linux-kernel - [syzbot] [btrfs?] WARNING in btrfs_release_global_block

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Message-ID: <673d458f.050a0220.363a1b.0003.GAE@google.com>
Date: Tue, 19 Nov 2024 18:12:31 -0800
From: syzbot <syzbot+48ed002119c0f19daf63@...kaller.appspotmail.com>
To: clm@...com, dsterba@...e.com, josef@...icpanda.com, 
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [btrfs?] WARNING in btrfs_release_global_block_rsv (2)

Hello,

syzbot found the following issue on:

HEAD commit:    f868cd251776 Merge tag 'drm-fixes-2024-11-16' of https://g..
git tree:       upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=12dc1b5f980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1503500c6f615d24
dashboard link: https://syzkaller.appspot.com/bug?extid=48ed002119c0f19daf63
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11dfd130580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15dfd130580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/66a42ffd702c/disk-f868cd25.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b0bd620eb146/vmlinux-f868cd25.xz
kernel image: https://storage.googleapis.com/syzbot-assets/6d14a828c8cb/bzImage-f868cd25.xz
mounted in repro #1: https://storage.googleapis.com/syzbot-assets/28ab3d88b5f1/mount_0.gz
mounted in repro #2: https://storage.googleapis.com/syzbot-assets/f64e4ef84354/mount_1.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+48ed002119c0f19daf63@...kaller.appspotmail.com

BTRFS info (device loop1): last unmount of filesystem b65e5074-7275-4634-a025-a4403a9281c2
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5830 at fs/btrfs/block-rsv.c:459 btrfs_release_global_block_rsv+0x261/0x270 fs/btrfs/block-rsv.c:459
Modules linked in:
CPU: 1 UID: 0 PID: 5830 Comm: syz-executor323 Not tainted 6.12.0-rc7-syzkaller-00187-gf868cd251776 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:btrfs_release_global_block_rsv+0x261/0x270 fs/btrfs/block-rsv.c:459
Code: 0f 0b 90 e9 0c ff ff ff e8 2c 0d bd fd 90 0f 0b 90 e9 36 ff ff ff e8 1e 0d bd fd 90 0f 0b 90 e9 67 ff ff ff e8 10 0d bd fd 90 <0f> 0b 90 eb 89 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffc90003baf9b8 EFLAGS: 00010293
RAX: ffffffff83d7dca0 RBX: ffffffffffff0000 RCX: ffff888035a31e00
RDX: 0000000000000000 RSI: ffffffffffff0000 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff83d7dc25 R09: 1ffff1100540de01
R10: dffffc0000000000 R11: ffffed100540de02 R12: ffff88802a06a000
R13: 1ffff1100540d42e R14: ffff8880336f4400 R15: dffffc0000000000
FS:  000055558bffa3c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb775400000 CR3: 000000007e426000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_free_block_groups+0xc3c/0x1080 fs/btrfs/block-group.c:4472
 close_ctree+0x772/0xd60 fs/btrfs/disk-io.c:4378
 generic_shutdown_super+0x139/0x2d0 fs/super.c:642
 kill_anon_super+0x3b/0x70 fs/super.c:1237
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2114
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
 task_work_run+0x24f/0x310 kernel/task_work.c:239
 ptrace_notify+0x2d2/0x380 kernel/signal.c:2404
 ptrace_report_syscall include/linux/ptrace.h:415 [inline]
 ptrace_report_syscall_exit include/linux/ptrace.h:477 [inline]
 syscall_exit_work+0xc6/0x190 kernel/entry/common.c:173
 syscall_exit_to_user_mode_prepare kernel/entry/common.c:200 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:205 [inline]
 syscall_exit_to_user_mode+0x279/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb77d64c1e7
Code: 08 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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:00007ffe158a5b88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb77d64c1e7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe158a5c40
RBP: 00007ffe158a5c40 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffe158a6cf0
R13: 000055558bffb700 R14: 431bde82d7b634db R15: 00007ffe158a6c94
 </TASK>


---
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