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Date: Thu, 11 Aug 2022 08:36:24 +0100 From: "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@...il.com> To: Masahiro Yamada <masahiroy@...nel.org>, Michal Marek <michal.lkml@...kovi.net>, Nick Desaulniers <ndesaulniers@...gle.com> Cc: linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org, Nathan Chancellor <nathan@...nel.org>, clang-built-linux <llvm@...ts.linux.dev> Subject: mainline build failure for arm64 allmodconfig with clang Hi All, The latest mainline kernel branch fails to build for arm64 allmodconfig with clang. The errors are: sound/soc/sof/ipc3-topology.c:2343:4: error: format specifies type 'unsigned char' but the argument has type 'int' [-Werror,-Wformat] SOF_ABI_MAJOR, SOF_ABI_MINOR, SOF_ABI_PATCH); ^~~~~~~~~~~~~ ./include/linux/dev_printk.h:150:67: note: expanded from macro 'dev_info' dev_printk_index_wrap(_dev_info, KERN_INFO, dev, dev_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ ./include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap' _p_func(dev, fmt, ##__VA_ARGS__); \ ~~~ ^~~~~~~~~~~ ./include/uapi/sound/sof/abi.h:30:23: note: expanded from macro 'SOF_ABI_MAJOR' #define SOF_ABI_MAJOR 3 ^ sound/soc/sof/ipc3-topology.c:2343:19: error: format specifies type 'unsigned char' but the argument has type 'int' [-Werror,-Wformat] SOF_ABI_MAJOR, SOF_ABI_MINOR, SOF_ABI_PATCH); ^~~~~~~~~~~~~ ./include/linux/dev_printk.h:150:67: note: expanded from macro 'dev_info' dev_printk_index_wrap(_dev_info, KERN_INFO, dev, dev_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ ./include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap' _p_func(dev, fmt, ##__VA_ARGS__); \ ~~~ ^~~~~~~~~~~ ./include/uapi/sound/sof/abi.h:31:23: note: expanded from macro 'SOF_ABI_MINOR' #define SOF_ABI_MINOR 23 ^~ sound/soc/sof/ipc3-topology.c:2343:34: error: format specifies type 'unsigned char' but the argument has type 'int' [-Werror,-Wformat] SOF_ABI_MAJOR, SOF_ABI_MINOR, SOF_ABI_PATCH); ^~~~~~~~~~~~~ ./include/linux/dev_printk.h:150:67: note: expanded from macro 'dev_info' dev_printk_index_wrap(_dev_info, KERN_INFO, dev, dev_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ ./include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap' _p_func(dev, fmt, ##__VA_ARGS__); \ ~~~ ^~~~~~~~~~~ ./include/uapi/sound/sof/abi.h:32:23: note: expanded from macro 'SOF_ABI_PATCH' #define SOF_ABI_PATCH 0 ^ 3 errors generated. drivers/ntb/hw/idt/ntb_hw_idt.c:2409:28: error: format specifies type 'unsigned char' but the argument has type 'int' [-Werror,-Wformat] "\t%hhu-%hhu.\t", idx, idx + cnt - 1); ~~~~ ^~~~~~~~~~~~~ %d drivers/ntb/hw/idt/ntb_hw_idt.c:2438:29: error: format specifies type 'unsigned char' but the argument has type 'int' [-Werror,-Wformat] "\t%hhu-%hhu.\t", idx, idx + cnt - 1); ~~~~ ^~~~~~~~~~~~~ %d drivers/ntb/hw/idt/ntb_hw_idt.c:2484:15: error: format specifies type 'unsigned char' but the argument has type 'int' [-Werror,-Wformat] idx, data, src, ndev->peers[src].port); ^~~ 3 errors generated. For both, git bisect points to 0af5cb349a2c ("Merge tag 'kbuild-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild") The last good build for arm64 clang was with e394ff83bbca ("Merge tag 'nfsd-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux") I will be happy to test any patch or provide any extra log if needed. -- Regards Sudip
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