------------[ cut here ]-[  271.222023][ T5816] ------------[ cut here ]------------
kernel BUG at arch/x86/mm/physaddr.c:28!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5816 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__phys_addr+0x173/0x180 arch/x86/mm/physaddr.c:28
Code: e8 42 23 49 00 48 c7 c7 f0 d6 21 8d 48 89 de 4c 89 f2 e8 80 f5 39 03 e9 4d ff ff ff e8 26 23 49 00 90 0f 0b e8 1e 23 49 00 90 <0f> 0b e8 16 23 49 00 90 0f 0b 0f 1f 00 90 90 90 90 90 90 90 90 90
RSP: 0000:ffffc90004b1fcb8 EFLAGS: 00010293
RAX: ffffffff817414a2 RBX: 0000607fffc8d6d0 RCX: ffff88802bf7bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffe8ffffc8d6d0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1d6a987 R12: ffffea0000000000
R13: 0000000000000000 R14: 000000000000002e R15: 0000000000000001
FS:  000055556b83e500(0000) GS:ffff88812703b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd308eec38 CR3: 0000000028610000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 virt_to_folio include/linux/mm.h:1245 [inline]
 virt_to_slab mm/slab.h:191 [inline]
 qlink_to_cache mm/kasan/quarantine.c:131 [inline]
 qlist_free_all+0x39/0x140 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:352
 kasan_slab_alloc include/linux/kasan.h:252 [inline]
 slab_post_alloc_hook mm/slub.c:4946 [inline]
 slab_alloc_node mm/slub.c:5245 [inline]
 kmem_cache_alloc_noprof+0x181/0x6b0 mm/slub.c:5252
 getname_flags+0xb8/0x540 fs/namei.c:146
 user_path_at+0x24/0x60 fs/namei.c:3214
 ksys_umount fs/namespace.c:2061 [inline]
 __do_sys_umount fs/namespace.c:2069 [inline]
 __se_sys_umount fs/namespace.c:2067 [inline]
 __x64_sys_umount+0xee/0x160 fs/namespace.c:2067
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f15cfe901f7
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffd308ef3e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f15cfe901f7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd308ef4a0
RBP: 00007ffd308ef4a0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd308f0530
R13: 00007f15cff11d7d R14: 0000000000042224 R15: 00007ffd308f0570
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__phys_addr+0x173/0x180 arch/x86/mm/physaddr.c:28
Code: e8 42 23 49 00 48 c7 c7 f0 d6 21 8d 48 89 de 4c 89 f2 e8 80 f5 39 03 e9 4d ff ff ff e8 26 23 49 00 90 0f 0b e8 1e 23 49 00 90 <0f> 0b e8 16 23 49 00 90 0f 0b 0f 1f 00 90 90 90 90 90 90 90 90 90
RSP: 0000:ffffc90004b1fcb8 EFLAGS: 00010293
RAX: ffffffff817414a2 RBX: 0000607fffc8d6d0 RCX: ffff88802bf7bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffe8ffffc8d6d0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1d6a987 R12: ffffea0000000000
R13: 0000000000000000 R14: 000000000000002e R15: 0000000000000001
FS:  000055556b83e500(0000) GS:ffff88812703b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd308eec38 CR3: 0000000028610000 CR4: 00000000003526f0