Hello, syzbot found the following issue on: HEAD commit: 99ddf2254feb Merge tag 'trace-v6.3-rc5' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10d37ab3c80000 kernel config: https://syzkaller.appspot.com/x/.config?x=5666fa6aca264e42 dashboard link: https://syzkaller.appspot.com/bug?extid=ba5b9ee1d6b1efe0eacf compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/907a43450c5c/disk-99ddf225.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a142637e5396/vmlinux-99ddf225.xz kernel image: https://storage.googleapis.com/syzbot-assets/447736ad6200/bzImage-99ddf225.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ba5b9ee1d6b1efe0eacf@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5126 at fs/btrfs/block-group.c:4290 btrfs_free_block_groups+0xbb9/0xe80 fs/btrfs/block-group.c:4289 Modules linked in: CPU: 1 PID: 5126 Comm: syz-executor.4 Not tainted 6.3.0-rc5-syzkaller-00032-g99ddf2254feb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 RIP: 0010:btrfs_free_block_groups+0xbb9/0xe80 fs/btrfs/block-group.c:4289 Code: ef e8 9b 9a 36 fe 48 8d 83 50 ff ff ff 48 89 44 24 08 48 8b 6d 00 31 ff 48 89 ee e8 41 e6 e0 fd 48 85 ed 74 1c e8 f7 e1 e0 fd <0f> 0b 48 8b 7c 24 10 48 8b 74 24 08 31 d2 31 c9 e8 c2 e4 fd ff eb RSP: 0018:ffffc900047bfab8 EFLAGS: 00010293 RAX: ffffffff83a9832a RBX: ffff8881465a30b0 RCX: ffff888024043a80 RDX: 0000000000000000 RSI: 000000000005e000 RDI: 0000000000000000 RBP: 000000000005e000 R08: ffffffff83a980c8 R09: ffffed1028cb4601 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880303c9128 R13: dffffc0000000000 R14: 1ffff11006079225 R15: ffff8880303c9a00 FS: 0000555556f8e400(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555ced708 CR3: 000000002ffce000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> close_ctree+0x742/0xd30 fs/btrfs/disk-io.c:4635 generic_shutdown_super+0x134/0x340 fs/super.c:500 kill_anon_super+0x3b/0x60 fs/super.c:1107 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2133 deactivate_locked_super+0xa4/0x110 fs/super.c:331 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177 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:286 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f019388d5d7 Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 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 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdff37d528 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f019388d5d7 RDX: 00007ffdff37d5fb RSI: 000000000000000a RDI: 00007ffdff37d5f0 RBP: 00007ffdff37d5f0 R08: 00000000ffffffff R09: 00007ffdff37d3c0 R10: 0000555556f8f8b3 R11: 0000000000000246 R12: 00007f01938e6cdc R13: 00007ffdff37e6b0 R14: 0000555556f8f810 R15: 00007ffdff37e6f0 </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.
