mirror of https://github.com/dynup/kpatch
Update fixup-section patches
These patches previously would try to dereference a userspace pointer directly which can cause issue on some systems. Since the aim of these patches is to check fixup section changes we can don't need to do any meaningful changes to the function, so change the patches to just add asm("nop") instead. Signed-off-by: Artem Savkov <asavkov@redhat.com>
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parent
bfe1c74d4f
commit
5dfe17cb02
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@ -1,12 +1,12 @@
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diff -Nupr src.orig/fs/readdir.c src/fs/readdir.c
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--- src.orig/fs/readdir.c 2017-09-22 15:27:21.658056010 -0400
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+++ src/fs/readdir.c 2017-09-22 15:27:26.378075555 -0400
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@@ -166,6 +166,8 @@ static int filldir(void * __buf, const c
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diff --git a/fs/readdir.c b/fs/readdir.c
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index febd02dfbe2d..064db7bd70d0 100644
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--- a/fs/readdir.c
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+++ b/fs/readdir.c
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@@ -176,6 +176,7 @@ static int filldir(void * __buf, const char * name, int namlen, loff_t offset,
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goto efault;
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}
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dirent = buf->current_dir;
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+ if (dirent->d_ino == 12345678)
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+ printk("kpatch-test: testing .fixup section changes\n");
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+ asm("nop");
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if (__put_user(d_ino, &dirent->d_ino))
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goto efault;
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if (__put_user(reclen, &dirent->d_reclen))
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@ -1,12 +1,12 @@
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diff -Nupr src.orig/fs/readdir.c src/fs/readdir.c
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--- src.orig/fs/readdir.c 2016-12-15 19:55:39.196000000 +0000
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+++ src/fs/readdir.c 2016-12-15 19:56:25.868000000 +0000
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@@ -173,6 +173,8 @@ static int filldir(struct dir_context *c
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diff --git a/fs/readdir.c b/fs/readdir.c
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index ced679179cac..7fb338324582 100644
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--- a/fs/readdir.c
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+++ b/fs/readdir.c
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@@ -173,6 +173,7 @@ static int filldir(struct dir_context *ctx, const char *name, int namlen,
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goto efault;
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}
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dirent = buf->current_dir;
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+ if (dirent->d_ino == 12345678)
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+ printk("kpatch-test: testing .fixup section changes\n");
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+ asm("nop");
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if (__put_user(d_ino, &dirent->d_ino))
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goto efault;
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if (__put_user(reclen, &dirent->d_reclen))
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