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Fix the key_gzip offsets

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This commit is contained in:
M. Mert Yildiran 2022-06-02 01:48:09 +03:00
parent 9868a7723a
commit 308d3cfd87
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GPG Key ID: D42ADB236521BF7A
3 changed files with 4 additions and 4 deletions
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8
tap/tlstapper/bpf/golang_uprobes.c
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@ -138,8 +138,8 @@ static __always_inline int golang_net_http_gzipreader_read_uprobe(struct pt_regs
__u64 pid_tgid = bpf_get_current_pid_tgid(); __u64 pid_tgid = bpf_get_current_pid_tgid();
__u64 pid = pid_tgid >> 32; __u64 pid = pid_tgid >> 32;
__u32 key_gzip; __u32 key_gzip;
// Address at ctx->rsp + 0x150 is common between golang_net_http_gzipreader_read_uprobe and golang_net_http_dialconn_uprobe // Address at ctx->rsp + 0x1b0 is common between golang_net_http_gzipreader_read_uprobe and golang_net_http_dialconn_uprobe
__u32 status = bpf_probe_read(&key_gzip, sizeof(key_gzip), stack_addr + 0x150); __u32 status = bpf_probe_read(&key_gzip, sizeof(key_gzip), stack_addr + 0x1b0);
if (status < 0) { if (status < 0) {
bpf_printk("[golang_net_http_gzipreader_read_uprobe] error reading key_gzip: %d", status); bpf_printk("[golang_net_http_gzipreader_read_uprobe] error reading key_gzip: %d", status);
return 0; return 0;
@ -226,8 +226,8 @@ static __always_inline int golang_net_http_dialconn_uprobe(struct pt_regs *ctx)
} }
__u32 key_gzip; __u32 key_gzip;
// Address at ctx->rsp + 0x1d0 is common between golang_net_http_gzipreader_read_uprobe and golang_net_http_dialconn_uprobe // Address at ctx->rsp + 0x58 is common between golang_net_http_gzipreader_read_uprobe and golang_net_http_dialconn_uprobe
status = bpf_probe_read(&key_gzip, sizeof(key_gzip), stack_addr + 0x1d0); status = bpf_probe_read(&key_gzip, sizeof(key_gzip), stack_addr + 0x58);
if (status < 0) { if (status < 0) {
bpf_printk("[golang_net_http_dialconn_uprobe] error reading key_gzip: %d", status); bpf_printk("[golang_net_http_dialconn_uprobe] error reading key_gzip: %d", status);
return 0; return 0;

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tap/tlstapper/tlstapper_bpfeb.o
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tap/tlstapper/tlstapper_bpfel.o
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