R13: 00000000200007c0 R14: 00007f34b97b1fe0 R15: 0000000000000000 general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 1 PID: 16075 Comm: syz-executor.2 Not tainted 6.3.0-rc6-syzkaller-00046-gde4664485abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 RIP: 0010:is_rec_inuse fs/ntfs3/ntfs.h:312 [inline] RIP: 0010:ni_write_inode+0x19e/0x1250 fs/ntfs3/frecord.c:3261 Code: c1 e8 03 49 bf 00 00 00 00 00 fc ff df 42 80 3c 38 00 74 08 48 89 df e8 20 71 17 ff 48 8b 1b 48 83 c3 16 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 2f 0e 00 00 48 8b 44 24 08 48 05 b0 fd RSP: 0018:ffffc9000371f9a0 EFLAGS: 00010203 RAX: 0000000000000002 RBX: 0000000000000016 RCX: 1ffff920006e3eb0 RDX: ffff888029bf57c0 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000371fac8 R08: ffffffff82c8b844 R09: fffffbfff205b65c R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100ef1200a R13: ffff888077890050 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f34b97b2700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555558eb888 CR3: 000000007a1f5000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ntfs_evict_inode+0x67/0xb0 fs/ntfs3/inode.c:1774 evict+0x2a4/0x620 fs/inode.c:665 ntfs_new_inode+0x87/0x100 fs/ntfs3/fsntfs.c:1686 ntfs_create_inode+0x569/0x3830 fs/ntfs3/inode.c:1300 ntfs_mkdir+0x42/0x60 fs/ntfs3/namei.c:206 vfs_mkdir+0x29d/0x450 fs/namei.c:4038 do_mkdirat+0x264/0x520 fs/namei.c:4061 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4074 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: 0033:0x7f34b8a8b187 Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 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:00007f34b97b1f88 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f34b8a8b187 RDX: 00000000000001ff RSI: 00000000200007c0 RDI: 00000000ffffff9c RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000200007c0 R14: 00007f34b97b1fe0 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:is_rec_inuse fs/ntfs3/ntfs.h:312 [inline] RIP: 0010:ni_write_inode+0x19e/0x1250 fs/ntfs3/frecord.c:3261 Code: c1 e8 03 49 bf 00 00 00 00 00 fc ff df 42 80 3c 38 00 74 08 48 89 df e8 20 71 17 ff 48 8b 1b 48 83 c3 16 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 2f 0e 00 00 48 8b 44 24 08 48 05 b0 fd RSP: 0018:ffffc9000371f9a0 EFLAGS: 00010203 RAX: 0000000000000002 RBX: 0000000000000016 RCX: 1ffff920006e3eb0 RDX: ffff888029bf57c0 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000371fac8 R08: ffffffff82c8b844 R09: fffffbfff205b65c R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100ef1200a R13: ffff888077890050 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f34b97b2700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff0ea458000 CR3: 000000007a1f5000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c1 e8 03 shr $0x3,%eax 3: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 a: fc ff df d: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 12: 74 08 je 0x1c 14: 48 89 df mov %rbx,%rdi 17: e8 20 71 17 ff callq 0xff17713c 1c: 48 8b 1b mov (%rbx),%rbx 1f: 48 83 c3 16 add $0x16,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 2f 0e 00 00 jne 0xe66 37: 48 8b 44 24 08 mov 0x8(%rsp),%rax 3c: 48 rex.W 3d: 05 .byte 0x5 3e: b0 fd mov $0xfd,%al