BTF of inner maps.

2021-07-15 22:31:10 +02:00

map_in_map.h

…

map_iter.c

…

net_namespace.c

…

offload.c

…

percpu_freelist.c

…

percpu_freelist.h

…

prog_iter.c

…

queue_stack_maps.c

…

reuseport_array.c

bpf: Fix spelling mistakes

2021-05-24 21:13:05 -07:00

ringbuf.c

bpf: Fix false positive kmemleak report in bpf_ringbuf_area_alloc()

2021-06-28 15:57:46 +02:00

stackmap.c

bpf: Refcount task stack in bpf_get_task_stack

2021-04-01 13:58:07 -07:00

syscall.c

bpf: Use kvmalloc for map values in syscall

2021-08-20 00:09:38 +02:00

sysfs_btf.c

…

task_iter.c

bpf: Introduce task_vma bpf_iter

2021-02-12 12:56:53 -08:00

tnum.c

bpf, tnums: Provably sound, faster, and more precise algorithm for tnum_mul

2021-06-01 13:34:15 +02:00

trampoline.c

bpf: Refactor BPF_PROG_RUN into a function

2021-08-17 00:45:07 +02:00

verifier.c

bpf: Refactor BPF_PROG_RUN into a function

2021-08-17 00:45:07 +02:00