Hello, syzbot found the following issue on: HEAD commit: 1d227fcc7222 Merge tag 'net-6.12-rc3' of git://git.kernel... git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=1342205f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=7a3fccdd0bb995 dashboard link: https://syzkaller.appspot.com/bug?extid=b2b14916b77acf8626d7 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=11692840580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12ea6f07980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f64f03b05002/disk-1d227fcc.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3ab8ba99a1b6/vmlinux-1d227fcc.xz kernel image: https://storage.googleapis.com/syzbot-assets/97581c221708/bzImage-1d227fcc.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/0cfc62de73c5/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b2b14916b77acf8626d7@xxxxxxxxxxxxxxxxxxxxxxxxx WARNING: CPU: 0 PID: 5245 at fs/nilfs2/btree.c:2089 nilfs_btree_propagate+0xc79/0xdf0 fs/nilfs2/btree.c:2089 Modules linked in: CPU: 0 UID: 0 PID: 5245 Comm: segctord Not tainted 6.12.0-rc2-syzkaller-00205-g1d227fcc7222 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:nilfs_btree_propagate+0xc79/0xdf0 fs/nilfs2/btree.c:2089 Code: 48 8b 44 24 08 49 8d 74 05 58 e8 12 67 ff ff 48 8b 6c 24 10 43 80 3c 27 00 0f 85 16 fe ff ff e9 19 fe ff ff e8 78 1d 20 fe 90 <0f> 0b 90 e9 ea f3 ff ff e8 6a 1d 20 fe 48 8b 1c 24 48 81 c3 d0 00 RSP: 0018:ffffc90003d873a0 EFLAGS: 00010293 RAX: ffffffff8374c988 RBX: 0000000000000000 RCX: ffff888011dada00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffffff8c47aec8 R08: ffffffff8374bd6c R09: 1ffff1100ec15f96 R10: dffffc0000000000 R11: ffffed100ec15f97 R12: dffffc0000000000 R13: 1ffff1100ec15f9f R14: 1ffff1100ec15f96 R15: ffff8880760afcb0 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8737b0dd58 CR3: 0000000079068000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> nilfs_bmap_propagate+0x75/0x120 fs/nilfs2/bmap.c:345 nilfs_collect_file_data+0x4d/0xd0 fs/nilfs2/segment.c:587 nilfs_segctor_apply_buffers+0x184/0x340 fs/nilfs2/segment.c:1006 nilfs_segctor_scan_file+0x28c/0xa50 fs/nilfs2/segment.c:1045 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1216 [inline] nilfs_segctor_collect fs/nilfs2/segment.c:1540 [inline] nilfs_segctor_do_construct+0x1c28/0x6b90 fs/nilfs2/segment.c:2115 nilfs_segctor_construct+0x181/0x6b0 fs/nilfs2/segment.c:2479 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2587 [inline] nilfs_segctor_thread+0x69e/0xe80 fs/nilfs2/segment.c:2701 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> --- 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@xxxxxxxxxxxxxxxx. 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
