* objtool: Exclude __tracepoints data from ENDBR checks
@ 2024-11-08 18:46 Peter Zijlstra
2024-11-11 10:59 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
0 siblings, 1 reply; 3+ messages in thread
From: Peter Zijlstra @ 2024-11-08 18:46 UTC (permalink / raw)
To: Josh Poimboeuf, x86, linux-kernel; +Cc: nathan
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;
^ permalink raw reply [flat|nested] 3+ messages in thread
* [tip: objtool/core] objtool: Exclude __tracepoints data from ENDBR checks
2024-11-08 18:46 objtool: Exclude __tracepoints data from ENDBR checks Peter Zijlstra
@ 2024-11-11 10:59 ` tip-bot2 for Peter Zijlstra
2024-11-11 19:34 ` Huang, Kai
0 siblings, 1 reply; 3+ messages in thread
From: tip-bot2 for Peter Zijlstra @ 2024-11-11 10:59 UTC (permalink / raw)
To: linux-tip-commits; +Cc: Peter Zijlstra (Intel), x86, linux-kernel
The following commit has been merged into the objtool/core branch of tip:
Commit-ID: d5173f7537505315557d8580e3a648f07f17deda
Gitweb: https://git.kernel.org/tip/d5173f7537505315557d8580e3a648f07f17deda
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Fri, 08 Nov 2024 10:32:02 +01:00
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Mon, 11 Nov 2024 11:49:42 +01:00
objtool: Exclude __tracepoints data from ENDBR checks
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>
Link: https://lkml.kernel.org/r/20241108184618.GG38786@noisy.programming.kicks-ass.net
---
tools/objtool/check.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 7fc96c3..f7586f8 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -4573,6 +4573,7 @@ static int validate_ibt(struct objtool_file *file)
!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;
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [tip: objtool/core] objtool: Exclude __tracepoints data from ENDBR checks
2024-11-11 10:59 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
@ 2024-11-11 19:34 ` Huang, Kai
0 siblings, 0 replies; 3+ messages in thread
From: Huang, Kai @ 2024-11-11 19:34 UTC (permalink / raw)
To: linux-kernel, linux-tip-commits; +Cc: peterz, x86
On Mon, 2024-11-11 at 10:59 +0000, tip-bot2 for Peter Zijlstra wrote:
> The following commit has been merged into the objtool/core branch of tip:
>
> Commit-ID: d5173f7537505315557d8580e3a648f07f17deda
> Gitweb: https://git.kernel.org/tip/d5173f7537505315557d8580e3a648f07f17deda
> Author: Peter Zijlstra <peterz@infradead.org>
> AuthorDate: Fri, 08 Nov 2024 10:32:02 +01:00
> Committer: Peter Zijlstra <peterz@infradead.org>
> CommitterDate: Mon, 11 Nov 2024 11:49:42 +01:00
>
> objtool: Exclude __tracepoints data from ENDBR checks
>
> For some, as of yet unexplained reason, Clang-19, but not GCC,
> generates and endless stream of:
^
Nit: this looks like a grammar mistake?
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2024-11-11 19:34 UTC | newest]
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2024-11-08 18:46 objtool: Exclude __tracepoints data from ENDBR checks Peter Zijlstra
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2024-11-11 19:34 ` Huang, Kai
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