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charset="UTF-8" Hello, syzbot tried to test the proposed patch but the build/boot failed: net/netfilter/ipset/ip_set_core.c:60:4: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Werror,-Wimplicit-int] net/netfilter/ipset/ip_set_core.c:60:9: error: expected ';' after top level declarator net/netfilter/ipset/ip_set_core.c:235:2: error: call to undeclared function 'ip_set_type_lock'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] net/netfilter/ipset/ip_set_core.c:236:7: error: call to undeclared function 'find_set_type'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] net/netfilter/ipset/ip_set_core.c:240:3: error: call to undeclared function 'ip_set_type_unlock'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] net/netfilter/ipset/ip_set_core.c:246:2: error: call to undeclared function 'ip_set_type_unlock'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] net/netfilter/ipset/ip_set_core.c:905:8: error: unterminated function-like macro invocation net/netfilter/ipset/ip_set_core.c:2453:69: error: expected expression net/netfilter/ipset/ip_set_core.c:2453:69: error: expected '}' Tested on: commit: 0e728dae netfilter: ipset: Fix suspicious rcu_derefere.. git tree: git://blackhole.szhk.kfki.hu/nf main kernel config: https://syzkaller.appspot.com/x/.config?x=7266aeba025a54a4 dashboard link: https://syzkaller.appspot.com/bug?extid=cfbe1da5fdfc39efc293 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.