[v6.6] WARNING in collect_domain_accesses

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 5fa4793a2d2d Linux 6.6.119
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11002b92580000
kernel config: https://syzkaller.appspot.com/x/.config?x=691a6769a86ac817
dashboard link: https://syzkaller.appspot.com/bug?extid=d17762643501ce8bd789
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/63699875f1dd/disk-5fa4793a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/8506652fcb6f/vmlinux-5fa4793a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1b30ceed1710/bzImage-5fa4793a.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d17762...@syzkaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 8050 at security/landlock/fs.c:748 collect_domain_accesses+0x7b6/0x820 security/landlock/fs.c:748
Modules linked in:
CPU: 0 PID: 8050 Comm: syz.2.745 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:collect_domain_accesses+0x7b6/0x820 security/landlock/fs.c:748
Code: e8 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 5f a2 a0 fd 31 ed eb dd e8 56 a2 a0 fd 0f 0b 40 b5 01 eb da e8 4a a2 a0 fd <0f> 0b eb e7 89 d1 80 e1 07 80 c1 03 38 c1 0f 8c 0e f9 ff ff 48 89
RSP: 0018:ffffc9000df57ad0 EFLAGS: 00010283
RAX: ffffffff83e4ee76 RBX: ffff88805d53c5e0 RCX: 0000000000080000
RDX: ffffc9000d4aa000 RSI: 0000000000000519 RDI: 000000000000051a
RBP: 1ffff1100ea82cf5 R08: ffffffff8e4a212f R09: 1ffffffff1c94425
R10: dffffc0000000000 R11: fffffbfff1c94426 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88805d53c5e0 R15: 0000000000002004
FS: 00007f0ba5d416c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34f23ffc CR3: 000000002befe000 CR4: 00000000003506f0
Call Trace:
<TASK>
current_check_refer_path+0x541/0xc20 security/landlock/fs.c:880
security_path_rename+0x16c/0x200 security/security.c:1828
do_renameat2+0x685/0xc70 fs/namei.c:5020
__do_sys_renameat2 fs/namei.c:5066 [inline]
__se_sys_renameat2 fs/namei.c:5063 [inline]
__x64_sys_renameat2+0xd2/0xe0 fs/namei.c:5063
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f0ba4f8f749
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:00007f0ba5d41038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f0ba51e5fa0 RCX: 00007f0ba4f8f749
RDX: 0000000000000003 RSI: 0000200000000540 RDI: 0000000000000003
RBP: 00007f0ba5013f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000580 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0ba51e6038 R14: 00007f0ba51e5fa0 R15: 00007fff73724058
</TASK>


---
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[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: 5fa4793a2d2d Linux 6.6.119
git tree: linux-6.6.y

console output: https://syzkaller.appspot.com/x/log.txt?x=17afcf1a580000

kernel config: https://syzkaller.appspot.com/x/.config?x=691a6769a86ac817
dashboard link: https://syzkaller.appspot.com/bug?extid=d17762643501ce8bd789
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17022bb4580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14582b92580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/63699875f1dd/disk-5fa4793a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/8506652fcb6f/vmlinux-5fa4793a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1b30ceed1710/bzImage-5fa4793a.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d17762...@syzkaller.appspotmail.com

------------[ cut here ]------------

WARNING: CPU: 1 PID: 5921 at security/landlock/fs.c:748 collect_domain_accesses+0x7b6/0x820 security/landlock/fs.c:748
Modules linked in:
CPU: 1 PID: 5921 Comm: syz.0.17 Not tainted syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:collect_domain_accesses+0x7b6/0x820 security/landlock/fs.c:748
Code: e8 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 5f a2 a0 fd 31 ed eb dd e8 56 a2 a0 fd 0f 0b 40 b5 01 eb da e8 4a a2 a0 fd <0f> 0b eb e7 89 d1 80 e1 07 80 c1 03 38 c1 0f 8c 0e f9 ff ff 48 89

RSP: 0018:ffffc900045dfad0 EFLAGS: 00010293
RAX: ffffffff83e4ee76 RBX: ffff888073b2d318 RCX: ffff88801a35da00
RDX: 0000000000000000 RSI: ffffffff8aaace60 RDI: ffff888073b2d368
RBP: 1ffff11005a21595 R08: ffffffff8e4a212f R09: 1ffffffff1c94425

R10: dffffc0000000000 R11: fffffbfff1c94426 R12: 0000000000000001

R13: 0000000000000000 R14: ffff888073b2d318 R15: 0000000000002004
FS: 0000555562503500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000001b33f63fff CR3: 000000002e66f000 CR4: 00000000003506e0

Call Trace:
<TASK>
current_check_refer_path+0x541/0xc20 security/landlock/fs.c:880
security_path_rename+0x16c/0x200 security/security.c:1828
do_renameat2+0x685/0xc70 fs/namei.c:5020
__do_sys_renameat2 fs/namei.c:5066 [inline]
__se_sys_renameat2 fs/namei.c:5063 [inline]
__x64_sys_renameat2+0xd2/0xe0 fs/namei.c:5063
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2

RIP: 0033:0x7f857f38f749

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:00007fffb4ec36d8 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f857f5e5fa0 RCX: 00007f857f38f749

RDX: 0000000000000003 RSI: 0000200000000540 RDI: 0000000000000003

RBP: 00007f857f413f91 R08: 0000000000000000 R09: 0000000000000000

R10: 0000200000000580 R11: 0000000000000246 R12: 0000000000000000

R13: 00007f857f5e5fa0 R14: 00007f857f5e5fa0 R15: 0000000000000005
</TASK>


---
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