mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
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19 lines
534 B
Diff
19 lines
534 B
Diff
diff --git a/fs/sdcardfs/main.c b/fs/sdcardfs/main.c
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index a652228..8b51a12 100755
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--- a/fs/sdcardfs/main.c
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+++ b/fs/sdcardfs/main.c
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@@ -223,6 +223,13 @@
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atomic_inc(&lower_sb->s_active);
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sdcardfs_set_lower_super(sb, lower_sb);
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+ sb->s_stack_depth = lower_sb->s_stack_depth + 1;
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+ if (sb->s_stack_depth > FILESYSTEM_MAX_STACK_DEPTH) {
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+ pr_err("sdcardfs: maximum fs stacking depth exceeded\n");
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+ err = -EINVAL;
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+ goto out_sput;
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+ }
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+
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/* inherit maxbytes from lower file system */
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sb->s_maxbytes = lower_sb->s_maxbytes;
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