Re: [PATCH v6 07/12] samples/bpf/offwaketime_kern: make sched_switch tracepoint args adopt to comm size change
From: Kees Cook <hidden>
Date: 2021-10-25 21:21:30
Also in:
bpf, linux-fsdevel, linux-mm, linux-perf-users, linux-rdma, lkml
On Mon, Oct 25, 2021 at 08:33:10AM +0000, Yafang Shao wrote:
The sched:sched_switch tracepoint is derived from kernel, we should make its args compitable with the kernel. Signed-off-by: Yafang Shao <redacted> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Arnaldo Carvalho de Melo <redacted> Cc: Andrii Nakryiko <redacted> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Kees Cook <redacted> Cc: Petr Mladek <pmladek@suse.com> --- samples/bpf/offwaketime_kern.c | 4 ++--
Seems this should be merged with the prior bpf samples patch? -Kees
quoted hunk ↗ jump to hunk
1 file changed, 2 insertions(+), 2 deletions(-)diff --git a/samples/bpf/offwaketime_kern.c b/samples/bpf/offwaketime_kern.c index 4866afd054da..eb4d94742e6b 100644 --- a/samples/bpf/offwaketime_kern.c +++ b/samples/bpf/offwaketime_kern.c@@ -113,11 +113,11 @@ static inline int update_counts(void *ctx, u32 pid, u64 delta) /* taken from /sys/kernel/debug/tracing/events/sched/sched_switch/format */ struct sched_switch_args { unsigned long long pad; - char prev_comm[16]; + char prev_comm[TASK_COMM_LEN]; int prev_pid; int prev_prio; long long prev_state; - char next_comm[16]; + char next_comm[TASK_COMM_LEN]; int next_pid; int next_prio; };-- 2.17.1
-- Kees Cook