general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] CPU: 0 PID: 5178 Comm: syz.0.142 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:d_backing_inode include/linux/dcache.h:553 [inline] RIP: 0010:security_inode_getattr+0x42/0x120 security/security.c:1346 Code: d7 fd 4c 8d 73 08 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 fc e9 1c fe 4d 8b 36 49 83 c6 68 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 df e9 1c fe 4d 8b 36 49 83 c6 0c RSP: 0018:ffffc9000340f308 EFLAGS: 00010202 RAX: 000000000000000d RBX: ffffc9000340f690 RCX: 0000000000080000 RDX: ffffc9000fac3000 RSI: 0000000000004344 RDI: 0000000000004345 RBP: ffffc9000340f898 R08: ffffc9000340f69f R09: ffffc9000340f690 R10: dffffc0000000000 R11: fffff52000681ed4 R12: dffffc0000000000 R13: ffffc9000340f6a0 R14: 0000000000000068 R15: ffffc9000340f690 FS: 00007f8a34a206c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbd01b11000 CR3: 0000000022602000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_getattr+0x26/0x3a0 fs/stat.c:157 ovl_copy_up_one fs/overlayfs/copy_up.c:965 [inline] ovl_copy_up_flags+0x44e/0x1eb0 fs/overlayfs/copy_up.c:1051 ovl_maybe_copy_up+0x14f/0x180 fs/overlayfs/copy_up.c:1083 ovl_open+0x9b/0x1f0 fs/overlayfs/file.c:149 do_dentry_open+0x7ff/0xf80 fs/open.c:826 do_open fs/namei.c:3616 [inline] path_openat+0x26f5/0x2fa0 fs/namei.c:3750 do_filp_open+0x1e2/0x410 fs/namei.c:3777 file_open_name+0x15f/0x1b0 fs/open.c:1200 acct_on kernel/acct.c:216 [inline] __do_sys_acct kernel/acct.c:309 [inline] __se_sys_acct+0x10f/0x7b0 kernel/acct.c:296 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f8a367e7819 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:00007f8a34a20028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 00007f8a36a61090 RCX: 00007f8a367e7819 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000140 RBP: 00007f8a3687dc91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8a36a61128 R14: 00007f8a36a61090 R15: 00007fff747c6258 Modules linked in: ---[ end trace 0b7d862f04901c8f ]--- RIP: 0010:d_backing_inode include/linux/dcache.h:553 [inline] RIP: 0010:security_inode_getattr+0x42/0x120 security/security.c:1346 Code: d7 fd 4c 8d 73 08 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 fc e9 1c fe 4d 8b 36 49 83 c6 68 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 df e9 1c fe 4d 8b 36 49 83 c6 0c RSP: 0018:ffffc9000340f308 EFLAGS: 00010202 RAX: 000000000000000d RBX: ffffc9000340f690 RCX: 0000000000080000 RDX: ffffc9000fac3000 RSI: 0000000000004344 RDI: 0000000000004345 RBP: ffffc9000340f898 R08: ffffc9000340f69f R09: ffffc9000340f690 R10: dffffc0000000000 R11: fffff52000681ed4 R12: dffffc0000000000 R13: ffffc9000340f6a0 R14: 0000000000000068 R15: ffffc9000340f690 FS: 00007f8a34a206c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3e3a423b08 CR3: 0000000022602000 CR4: 00000000003526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: d7 xlat %ds:(%rbx) 1: fd std 2: 4c 8d 73 08 lea 0x8(%rbx),%r14 6: 4c 89 f0 mov %r14,%rax 9: 48 c1 e8 03 shr $0x3,%rax d: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) 12: 74 08 je 0x1c 14: 4c 89 f7 mov %r14,%rdi 17: e8 fc e9 1c fe call 0xfe1cea18 1c: 4d 8b 36 mov (%r14),%r14 1f: 49 83 c6 68 add $0x68,%r14 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 f7 mov %r14,%rdi 34: e8 df e9 1c fe call 0xfe1cea18 39: 4d 8b 36 mov (%r14),%r14 3c: 49 83 c6 0c add $0xc,%r14