Commit b9b76dfa authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Frederic Weisbecker
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tracing: Fix null pointer deref with SEND_SIG_FORCED



BUG: unable to handle kernel NULL pointer dereference at
	0000000000000006
IP: [<ffffffff8107bd37>] ftrace_raw_event_signal_generate+0x87/0x140

TP_STORE_SIGINFO() forgets about SEND_SIG_FORCED, fix.

We should probably export is_si_special() and change TP_STORE_SIGINFO()
to use it in the longer term.
Signed-off-by: default avatarOleg Nesterov <oleg@redhat.com>
Acked-by: default avatarRoland McGrath <roland@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: 2.6.33.x-2.6.34.x <stable@kernel.org>
LKML-Reference: <20100603213409.GA8307@redhat.com>
Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
parent 58cc1a9e
...@@ -10,7 +10,8 @@ ...@@ -10,7 +10,8 @@
#define TP_STORE_SIGINFO(__entry, info) \ #define TP_STORE_SIGINFO(__entry, info) \
do { \ do { \
if (info == SEND_SIG_NOINFO) { \ if (info == SEND_SIG_NOINFO || \
info == SEND_SIG_FORCED) { \
__entry->errno = 0; \ __entry->errno = 0; \
__entry->code = SI_USER; \ __entry->code = SI_USER; \
} else if (info == SEND_SIG_PRIV) { \ } else if (info == SEND_SIG_PRIV) { \
......
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