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authorLinus Torvalds <torvalds@linux-foundation.org>2023-12-22 07:50:34 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2023-12-22 07:50:34 -0800
commit93a165cb9a4c7bf517db07abdfafde742c7dc234 (patch)
treeaae81f00aa28b9b2d552a608036567d34eabf943 /include
parent24e0d2e527a39f64caeb2e6be39ad5396fb2da5e (diff)
parentff49bf1867578f23a5ffdd38f927f6e1e16796c4 (diff)
Merge tag '9p-for-6.7-rc7' of https://github.com/martinetd/linux
Pull 9p fixes from Dominique Martinet: "Two small fixes scheduled for stable trees: A tracepoint fix that's been reading past the end of messages forever, but semi-recently also went over the end of the buffer. And a potential incorrectly freeing garbage in pdu parsing error path" * tag '9p-for-6.7-rc7' of https://github.com/martinetd/linux: net: 9p: avoid freeing uninit memory in p9pdu_vreadf 9p: prevent read overrun in protocol dump tracepoint
Diffstat (limited to 'include')
-rw-r--r--include/trace/events/9p.h11
1 files changed, 7 insertions, 4 deletions
diff --git a/include/trace/events/9p.h b/include/trace/events/9p.h
index 4dfa6d7f83ba..cd104a1343e2 100644
--- a/include/trace/events/9p.h
+++ b/include/trace/events/9p.h
@@ -178,18 +178,21 @@ TRACE_EVENT(9p_protocol_dump,
__field( void *, clnt )
__field( __u8, type )
__field( __u16, tag )
- __array( unsigned char, line, P9_PROTO_DUMP_SZ )
+ __dynamic_array(unsigned char, line,
+ min_t(size_t, pdu->capacity, P9_PROTO_DUMP_SZ))
),
TP_fast_assign(
__entry->clnt = clnt;
__entry->type = pdu->id;
__entry->tag = pdu->tag;
- memcpy(__entry->line, pdu->sdata, P9_PROTO_DUMP_SZ);
+ memcpy(__get_dynamic_array(line), pdu->sdata,
+ __get_dynamic_array_len(line));
),
- TP_printk("clnt %lu %s(tag = %d)\n%.3x: %16ph\n%.3x: %16ph\n",
+ TP_printk("clnt %lu %s(tag = %d)\n%*ph\n",
(unsigned long)__entry->clnt, show_9p_op(__entry->type),
- __entry->tag, 0, __entry->line, 16, __entry->line + 16)
+ __entry->tag, __get_dynamic_array_len(line),
+ __get_dynamic_array(line))
);