------------[ cut here ]------------ btrfs_abort_should_print_stack(__error) WARNING: fs/btrfs/extent-tree.c:3429 at __btrfs_free_extent+0x1fd1/0x39c0 fs/btrfs/extent-tree.c:3429, CPU#0: syz.0.0/5334 Modules linked in: CPU: 0 UID: 0 PID: 5334 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__btrfs_free_extent+0x1fd1/0x39c0 fs/btrfs/extent-tree.c:3429 Code: 00 b6 fd 45 85 f6 0f 85 e0 05 00 00 e8 18 fb b5 fd e9 47 09 00 00 e8 0e fb b5 fd eb 10 e8 07 fb b5 fd eb 09 e8 00 fb b5 fd 90 <0f> 0b 90 4c 8b 7c 24 10 44 89 e1 f7 d9 e9 93 e7 ff ff e8 58 a0 cc RSP: 0018:ffffc9000eadf460 EFLAGS: 00010287 RAX: ffffffff841139c0 RBX: ffff888052550001 RCX: 0000000000100000 RDX: ffffc90020001000 RSI: 0000000000003523 RDI: 0000000000003524 RBP: ffffc9000eadf610 R08: ffff888000b80000 R09: 0000000000000003 R10: 00000000fffffffb R11: 0000000000000002 R12: 00000000ffffffe4 R13: ffff888043e2a5e0 R14: dffffc0000000000 R15: 00000000ffffffe4 FS: 00007f6b58f266c0(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6b57faed40 CR3: 0000000052436000 CR4: 0000000000352ef0 Call Trace: run_delayed_tree_ref fs/btrfs/extent-tree.c:1824 [inline] run_one_delayed_ref fs/btrfs/extent-tree.c:1851 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:2058 [inline] __btrfs_run_delayed_refs+0x166c/0x43b0 fs/btrfs/extent-tree.c:2134 btrfs_run_delayed_refs+0xdc/0x2a0 fs/btrfs/extent-tree.c:2246 btrfs_commit_transaction+0x28a/0x30b0 fs/btrfs/transaction.c:2256 btrfs_quota_enable+0x10ff/0x1e20 fs/btrfs/qgroup.c:1237 btrfs_ioctl_quota_ctl+0x186/0x1f0 fs/btrfs/ioctl.c:3566 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6b57f9e0d9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6b58f25fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f6b58226090 RCX: 00007f6b57f9e0d9 RDX: 00002000000000c0 RSI: 00000000c0109428 RDI: 0000000000000003 RBP: 00007f6b58035024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6b58226128 R14: 00007f6b58226090 R15: 00007ffc82fbc128