SQUASHFS: Got metadata 0, start block 1256, refcount 1, error 0 SQUASHFS: Entered squashfs_read_metadata [6ec:0] SQUASHFS: Got metadata 1, start block 1772, refcount 1, error 0 SQUASHFS: Entered squashfs_read_metadata [6ec:0] SQUASHFS: Got metadata 1, start block 1772, refcount 1, error 0 SQUASHFS: Entered squashfs_read_metadata [4e8:87] SQUASHFS: Got metadata 0, start block 1256, refcount 1, error 0 SQUASHFS error: Unable to read inode 0x87 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 1 UID: 0 PID: 11186 Comm: syz.0.1174 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 RIP: 0010:security_d_instantiate+0x2f/0x1d0 security/security.c:3781 Code: 41 57 41 56 53 48 89 f3 49 89 fe e8 bb 2c 20 fd 48 85 db 74 42 4c 8d 7b 04 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 9d 00 00 00 41 8b 2f 89 ee 81 e6 00 02 00 RSP: 0018:ffffc90003de7898 EFLAGS: 00010203 RAX: 0000000000000004 RBX: 0000000000000020 RCX: dffffc0000000000 RDX: ffffc90004649000 RSI: 000000000000363c RDI: 000000000000363d RBP: ffffc90003de7ae8 R08: ffffffff91bec8bf R09: 1ffffffff237d917 R10: dffffc0000000000 R11: fffffbfff237d918 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888054959ba0 R15: 0000000000000024 FS: 00007f07a2ade6c0(0000) GS:ffff8881234cd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa2abc97000 CR3: 00000000489c4000 CR4: 00000000003526f0 DR0: 0000000000000008 DR1: 0000000000000007 DR2: 0000000000000004 DR3: 0000000000000008 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: d_splice_alias_ops+0x72/0x440 fs/dcache.c:3458 squashfs_lookup+0xc5e/0x14e0 fs/squashfs/namei.c:273 finish_lookup fs/namei.c:1934 [inline] __lookup_slow+0x24b/0x360 fs/namei.c:1970 lookup_slow+0x59/0x80 fs/namei.c:1980 walk_component fs/namei.c:2325 [inline] lookup_last fs/namei.c:2839 [inline] path_lookupat+0x3f5/0x8c0 fs/namei.c:2864 filename_lookup+0x265/0x5d0 fs/namei.c:2893 filename_listxattr fs/xattr.c:971 [inline] path_listxattrat+0x13b/0x3f0 fs/xattr.c:1001 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x171/0x540 arch/x86/entry/syscall_64.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x00007f07a1ba94d9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f07a2ade028 EFLAGS: 00000246 ORIG_RAX: 00000000000000c3 RAX: ffffffffffffffda RBX: 00007f07a1e25fa0 RCX: 00007f07a1ba94d9 RDX: 00000000000000e3 RSI: 0000200000000840 RDI: 0000200000000800 RBP: 00007f07a1c3804e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f07a1e26038 R14: 00007f07a1e25fa0 R15: 00007ffea45496c8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:security_d_instantiate+0x2f/0x1d0 security/security.c:3781 Code: 41 57 41 56 53 48 89 f3 49 89 fe e8 bb 2c 20 fd 48 85 db 74 42 4c 8d 7b 04 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 9d 00 00 00 41 8b 2f 89 ee 81 e6 00 02 00 RSP: 0018:ffffc90003de7898 EFLAGS: 00010203 RAX: 0000000000000004 RBX: 0000000000000020 RCX: dffffc0000000000 RDX: ffffc90004649000 RSI: 000000000000363c RDI: 000000000000363d RBP: ffffc90003de7ae8 R08: ffffffff91bec8bf R09: 1ffffffff237d917 R10: dffffc0000000000 R11: fffffbfff237d918 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888054959ba0 R15: 0000000000000024 FS: 00007f07a2ade6c0(0000) GS:ffff8881234cd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9bff81b000 CR3: 00000000489c4000 CR4: 00000000003526f0 DR0: 0000000000000008 DR1: 0000000000000007 DR2: 0000000000000004 DR3: 0000000000000008 DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 41 57 push %r15 2: 41 56 push %r14 4: 53 push %rbx 5: 48 89 f3 mov %rsi,%rbx 8: 49 89 fe mov %rdi,%r14 b: e8 bb 2c 20 fd call 0xfd202ccb 10: 48 85 db test %rbx,%rbx 13: 74 42 je 0x57 15: 4c 8d 7b 04 lea 0x4(%rbx),%r15 19: 4c 89 f8 mov %r15,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 9d 00 00 00 jne 0xd3 36: 41 8b 2f mov (%r15),%ebp 39: 89 ee mov %ebp,%esi 3b: 81 .byte 0x81 3c: e6 00 out %al,$0x0 3e: 02 00 add (%rax),%al