kpatch_create_dynamic_rela_sections: 2090: lookup_local_symbol .LC1 (aio.c) needed for __bug_table

[jpoimboe]

This patch probably won't work anyway because it patches a system call function, which is a known limitation of kpatch. But it gave me an unexpected error:

Index: src/fs/aio.c
===================================================================
--- src.orig/fs/aio.c
+++ src/fs/aio.c
@@ -1561,6 +1561,8 @@ static struct kiocb *lookup_kiocb(struct
        if (kiocb->ki_obj.user == iocb)
            return kiocb;
    }
+   if (!jiffies)
+       printk("lookup_kiocb\n");
    return NULL;
 }

@@ -1642,3 +1644,15 @@ SYSCALL_DEFINE5(io_getevents, aio_contex
    }
    return ret;
 }
+
+void kpatch_load_aio_max_nr(void)
+{
+   aio_max_nr = 0x40000;
+}
+void kpatch_unload_aio_max_nr(void)
+{
+   aio_max_nr = 0x10000;
+}
+#include "kpatch-macros.h"
+KPATCH_LOAD_HOOK(kpatch_load_aio_max_nr);
+KPATCH_UNLOAD_HOOK(kpatch_unload_aio_max_nr);

[master] ~/git/kpatch $ kpatch-build/kpatch-build -t vmlinux ~/aio.patch 
Using cache at /home/jpoimboe/.kpatch/src
Testing patch file
checking file fs/aio.c
Building original kernel
Building patched kernel
Extracting new and modified ELF sections
aio.o: changed function: SyS_io_cancel
aio.o: found hook: kpatch_unload_aio_max_nr
aio.o: found hook: kpatch_load_aio_max_nr
/home/jpoimboe/git/kpatch/kpatch-build/create-diff-object: kpatch_create_dynamic_rela_sections: 2090: lookup_local_symbol .LC1 (aio.c) needed for __bug_table
ERROR: kpatch build failed. Check /tmp/kpatch-build-1407945223.log for more details.