On Thu, Oct 12, 2023 at 08:38:14AM +0800, Herbert Xu wrote: > > > Narrowing down further didn't work due to: > > /usr/bin/ld: crypto/asymmetric_keys/x509_public_key.o: in function > > `x509_get_sig_params': > > x509_public_key.c:(.text+0x363): undefined reference to `sm2_compute_z_digest' > > collect2: error: ld returned 1 exit status I wonder if this is a bug in the bisection process. The reference to sm2_compute_z_digest is protected by an IS_REACHABLE test on SM2 which is presumably disabled in your configuration. Can you please do a clean rebuild from the first buggy commit with the same config file and see if it still triggers the build failure? Cheers, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt