Hello, syzbot found the following issue on: HEAD commit: 052d534373b7 Merge tag 'exfat-for-6.8-rc1' of git://git.ke.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=108ca8b3e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=7c8840a4a09eab8 dashboard link: https://syzkaller.appspot.com/bug?extid=fd404f6b03a58e8bc403 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=1558210be80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14d39debe80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/b1b0ffd73481/disk-052d5343.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c25614b900ba/vmlinux-052d5343.xz kernel image: https://storage.googleapis.com/syzbot-assets/7dd1842e2ad4/bzImage-052d5343.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/291ad1624ec1/mount_3.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+fd404f6b03a58e8bc403@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ kernel BUG at lib/iov_iter.c:582! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5043 Comm: syz-executor166 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:iov_iter_revert lib/iov_iter.c:582 [inline] RIP: 0010:iov_iter_revert+0x328/0x360 lib/iov_iter.c:567 Code: 8e 94 78 fd e9 8f fd ff ff e8 e4 94 78 fd e9 de fe ff ff e8 ba 94 78 fd eb a2 e8 d3 94 78 fd e9 12 fe ff ff e8 b9 8c 21 fd 90 <0f> 0b e8 c1 94 78 fd e9 23 fe ff ff e8 b7 94 78 fd e9 64 fe ff ff RSP: 0018:ffffc9000337f9e0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000001bca00 RCX: ffffffff84656a77 RDX: ffff888019313b80 RSI: ffffffff84656c97 RDI: 0000000000000001 RBP: ffffc9000337fb30 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: fffffffffffffdef R14: 0000000000000000 R15: ffff888047da8740 FS: 0000555555c9a380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056518e8170a8 CR3: 0000000048309000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> exfat_direct_IO+0x320/0x510 fs/exfat/inode.c:538 generic_file_read_iter+0x1dd/0x450 mm/filemap.c:2759 call_read_iter include/linux/fs.h:2079 [inline] aio_read+0x318/0x4d0 fs/aio.c:1597 __io_submit_one fs/aio.c:1998 [inline] io_submit_one+0x1480/0x1de0 fs/aio.c:2047 __do_sys_io_submit fs/aio.c:2106 [inline] __se_sys_io_submit fs/aio.c:2076 [inline] __x64_sys_io_submit+0x1c3/0x350 fs/aio.c:2076 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f6eb9491c79 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdb9c8bf78 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007ffdb9c8bf80 RCX: 00007f6eb9491c79 RDX: 0000000020000540 RSI: 0000000000003f0a RDI: 00007f6eb944a000 RBP: 00007f6eb9506610 R08: 65732f636f72702f R09: 65732f636f72702f R10: 65732f636f72702f R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffdb9c8c1b8 R14: 0000000000000001 R15: 0000000000000001 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:iov_iter_revert lib/iov_iter.c:582 [inline] RIP: 0010:iov_iter_revert+0x328/0x360 lib/iov_iter.c:567 Code: 8e 94 78 fd e9 8f fd ff ff e8 e4 94 78 fd e9 de fe ff ff e8 ba 94 78 fd eb a2 e8 d3 94 78 fd e9 12 fe ff ff e8 b9 8c 21 fd 90 <0f> 0b e8 c1 94 78 fd e9 23 fe ff ff e8 b7 94 78 fd e9 64 fe ff ff RSP: 0018:ffffc9000337f9e0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000001bca00 RCX: ffffffff84656a77 RDX: ffff888019313b80 RSI: ffffffff84656c97 RDI: 0000000000000001 RBP: ffffc9000337fb30 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: fffffffffffffdef R14: 0000000000000000 R15: ffff888047da8740 FS: 0000555555c9a380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6eb944a000 CR3: 0000000048309000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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
