Hi all, After merging the vfs tree, today's linux-next build (x86 allmodconfig) failed like this: In file included from /tmp/next/build/include/rv/ltl_monitor.h:11, from /tmp/next/build/kernel/trace/rv/monitors/pagefault/pagefault.c:19: /tmp/next/build/include/rv/ltl_monitor.h: In function 'ltl_monitor_init': /tmp/next/build/include/rv/ltl_monitor.h:75:51: error: passing argument 1 of 'check_trace_callback_type_task_newtask' from incompatible pointer type [-Wincompatible-pointer-types] 75 | rv_attach_trace_probe(name, task_newtask, handle_task_newtask); | ^~~~~~~~~~~~~~~~~~~ | | | void (*)(void *, struct task_struct *, long unsigned int) /tmp/next/build/include/rv/instrumentation.h:18:48: note: in definition of macro 'rv_attach_trace_probe' 18 | check_trace_callback_type_##tp(rv_handler); \ | ^~~~~~~~~~ In file included from /tmp/next/build/kernel/trace/rv/monitors/pagefault/pagefault.c:9: /tmp/next/build/include/linux/tracepoint.h:260:49: note: expected 'void (*)(void *, struct task_struct *, u64)' {aka 'void (*)(void *, struct task_struct *, long long unsigned int)'} but argument is of type 'void (*)(void *, struct task_struct *, long unsigned int)' 260 | check_trace_callback_type_##name(void (*cb)(data_proto)) \ | ~~~~~~~^~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:270:9: note: in expansion of macro '__DECLARE_TRACE_COMMON' 270 | __DECLARE_TRACE_COMMON(name, PARAMS(proto), PARAMS(args), PARAMS(data_proto)) \ | ^~~~~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:481:9: note: in expansion of macro '__DECLARE_TRACE' 481 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ | ^~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:619:9: note: in expansion of macro 'DECLARE_TRACE_EVENT' 619 | DECLARE_TRACE_EVENT(name, PARAMS(proto), PARAMS(args)) | ^~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/trace/events/task.h:9:1: note: in expansion of macro 'TRACE_EVENT' 9 | TRACE_EVENT(task_newtask, | ^~~~~~~~~~~ In file included from /tmp/next/build/include/asm-generic/bug.h:7, from /tmp/next/build/arch/x86/include/asm/bug.h:103, from /tmp/next/build/arch/x86/include/asm/alternative.h:9, from /tmp/next/build/arch/x86/include/asm/barrier.h:5, from /tmp/next/build/include/asm-generic/bitops/generic-non-atomic.h:7, from /tmp/next/build/include/linux/bitops.h:28, from /tmp/next/build/include/linux/kernel.h:23, from /tmp/next/build/include/linux/interrupt.h:6, from /tmp/next/build/include/linux/trace_recursion.h:5, from /tmp/next/build/include/linux/ftrace.h:10, from /tmp/next/build/kernel/trace/rv/monitors/pagefault/pagefault.c:2: /tmp/next/build/include/rv/ltl_monitor.h:75:51: error: passing argument 1 of 'register_trace_task_newtask' from incompatible pointer type [-Wincompatible-pointer-types] 75 | rv_attach_trace_probe(name, task_newtask, handle_task_newtask); | ^~~~~~~~~~~~~~~~~~~ | | | void (*)(void *, struct task_struct *, long unsigned int) /tmp/next/build/include/linux/once_lite.h:28:41: note: in definition of macro 'DO_ONCE_LITE_IF' 28 | bool __ret_do_once = !!(condition); \ | ^~~~~~~~~ /tmp/next/build/include/rv/instrumentation.h:19:17: note: in expansion of macro 'WARN_ONCE' 19 | WARN_ONCE(register_trace_##tp(rv_handler, NULL), \ | ^~~~~~~~~ /tmp/next/build/include/rv/ltl_monitor.h:75:9: note: in expansion of macro 'rv_attach_trace_probe' 75 | rv_attach_trace_probe(name, task_newtask, handle_task_newtask); | ^~~~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:241:38: note: expected 'void (*)(void *, struct task_struct *, u64)' {aka 'void (*)(void *, struct task_struct *, long long unsigned int)'} but argument is of type 'void (*)(void *, struct task_struct *, long unsigned int)' 241 | register_trace_##name(void (*probe)(data_proto), void *data) \ | ~~~~~~~^~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:270:9: note: in expansion of macro '__DECLARE_TRACE_COMMON' 270 | __DECLARE_TRACE_COMMON(name, PARAMS(proto), PARAMS(args), PARAMS(data_proto)) \ | ^~~~~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:481:9: note: in expansion of macro '__DECLARE_TRACE' 481 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ | ^~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:619:9: note: in expansion of macro 'DECLARE_TRACE_EVENT' 619 | DECLARE_TRACE_EVENT(name, PARAMS(proto), PARAMS(args)) | ^~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/trace/events/task.h:9:1: note: in expansion of macro 