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Date: Wed, 05 Aug 2020 22:41:30 -0700 From: John Fastabend <john.fastabend@...il.com> To: Muchun Song <songmuchun@...edance.com>, rostedt@...dmis.org, naveen.n.rao@...ux.ibm.com, anil.s.keshavamurthy@...el.com, davem@...emloft.net, mhiramat@...nel.org, ast@...nel.org, daniel@...earbox.net, kafai@...com, songliubraving@...com, yhs@...com, andriin@...com, john.fastabend@...il.com, kpsingh@...omium.org, sfr@...b.auug.org.au, mingo@...nel.org, akpm@...ux-foundation.org Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org, bpf@...r.kernel.org, Muchun Song <songmuchun@...edance.com> Subject: RE: [PATCH] kprobes: fix compiler warning for !CONFIG_KPROBES_ON_FTRACE Muchun Song wrote: > Fix compiler warning(as show below) for !CONFIG_KPROBES_ON_FTRACE. > > kernel/kprobes.c: In function 'kill_kprobe': > kernel/kprobes.c:1116:33: warning: statement with no effect > [-Wunused-value] > 1116 | #define disarm_kprobe_ftrace(p) (-ENODEV) > | ^ > kernel/kprobes.c:2154:3: note: in expansion of macro > 'disarm_kprobe_ftrace' > 2154 | disarm_kprobe_ftrace(p); > > Link: https://lore.kernel.org/r/20200805142136.0331f7ea@canb.auug.org.au > > Reported-by: Stephen Rothwell <sfr@...b.auug.org.au> > Fixes: 0cb2f1372baa ("kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler") > Signed-off-by: Muchun Song <songmuchun@...edance.com> > --- Acked-by: John Fastabend <john.fastabend@...il.com>
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