| Summary: | [12 Regression] Many new fortify-string.h:187:25: error: call to '__read_overflow2' kernel build errors since: r12-2591-g2e96b5f14e402569 | ||
|---|---|---|---|
| Product: | gcc | Reporter: | Martin Liška <marxin> |
| Component: | tree-optimization | Assignee: | Not yet assigned to anyone <unassigned> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | aldyh, amacleod |
| Priority: | P3 | ||
| Version: | 12.0 | ||
| Target Milestone: | 12.0 | ||
| See Also: | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101941 | ||
| Host: | Target: | ||
| Build: | Known to work: | 11.2.0 | |
| Known to fail: | 12.0 | Last reconfirmed: | 2021-11-15 00:00:00 |
| Attachments: | Original unreduced test-case | ||
I think this is basically a dup of bug 101941. Yes this is the same issue as PR 101941. *** This bug has been marked as a duplicate of bug 101941 *** |
Created attachment 51793 [details] Original unreduced test-case One can see it during kernel build. I tried isolating one test-case: $ cat aesni-intel_glue.i struct crypto_aes_ctx { int key_dec[16]; }; int rfc4106_set_hash_subkey_hash_subkey; void __write_overflow(); void aes_encrypt(); void fortify_panic() __attribute__((__noreturn__)) __attribute__((__error__(""))); char *rfc4106_set_hash_subkey() { struct crypto_aes_ctx ctx; unsigned p_size = __builtin_object_size(rfc4106_set_hash_subkey_hash_subkey, 0); if (p_size < 16) __write_overflow(); if (p_size < 16) fortify_panic(__func__); aes_encrypt(ctx); return (char *)rfc4106_set_hash_subkey; } $ gcc aesni-intel_glue.i -O2 -c -fconserve-stack -w aesni-intel_glue.i: In function ‘rfc4106_set_hash_subkey.part.0’: aesni-intel_glue.i:19:5: error: call to ‘fortify_panic’ declared with attribute error: 19 | fortify_panic(__func__); | ^~~~~~~~~~~~~~~~~~~~~~~ I'm also attaching the original unreduced test-case.