Hello, syzbot found the following issue on: HEAD commit: eb7081409f94 Linux 6.1-rc6 git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=100fe5ed880000 kernel config: https://syzkaller.appspot.com/x/.config?x=8cdf448d3b35234 dashboard link: https://syzkaller.appspot.com/bug?extid=6ae213503fb12e87934f compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15c00fe9880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1052d639880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/4a019f55c517/disk-eb708140.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/eb36e890aa8b/vmlinux-eb708140.xz kernel image: https://storage.googleapis.com/syzbot-assets/feee2c23ec64/bzImage-eb708140.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/d8a4f3231ed0/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6ae213503fb12e87934f@xxxxxxxxxxxxxxxxxxxxxxxxx XFS (loop0): Ending clean mount XFS (loop0): Quotacheck needed: Please wait. XFS (loop0): Quotacheck: Done. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3655 at fs/xfs/xfs_dquot.c:801 xfs_qm_dqget_cache_insert+0xff/0x110 Modules linked in: CPU: 1 PID: 3655 Comm: syz-executor106 Not tainted 6.1.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:xfs_qm_dqget_cache_insert+0xff/0x110 fs/xfs/xfs_dquot.c:801 Code: 38 c1 7c a3 48 89 ef e8 5f 46 a1 fe eb 99 44 89 e1 80 e1 07 80 c1 03 38 c1 7c a8 4c 89 e7 e8 d8 45 a1 fe eb 9e e8 f1 2d 4d fe <0f> 0b eb b8 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 41 57 41 56 RSP: 0018:ffffc90003c7f710 EFLAGS: 00010293 RAX: ffffffff833d6a7f RBX: 000000000000ee01 RCX: ffff888021afba80 RDX: 0000000000000000 RSI: ffffffff8d794b70 RDI: 00000000fffffff4 RBP: ffff888023674680 R08: 0000000000000005 R09: ffffffff833d69c8 R10: 0000000000000002 R11: ffff888021afba80 R12: ffff8880779c8800 R13: ffff888023674680 R14: ffff8880779c88f0 R15: 00000000fffffff4 FS: 0000555556ce6300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0ba7315000 CR3: 0000000079452000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> xfs_qm_dqget+0x2dd/0x510 fs/xfs/xfs_dquot.c:874 xfs_qm_vop_dqalloc+0x598/0xe70 fs/xfs/xfs_qm.c:1679 xfs_setattr_nonsize+0x41a/0x1220 fs/xfs/xfs_iops.c:702 xfs_vn_setattr+0x2f5/0x340 fs/xfs/xfs_iops.c:1022 notify_change+0xe38/0x10f0 fs/attr.c:420 chown_common+0x586/0x8f0 fs/open.c:736 do_fchownat+0x165/0x240 fs/open.c:767 __do_sys_lchown fs/open.c:792 [inline] __se_sys_lchown fs/open.c:790 [inline] __x64_sys_lchown+0x81/0x90 fs/open.c:790 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0ba7363a09 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc267deac8 EFLAGS: 00000246 ORIG_RAX: 000000000000005e RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f0ba7363a09 RDX: 0000000000000000 RSI: 000000000000ee01 RDI: 0000000020000100 RBP: 00007ffc267deaf0 R08: 0000000000000002 R09: 00007ffc267deb00 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffc267deb30 R14: 00007ffc267deb10 R15: 0000000000000002 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
