loop1: detected capacity change from 0 to 4096 ntfs3: loop1: Different NTFS' sector size (2048) and media sector size (512) ntfs3: loop1: Mark volume as dirty due to NTFS errors BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 239ed067 P4D 239ed067 PUD 5f264067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 0 PID: 6034 Comm: syz-executor.1 Not tainted 6.1.88-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc9000327f888 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffea00013684c0 RCX: dffffc0000000000 RDX: ffffc9000cd82000 RSI: ffffea00013684c0 RDI: ffff8880561621f8 RBP: 0000000000000000 R08: ffffffff81babb06 R09: fffff9400026d099 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000001000 R13: 0000000000000000 R14: 0000000000001000 R15: ffffffffffffffff FS: 00007f1bff6846c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000006473f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ntfs_sparse_cluster+0x718/0xa20 fs/ntfs3/file.c:335 ntfs_fallocate+0xa70/0x1020 fs/ntfs3/file.c:727 vfs_fallocate+0x547/0x6b0 fs/open.c:323 do_vfs_ioctl+0x222c/0x2a90 fs/ioctl.c:849 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl+0x81/0x160 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f1bfe87dea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1bff6840c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f1bfe9abf80 RCX: 00007f1bfe87dea9 RDX: 0000000020000140 RSI: 0000000040305828 RDI: 0000000000000004 RBP: 00007f1bfe8ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1bfe9abf80 R15: 00007fffa04df2a8 Modules linked in: CR2: 0000000000000000 ---[ end trace 0000000000000000 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc9000327f888 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffea00013684c0 RCX: dffffc0000000000 RDX: ffffc9000cd82000 RSI: ffffea00013684c0 RDI: ffff8880561621f8 RBP: 0000000000000000 R08: ffffffff81babb06 R09: fffff9400026d099 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000001000 R13: 0000000000000000 R14: 0000000000001000 R15: ffffffffffffffff FS: 00007f1bff6846c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000006473f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400