Hello, syzbot found the following issue on: HEAD commit: 9e4c6c1ad9a1 Merge tag 'io_uring-6.12-20241011' of git://g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17a07b27980000 kernel config: https://syzkaller.appspot.com/x/.config?x=7cd9e7e4a8a0a15b dashboard link: https://syzkaller.appspot.com/bug?extid=d3bebcf5d53a3b1a2019 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f74026db2f8c/disk-9e4c6c1a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f9344dfaa631/vmlinux-9e4c6c1a.xz kernel image: https://storage.googleapis.com/syzbot-assets/7282ccb66a08/bzImage-9e4c6c1a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d3bebcf5d53a3b1a2019@xxxxxxxxxxxxxxxxxxxxxxxxx segctord: attempt to access beyond end of device loop5: rw=0, sector=464, nr_sectors = 8 limit=0 NILFS (loop5): I/O error reading meta-data file (ino=3, block-offset=2) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 9015 at fs/nilfs2/segment.c:1500 nilfs_cancel_segusage fs/nilfs2/segment.c:1500 [inline] WARNING: CPU: 0 PID: 9015 at fs/nilfs2/segment.c:1500 nilfs_segctor_abort_construction+0xe51/0xec0 fs/nilfs2/segment.c:1866 Modules linked in: CPU: 0 UID: 0 PID: 9015 Comm: segctord Not tainted 6.12.0-rc2-syzkaller-00260-g9e4c6c1ad9a1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:nilfs_cancel_segusage fs/nilfs2/segment.c:1500 [inline] RIP: 0010:nilfs_segctor_abort_construction+0xe51/0xec0 fs/nilfs2/segment.c:1866 Code: 8b 04 25 28 00 00 00 48 3b 84 24 a0 00 00 00 75 74 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 c0 6c 75 08 e8 00 13 1a fe 90 <0f> 0b 90 e9 ea f9 ff ff e8 f2 12 1a fe 90 0f 0b 90 e9 93 fb ff ff RSP: 0018:ffffc9000326f680 EFLAGS: 00010293 RAX: ffffffff837ad450 RBX: 00000000fffffffb RCX: ffff888026890000 RDX: 0000000000000000 RSI: 00000000fffffffb RDI: 0000000000000000 RBP: ffffc9000326f770 R08: ffffffff837ace36 R09: 1ffff1100d2d1b40 R10: dffffc0000000000 R11: ffffed100d2d1b41 R12: 000000000000000e R13: 0000000000000003 R14: ffff88805b1f26e8 R15: ffff888070060e18 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559d87803680 CR3: 000000002d42e000 CR4: 0000000000350ef0 Call Trace: <TASK> nilfs_segctor_do_construct+0x6335/0x6b90 fs/nilfs2/segment.c:2179 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+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/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 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
