diff options
| author | Rong Tao <rongtao@cestc.cn> | 2024-08-27 12:30:30 +0800 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2024-08-27 16:17:44 -0700 |
| commit | d205d4af3a5ee840edecfa5f6b389d7d03b0786d (patch) | |
| tree | efdc745b1ded9aca17686904040bae56f53903d3 | |
| parent | ddc3d98807dca05ad10f4c76d13019c428302719 (diff) | |
samples/bpf: tracex4: Fix failed to create kretprobe 'kmem_cache_alloc_node+0x0'
commit 7bd230a26648 ("mm/slab: enable slab allocation tagging for kmalloc
and friends") [1] swap kmem_cache_alloc_node() to
kmem_cache_alloc_node_noprof().
linux/samples/bpf$ sudo ./tracex4
libbpf: prog 'bpf_prog2': failed to create kretprobe
'kmem_cache_alloc_node+0x0' perf event: No such file or directory
ERROR: bpf_program__attach failed
Signed-off-by: Rong Tao <rongtao@cestc.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://github.com/torvalds/linux/commit/7bd230a26648ac68ab3731ebbc449090f0ac6a37
Link: https://lore.kernel.org/bpf/tencent_34E5BCCAC5ABF3E81222AD81B1D05F16DE06@qq.com
| -rw-r--r-- | samples/bpf/tracex4.bpf.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/samples/bpf/tracex4.bpf.c b/samples/bpf/tracex4.bpf.c index ca826750901a..d786492fd926 100644 --- a/samples/bpf/tracex4.bpf.c +++ b/samples/bpf/tracex4.bpf.c @@ -33,13 +33,13 @@ int bpf_prog1(struct pt_regs *ctx) return 0; } -SEC("kretprobe/kmem_cache_alloc_node") +SEC("kretprobe/kmem_cache_alloc_node_noprof") int bpf_prog2(struct pt_regs *ctx) { long ptr = PT_REGS_RC(ctx); long ip = 0; - /* get ip address of kmem_cache_alloc_node() caller */ + /* get ip address of kmem_cache_alloc_node_noprof() caller */ BPF_KRETPROBE_READ_RET_IP(ip, ctx); struct pair v = { |