From: syzbot <syzbot+10e8dae9863cb83db623@syzkaller.appspotmail.com>
To: clm@fb.com, dsterba@suse.com, josef@toxicpanda.com,
linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [btrfs?] WARNING in btrfs_release_global_block_rsv
Date: Sat, 18 Nov 2023 22:06:24 -0800 [thread overview]
Message-ID: <0000000000005eb612060a7b2b01@google.com> (raw)
In-Reply-To: <000000000000cf826706067d18fd@google.com>
syzbot has found a reproducer for the following issue on:
HEAD commit: 23dfa043f6d5 Merge tag 'i2c-for-6.7-rc2' of git://git.kern..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=123446f4e80000
kernel config: https://syzkaller.appspot.com/x/.config?x=d05dd66e2eb2c872
dashboard link: https://syzkaller.appspot.com/bug?extid=10e8dae9863cb83db623
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=17722e24e80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11201350e80000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/9653b0ce60b2/disk-23dfa043.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/edbde0f08008/vmlinux-23dfa043.xz
kernel image: https://storage.googleapis.com/syzbot-assets/5490b400b0f9/bzImage-23dfa043.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/5b312257ba2d/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+10e8dae9863cb83db623@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5065 at fs/btrfs/block-rsv.c:459 btrfs_release_global_block_rsv+0x24f/0x270 fs/btrfs/block-rsv.c:459
Modules linked in:
CPU: 0 PID: 5065 Comm: syz-executor138 Not tainted 6.7.0-rc1-syzkaller-00304-g23dfa043f6d5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:btrfs_release_global_block_rsv+0x24f/0x270 fs/btrfs/block-rsv.c:459
Code: 0f 0b 90 e9 e6 fe ff ff e8 4e d0 d6 fd 90 0f 0b 90 e9 10 ff ff ff e8 40 d0 d6 fd 90 0f 0b 90 e9 3a ff ff ff e8 32 d0 d6 fd 90 <0f> 0b 90 e9 6b ff ff ff e8 24 d0 d6 fd 90 0f 0b 90 eb 8d 66 2e 0f
RSP: 0018:ffffc90003c779f8 EFLAGS: 00010293
RAX: ffffffff83b7ae7e RBX: 000000000005e000 RCX: ffff888075723b80
RDX: 0000000000000000 RSI: 000000000005e000 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff83b7ade4 R09: 1ffff110280edd00
R10: dffffc0000000000 R11: ffffed10280edd01 R12: ffff88814076e000
R13: ffff88814076e058 R14: ffff88801ed3c418 R15: dffffc0000000000
FS: 0000555556ab23c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f2b88cc448 CR3: 000000001ab8c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
btrfs_free_block_groups+0xc39/0x1070 fs/btrfs/block-group.c:4366
close_ctree+0x75a/0xd40 fs/btrfs/disk-io.c:4389
generic_shutdown_super+0x13a/0x2c0 fs/super.c:696
kill_anon_super+0x3b/0x70 fs/super.c:1295
btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2097
deactivate_locked_super+0xc1/0x130 fs/super.c:484
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1256
task_work_run+0x24a/0x300 kernel/task_work.c:180
ptrace_notify+0x2cd/0x380 kernel/signal.c:2399
ptrace_report_syscall include/linux/ptrace.h:411 [inline]
ptrace_report_syscall_exit include/linux/ptrace.h:473 [inline]
syscall_exit_work kernel/entry/common.c:251 [inline]
syscall_exit_to_user_mode_prepare kernel/entry/common.c:278 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x168/0x2a0 kernel/entry/common.c:296
do_syscall_64+0x52/0x110 arch/x86/entry/common.c:88
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f7262b90fa7
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:00007ffd1c915058 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7262b90fa7
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffd1c915110
RBP: 00007ffd1c915110 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffd1c9161c0
R13: 0000555556ab3700 R14: 431bde82d7b634db R15: 00007ffd1c916164
</TASK>
---
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
next prev parent reply other threads:[~2023-11-19 6:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-29 10:43 [syzbot] [btrfs?] WARNING in btrfs_release_global_block_rsv syzbot
2023-11-19 6:06 ` syzbot [this message]
2023-11-20 0:46 ` syzbot
2024-02-24 9:37 ` syzbot
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