Hello, syzbot found the following issue on: HEAD commit: e32cde8d2bd7 Merge tag 'sched_ext-for-6.12-rc1-fixes-1' of.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12e8bdd0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1b5201b91035a876 dashboard link: https://syzkaller.appspot.com/bug?extid=217a976dc26ef2fa8711 compiler: gcc (Debian 12.2.0-14) 12.2.0, 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/a585cdb91cda/disk-e32cde8d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/dbeec5d7b296/vmlinux-e32cde8d.xz kernel image: https://storage.googleapis.com/syzbot-assets/000fd790e08a/bzImage-e32cde8d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+217a976dc26ef2fa8711@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5296 at fs/fuse/file.c:1989 fuse_write_file_get fs/fuse/file.c:1989 [inline] WARNING: CPU: 0 PID: 5296 at fs/fuse/file.c:1989 fuse_write_file_get fs/fuse/file.c:1986 [inline] WARNING: CPU: 0 PID: 5296 at fs/fuse/file.c:1989 fuse_writepages+0x497/0x5a0 fs/fuse/file.c:2368 Modules linked in: CPU: 0 UID: 0 PID: 5296 Comm: kworker/u8:8 Not tainted 6.12.0-rc1-syzkaller-00031-ge32cde8d2bd7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: writeback wb_workfn (flush-0:52) RIP: 0010:fuse_write_file_get fs/fuse/file.c:1989 [inline] RIP: 0010:fuse_write_file_get fs/fuse/file.c:1986 [inline] RIP: 0010:fuse_writepages+0x497/0x5a0 fs/fuse/file.c:2368 Code: 00 00 00 44 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc e8 79 b6 90 fe 48 8b 7c 24 08 e8 af 6f 27 08 e8 6a b6 90 fe 90 <0f> 0b 90 41 bf fb ff ff ff eb 8b e8 59 b6 90 fe 48 8b 7c 24 18 be RSP: 0018:ffffc900044ff4a8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffc900044ff4f8 RCX: 0000000000000000 RDX: ffff88802d42da00 RSI: ffffffff82fcd286 RDI: 0000000000000001 RBP: ffff88805c994aa0 R08: 0000000000000000 R09: ffffed100b9329d7 R10: ffff88805c994ebb R11: 0000000000000003 R12: ffffc900044ff840 R13: ffff88805c994880 R14: ffff88805f330000 R15: ffff88805c994d50 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020055000 CR3: 000000005df4a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> do_writepages+0x1a3/0x7f0 mm/page-writeback.c:2683 __writeback_single_inode+0x166/0xfa0 fs/fs-writeback.c:1658 writeback_sb_inodes+0x603/0xfa0 fs/fs-writeback.c:1954 wb_writeback+0x199/0xb50 fs/fs-writeback.c:2134 wb_do_writeback fs/fs-writeback.c:2281 [inline] wb_workfn+0x294/0xbc0 fs/fs-writeback.c:2321 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 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 </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