'TRACE_EVENT' 9 | TRACE_EVENT(task_newtask, | ^~~~~~~~~~~ /tmp/next/build/include/rv/ltl_monitor.h: In function 'ltl_monitor_destroy': /tmp/next/build/include/rv/ltl_monitor.h:92:51: error: passing argument 1 of 'unregister_trace_task_newtask' from incompatible pointer type [-Wincompatible-pointer-types] 92 | rv_detach_trace_probe(name, task_newtask, handle_task_newtask); | ^~~~~~~~~~~~~~~~~~~ | | | void (*)(void *, struct task_struct *, long unsigned int) /tmp/next/build/include/rv/instrumentation.h:28:39: note: in definition of macro 'rv_detach_trace_probe' 28 | unregister_trace_##tp(rv_handler, NULL); \ | ^~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:254:40: note: expected 'void (*)(void *, struct task_struct *, u64)' {aka 'void (*)(void *, struct task_struct *, long long unsigned int)'} but argument is of type 'void (*)(void *, struct task_struct *, long unsigned int)' 254 | unregister_trace_##name(void (*probe)(data_proto), void *data) \ | ~~~~~~~^~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:270:9: note: in expansion of macro '__DECLARE_TRACE_COMMON' 270 | __DECLARE_TRACE_COMMON(name, PARAMS(proto), PARAMS(args), PARAMS(data_proto)) \ | ^~~~~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:481:9: note: in expansion of macro '__DECLARE_TRACE' 481 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ | ^~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:619:9: note: in expansion of macro 'DECLARE_TRACE_EVENT' 619 | DECLARE_TRACE_EVENT(name, PARAMS(proto), PARAMS(args)) | ^~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/trace/events/task.h:9:1: note: in expansion of macro 'TRACE_EVENT' 9 | TRACE_EVENT(task_newtask, | ^~~~~~~~~~~ make[6]: *** [/tmp/next/build/scripts/Makefile.build:287: kernel/trace/rv/monitors/pagefault/pagefault.o] Error 1 make[6]: *** Waiting for unfinished jobs.... In file included from /tmp/next/build/include/rv/ltl_monitor.h:11, from /tmp/next/build/kernel/trace/rv/monitors/sleep/sleep.c:23: /tmp/next/build/include/rv/ltl_monitor.h: In function 'ltl_monitor_init': /tmp/next/build/include/rv/ltl_monitor.h:75:51: error: passing argument 1 of 'check_trace_callback_type_task_newtask' from incompatible pointer type [-Wincompatible-pointer-types] 75 | rv_attach_trace_probe(name, task_newtask, handle_task_newtask); | ^~~~~~~~~~~~~~~~~~~ | | | void (*)(void *, struct task_struct *, long unsigned int) /tmp/next/build/include/rv/instrumentation.h:18:48: note: in definition of macro 'rv_attach_trace_probe' 18 | check_trace_callback_type_##tp(rv_handler); \ | ^~~~~~~~~~ In file included from /tmp/next/build/kernel/trace/rv/monitors/sleep/sleep.c:3: /tmp/next/build/include/linux/tracepoint.h:260:49: note: expected 'void (*)(void *, struct task_struct *, u64)' {aka 'void (*)(void *, struct task_struct *, long long unsigned int)'} but argument is of type 'void (*)(void *, struct task_struct *, long unsigned int)' 260 | check_trace_callback_type_##name(void (*cb)(data_proto)) \ | ~~~~~~~^~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:270:9: note: in expansion of macro '__DECLARE_TRACE_COMMON' 270 | __DECLARE_TRACE_COMMON(name, PARAMS(proto), PARAMS(args), PARAMS(data_proto)) \ | ^~~~~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:481:9: note: in expansion of macro '__DECLARE_TRACE' 481 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ | ^~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:619:9: note: in expansion of macro 'DECLARE_TRACE_EVENT' 619 | DECLARE_TRACE_EVENT(name, PARAMS(proto), PARAMS(args)) | ^~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/trace/events/task.h:9:1: note: in expansion of macro 'TRACE_EVENT' 9 | TRACE_EVENT(task_newtask, | ^~~~~~~~~~~ In file included from /tmp/next/build/include/asm-generic/bug.h:7, from /tmp/next/build/arch/x86/include/asm/bug.h:103, from /tmp/next/build/arch/x86/include/asm/alternative.h:9, from /tmp/next/build/arch/x86/include/asm/barrier.h:5, from /tmp/next/build/include/asm-generic/bitops/generic-non-atomic.h:7, from /tmp/next/build/include/linux/bitops.h:28, from /tmp/next/build/include/linux/kernel.h:23, from /tmp/next/build/include/linux/interrupt.h:6, from /tmp/next/build/include/linux/trace_recursion.h:5, from /tmp/next/build/include/linux/ftrace.h:10, from /tmp/next/build/kernel/trace/rv/monitors/sleep/sleep.c:2: /tmp/next/build/include/rv/ltl_monitor.h:75:51: error: passing argument 1 of 'register_trace_task_newtask' from incompatible pointer type [-Wincompatible-pointer-types] 75 | rv_attach_trace_probe(name, task_newtask, handle_task_newtask); | ^~~~~~~~~~~~~~~~~~~ | | | void (*)(void *, struct task_struct *, long unsigned int) /tmp/next/build/include/linux/once_lite.h:28:41: note: in definition of macro 'DO_ONCE_LITE_IF' 28 | bool __ret_do_once = !!