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: 19681 Comm: syz-executor.1 Not tainted 5.10.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:d_backing_inode include/linux/dcache.h:549 [inline] RIP: 0010:security_inode_getattr+0x46/0x140 security/security.c:1277 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 04 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 08 48 8d 7b 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d7 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffffc90002187640 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000ac2a000 RDX: 000000000000000d RSI: ffffffff837bca3e RDI: 0000000000000068 RBP: ffffc90002187810 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880345009d0 R13: ffffc90002187810 R14: 00000000000007ff R15: 0000000000000000 FS: 00007fb0e5e79700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000768000 CR3: 00000000619c6000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_getattr+0x22/0x60 fs/stat.c:121 ovl_copy_up_one+0x133/0x1d40 fs/overlayfs/copy_up.c:879 ovl_copy_up_flags+0x14b/0x1d0 fs/overlayfs/copy_up.c:960 ovl_maybe_copy_up+0x140/0x190 fs/overlayfs/copy_up.c:992 ovl_open+0xba/0x270 fs/overlayfs/file.c:154 do_dentry_open+0x4b9/0x11b0 fs/open.c:817 do_open fs/namei.c:3252 [inline] path_openat+0x1b9a/0x2730 fs/namei.c:3369 do_filp_open+0x17e/0x3c0 fs/namei.c:3396 file_open_name+0x290/0x400 fs/open.c:1113 acct_on+0x78/0x770 kernel/acct.c:207 __do_sys_acct kernel/acct.c:286 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xab/0x1f0 kernel/acct.c:273 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45deb9 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb0e5e78c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000700 RCX: 000000000045deb9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 000000000118bff8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bfd4 R13: 00007ffc7bf27f4f R14: 00007fb0e5e799c0 R15: 000000000118bfd4 Modules linked in: ---[ end trace 003da7eba199c2ff ]--- RIP: 0010:d_backing_inode include/linux/dcache.h:549 [inline] RIP: 0010:security_inode_getattr+0x46/0x140 security/security.c:1277 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 04 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 08 48 8d 7b 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d7 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffffc90002187640 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000ac2a000 RDX: 000000000000000d RSI: ffffffff837bca3e RDI: 0000000000000068 RBP: ffffc90002187810 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880345009d0 R13: ffffc90002187810 R14: 00000000000007ff R15: 0000000000000000 FS: 00007fb0e5e79700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f69ee714000 CR3: 00000000619c6000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400