general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 22955 Comm: syz-executor.1 Not tainted 6.6.0-rc2-syzkaller-00386-g3aba70aed91f #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:_compound_head include/linux/page-flags.h:247 [inline] RIP: 0010:unlock_page+0x25/0x130 mm/folio-compat.c:21 Code: 00 00 00 00 90 f3 0f 1e fa 41 54 55 53 48 89 fb e8 40 1f cf ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e4 00 00 00 4c 8b 63 08 31 ff 4c 89 e5 83 e5 01 RSP: 0018:ffffc90005fc7870 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90004421000 RDX: 0000000000000001 RSI: ffffffff81b7a5d0 RDI: 0000000000000008 RBP: 0000000000000001 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000001 R11: 6637303030302052 R12: 0000000000000000 R13: ffff88802c400e08 R14: ffffea000479d340 R15: 0000000000000000 FS: 00007f092a38e6c0(0000) GS:ffff88806b700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f33e7198000 CR3: 00000001102c4000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ni_readpage_cmpr+0x334/0xc80 fs/ntfs3/frecord.c:2153 ntfs_read_folio+0x107/0x1e0 fs/ntfs3/inode.c:718 filemap_read_folio+0xe9/0x2c0 mm/filemap.c:2382 filemap_create_folio mm/filemap.c:2510 [inline] filemap_get_pages+0xdd8/0x1830 mm/filemap.c:2563 filemap_read+0x39b/0xcf0 mm/filemap.c:2652 generic_file_read_iter+0x346/0x450 mm/filemap.c:2831 ntfs_file_read_iter+0x1b8/0x270 fs/ntfs3/file.c:744 call_read_iter include/linux/fs.h:1950 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x4e0/0x930 fs/read_write.c:470 ksys_read+0x12f/0x250 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f092967cae9 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:00007f092a38e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f092979bf80 RCX: 00007f092967cae9 RDX: 0000000000002020 RSI: 0000000020000280 RDI: 0000000000000005 RBP: 00007f092a38e120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 000000000000000b R14: 00007f092979bf80 R15: 00007ffc6b855148 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:_compound_head include/linux/page-flags.h:247 [inline] RIP: 0010:unlock_page+0x25/0x130 mm/folio-compat.c:21 Code: 00 00 00 00 90 f3 0f 1e fa 41 54 55 53 48 89 fb e8 40 1f cf ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e4 00 00 00 4c 8b 63 08 31 ff 4c 89 e5 83 e5 01 RSP: 0018:ffffc90005fc7870 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90004421000 RDX: 0000000000000001 RSI: ffffffff81b7a5d0 RDI: 0000000000000008 RBP: 0000000000000001 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000001 R11: 6637303030302052 R12: 0000000000000000 R13: ffff88802c400e08 R14: ffffea000479d340 R15: 0000000000000000 FS: 00007f092a38e6c0(0000) GS:ffff88806b700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f33e7198000 CR3: 00000001102c4000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: 90 nop 5: f3 0f 1e fa endbr64 9: 41 54 push %r12 b: 55 push %rbp c: 53 push %rbx d: 48 89 fb mov %rdi,%rbx 10: e8 40 1f cf ff call 0xffcf1f55 15: 48 8d 7b 08 lea 0x8(%rbx),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 e4 00 00 00 jne 0x118 34: 4c 8b 63 08 mov 0x8(%rbx),%r12 38: 31 ff xor %edi,%edi 3a: 4c 89 e5 mov %r12,%rbp 3d: 83 e5 01 and $0x1,%ebp