I have yet to bisect, but have had trouble with recent, post 5.1.0 kernels built from Linus' git head on both i386 (Pentium 4 pc) and amd64 (Athlon II X4 640).
The easiest way to trigger the problem is: git gc on the kernel source tree, although the problem can occur without doing a git gc. The filesystem with the kernel source tree is the root file system, ext3, mounted as: /dev/sdb7 on / type ext3 (rw,relatime,errors=remount-ro) After the "Compressing objects" stage, the following appears in dmesg: [ 848.968550] EXT4-fs error (device sdb7): ext4_get_branch:171: inode #8: block 30343695: comm jbd2/sdb7-8: invalid block [ 849.077426] Aborting journal on device sdb7-8. [ 849.100963] EXT4-fs (sdb7): Remounting filesystem read-only [ 849.100976] jbd2_journal_bmap: journal block not found at offset 989 on sdb7-8 fsck -yv then reports: # fsck -yv fsck from util-linux 2.33.1 e2fsck 1.45.0 (6-Mar-2019) /dev/sdb7: recovering journal /dev/sdb7 contains a file system with errors, check forced. Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Free blocks count wrong (4619656, counted=4619444). Fix? yes Free inodes count wrong (15884075, counted=15884058). Fix? yes /dev/sdb7: ***** FILE SYSTEM WAS MODIFIED ***** Other times, I have gotten: "Inodes that were part of a corrupted orphan linked list found." "Block bitmap differences:" "Free blocks sound wrong for group" No problems have been observed with the 5.1.0 release kernel. Any suggestions for narrowing down the issue welcome. Arthur. -- Sent from my Android device with K-9 Mail. Please excuse my brevity.