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Tue, 25 Feb 2025 03:46:12 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kbuild@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Tue, 25 Feb 2025 09:45:52 +0100 From: "Arnd Bergmann" To: "Steven Rostedt" Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, bpf , linux-arm-kernel@lists.infradead.org, linux-s390@vger.kernel.org, "Masami Hiramatsu" , "Mark Rutland" , "Mathieu Desnoyers" , "Andrew Morton" , "Peter Zijlstra" , "Linus Torvalds" , "Masahiro Yamada" , "Nathan Chancellor" , "Nicolas Schier" , "Zheng Yejian" , "Martin Kelly" , "Christophe Leroy" , "Josh Poimboeuf" , "Heiko Carstens" , "Catalin Marinas" , "Will Deacon" , "Vasily Gorbik" , "Alexander Gordeev" Message-Id: <91523154-072b-437b-bbdc-0b70e9783fd0@app.fastmail.com> In-Reply-To: <20250224211102.33e264fc@gandalf.local.home> References: <20250218195918.255228630@goodmis.org> <20250218200022.538888594@goodmis.org> <893cd8f1-8585-4d25-bf0f-4197bf872465@app.fastmail.com> <20250224172147.1de3fda5@gandalf.local.home> <20250224211102.33e264fc@gandalf.local.home> Subject: Re: [PATCH v5 2/6] scripts/sorttable: Have mcount rela sort use direct values Content-Type: text/plain Content-Transfer-Encoding: 7bit On Tue, Feb 25, 2025, at 03:11, Steven Rostedt wrote: > On Mon, 24 Feb 2025 17:21:47 -0500 >> > > Nevermind, Masami told me all I need to do is add LLVM=1 and clang can > handle the cross compiling. > > I looked, and sure enough clang on arm64 does it the same way x86 does. So > using the rela items to sort is a gcc thing :-p > > Can you try this patch? It fixes the build issue for me. I tried booting as well, but ran into a BUG() when I enable ftrace. I assume this is an unrelated issue, but you can find the output for reference in case this is relevant. Arnd ---- [ 0.000000] ftrace section at ffffc44698ef67c8 sorted properly [ 0.000000] Unable to handle kernel paging request at virtual address 0000444617800008 [ 0.000000] Mem abort info: [ 0.000000] ESR = 0x0000000096000004 [ 0.000000] EC = 0x25: DABT (current EL), IL = 32 bits [ 0.000000] SET = 0, FnV = 0 [ 0.000000] EA = 0, S1PTW = 0 [ 0.000000] FSC = 0x04: level 0 translation fault [ 0.000000] Data abort info: [ 0.000000] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 [ 0.000000] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 0.000000] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 0.000000] [0000444617800008] user address but active_mm is swapper [ 0.000000] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.14.0-rc4-next-20250225-00565-g6c6895f38d76 #15305 [ 0.000000] Hardware name: linux,dummy-virt (DT) [ 0.000000] pstate: 400000c5 (nZcv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 0.000000] pc : ftrace_call_adjust+0x44/0xd0 [ 0.000000] lr : ftrace_process_locs+0x220/0x5e0 [ 0.000000] sp : ffffc44698fb3da0 [ 0.000000] x29: ffffc44698fb3da0 x28: ffffc4469929f000 x27: ffffc4469929f000 [ 0.000000] x26: 0000444617800000 x25: ffffc44698ef67d0 x24: ffff57b2c2008000 [ 0.000000] x23: ffffc44698f59de0 x22: ffff57b2c2008000 x21: 0000000000000000 [ 0.000000] x20: 0000000000001000 x19: 0000444617800000 x18: 0000000000000068 [ 0.000000] x17: 0000000000000001 x16: 00000000ffffffff x15: ffffc44698fc5f80 [ 0.000000] x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000 [ 0.000000] x11: 0000000000000000 x10: 0000000000000000 x9 : 00007fff80000000 [ 0.000000] x8 : 000000000000201f x7 : 0000000000000000 x6 : 302e30202020205b [ 0.000000] x5 : 0000000000000001 x4 : 0000000000000000 x3 : 0000000000000001 [ 0.000000] x2 : 0000000000000004 x1 : 0000000000000040 x0 : 0000444617800000 [ 0.000000] Call trace: [ 0.000000] ftrace_call_adjust+0x44/0xd0 (P) [ 0.000000] ftrace_process_locs+0x220/0x5e0 [ 0.000000] ftrace_init+0x98/0xe8 [ 0.000000] start_kernel+0x16c/0x3d0 [ 0.000000] __primary_switched+0x88/0x98 [ 0.000000] Code: aa1f03e0 14000014 aa0003f3 528403e8 (b8408e74) [ 0.000000] ---[ end trace 0000000000000000 ]--- [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task! [ 0.000000] ---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]---