(condition); \ | ^~~~~~~~~ /tmp/next/build/include/rv/instrumentation.h:19:17: note: in expansion of macro 'WARN_ONCE' 19 | WARN_ONCE(register_trace_##tp(rv_handler, NULL), \ | ^~~~~~~~~ /tmp/next/build/include/rv/ltl_monitor.h:75:9: note: in expansion of macro 'rv_attach_trace_probe' 75 | rv_attach_trace_probe(name, task_newtask, handle_task_newtask); | ^~~~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:241:38: note: expected 'void (*)(void *, struct task_struct *, u64)' {aka 'void (*)(void *, struct task_struct *, long long unsigned int)'} but argument is of type 'void (*)(void *, struct task_struct *, long unsigned int)' 241 | register_trace_##name(void (*probe)(data_proto), void *data) \ | ~~~~~~~^~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:270:9: note: in expansion of macro '__DECLARE_TRACE_COMMON' 270 | __DECLARE_TRACE_COMMON(name, PARAMS(proto), PARAMS(args), PARAMS(data_proto)) \ | ^~~~~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:481:9: note: in expansion of macro '__DECLARE_TRACE' 481 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ | ^~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:619:9: note: in expansion of macro 'DECLARE_TRACE_EVENT' 619 | DECLARE_TRACE_EVENT(name, PARAMS(proto), PARAMS(args)) | ^~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/trace/events/task.h:9:1: note: in expansion of macro 'TRACE_EVENT' 9 | TRACE_EVENT(task_newtask, | ^~~~~~~~~~~ /tmp/next/build/include/rv/ltl_monitor.h: In function 'ltl_monitor_destroy': /tmp/next/build/include/rv/ltl_monitor.h:92:51: error: passing argument 1 of 'unregister_trace_task_newtask' from incompatible pointer type [-Wincompatible-pointer-types] 92 | rv_detach_trace_probe(name, task_newtask, handle_task_newtask); | ^~~~~~~~~~~~~~~~~~~ | | | void (*)(void *, struct task_struct *, long unsigned int) /tmp/next/build/include/rv/instrumentation.h:28:39: note: in definition of macro 'rv_detach_trace_probe' 28 | unregister_trace_##tp(rv_handler, NULL); \ | ^~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:254:40: note: expected 'void (*)(void *, struct task_struct *, u64)' {aka 'void (*)(void *, struct task_struct *, long long unsigned int)'} but argument is of type 'void (*)(void *, struct task_struct *, long unsigned int)' 254 | unregister_trace_##name(void (*probe)(data_proto), void *data) \ | ~~~~~~~^~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:270:9: note: in expansion of macro '__DECLARE_TRACE_COMMON' 270 | __DECLARE_TRACE_COMMON(name, PARAMS(proto), PARAMS(args), PARAMS(data_proto)) \ | ^~~~~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:481:9: note: in expansion of macro '__DECLARE_TRACE' 481 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ | ^~~~~~~~~~~~~~~ /tmp/next/build/include/linux/tracepoint.h:619:9: note: in expansion of macro 'DECLARE_TRACE_EVENT' 619 | DECLARE_TRACE_EVENT(name, PARAMS(proto), PARAMS(args)) | ^~~~~~~~~~~~~~~~~~~ /tmp/next/build/include/trace/events/task.h:9:1: note: in expansion of macro 'TRACE_EVENT' 9 | TRACE_EVENT(task_newtask, | ^~~~~~~~~~~ make[6]: *** [/tmp/next/build/scripts/Makefile.build:287: kernel/trace/rv/monitors/sleep/sleep.o] Error 1 make[5]: *** [/tmp/next/build/scripts/Makefile.build:556: kernel/trace/rv] Error 2 make[5]: *** Waiting for unfinished jobs.... make[4]: *** [/tmp/next/build/scripts/Makefile.build:556: kernel/trace] Error 2 make[4]: *** Waiting for unfinished jobs.... make[3]: *** [/tmp/next/build/scripts/Makefile.build:556: kernel] Error 2 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [/tmp/next/build/Makefile:2011: .] Error 2 make[1]: *** [/tmp/next/build/Makefile:248: __sub-make] Error 2 make: *** [Makefile:248: __sub-make] Error 2 Command exited with non-zero status 2 17036.15user 1313.54system 1:54.95elapsed 15962%CPU (0avgtext+0avgdata 1394068maxresident)k 0inputs+0outputs (5021major+224011004minor)pagefaults 0swaps I couldn't figure out exactly which commit was causing this in a timely fashion (and suspect it may be an interaction with another tree), I've used the VFS tree from 20250926 instead.