On Mon, Feb 27, 2023 at 03:29:12PM +0800, Pengfei Xu wrote: > Hi Dave and Helge Deller, > > Thanks Helge Deller to add the xfs mailing list! > > On 2023-02-27 at 09:34:03 +1100, Dave Chinner wrote: > > On Sat, Feb 25, 2023 at 08:58:25PM +0100, Helge Deller wrote: > > > Looping in xfs mailing list as this seems to be a XFS problem... > > > On 2/24/23 05:39, Pengfei Xu wrote: > > > > [ 71.225966] XFS (loop1): Quotacheck: Unsuccessful (Error -5): Disabling quotas. > > > > [ 71.226310] xfs filesystem being mounted at /root/syzkaller.qCVHXV/0/file0 supports timestamps until 2038 (0x7fffffff) > > > > [ 71.227591] BUG: kernel NULL pointer dereference, address: 00000000000002a8 > > > > [ 71.227873] #PF: supervisor read access in kernel mode > > > > [ 71.228077] #PF: error_code(0x0000) - not-present page > > > > [ 71.228280] PGD c313067 P4D c313067 PUD c1fe067 PMD 0 > > > > [ 71.228494] Oops: 0000 [#1] PREEMPT SMP NOPTI > > > > [ 71.228673] CPU: 0 PID: 161 Comm: kworker/0:4 Not tainted 6.2.0-c9c3395d5e3d #1 > > > > [ 71.228961] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 > > > > [ 71.229400] Workqueue: xfs-inodegc/loop1 xfs_inodegc_worker > > > > [ 71.229626] RIP: 0010:xfs_dquot_alloc+0x95/0x1e0 > > > > [ 71.229820] Code: 80 15 ad 85 48 c7 c6 7c 6b 92 83 e8 75 0f 6b ff 49 8b 8d 60 01 00 00 44 89 e0 31 d2 48 c7 c6 18 ae 8f 83 48 8d bb 18 02 00 00 <f7> b1 a8 02 2 > > > > [ 71.230528] RSP: 0018:ffffc90000babc20 EFLAGS: 00010246 > > > > [ 71.230737] RAX: 0000000000000009 RBX: ffff8880093c98c0 RCX: 0000000000000000 > > > > [ 71.231014] RDX: 0000000000000000 RSI: ffffffff838fae18 RDI: ffff8880093c9ad8 > > > > [ 71.231292] RBP: ffffc90000babc48 R08: 0000000000000002 R09: 0000000000000000 > > > > [ 71.231570] R10: ffffc90000baba80 R11: ffff88800af08d98 R12: 0000000000000009 > > > > [ 71.231850] R13: ffff88800c4bc000 R14: ffff88800c4bc000 R15: 0000000000000004 > > > > [ 71.232129] FS: 0000000000000000(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000 > > > > [ 71.232441] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > > > [ 71.232668] CR2: 00000000000002a8 CR3: 000000000a1d2002 CR4: 0000000000770ef0 > > > > [ 71.232949] PKRU: 55555554 > > > > [ 71.233061] Call Trace: > > > > [ 71.233162] <TASK> > > > > [ 71.233254] xfs_qm_dqread+0x46/0x440 > > > > [ 71.233410] ? xfs_qm_dqget_inode+0x13e/0x500 > > > > [ 71.233596] xfs_qm_dqget_inode+0x154/0x500 > > > > [ 71.233774] xfs_qm_dqattach_one+0x142/0x3c0 > > > > [ 71.233961] xfs_qm_dqattach_locked+0x14a/0x170 > > > > [ 71.234149] xfs_qm_dqattach+0x52/0x80 > > > > [ 71.234307] xfs_inactive+0x186/0x340 > > > > [ 71.234461] xfs_inodegc_worker+0xd3/0x430 > > > > [ 71.234630] process_one_work+0x3b1/0x960 > > > > [ 71.234802] worker_thread+0x52/0x660 > > > > [ 71.234957] ? __pfx_worker_thread+0x10/0x10 > > > > [ 71.235136] kthread+0x161/0x1a0 > > > > [ 71.235279] ? __pfx_kthread+0x10/0x10 > > > > [ 71.235442] ret_from_fork+0x29/0x50 > > > > [ 71.235602] </TASK> > > > > [ 71.235696] Modules linked in: > > > > [ 71.235826] CR2: 00000000000002a8 > > > > [ 71.235964] ---[ end trace 0000000000000000 ]--- > > > > Looks like a quota disable race with background inode inactivation > > reading in dquots. > > > > Can you test the patch below? > > > Thanks for your fixed patch in short time! > I installed below patch on top of v6.2 kernel. > And there was no any BUG dmesg anyway, so the fixed patch worked. > > And left some "Internal error xfs_iunlink_remove_inode" related Call Trace. > I'm new to xfs, could you help to check if it is some other issue or we > could ignore it. I'm guessing this the filesystem detecting a corruption and shutting down. That's normal behaviour when tools like syzkaller through random crap at the filesystem and expect it to like it. > I put the dmesg in bugzilla attachment as follow: > https://bugzilla.kernel.org/show_bug.cgi?id=217078 -> > https://bugzilla.kernel.org/attachment.cgi?id=303793 I am not authorised to access bug 217078, so I can't read any of this. Just cut out and attach the relevant dmesg output to the email. -Dave. -- Dave Chinner david@xxxxxxxxxxxxx
