Toke Høiland-Jørgensen 6cfb8c2ada cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled ... commit bc23d0e3f717ced21fbfacab3ab887d55e5ba367 upstream. When the kernel is built with CONFIG_DEBUG_PER_CPU_MAPS, the cpumap code can trigger a spurious warning if CONFIG_CPUMASK_OFFSTACK is also set. This happens because in this configuration, NR_CPUS can be larger than nr_cpumask_bits, so the initial check in cpu_map_alloc() is not sufficient to guard against hitting the warning in cpumask_check(). Fix this by explicitly checking the supplied key against the nr_cpumask_bits variable before calling cpu_possible(). Fixes: 6710e11269 ("bpf: introduce new bpf cpu map type BPF_MAP_TYPE_CPUMAP") Reported-by: Xiumei Mu <xmu@redhat.com> Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Tested-by: Xiumei Mu <xmu@redhat.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20200416083120.453718-1-toke@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-05-02 08:48:51 +02:00
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arraymap.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-06-17 20:20:36 -07:00
bpf_lru_list.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206	2019-05-30 11:29:53 -07:00
bpf_lru_list.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206	2019-05-30 11:29:53 -07:00
btf.c	bpf: Explicitly memset some bpf info structures declared on the stack	2020-04-02 15:11:01 +02:00
cgroup.c	bpf: Initialize storage pointers to NULL to prevent freeing garbage pointer	2020-04-01 11:02:11 +02:00
core.c	bpf: Fix use after free in subprog's jited symbol removal	2019-10-22 11:26:09 -07:00
cpumap.c	cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled	2020-05-02 08:48:51 +02:00
devmap.c	bpf, devmap: Pass lockdep expression to RCU lists	2020-02-11 04:35:29 -08:00
disasm.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295	2019-06-05 17:36:38 +02:00
disasm.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295	2019-06-05 17:36:38 +02:00
hashtab.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-06-17 20:20:36 -07:00
helpers.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295	2019-06-05 17:36:38 +02:00
inode.c	bpf: map_seq_next should always increase position index	2020-02-24 08:36:58 +01:00
local_storage.c	bpf: move memory size checks to bpf_map_charge_init()	2019-05-31 16:52:56 -07:00
lpm_trie.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-06-22 08:59:24 -04:00
Makefile	btf: expose BTF info through sysfs	2019-08-13 16:14:15 +02:00
map_in_map.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206	2019-05-30 11:29:53 -07:00
map_in_map.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206	2019-05-30 11:29:53 -07:00
offload.c	bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill	2020-02-28 17:22:27 +01:00
percpu_freelist.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206	2019-05-30 11:29:53 -07:00
percpu_freelist.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206	2019-05-30 11:29:53 -07:00
queue_stack_maps.c	bpf: move memory size checks to bpf_map_charge_init()	2019-05-31 16:52:56 -07:00
reuseport_array.c	bpf: move memory size checks to bpf_map_charge_init()	2019-05-31 16:52:56 -07:00
stackmap.c	bpf/stackmap: Fix deadlock with rq_lock in bpf_get_stack()	2019-12-31 16:44:09 +01:00
syscall.c	bpf: Explicitly memset some bpf info structures declared on the stack	2020-04-02 15:11:01 +02:00
sysfs_btf.c	btf: fix return value check in btf_vmlinux_init()	2019-08-15 22:18:17 -07:00
tnum.c	bpf: Fix incorrect verifier simulation of ARSH under ALU32	2020-01-23 08:22:44 +01:00
verifier.c	bpf: Forbid XADD on spilled pointers for unprivileged users	2020-05-02 08:48:46 +02:00
xskmap.c	bpf/xskmap: Return ERR_PTR for failure case instead of NULL.	2019-09-25 22:14:16 +02:00