BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 17bcf067 P4D 17bcf067 PUD 75158067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 3543 Comm: syz-executor402 Not tainted 6.1.69-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc9000398fcc8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffea0001c78d40 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffffea0001c78d40 RDI: ffff88807145ebb8 RBP: 0000000000000000 R08: ffffffff81bab466 R09: fffff9400038f1a9 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000001000 R13: 0000000000000000 R14: 0000000000001000 R15: ffffffffffffffff FS: 00007f0dc3cd46c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000029b95000 CR4: 00000000003506e0 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 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0dc3d37029 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0dc3cd4218 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f0dc3ddd618 RCX: 00007f0dc3d37029 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f0dc3ddd610 R08: 00007ffedbbfdb47 R09: 0000000000000000 R10: 0000000000008000 R11: 0000000000000246 R12: 00007f0dc3ddd61c R13: 00007f0dc3daa488 R14: 00007f0dc3d8b060 R15: 0031656c69662f2e Modules linked in: CR2: 0000000000000000 ---[ end trace 0000000000000000 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc9000398fcc8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffea0001c78d40 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffffea0001c78d40 RDI: ffff88807145ebb8 RBP: 0000000000000000 R08: ffffffff81bab466 R09: fffff9400038f1a9 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000001000 R13: 0000000000000000 R14: 0000000000001000 R15: ffffffffffffffff FS: 00007f0dc3cd46c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000029b95000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400