ntfs3: loop2: ino=22, "pids.current" mmap(write) compressed not supported BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 800000007c4a8067 P4D 800000007c4a8067 PUD 6242f067 PMD 0 Oops: Oops: 0010 [#1] PREEMPT SMP KASAN PTI CPU: 1 PID: 7934 Comm: syz-executor.2 Not tainted 6.10.0-rc2-syzkaller-00235-g8a92980606e3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc900036d7618 EFLAGS: 00010286 RAX: 1ffffffff17f914b RBX: 0000000000000000 RCX: dffffc0000000000 RDX: ffffc9000b86e000 RSI: ffffea00016eb0c0 RDI: ffff88805d9a5598 RBP: ffffc900036d7780 R08: ffffffff81cfb95a R09: 1ffffd40002dd618 R10: dffffc0000000000 R11: 0000000000000000 R12: ffff888073cec160 R13: ffff888073cec178 R14: ffffea00016eb0c0 R15: 1ffff920006daed8 FS: 00007f15771fb6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000054e06000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: attr_make_nonresident+0xa49/0xe80 fs/ntfs3/attrib.c:301 attr_set_size_res fs/ntfs3/attrib.c:371 [inline] attr_set_size+0x711/0x4290 fs/ntfs3/attrib.c:432 ntfs_set_size+0x161/0x200 fs/ntfs3/inode.c:851 ntfs_extend+0x16d/0x4a0 fs/ntfs3/file.c:335 ntfs3_setattr+0x2a1/0xb40 fs/ntfs3/file.c:714 notify_change+0xb9d/0xe70 fs/attr.c:497 do_truncate fs/open.c:65 [inline] do_ftruncate+0x46b/0x590 fs/open.c:181 do_sys_ftruncate fs/open.c:199 [inline] __do_sys_ftruncate fs/open.c:207 [inline] __se_sys_ftruncate fs/open.c:205 [inline] __x64_sys_ftruncate+0x95/0xf0 fs/open.c:205 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f157647cf69 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:00007f15771fb0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 00007f15765b3f80 RCX: 00007f157647cf69 RDX: 0000000000000000 RSI: 000000000000c17a RDI: 0000000000000009 RBP: 00007f15764da6fe R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f15765b3f80 R15: 00007fff64f3fc48 Modules linked in: CR2: 0000000000000000 ---[ end trace 0000000000000000 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc900036d7618 EFLAGS: 00010286 RAX: 1ffffffff17f914b RBX: 0000000000000000 RCX: dffffc0000000000 RDX: ffffc9000b86e000 RSI: ffffea00016eb0c0 RDI: ffff88805d9a5598 RBP: ffffc900036d7780 R08: ffffffff81cfb95a R09: 1ffffd40002dd618 R10: dffffc0000000000 R11: 0000000000000000 R12: ffff888073cec160 R13: ffff888073cec178 R14: ffffea00016eb0c0 R15: 1ffff920006daed8 FS: 00007f15771fb6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000054e06000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400