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From:   Yikebaer Aizezi <yikebaer61@gmail.com>
Date:   Tue, 26 Sep 2023 10:18:21 +0800
Message-ID: <CALcu4rb4XP1G=BM9c-Za-p26qN=itbhfU6esn5SfHjuZn8pz-A@mail.gmail.com>
Subject: WARNING in btrfs_space_info_update_bytes_may_use
To:     clm@fb.com, josef@toxicpanda.com, dsterba@suse.com
Cc:     linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org
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Hello,

When using Healer to fuzz the Latest Linux-6.6-rc3,  the following crash
was triggered.

HEAD commit: 6465e260f48790807eef06b583b38ca9789b6072 ( Linux 6.6-rc3=EF=BC=
=89
git tree: upstream

console output:
https://drive.google.com/file/d/1JlSPfRbqIlpTkYG9_W2ClYiTOORXlnj4/view?usp=
=3Ddrive_link
kernel config:https://drive.google.com/file/d/1CFQ24OVix2RivZgCj1ie4QPJUoL8=
rtbD/view?usp=3Ddrive_link
C reproducer:https://drive.google.com/file/d/1cqwuczXJYPG6KSJjzB_Er6QrS7iJn=
pVc/view?usp=3Ddrive_link
Syzlang reproducer:
https://drive.google.com/file/d/1-Mp-cztmSoKVGXm_kfNlA_FUgV3zT4f5/view?usp=
=3Ddrive_link


If you fix this issue, please add the following tag to the commit:
Reported-by: Yikebaer Aizezi <yikebaer61@gmail.com>

------------[ cut here ]------------
WARNING: CPU: 1 PID: 8100 at fs/btrfs/space-info.h:198
btrfs_space_info_update_bytes_may_use+0x448/0x590
fs/btrfs/space-info.h:198
Modules linked in:
CPU: 1 PID: 8100 Comm: syz-executor.3 Not tainted 6.6.0-rc3-g6465e260f487 #=
2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:btrfs_space_info_update_bytes_may_use+0x448/0x590
fs/btrfs/space-info.h:198
Code: fd e9 69 fc ff ff e8 a7 8e f7 fd 49 89 ed 4c 89 e6 49 f7 dd 4c
89 ef e8 76 8a f7 fd 4d 39 e5 0f 86 7c fd ff ff e8 88 8e f7 fd <0f> 0b
45 31 e4 e9 75 fd ff ff e8 79 8e f7 fd 48 8d 7b 18 be ff ff
RSP: 0018:ffffc90002f6fad8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88802642a800 RCX: 0000000000000000
RDX: ffff8880152c0000 RSI: ffffffff838a4bc8 RDI: 0000000000000006
RBP: ffffffffffa80000 R08: 0000000000000006 R09: 0000000000580000
R10: 000000000057c000 R11: 0000000000000001 R12: 000000000057c000
R13: 0000000000580000 R14: ffff88802642a860 R15: 0000000000000004
FS:  000055555745a480(0000) GS:ffff888135c00000(0000) knlGS:000000000000000=
0
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c321000 CR3: 000000001840f000 CR4: 0000000000750ee0
PKRU: 55555554
Call Trace:
 <TASK>
 btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:230 [inline]
 block_rsv_release_bytes fs/btrfs/block-rsv.c:154 [inline]
 btrfs_block_rsv_release+0x4ab/0x5e0 fs/btrfs/block-rsv.c:293
 btrfs_release_global_block_rsv+0x22/0x2e0 fs/btrfs/block-rsv.c:443
 btrfs_free_block_groups+0xb9d/0x13d0 fs/btrfs/block-group.c:4380
 close_ctree+0x548/0xda0 fs/btrfs/disk-io.c:4413
 generic_shutdown_super+0x15d/0x3c0 fs/super.c:693
 kill_anon_super+0x36/0x60 fs/super.c:1292
 btrfs_kill_super+0x38/0x50 fs/btrfs/super.c:2144
 deactivate_locked_super+0x94/0x170 fs/super.c:481
 deactivate_super+0xad/0xd0 fs/super.c:514
 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1254
 task_work_run+0x164/0x250 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x215/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:296
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdc5389070b
Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 90 f3 0f 1e fa 31 f6
e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 00 00 00 0f 05 <48> 3d
00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 b0 ff ff ff f7 d8
RSP: 002b:00007ffdcf04dcd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fdc5389070b
RDX: 00007fdc53828280 RSI: 000000000000000a RDI: 00007ffdcf04dd90
RBP: 00007ffdcf04dd90 R08: 0000000000000000 R09: 00007ffdcf04db60
R10: 000055555745ba0b R11: 0000000000000246 R12: 00007fdc538ef312
R13: 00007ffdcf04ee70 R14: 000055555745b970 R15: 00007ffdcf04ee60
 </TASK>