Hello, syzbot found the following issue on: HEAD commit: 06c2afb862f9 Linux 6.5-rc1 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1220cf54a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=150188feee7071a7 dashboard link: https://syzkaller.appspot.com/bug?extid=4100f31f97d5a2276416 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/c208715c3f9e/disk-06c2afb8.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/df15524c5f57/vmlinux-06c2afb8.xz kernel image: https://storage.googleapis.com/syzbot-assets/5f7b49f73ba7/bzImage-06c2afb8.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4100f31f97d5a2276416@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 10155 at fs/udf/udfdecl.h:121 udf_add_free_space.isra.0+0x1b2/0x200 fs/udf/udfdecl.h:121 Modules linked in: CPU: 0 PID: 10155 Comm: syz-executor.1 Not tainted 6.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 RIP: 0010:udf_add_free_space.isra.0+0x1b2/0x200 fs/udf/udfdecl.h:121 Code: 02 84 c0 74 04 3c 03 7e 25 c7 83 50 01 00 00 01 00 00 00 5b 5d 41 5c 41 5d e9 5a c9 9e fe e8 55 c9 9e fe 0f 0b e8 4e c9 9e fe <0f> 0b eb b2 e8 75 ff f1 fe eb d4 e8 ee fe f1 fe e9 6b fe ff ff e8 RSP: 0018:ffffc9000a8cf768 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880177aac00 RCX: 0000000000000000 RDX: ffff8880307a5940 RSI: ffffffff82e61872 RDI: 0000000000000005 RBP: 0000000041105f00 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000041105f00 R11: 0000000000000001 R12: ffff888042aed000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880318d0e28 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f212dd88fb8 CR3: 000000002d003000 CR4: 0000000000350ef0 Call Trace: <TASK> udf_table_free_blocks fs/udf/balloc.c:403 [inline] udf_free_blocks+0x430/0x1330 fs/udf/balloc.c:681 udf_discard_prealloc+0x47b/0x4e0 fs/udf/truncate.c:147 udf_release_file fs/udf/file.c:184 [inline] udf_release_file+0xdc/0x110 fs/udf/file.c:174 __fput+0x40c/0xad0 fs/file_table.c:384 task_work_run+0x16f/0x270 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa9a/0x29a0 kernel/exit.c:874 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024 get_signal+0x249b/0x25f0 kernel/signal.c:2877 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:308 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:301 RIP: 0033:0x7f1c8b28c389 Code: Unable to access opcode bytes at 0x7f1c8b28c35f. RSP: 002b:00007f1c8c08b118 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: 0000000000000000 RBX: 00007f1c8b3abf80 RCX: 00007f1c8b28c389 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f1c8b2d7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe4ed07c0f R14: 00007f1c8c08b300 R15: 0000000000022000 </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 bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
