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charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 2ccbdf43d5e7 Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1689a256980000 kernel config: https://syzkaller.appspot.com/x/.config?x=b8786f381e62940f dashboard link: https://syzkaller.appspot.com/bug?extid=4366624c0b5aac4906cf compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=110cda0e980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=164f91fe980000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-2ccbdf43.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c40c1cd990d2/vmlinux-2ccbdf43.xz kernel image: https://storage.googleapis.com/syzbot-assets/a2a94050804e/bzImage-2ccbdf43.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/a79f654b4644/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4366624c0b5aac4906cf@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 10 at fs/bcachefs/super.c:525 bch2_fs_read_write_early+0x8a/0xa0 fs/bcachefs/super.c:525 Modules linked in: CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Workqueue: bcachefs_write_ref bch2_delete_dead_snapshots_work RIP: 0010:bch2_fs_read_write_early+0x8a/0xa0 fs/bcachefs/super.c:525 Code: ac b8 76 fd 48 8d bb 78 02 00 00 be ff ff ff ff e8 0b cd d0 06 31 ff 89 c5 89 c6 e8 90 b3 76 fd 85 ed 75 c7 e8 87 b8 76 fd 90 <0f> 0b 90 eb bc 48 c7 c7 58 a2 e4 8f e8 c5 8b d2 fd eb 9b 0f 1f 00 RSP: 0018:ffffc900000d7910 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888041080000 RCX: ffffffff84172cc0 RDX: ffff888017e90000 RSI: ffffffff84172cc9 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 1ffffffff272c7ee R12: ffff8880410801a8 R13: ffff888041080ae0 R14: 0000000000000001 R15: ffff88801f971800 FS: 0000000000000000(0000) GS:ffff88806b000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555581085788 CR3: 0000000025a9e000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bch2_delete_dead_snapshots+0xfdc/0x4e50 fs/bcachefs/snapshot.c:1569 bch2_delete_dead_snapshots_work+0x20/0x160 fs/bcachefs/snapshot.c:1690 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 --- 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@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title 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. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup