general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] CPU: 1 PID: 4391 Comm: syz.2.130 Not tainted 5.15.165-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:d_backing_inode include/linux/dcache.h:553 [inline] RIP: 0010:security_inode_getattr+0x42/0x120 security/security.c:1346 Code: bc fd 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 3c aa 06 fe 48 8b 2b 48 83 c5 68 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 1f aa 06 fe 48 8b 6d 00 48 83 c5 RSP: 0018:ffffc900032d79a0 EFLAGS: 00010202 RAX: 000000000000000d RBX: ffffc900032d7aa8 RCX: 0000000000040000 RDX: ffffc9000ebec000 RSI: 00000000000008f8 RDI: 00000000000008f9 RBP: 0000000000000068 R08: dffffc0000000000 R09: ffffc900032d7aa0 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffc900032d7b90 R14: 0000000000000000 R15: ffffc900032d7aa0 FS: 00007ff560f496c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33015ff8 CR3: 000000005bf4c000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_getattr+0x26/0x360 fs/stat.c:157 ovl_getattr+0x335/0xed0 fs/overlayfs/inode.c:245 vfs_statx+0x18f/0x3b0 fs/stat.c:225 vfs_fstatat fs/stat.c:243 [inline] vfs_lstat include/linux/fs.h:3387 [inline] __do_sys_newlstat fs/stat.c:397 [inline] __se_sys_newlstat fs/stat.c:391 [inline] __x64_sys_newlstat+0xe5/0x160 fs/stat.c:391 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7ff562aedef9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff560f49038 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 00007ff562c8a058 RCX: 00007ff562aedef9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007ff562b5b93e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff562c8a058 R15: 00007ffff684c168 Modules linked in: ---[ end trace e103a3b61b0a6106 ]--- RIP: 0010:d_backing_inode include/linux/dcache.h:553 [inline] RIP: 0010:security_inode_getattr+0x42/0x120 security/security.c:1346 Code: bc fd 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 3c aa 06 fe 48 8b 2b 48 83 c5 68 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 1f aa 06 fe 48 8b 6d 00 48 83 c5 RSP: 0018:ffffc900032d79a0 EFLAGS: 00010202 RAX: 000000000000000d RBX: ffffc900032d7aa8 RCX: 0000000000040000 RDX: ffffc9000ebec000 RSI: 00000000000008f8 RDI: 00000000000008f9 RBP: 0000000000000068 R08: dffffc0000000000 R09: ffffc900032d7aa0 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffc900032d7b90 R14: 0000000000000000 R15: ffffc900032d7aa0 FS: 00007ff560f496c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7c58a0d178 CR3: 000000005bf4c000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: bc fd 49 8d 5f mov $0x5f8d49fd,%esp 5: 08 48 89 or %cl,-0x77(%rax) 8: d8 48 c1 fmuls -0x3f(%rax) b: e8 03 42 80 3c call 0x3c804213 10: 20 00 and %al,(%rax) 12: 74 08 je 0x1c 14: 48 89 df mov %rbx,%rdi 17: e8 3c aa 06 fe call 0xfe06aa58 1c: 48 8b 2b mov (%rbx),%rbp 1f: 48 83 c5 68 add $0x68,%rbp 23: 48 89 e8 mov %rbp,%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: 48 89 ef mov %rbp,%rdi 34: e8 1f aa 06 fe call 0xfe06aa58 39: 48 8b 6d 00 mov 0x0(%rbp),%rbp 3d: 48 rex.W 3e: 83 .byte 0x83 3f: c5 .byte 0xc5