zf1575192187

bpftrace support bpf_tail_call

1

Bpftrace has rich trace functions, but its trace ability in the network is weak, and it does not support tailcall, so it cannot be linked with other projects. We have...

sidecar: functions with isra * are ignored

3

Use retsnoop -e '*sys_sendto' -a ':net/ipv4/*.c' -S -T -l -vv cat /proc/kallsyms | grep udp_send_skb ffffffff9e2b5630 t udp_send_skb.isra.49 nm vmlinux | grep udp_send_skb ffffffff816b45e0 t udp_send_skb.isra.49 GCC has optimized udp_send_skb...

arm64-kernel-5.4-crash-7.3.0-run-directly-error

3

crash crash: cannot determine VA_BITS_ACTUAL: please use /proc/kcore crash /proc/kcore /usr/lib/debug/boot/vmlinux-5.4.56.bsk.7-arm64 --machdep vabits_actual=48 crash 7.3.0 Copyright (C) 2002-2021 Red Hat, Inc. Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation Copyright...

Error after specifying header file on debian10

3

### What reproduces the bug? Provide code if possible. ``` ./bpftrace -e 'tracepoint:sched:sched_switch { $task = (struct task_struct *)curtask; if ($task->state & 0x02) { @[kstack] = count(); } }' --include...