RSP: 002b:00007ffed3921068 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f0996ccaf79 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 RBP: 00007f0996d656a0 R08: 00007ffed3920e06 R09: 0000000000000140 R10: 000000000000c049 R11: 0000000000000246 R12: 0000000000000004 R13: 00007ffed39210a0 R14: 0000000000000003 R15: 000000000000000c 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: 5026 Comm: syz-executor114 Not tainted 6.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:_compound_head include/linux/page-flags.h:247 [inline] RIP: 0010:unlock_page+0x26/0x130 mm/folio-compat.c:21 Code: 00 00 00 00 f3 0f 1e fa 41 57 41 56 53 49 89 fe 49 bf 00 00 00 00 00 fc ff df e8 c5 ab ca ff 49 8d 5e 08 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 ab 1d 25 00 48 8b 1b 48 89 de 48 RSP: 0018:ffffc90003baf400 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888079f58000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff82d370d4 R09: 1ffffd4000397eb0 R10: dffffc0000000000 R11: fffff94000397eb1 R12: ffff888018f00d08 R13: 00000000fffffff4 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000555556cdd380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f90e3623ed8 CR3: 00000000741c7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ni_readpage_cmpr+0x42a/0xa50 fs/ntfs3/frecord.c:2153 ntfs_read_folio+0x19e/0x210 fs/ntfs3/inode.c:718 filemap_read_folio+0x19c/0x770 mm/filemap.c:2382 filemap_create_folio mm/filemap.c:2510 [inline] filemap_get_pages+0xdf7/0x2080 mm/filemap.c:2563 filemap_splice_read+0x4ce/0xcd0 mm/filemap.c:2919 splice_direct_to_actor+0x2c4/0x9e0 fs/splice.c:1069 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1194 do_sendfile+0x623/0x1070 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308 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: 0033:0x7f0996ccaf79 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 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:00007ffed3921068 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f0996ccaf79 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 RBP: 00007f0996d656a0 R08: 00007ffed3920e06 R09: 0000000000000140 R10: 000000000000c049 R11: 0000000000000246 R12: 0000000000000004 R13: 00007ffed39210a0 R14: 0000000000000003 R15: 000000000000000c Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:_compound_head include/linux/page-flags.h:247 [inline] RIP: 0010:unlock_page+0x26/0x130 mm/folio-compat.c:21 Code: 00 00 00 00 f3 0f 1e fa 41 57 41 56 53 49 89 fe 49 bf 00 00 00 00 00 fc ff df e8 c5 ab ca ff 49 8d 5e 08 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 ab 1d 25 00 48 8b 1b 48 89 de 48 RSP: 0018:ffffc90003baf400 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888079f58000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff82d370d4 R09: 1ffffd4000397eb0 R10: dffffc0000000000 R11: fffff94000397eb1 R12: ffff888018f00d08 R13: 00000000fffffff4 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000555556cdd380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f90e3623ed8 CR3: 00000000741c7000 CR4: 00000000003506f0 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: f3 0f 1e fa endbr64 8: 41 57 push %r15 a: 41 56 push %r14 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 c5 ab ca ff call 0xffcaabe4 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 ab 1d 25 00 call 0x251de4 39: 48 8b 1b mov (%rbx),%rbx 3c: 48 89 de mov %rbx,%rsi 3f: 48 rex.W