general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 PID: 293 Comm: syz-executor246 Not tainted 5.15.148-syzkaller-00718-g993bed180178 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:d_backing_inode include/linux/dcache.h:562 [inline]
RIP: 0010:security_inode_getattr+0x47/0x130 security/security.c:1347
Code: 38 ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 37 04 7b ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 1a 04 7b ff 48 8b 1b 48 83 c3 0c
RSP: 0018:ffffc9000079eeb0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff8881195abb40
RDX: 0000000000000000 RSI: ffffc9000079f3e0 RDI: ffffc9000079f3d0
RBP: ffffc9000079eed8 R08: dffffc0000000000 R09: ffffc9000079f3d0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000079f3e0
R13: dffffc0000000000 R14: ffffc9000079f3d0 R15: ffffc9000079f3d0
FS: 0000555556ef9480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011ee5e000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
vfs_getattr+0x2a/0x320 fs/stat.c:157
ovl_copy_up_one fs/overlayfs/copy_up.c:961 [inline]
ovl_copy_up_flags+0x629/0x2d30 fs/overlayfs/copy_up.c:1047
ovl_maybe_copy_up+0x15a/0x190 fs/overlayfs/copy_up.c:1079
ovl_open+0xad/0x210 fs/overlayfs/file.c:152
do_dentry_open+0x81c/0xfd0 fs/open.c:828
vfs_open fs/open.c:958 [inline]
dentry_open+0xb8/0x100 fs/open.c:974
file_open+0x2a7/0x650 fs/incfs/vfs.c:1465
do_dentry_open+0x81c/0xfd0 fs/open.c:828
vfs_open+0x73/0x80 fs/open.c:958
do_open fs/namei.c:3614 [inline]
path_openat+0x26f0/0x2f40 fs/namei.c:3748
do_filp_open+0x21c/0x460 fs/namei.c:3775
do_sys_openat2+0x13f/0x830 fs/open.c:1234
do_sys_open fs/open.c:1250 [inline]
__do_sys_openat fs/open.c:1266 [inline]
__se_sys_openat fs/open.c:1261 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1261
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f8853a75019
Code: 48 83 c4 28 c3 e8 67 17 00 00 0f 1f 80 00 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff58abf188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fff58abf190 RCX: 00007f8853a75019
RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007fff58abf198 R08: 00007f8853a420a0 R09: 00007f8853a420a0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff58abf3f8 R14: 0000000000000001 R15: 0000000000000001
</TASK>
Modules linked in:
---[ end trace 63ce3a5a71cfa2a5 ]---
RIP: 0010:d_backing_inode include/linux/dcache.h:562 [inline]
RIP: 0010:security_inode_getattr+0x47/0x130 security/security.c:1347
Code: 38 ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 37 04 7b ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 1a 04 7b ff 48 8b 1b 48 83 c3 0c
RSP: 0018:ffffc9000079eeb0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff8881195abb40
RDX: 0000000000000000 RSI: ffffc9000079f3e0 RDI: ffffc9000079f3d0
RBP: ffffc9000079eed8 R08: dffffc0000000000 R09: ffffc9000079f3d0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000079f3e0
R13: dffffc0000000000 R14: ffffc9000079f3d0 R15: ffffc9000079f3d0
FS: 0000555556ef9480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011ee5e000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 38 ff cmp %bh,%bh
2: 49 8d 5f 08 lea 0x8(%r15),%rbx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
12: 74 08 je 0x1c
14: 48 89 df mov %rbx,%rdi
17: e8 37 04 7b ff call 0xff7b0453
1c: 48 8b 1b mov (%rbx),%rbx
1f: 48 83 c3 30 add $0x30,%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 1a 04 7b ff call 0xff7b0453
39: 48 8b 1b mov (%rbx),%rbx
3c: 48 83 c3 0c add $0xc,%rbx