* [PATCH] trace-cmd: Make sure 32 bit works on 64 bit file systems
@ 2022-12-21 18:51 Steven Rostedt
2022-12-22 17:36 ` Ross Zwisler
0 siblings, 1 reply; 2+ messages in thread
From: Steven Rostedt @ 2022-12-21 18:51 UTC (permalink / raw)
To: Linux Trace Devel; +Cc: Mike Frysinger, Ross Zwisler
From: "Steven Rostedt (Google)" <rostedt@goodmis.org>
As stat() can overflow if a 32 bit user space reads a file on a file
system that has inodes greater than MAX_INT. Compile with
_FILE_OFFSET_BITS=64 that mitigates this problem on 32 bit user space.
Reported-by: Mike Frysinger <vapier@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
Makefile | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Makefile b/Makefile
index bda49dd9b3d8..1f2797604392 100644
--- a/Makefile
+++ b/Makefile
@@ -350,6 +350,9 @@ export INCLUDES
# Required CFLAGS
override CFLAGS += -D_GNU_SOURCE
+# Make sure 32 bit stat() works on large file systems
+override CFLAGS += -D_FILE_OFFSET_BITS=64
+
ifndef NO_PTRACE
ifneq ($(call try-cc,$(SOURCE_PTRACE),),y)
NO_PTRACE = 1
--
2.35.1
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2022-12-21 18:51 [PATCH] trace-cmd: Make sure 32 bit works on 64 bit file systems Steven Rostedt
2022-12-22 17:36 ` Ross Zwisler
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