Eric Dumazet 75134f16e7 bpf: Add schedule points in batch ops ... syzbot reported various soft lockups caused by bpf batch operations. INFO: task kworker/1:1:27 blocked for more than 140 seconds. INFO: task hung in rcu_barrier Nothing prevents batch ops to process huge amount of data, we need to add schedule points in them. Note that maybe_wait_bpf_programs(map) calls from generic_map_delete_batch() can be factorized by moving the call after the loop. This will be done later in -next tree once we get this fix merged, unless there is strong opinion doing this optimization sooner. Fixes: aa2e93b8e5 ("bpf: Add generic support for update and delete batch ops") Fixes: cb4d03ab49 ("bpf: Add generic support for lookup batch op") Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Stanislav Fomichev <sdf@google.com> Acked-by: Brian Vazquez <brianvv@google.com> Link: https://lore.kernel.org/bpf/20220217181902.808742-1-eric.dumazet@gmail.com		2022-02-17 10:48:26 -08:00
..
preload	bpf/preload: Clean up .gitignore and "clean-files" target	2021-10-20 10:39:04 -07:00
arraymap.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-10-28 10:43:58 -07:00
bloom_filter.c	bpf: Add missing map_get_next_key method to bloom filter map.	2021-12-29 09:38:31 -08:00
bpf_inode_storage.c	bpf: Allow bpf_local_storage to be used by sleepable programs	2021-12-29 17:54:40 -08:00
bpf_iter.c	bpf: Add bpf_loop helper	2021-11-30 10:56:28 -08:00
bpf_local_storage.c	bpf: Allow bpf_local_storage to be used by sleepable programs	2021-12-29 17:54:40 -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: Fix a typo "inacitve" -> "inactive"	2020-04-06 21:54:10 +02:00
bpf_lsm.c	bpf: Fix renaming task_getsecid_subj->current_getsecid_subj.	2022-01-24 20:20:51 -08:00
bpf_struct_ops.c	bpf: Rename btf_member accessors.	2021-12-02 11:18:34 -08:00
bpf_struct_ops_types.h	bpf: Add dummy BPF STRUCT_OPS for test purpose	2021-11-01 14:10:00 -07:00
bpf_task_storage.c	bpf: Allow bpf_local_storage to be used by sleepable programs	2021-12-29 17:54:40 -08:00
btf.c	bpf: Fix crash due to out of bounds access into reg2btf_ids.	2022-02-16 12:46:51 -08:00
cgroup.c	bpf: Add MEM_RDONLY for helper args that are pointers to rdonly mem.	2021-12-18 13:27:41 -08:00
core.c	bpf, docs: Prune all references to "internal BPF"	2021-11-30 10:52:11 -08:00
cpumap.c	xdp: Move conversion to xdp_frame out of map functions	2022-01-05 19:46:32 -08:00
devmap.c	xdp: Move conversion to xdp_frame out of map functions	2022-01-05 19:46:32 -08:00
disasm.c	bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause	2021-09-02 14:49:23 +02:00
disasm.h	bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause	2021-09-02 14:49:23 +02:00
dispatcher.c	bpf: Remove bpf_image tree	2020-03-13 12:49:52 -07:00
hashtab.c	bpf: Replace callers of BPF_CAST_CALL with proper function typedef	2021-09-28 16:27:18 -07:00
helpers.c	bpf: Emit bpf_timer in vmlinux BTF	2022-02-11 13:21:47 -08:00
inode.c	bpf: Fix mount source show for bpffs	2022-01-11 10:48:17 +01:00
Kconfig	bpf: Disallow unprivileged bpf by default	2021-11-01 17:06:47 +01:00
local_storage.c	bpf: Use struct_size() helper	2021-12-21 15:35:48 -08:00
lpm_trie.c	bpf: Fix typo in a comment in bpf lpm_trie.	2021-12-30 18:42:34 -08:00
Makefile	bpf: Prepare relo_core.c for kernel duty.	2021-12-02 11:18:34 -08:00
map_in_map.c	bpf: Remember BTF of inner maps.	2021-07-15 22:31:10 +02:00
map_in_map.h	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
map_iter.c	bpf: Introduce MEM_RDONLY flag	2021-12-18 13:27:41 -08:00
mmap_unlock_work.h	bpf: Introduce helper bpf_find_vma	2021-11-07 11:54:51 -08:00
net_namespace.c	net: Add includes masked by netdevice.h including uapi/bpf.h	2021-12-29 20:03:05 -08:00
offload.c	bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill	2020-02-17 16:53:49 +01:00
percpu_freelist.c	bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI	2020-10-06 00:04:11 +02:00
percpu_freelist.h	bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI	2020-10-06 00:04:11 +02:00
prog_iter.c	bpf: Refactor bpf_iter_reg to have separate seq_info member	2020-07-25 20:16:32 -07:00
queue_stack_maps.c	bpf: Eliminate rlimit-based memory accounting for queue_stack_maps maps	2020-12-02 18:32:46 -08:00
reuseport_array.c	bpf: Use struct_size() helper	2021-12-21 15:35:48 -08:00
ringbuf.c	bpf: Use VM_MAP instead of VM_ALLOC for ringbuf	2022-02-02 23:15:24 -08:00
stackmap.c	bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()	2022-01-15 12:21:23 +11:00
syscall.c	bpf: Add schedule points in batch ops	2022-02-17 10:48:26 -08:00
sysfs_btf.c	bpf: Load and verify kernel module BTFs	2020-11-10 15:25:53 -08:00
task_iter.c	bpf: Introduce btf_tracing_ids	2021-11-12 10:19:09 -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: Fix possible race in inc_misses_counter	2022-01-25 17:50:03 -08:00
verifier.c	bpf: Fix ringbuf memory type confusion when passing to helpers	2022-01-19 01:21:46 +01:00