This is with 5.8.0-rc1 plus the series of seven patches to modify how pagevec_lookup_entries + find_get_entries() work [1]. I think it's unlikely those patches caused this, but it's sporadic so I can't be sure. This one is from generic/457 but I've seen something similar from generic/455. I'm using the following: + echo 'MKFS_OPTIONS="-m reflink=1,rmapbt=1 -i sparse=1 -b size=1024"' >> /ktest/tests/xfstests/local.config + mkfs.$FSTYP -q $TEST_DEV -m reflink=1,rmapbt=1 -i sparse=1 -b size=1024 [1] https://lore.kernel.org/linux-mm/20200819150555.31669-1-willy@xxxxxxxxxxxxx/T/ 6946 XFS (sdc): Internal error ltrec.rm_startblock > bno || ltrec.rm_startblock + ltrec.rm_blockcount < bno + len at line 575 of file fs/xfs/libxfs/xfs_rmap.c. Caller xfs_rmap_unmap+0x5fc/0x900 6946 CPU: 2 PID: 13591 Comm: mount Kdump: loaded Tainted: G W 5.9.0-rc1-00007-g96650d19d84b #452 6946 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1 04/01/2014 6946 Call Trace: 6946 dump_stack+0x5e/0x7a 6946 xfs_corruption_error+0x7c/0x80 6946 ? xfs_rmap_unmap+0x5fc/0x900 6946 xfs_rmap_unmap+0x626/0x900 6946 ? xfs_rmap_unmap+0x5fc/0x900 6946 ? xfs_free_extent_fix_freelist+0x81/0xc0 6946 ? xfs_rmapbt_init_cursor+0x31/0x90 6946 xfs_rmap_finish_one+0x1dd/0x330 6946 xfs_rmap_update_finish_item+0x3f/0x70 6946 xfs_defer_finish_noroll+0x153/0x400 6946 ? kmem_alloc+0x74/0x120 6946 ? xfs_trans_commit+0xb/0x10 6946 __xfs_trans_commit+0x138/0x340 6946 xfs_trans_commit+0xb/0x10 6946 xfs_refcount_recover_cow_leftovers+0x1b9/0x300 6946 xfs_reflink_recover_cow+0x36/0x50 6946 xfs_mountfs+0x5a4/0x910 6946 xfs_fc_fill_super+0x34c/0x560 6946 get_tree_bdev+0x169/0x260 6946 ? xfs_setup_devices+0x80/0x80 6946 xfs_fc_get_tree+0x10/0x20 6946 vfs_get_tree+0x19/0x80 6946 path_mount+0x6ba/0x9f0 6946 __x64_sys_mount+0xe5/0x120 6946 do_syscall_64+0x32/0x50 6946 entry_SYSCALL_64_after_hwframe+0x44/0xa9 6946 RIP: 0033:0x7fa229f96fea 6946 Code: 48 8b 0d a9 0e 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 76 0e 0c 00 f7 d8 64 89 01 48 6946 RSP: 002b:00007ffcb19cf128 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 6946 RAX: ffffffffffffffda RBX: 000055eb7a037970 RCX: 00007fa229f96fea 6946 RDX: 000055eb7a037b80 RSI: 000055eb7a037bc0 RDI: 000055eb7a037ba0 6946 RBP: 00007fa22a2e41c4 R08: 0000000000000000 R09: 000055eb7a03a890 6946 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 6946 R13: 0000000000000000 R14: 000055eb7a037ba0 R15: 000055eb7a037b80 6946 XFS (sdc): Corruption detected. Unmount and run xfs_repair 6946 XFS (sdc): xfs_do_force_shutdown(0x8) called from line 450 of file fs/xfs/libxfs/xfs_defer.c. Return address = ffffffff812ee23b 6946 XFS (sdc): Corruption of in-memory data detected. Shutting down filesystem 6946 XFS (sdc): Please unmount the filesystem and rectify the problem(s) 6946 XFS (sdc): Error -117 recovering leftover CoW allocations. 6946 [failed, exit status 1]XFS (sdb): Unmounting Filesystem
