Message-ID: <0000000000000b2e35061b9078aa@google.com>
Date: Sun, 23 Jun 2024 08:39:23 -0700
From: syzbot <syzbot+fe3566bcb509ae7764ef@...kaller.appspotmail.com>
To: boris@....io, 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_free_extent (2)

Hello,

syzbot found the following issue on:

HEAD commit:    2ccbdf43d5e7 Merge tag 'for-linus' of git://git.kernel.org..
git tree:       upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=10aed446980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c79815c08cc14227
dashboard link: https://syzkaller.appspot.com/bug?extid=fe3566bcb509ae7764ef
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=10ebe941980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1374b3de980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/35e32e9073a7/disk-2ccbdf43.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/6c6e34658d16/vmlinux-2ccbdf43.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4417e7ef76ed/bzImage-2ccbdf43.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/b1cd2f1f0c7e/mount_0.gz

The issue was bisected to:

commit cecbb533b5fcec4ff77e786b7f94457f6cacd9e7
Author: Boris Burkov <boris@....io>
Date:   Wed Jun 28 18:00:15 2023 +0000

    btrfs: record simple quota deltas in delayed refs

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15a47be2980000
final oops:     https://syzkaller.appspot.com/x/report.txt?x=17a47be2980000
console output: https://syzkaller.appspot.com/x/log.txt?x=13a47be2980000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+fe3566bcb509ae7764ef@...kaller.appspotmail.com
Fixes: cecbb533b5fc ("btrfs: record simple quota deltas in delayed refs")

BTRFS: Transaction aborted (error -2)
WARNING: CPU: 0 PID: 5085 at fs/btrfs/extent-tree.c:2984 do_free_extent_accounting fs/btrfs/extent-tree.c:2984 [inline]
WARNING: CPU: 0 PID: 5085 at fs/btrfs/extent-tree.c:2984 __btrfs_free_extent+0x32d1/0x3a10 fs/btrfs/extent-tree.c:3358
Modules linked in:
CPU: 0 PID: 5085 Comm: syz-executor845 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:do_free_extent_accounting fs/btrfs/extent-tree.c:2984 [inline]
RIP: 0010:__btrfs_free_extent+0x32d1/0x3a10 fs/btrfs/extent-tree.c:3358
Code: e8 64 b0 b0 fd 90 0f 0b 90 90 e9 3c f3 ff ff e8 b5 81 ee fd 90 48 c7 c7 00 2e 0b 8c 44 8b 6c 24 18 44 89 ee e8 40 b0 b0 fd 90 <0f> 0b 90 90 4c 8b 24 24 e9 4f f3 ff ff e8 8d 81 ee fd 90 48 c7 c7
RSP: 0018:ffffc9000352f220 EFLAGS: 00010246
RAX: 7e1377ca92db5900 RBX: ffff888024e3c001 RCX: ffff88807c1f0000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000352f3f0 R08: ffffffff81585742 R09: fffffbfff1c39994
R10: dffffc0000000000 R11: fffffbfff1c39994 R12: dffffc0000000000
R13: 00000000fffffffe R14: 0000000000000000 R15: ffff888063a8b5c8
FS:  000055556fa3c3c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005648b40a4798 CR3: 0000000023a7e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 run_delayed_tree_ref fs/btrfs/extent-tree.c:1736 [inline]
 run_one_delayed_ref fs/btrfs/extent-tree.c:1762 [inline]
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:2027 [inline]
 __btrfs_run_delayed_refs+0x117c/0x4670 fs/btrfs/extent-tree.c:2097
 btrfs_run_delayed_refs+0xe3/0x2c0 fs/btrfs/extent-tree.c:2209
 btrfs_commit_transaction+0xf5d/0x3740 fs/btrfs/transaction.c:2400
 sync_filesystem+0x1c8/0x230 fs/sync.c:66
 generic_shutdown_super+0x72/0x2d0 fs/super.c:621
 kill_anon_super+0x3b/0x70 fs/super.c:1226
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2096
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1267
 task_work_run+0x24f/0x310 kernel/task_work.c:180
 ptrace_notify+0x2d2/0x380 kernel/signal.c:2402
 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+0x273/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fda22d8de67
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:00007fffaba15888 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fda22d8de67
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffaba15940
RBP: 00007fffaba15940 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000206 R12: 00007fffaba16a00
R13: 000055556fa3d700 R14: 431bde82d7b634db R15: 00007fffaba169a4
 </TASK>


---
This report is generated by a bot. It may contain errors.
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For information about bisection process see: https://goo.gl/tpsmEJ#bisection

If the report is already addressed, let syzbot know by replying with:
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