R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff98a4290f R14: 00007f1a3a7fe300 R15: 0000000000022000 general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 16269 Comm: syz-executor.0 Not tainted 6.3.0-rc3-syzkaller-00029-g9fd6ba5420ba #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:_compound_head include/linux/page-flags.h:251 [inline] RIP: 0010:unlock_page+0x28/0x140 mm/folio-compat.c:21 Code: 40 00 f3 0f 1e fa 41 57 41 56 41 54 53 49 89 fe 49 bf 00 00 00 00 00 fc ff df e8 83 b8 cd ff 49 8d 5e 08 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 f9 69 23 00 48 8b 1b 48 89 de 48 RSP: 0018:ffffc900184d7658 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000040000 RDX: ffffc90004022000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: 0000000000000000 R08: ffffffff82c82824 R09: fffff940001c6b59 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801ee87700 R13: 00000000fffffff4 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f1a3a7fe700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f17ed432000 CR3: 000000002770e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ni_readpage_cmpr+0x42a/0xa70 fs/ntfs3/frecord.c:2149 ntfs_read_folio+0x19e/0x210 fs/ntfs3/inode.c:703 filemap_read_folio+0x19d/0x7a0 mm/filemap.c:2424 filemap_update_page mm/filemap.c:2508 [inline] filemap_get_pages+0x15a5/0x20c0 mm/filemap.c:2622 filemap_read+0x45a/0x1170 mm/filemap.c:2693 call_read_iter include/linux/fs.h:1845 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x7e2/0xbe0 fs/read_write.c:470 ksys_read+0x1a0/0x2c0 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1a3bc8c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1a3a7fe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f1a3bdabf80 RCX: 00007f1a3bc8c0f9 RDX: 000000000000005b RSI: 0000000020000080 RDI: 0000000000000004 RBP: 00007f1a3a7fe1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff98a4290f R14: 00007f1a3a7fe300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:_compound_head include/linux/page-flags.h:251 [inline] RIP: 0010:unlock_page+0x28/0x140 mm/folio-compat.c:21 Code: 40 00 f3 0f 1e fa 41 57 41 56 41 54 53 49 89 fe 49 bf 00 00 00 00 00 fc ff df e8 83 b8 cd ff 49 8d 5e 08 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 f9 69 23 00 48 8b 1b 48 89 de 48 RSP: 0018:ffffc900184d7658 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000040000 RDX: ffffc90004022000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: 0000000000000000 R08: ffffffff82c82824 R09: fffff940001c6b59 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801ee87700 R13: 00000000fffffff4 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f1a3a7fe700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4b9b52f000 CR3: 000000002770e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 40 00 f3 add %sil,%bl 3: 0f 1e fa nop %edx 6: 41 57 push %r15 8: 41 56 push %r14 a: 41 54 push %r12 c: 53 push %rbx d: 49 89 fe mov %rdi,%r14 10: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 17: fc ff df 1a: e8 83 b8 cd ff callq 0xffcdb8a2 1f: 49 8d 5e 08 lea 0x8(%r14),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 f9 69 23 00 callq 0x236a32 39: 48 8b 1b mov (%rbx),%rbx 3c: 48 89 de mov %rbx,%rsi 3f: 48 rex.W