program syz.2.1452 is using a deprecated SCSI ioctl, please convert it to SG_IO Oops: general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f] CPU: 1 UID: 0 PID: 10916 Comm: syz.2.1452 Not tainted 6.15.0-syzkaller-08486-gf66bc387efbe #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:is_anon_ns fs/mount.h:165 [inline] RIP: 0010:do_move_mount+0x27d/0xb10 fs/namespace.c:3726 Code: e8 18 bb 81 ff 41 be ea ff ff ff 49 bd 00 00 00 00 00 fc ff df 48 8b 6c 24 18 4c 8b 7c 24 08 48 8d 5d 48 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 34 e6 e4 ff 48 8b 1b 31 ff 48 89 RSP: 0018:ffffc9000b4afd30 EFLAGS: 00010206 RAX: 0000000000000009 RBX: 0000000000000048 RCX: 0000000000080000 RDX: ffffc9000c372000 RSI: 0000000000000095 RDI: 0000000000000096 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff823cf289 R10: dffffc0000000000 R11: ffffed1029180047 R12: 000000000000003f R13: dffffc0000000000 R14: 00000000ffffffea R15: ffff88801dabeb80 FS: 0000000000000000(0000) GS:ffff888125d63000(0063) knlGS:00000000f504eb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f7163820 CR3: 0000000033908000 CR4: 00000000003526f0 DR0: 0000040000000000 DR1: 000000000000064f DR2: 0000000000000006 DR3: 0000000000000006 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __do_sys_move_mount fs/namespace.c:4686 [inline] __se_sys_move_mount+0x49f/0x590 fs/namespace.c:4617 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xb6/0x2b0 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf705e539 Code: 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f504e55c EFLAGS: 00000206 ORIG_RAX: 00000000000001ad RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000000000000 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000256 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:is_anon_ns fs/mount.h:165 [inline] RIP: 0010:do_move_mount+0x27d/0xb10 fs/namespace.c:3726 Code: e8 18 bb 81 ff 41 be ea ff ff ff 49 bd 00 00 00 00 00 fc ff df 48 8b 6c 24 18 4c 8b 7c 24 08 48 8d 5d 48 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 34 e6 e4 ff 48 8b 1b 31 ff 48 89 RSP: 0018:ffffc9000b4afd30 EFLAGS: 00010206 RAX: 0000000000000009 RBX: 0000000000000048 RCX: 0000000000080000 RDX: ffffc9000c372000 RSI: 0000000000000095 RDI: 0000000000000096 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff823cf289 R10: dffffc0000000000 R11: ffffed1029180047 R12: 000000000000003f R13: dffffc0000000000 R14: 00000000ffffffea R15: ffff88801dabeb80 FS: 0000000000000000(0000) GS:ffff888125d63000(0063) knlGS:00000000f504eb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f7163820 CR3: 0000000033908000 CR4: 00000000003526f0 DR0: 0000040000000000 DR1: 000000000000064f DR2: 0000000000000006 DR3: 0000000000000006 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 18 bb 81 ff call 0xff81bb1d 5: 41 be ea ff ff ff mov $0xffffffea,%r14d b: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 12: fc ff df 15: 48 8b 6c 24 18 mov 0x18(%rsp),%rbp 1a: 4c 8b 7c 24 08 mov 0x8(%rsp),%r15 1f: 48 8d 5d 48 lea 0x48(%rbp),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 34 e6 e4 ff call 0xffe4e66d 39: 48 8b 1b mov (%rbx),%rbx 3c: 31 ff xor %edi,%edi 3e: 48 rex.W 3f: 89 .byte 0x89