https://bugzilla.kernel.org/show_bug.cgi?id=216639 --- Comment #2 from Dave Chinner (david@xxxxxxxxxxxxx) --- On Sun, Oct 30, 2022 at 02:38:17AM +0000, bugzilla-daemon@xxxxxxxxxx wrote: > Many xfstests cases fail [1] and hit below kernel > (HEAD=05c31d25cc9678cc173cf12e259d638e8a641f66) warning [2] (on x86_64 and > s390x). No special mkfs or mount options, just simple default xfs testing, > without any MKFS_OPTIONS or MOUNT_OPTIONS specified. > > [1] > FSTYP -- xfs (debug) > PLATFORM -- Linux/x86_64 hp-xxxxxx-xx-xxxx 6.1.0-rc2+ #1 SMP > PREEMPT_DYNAMIC Fri Oct 28 19:52:51 EDT 2022 > MKFS_OPTIONS -- -f -m > crc=1,finobt=1,rmapbt=0,reflink=1,bigtime=1,inobtcount=1 > /dev/vda2 > MOUNT_OPTIONS -- -o context=system_u:object_r:root_t:s0 /dev/vda2 > /mnt/xfstests/scratch > > generic/061 _check_dmesg: something found in dmesg (see > /var/lib/xfstests/results//generic/061.dmesg) > > Ran: generic/061 > Failures: generic/061 > Failed 1 of 1 tests > > [2] > [14281.743118] run fstests generic/061 at 2022-10-29 01:00:39 > [14295.930483] page:000000001065a86b refcount:0 mapcount:0 > mapping:0000000064faa2f2 index:0x40 pfn:0x143040 > [14295.947825] head:000000001065a86b order:5 compound_mapcount:0 > compound_pincount:0 > [14295.950100] memcg:ffff88817efe2000 > [14295.951215] aops:xfs_address_space_operations [xfs] ino:8e dentry > name:"061.429109" > [14295.955474] flags: > 0x17ffffc0010035(locked|uptodate|lru|active|head|node=0|zone=2|lastcpupid=0x1fffff) > [14295.958302] raw: 0017ffffc0010035 ffffea0004756c08 ffffea00050c1788 > ffff88811e804448 > [14295.960624] raw: 0000000000000040 0000000000000000 00000000ffffffff > ffff88817efe2000 > [14295.962927] page dumped because: VM_WARN_ON_ONCE_PAGE(page_tail->private > != 0) > [14295.965744] ------------[ cut here ]------------ > [14295.967201] WARNING: CPU: 1 PID: 429349 at mm/huge_memory.c:2465 > __split_huge_page_tail+0xab0/0xce0 .... > [14296.015290] Call Trace: > [14296.016083] <TASK> > [14296.018235] __split_huge_page+0x2a5/0x11b0 > [14296.019675] split_huge_page_to_list+0xb13/0xf30 > [14296.027369] truncate_inode_partial_folio+0x1d9/0x370 > [14296.028940] truncate_inode_pages_range+0x350/0xbc0 > [14296.059204] truncate_pagecache+0x63/0x90 > [14296.060471] xfs_setattr_size+0x2a2/0xc50 [xfs] Yup, splitting a multi-page folio during truncate. Looks like this has already been fixed in the Linus kernel by commit 5aae9265ee1a ("mm: prep_compound_tail() clear page->private") here: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5aae9265ee1a30cf716d6caf6b29fe99b9d55130 It was merged after your currrent head commit... This won't reproduce on ext4 because it doesn't use multi-page folios in the page cache. Cheers, Dave. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
