Hello, syzbot found the following issue on: HEAD commit: 42dc814987c1 Merge tag 'media/v6.6-2' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=153c42d4680000 kernel config: https://syzkaller.appspot.com/x/.config?x=e4ca82a1bedd37e4 dashboard link: https://syzkaller.appspot.com/bug?extid=53034ab3f4d670ca496b compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/cb83da482fb0/disk-42dc8149.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7a37cd631377/vmlinux-42dc8149.xz kernel image: https://storage.googleapis.com/syzbot-assets/d1323cd7f312/bzImage-42dc8149.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+53034ab3f4d670ca496b@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5082 at fs/btrfs/space-info.h:198 btrfs_add_reserved_bytes+0x4b4/0x7b0 fs/btrfs/block-group.c:3694 Modules linked in: CPU: 1 PID: 5082 Comm: syz-executor.2 Not tainted 6.6.0-rc2-syzkaller-00048-g42dc814987c1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:btrfs_space_info_update_bytes_may_use fs/btrfs/space-info.h:198 [inline] RIP: 0010:btrfs_add_reserved_bytes+0x4b4/0x7b0 fs/btrfs/block-group.c:3694 Code: 5c 24 28 74 08 48 89 df e8 59 ef 32 fe 48 8b 2b 48 89 ef 48 8b 5c 24 30 48 89 de e8 16 89 d8 fd 48 39 dd 73 0b e8 fc 86 d8 fd <0f> 0b 31 ed eb 26 e8 f1 86 d8 fd 48 8b 5c 24 28 48 8b 44 24 40 42 RSP: 0018:ffffc9000421ed70 EFLAGS: 00010293 RAX: ffffffff83b58404 RBX: 0000000000001000 RCX: ffff88801cd80000 RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff83b583fa R09: 1ffffffff1d34cfd R10: dffffc0000000000 R11: fffffbfff1d34cfe R12: ffff88807be76800 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000001000 FS: 0000555556b91480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3123a06d58 CR3: 00000000821cd000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> find_free_extent+0x3aa1/0x5770 fs/btrfs/extent-tree.c:4387 btrfs_reserve_extent+0x422/0x800 fs/btrfs/extent-tree.c:4514 btrfs_alloc_tree_block+0x20e/0x1800 fs/btrfs/extent-tree.c:4929 __btrfs_cow_block+0x465/0x1b00 fs/btrfs/ctree.c:546 btrfs_cow_block+0x403/0x780 fs/btrfs/ctree.c:712 commit_cowonly_roots+0x197/0x860 fs/btrfs/transaction.c:1299 btrfs_commit_transaction+0xff4/0x3720 fs/btrfs/transaction.c:2435 close_ctree+0x3dd/0xd40 fs/btrfs/disk-io.c:4356 generic_shutdown_super+0x13a/0x2c0 fs/super.c:693 kill_anon_super+0x3b/0x70 fs/super.c:1292 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2144 deactivate_locked_super+0xa4/0x110 fs/super.c:481 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0019a7de17 Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc591d0408 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0019a7de17 RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc591d04c0 RBP: 00007ffc591d04c0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc591d1580 R13: 00007f0019ac73b9 R14: 00000000001f9f05 R15: 000000000000000d </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. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
