loop2: detected capacity change from 0 to 4096 ntfs3: loop2: Different NTFS' sector size (2048) and media sector size (512) ntfs3: loop2: 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 7c462067 P4D 7c462067 PUD 1ed89067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 3674 Comm: syz-executor.2 Not tainted 5.15.161-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc9000117f888 EFLAGS: 00010282 RAX: 1ffffffff1576bc7 RBX: ffffea000175e580 RCX: ffffffff8abb5e38 RDX: ffffc900055b2000 RSI: 00000000000014e2 RDI: ffffea000175e580 RBP: dffffc0000000000 R08: ffffffff81ab50a9 R09: fffff940002ebcb1 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffffffffffff FS: 00007f374de356c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000005eb19000 CR4: 00000000003506e0 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 do_vfs_ioctl+0x2317/0x2b70 fs/ioctl.c:853 __do_sys_ioctl fs/ioctl.c:872 [inline] __se_sys_ioctl+0x81/0x160 fs/ioctl.c:860 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: 0033:0x7f374f2bbf29 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:00007f374de350c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f374f3f2f80 RCX: 00007f374f2bbf29 RDX: 0000000020000240 RSI: 0000000040305828 RDI: 0000000000000005 RBP: 00007f374f32b074 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f374f3f2f80 R15: 00007ffdba939268 Modules linked in: CR2: 0000000000000000 ---[ end trace 6d08f3cf6092d096 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc9000117f888 EFLAGS: 00010282 RAX: 1ffffffff1576bc7 RBX: ffffea000175e580 RCX: ffffffff8abb5e38 RDX: ffffc900055b2000 RSI: 00000000000014e2 RDI: ffffea000175e580 RBP: dffffc0000000000 R08: ffffffff81ab50a9 R09: fffff940002ebcb1 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffffffffffff FS: 00007f374de356c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000005eb19000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400