Hi all, After merging the userns tree, today's linux-next build (x86_64 allmodconfig) failed like this: In file included from arch/x86/include/asm/bug.h:84, from include/linux/bug.h:5, from arch/x86/include/asm/paravirt.h:15, from arch/x86/include/asm/irqflags.h:63, from include/linux/irqflags.h:16, from include/linux/rcupdate.h:26, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from security/keys/process_keys.c:9: security/keys/process_keys.c: In function 'key_change_session_keyring': security/keys/process_keys.c:923:16: error: format '%s' expects a matching 'char *' argument [-Werror=format=] 923 | WARN_ONCE(1, "In %s get_ucounts failed\n"); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:99:17: note: in definition of macro '__WARN_printf' 99 | __warn_printk(arg); \ | ^~~ include/linux/once_lite.h:19:4: note: in expansion of macro 'WARN' 19 | func(__VA_ARGS__); \ | ^~~~ include/asm-generic/bug.h:150:2: note: in expansion of macro 'DO_ONCE_LITE_IF' 150 | DO_ONCE_LITE_IF(condition, WARN, 1, format) | ^~~~~~~~~~~~~~~ security/keys/process_keys.c:923:3: note: in expansion of macro 'WARN_ONCE' 923 | WARN_ONCE(1, "In %s get_ucounts failed\n"); | ^~~~~~~~~ security/keys/process_keys.c:923:21: note: format string is defined here 923 | WARN_ONCE(1, "In %s get_ucounts failed\n"); | ~^ | | | char * cc1: all warnings being treated as errors Caused by commit 346b5b4aa656 ("ucounts: Move get_ucounts from cred_alloc_blank to key_change_session_keyring") I have used the userns tree from next-20211019 for today. -- Cheers, Stephen Rothwell
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