Hello, syzbot found the following issue on: HEAD commit: b253435746d9 Merge tag 'xtensa-20220416' of https://github.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11588ba2f00000 kernel config: https://syzkaller.appspot.com/x/.config?x=4cdc9619f45633df dashboard link: https://syzkaller.appspot.com/bug?extid=c95173762127ad76a824 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=175b13c0f00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1502f854f00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c95173762127ad76a824@xxxxxxxxxxxxxxxxxxxxxxxxx loop0: detected capacity change from 0 to 264192 ntfs3: Unknown parameter 'iochvrset' general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 1 PID: 3589 Comm: syz-executor210 Not tainted 5.18.0-rc3-syzkaller-00016-gb253435746d9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ntfs_update_mftmirr+0x51/0x6a0 fs/ntfs3/fsntfs.c:834 Code: 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 47 d4 13 ff 49 8b 06 48 89 44 24 18 48 8d 68 18 48 89 e8 48 c1 e8 03 48 89 44 24 40 <80> 3c 18 00 74 08 48 89 ef e8 21 d4 13 ff 48 89 6c 24 10 48 8b 45 RSP: 0018:ffffc90002dffc70 EFLAGS: 00010206 RAX: 0000000000000003 RBX: dffffc0000000000 RCX: ffff888025543a00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807e250000 RBP: 0000000000000018 R08: dffffc0000000000 R09: ffff88807e250290 R10: ffffed100fc4a055 R11: 1ffff1100fc4a052 R12: ffff888079a4dc00 R13: dffffc0000000000 R14: ffff88807e250000 R15: dffffc0000000000 FS: 0000555556d79300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffc47539c0 CR3: 000000001cabf000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> put_ntfs+0x1ed/0x2a0 fs/ntfs3/super.c:463 ntfs_fs_free+0x6a/0xe0 fs/ntfs3/super.c:1363 put_fs_context+0x119/0x7a0 fs/fs_context.c:469 do_new_mount+0x2b4/0xad0 fs/namespace.c:3044 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fc64612025a Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd5eefed68 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffd5eefedc0 RCX: 00007fc64612025a RDX: 0000000020001480 RSI: 00000000200014c0 RDI: 00007ffd5eefed80 RBP: 00007ffd5eefed80 R08: 00007ffd5eefedc0 R09: 0000000800000015 R10: 0000000000000008 R11: 0000000000000286 R12: 0000000000000008 R13: 0000000020002a00 R14: 0000000000000004 R15: 0000000000000003 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ntfs_update_mftmirr+0x51/0x6a0 fs/ntfs3/fsntfs.c:834 Code: 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 47 d4 13 ff 49 8b 06 48 89 44 24 18 48 8d 68 18 48 89 e8 48 c1 e8 03 48 89 44 24 40 <80> 3c 18 00 74 08 48 89 ef e8 21 d4 13 ff 48 89 6c 24 10 48 8b 45 RSP: 0018:ffffc90002dffc70 EFLAGS: 00010206 RAX: 0000000000000003 RBX: dffffc0000000000 RCX: ffff888025543a00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807e250000 RBP: 0000000000000018 R08: dffffc0000000000 R09: ffff88807e250290 R10: ffffed100fc4a055 R11: 1ffff1100fc4a052 R12: ffff888079a4dc00 R13: dffffc0000000000 R14: ffff88807e250000 R15: dffffc0000000000 FS: 0000555556d79300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffc47539c0 CR3: 000000001cabf000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 c1 e8 03 shr $0x3,%rax 4: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 8: 74 08 je 0x12 a: 4c 89 f7 mov %r14,%rdi d: e8 47 d4 13 ff callq 0xff13d459 12: 49 8b 06 mov (%r14),%rax 15: 48 89 44 24 18 mov %rax,0x18(%rsp) 1a: 48 8d 68 18 lea 0x18(%rax),%rbp 1e: 48 89 e8 mov %rbp,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 48 89 44 24 40 mov %rax,0x40(%rsp) * 2a: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 ef mov %rbp,%rdi 33: e8 21 d4 13 ff callq 0xff13d459 38: 48 89 6c 24 10 mov %rbp,0x10(%rsp) 3d: 48 rex.W 3e: 8b .byte 0x8b 3f: 45 rex.RB --- 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
