Hi MTD Experts, I am hitting the below problem : UBI assert failed in ubi_wl_init at line 1632 -> ubi_assert(ubi->good_peb_count == found_pebs); The issue is because, in the scan_peb( ) , a specific PEB is found to be corrupted in the volume header CRC calculation which is a UBI_IO_BAD_HDR error. Later in scan_peb ( ), my target hits the else part saying its an unexpected corruption. [attach.c] else if (!err) /* This corruption is caused by a power cut */ err = add_to_list(ai, pnum, UBI_UNKNOWN, UBI_UNKNOWN, ec, 1, &ai->erase); else { /* This is an unexpected corruption */ err = add_corrupted(ai, pnum, ec); } The count of good peb is done as below : /* code snippet in attach.c */ ubi->bad_peb_count = ai->bad_peb_count; (this is 0 in my case) ubi->good_peb_count = ubi->peb_count - ubi->bad_peb_count; (total_peb_count(3464) - 0 = 3464) but what about the corrupted one? ubi->corr_peb_count = ai->corr_peb_count; (this is 1) Why is good_peb_count = peb_count - bad_peb_count ? (why not minus corrupt_peb_count or add it to erase list?) in the ubi_wl_init ( ) , the found_pebs is calculated from erase list and free list and we skip the corrupted peb list. But the good_count cotains the corrupted count as well. So , i hit this problem -> ubi_assert(ubi->good_peb_count == found_pebs); What is the logic behind this good_peb_count? Thanks bala -- *This e-mail message is intended for the internal use of the intended recipient(s) only. The information contained herein is confidential/privileged. Its disclosure or reproduction is strictly prohibited. If you are not the intended recipient, please inform the sender immediately, do not disclose it internally or to third parties and destroy it. In the course of our business relationship and for business purposes only, Valeo may need to process some of your personal data. For more information, please refer to the Valeo Data Protection Statement and Privacy notice available on Valeo.com <https://www.valeo.com/en/ethics-and-compliance/#principes>* ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/