loop0: detected capacity change from 0 to 4096 ntfs3: loop0: Different NTFS' sector size (2048) and media sector size (512) ntfs3: loop0: 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 23229067 P4D 23229067 PUD 1ec19067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4248 Comm: syz-executor.0 Not tainted 5.15.156-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 RIP 0xffffffffffffffd6. RSP: 0018:ffffc90003ae7cc8 EFLAGS: 00010282 RAX: 1ffffffff1576b57 RBX: ffffea00016f3e80 RCX: ffffffff8abb5ab8 RDX: ffffc90002ec9000 RSI: 0000000000003dae RDI: ffffea00016f3e80 RBP: dffffc0000000000 R08: ffffffff81ab4919 R09: fffff940002de7d1 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffffea00016f3e80 R14: 0000000000000000 R15: ffffffffffffffff FS: 00007fb3657f86c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000005d0d3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ntfs_sparse_cluster+0x76e/0xbb0 fs/ntfs3/file.c:337 ntfs_fallocate+0x7da/0xee0 fs/ntfs3/file.c:706 vfs_fallocate+0x54a/0x6b0 fs/open.c:308 ksys_fallocate fs/open.c:331 [inline] __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fb367285ea9 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:00007fb3657f80c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fb3673b3f80 RCX: 00007fb367285ea9 RDX: 0000000000000000 RSI: 0000000100000001 RDI: 0000000000000004 RBP: 00007fb3672d24a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb3673b3f80 R15: 00007ffdf7fa3e88 Modules linked in: CR2: 0000000000000000 ---[ end trace 0fb13b303169dc8b ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc90003ae7cc8 EFLAGS: 00010282 RAX: 1ffffffff1576b57 RBX: ffffea00016f3e80 RCX: ffffffff8abb5ab8 RDX: ffffc90002ec9000 RSI: 0000000000003dae RDI: ffffea00016f3e80 RBP: dffffc0000000000 R08: ffffffff81ab4919 R09: fffff940002de7d1 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffffea00016f3e80 R14: 0000000000000000 R15: ffffffffffffffff FS: 00007fb3657f86c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000005d0d3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400