diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2021-04-09 20:46:01 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-04-09 20:48:35 -0700 |
| commit | 8859a44ea0df92bccdc942ef15781ebbfe0ad9f3 (patch) | |
| tree | bffdd602a7d6ad5060df41789af75965f9d58270 /kernel/bpf/stackmap.c | |
| parent | 6c5e6b4ccc1bb9ac56579a9aed25d517d2318be6 (diff) | |
| parent | 4e04e7513b0fa2fe8966a1c83fb473f1667e2810 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Conflicts:
MAINTAINERS
- keep Chandrasekar
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
- simple fix + trust the code re-added to param.c in -next is fine
include/linux/bpf.h
- trivial
include/linux/ethtool.h
- trivial, fix kdoc while at it
include/linux/skmsg.h
- move to relevant place in tcp.c, comment re-wrapped
net/core/skmsg.c
- add the sk = sk // sk = NULL around calls
net/tipc/crypto.c
- trivial
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'kernel/bpf/stackmap.c')
| -rw-r--r-- | kernel/bpf/stackmap.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c index be35bfb7fb13..6fbc2abe9c91 100644 --- a/kernel/bpf/stackmap.c +++ b/kernel/bpf/stackmap.c @@ -517,9 +517,17 @@ const struct bpf_func_proto bpf_get_stack_proto = { BPF_CALL_4(bpf_get_task_stack, struct task_struct *, task, void *, buf, u32, size, u64, flags) { - struct pt_regs *regs = task_pt_regs(task); + struct pt_regs *regs; + long res; - return __bpf_get_stack(regs, task, NULL, buf, size, flags); + if (!try_get_task_stack(task)) + return -EFAULT; + + regs = task_pt_regs(task); + res = __bpf_get_stack(regs, task, NULL, buf, size, flags); + put_task_stack(task); + + return res; } BTF_ID_LIST_SINGLE(bpf_get_task_stack_btf_ids, struct, task_struct) |