Increasing to 2048 did allow kernels to compile with KASAN
enabled. I am curious why e-mail only? It would seem bugzilla, a
public forum would make this fix available to others who may be
experiencing the same or related problems. Interestingly, I could not
locate the symbol with xconfig, had to hand edit the .config file in
deference to the fact that it tells you not to.
On 1/9/23 16:09, Andrew Morton wrote:
(switched to email. Please respond via emailed reply-to-all, not via the
bugzilla web interface).
On Mon, 09 Jan 2023 23:42:40 +0000 bugzilla-daemon@xxxxxxxxxx wrote:
https://bugzilla.kernel.org/show_bug.cgi?id=216905
Bug ID: 216905
Summary: Kernel won't compile with KASAN
Product: Memory Management
Version: 2.5
Kernel Version: 6.1.4
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
Assignee: akpm@xxxxxxxxxxxxxxxxxxxx
Reporter: nanook@xxxxxxxxxx
Regression: No
Created attachment 303563
--> https://bugzilla.kernel.org/attachment.cgi?id=303563&action=edit
These are errors when trying to compile KASAN inline
Using GCC 12.2, can not compile a kernel with KASAN enabled, either inline or
outline.
The hardware is an i7-6700k based home brew machine, Asus motherboard.
running Ubuntu 22.10 32GB of RAM but using gcc 12.2 rather than the Ubuntu
compiler.
crypto/ecc.c: In function ‘ecc_point_mult_shamir’:
crypto/ecc.c:1414:1: warning: the frame size of 1168 bytes is larger than 1024 bytes [-Wframe-larger-than=]
1414 | }
| ^
lib/crypto/curve25519-hacl64.c: In function ‘ladder_cmult.constprop’:
lib/crypto/curve25519-hacl64.c:601:1: warning: the frame size of 1376 bytes is larger than 1024 bytes [-Wframe-larger-than=]
601 | }
| ^
lib/zstd/common/entropy_common.c: In function ‘HUF_readStats’:
lib/zstd/common/entropy_common.c:258:1: warning: the frame size of 1088 bytes is larger than 1024 bytes [-Wframe-larger-than=]
258 | }
| ^
(etcetera)
Increasing CONFIG_FRAME_WARN should fix this. Try 2048.
Perhaps KASAN could increase it somehow to prevent others from tripping
over this.
