On 2023/9/13 07:02, Sanan Hasanov wrote:
Good day, dear maintainers, We found a bug using a modified kernel configuration file used by syzbot. We enhanced the coverage of the configuration file using our tool, klocalizer.
1) Please don't enable CONFIG_EROFS_FS_DEBUG=y when fuzzing. This configuration is just for developper debugging, not for daily use or fuzzing. 2) Please don't use random -next version, I don't even find this version in https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/refs/tags now. Although it seems 198 bogusimode: 199 erofs_err(inode->i_sb, "bogus i_mode (%o) @ nid %llu", 200 inode->i_mode, vi->nid); 201 err = -EFSCORRUPTED; 202 err_out: 203> DBG_BUGON(1); 204 kfree(copied); 205 erofs_put_metabuf(buf); 206 return ERR_PTR(err); when I check Linux v6.3 source code. Please use upstream or latest tree for fuzzing, thanks! Thanks, Gao Xiang
Kernel Branch: 6.3.0-next-20230426 Kernel Config: https://drive.google.com/file/d/1rGIKWTEfoMed0JL5jWFws4GJ0VNSVgw8/view?usp=sharing Reproducer: https://drive.google.com/file/d/1ceAFcx9hhevq_ivDNPkXmEGYsr26yB4N/view?usp=sharing Thank you! Best regards, Sanan Hasanov
