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From: Peter Zijlstra <peterz@infradead.org>
To: Josh Poimboeuf <jpoimboe@redhat.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org
Cc: nathan@kernel.org
Subject: objtool: Exclude __tracepoints data from ENDBR checks
Date: Fri, 8 Nov 2024 19:46:18 +0100	[thread overview]
Message-ID: <20241108184618.GG38786@noisy.programming.kicks-ass.net> (raw)


For some, as of yet unexplained reason, Clang-19, but not GCC,
generates and endless stream of:

drivers/iio/imu/bno055/bno055_ser.o: warning: objtool: __tracepoint_send_chunk+0x20: data relocation to !ENDBR: __SCT__tp_func_send_chunk+0x0
drivers/iio/imu/bno055/bno055_ser.o: warning: objtool: __tracepoint_cmd_retry+0x20: data relocation to !ENDBR: __SCT__tp_func_cmd_retry+0x0
drivers/iio/imu/bno055/bno055_ser.o: warning: objtool: __tracepoint_write_reg+0x20: data relocation to !ENDBR: __SCT__tp_func_write_reg+0x0
drivers/iio/imu/bno055/bno055_ser.o: warning: objtool: __tracepoint_read_reg+0x20: data relocation to !ENDBR: __SCT__tp_func_read_reg+0x0
drivers/iio/imu/bno055/bno055_ser.o: warning: objtool: __tracepoint_recv+0x20: data relocation to !ENDBR: __SCT__tp_func_recv+0x0

Which is entirely correct, but harmless. Add the __tracepoints section
to the exclusion list.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 tools/objtool/check.c |    1 +
 1 file changed, 1 insertion(+)

--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -4573,6 +4573,7 @@ static int validate_ibt(struct objtool_f
 		    !strcmp(sec->name, "__jump_table")			||
 		    !strcmp(sec->name, "__mcount_loc")			||
 		    !strcmp(sec->name, ".kcfi_traps")			||
+		    !strcmp(sec->name, "__tracepoints")			||
 		    strstr(sec->name, "__patchable_function_entries"))
 			continue;
 

             reply	other threads:[~2024-11-08 18:46 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-11-08 18:46 Peter Zijlstra [this message]
2024-11-11 10:59 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2024-11-11 19:34   ` Huang, Kai

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