slab mnt_cache start ffff88801c6c36c0 pointer offset 184 size 352
list_del corruption. prev->next should be ffff888062fe1238, but was ffff88801c6c3778. (prev=ffff88801c6c3778)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:64!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 19211 Comm: syz.4.5098 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62
Code: e8 ab 98 50 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 bc 68 73 fd 49 8b 17 48 c7 c7 c0 86 29 8c 48 89 de 4c 89 f9 e8 e7 8b 6c fc 90 <0f> 0b 4c 89 f7 e8 7c 98 50 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 8d
RSP: 0018:ffffc90004887928 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffff888062fe1238 RCX: 2c130af42f102c00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90004887aa0 R08: ffffc900048876a7 R09: 1ffff92000910ed4
R10: dffffc0000000000 R11: fffff52000910ed5 R12: 1ffff110038d86ef
R13: dffffc0000000000 R14: ffff88801c6c3778 R15: ffff88801c6c3778
FS:  0000000000000000(0000) GS:ffff888125142000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fddc9341f60 CR3: 0000000078946000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del_init include/linux/list.h:295 [inline]
 trace_transfers fs/pnode.c:132 [inline]
 bulk_make_private+0xd9/0x8b0 fs/pnode.c:168
 umount_tree+0x582/0xd90 fs/namespace.c:1786
 put_mnt_ns+0x1d6/0x2f0 fs/namespace.c:6230
 nsproxy_free kernel/nsproxy.c:65 [inline]
 deactivate_nsproxy+0x41/0x140 kernel/nsproxy.c:79
 do_exit+0x696/0x2310 kernel/exit.c:970
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1112
 get_signal+0x1284/0x1330 kernel/signal.c:3034
 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efefd75b78e
Code: Unable to access opcode bytes at 0x7efefd75b764.
RSP: 002b:00007efefe592f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007efefe5936c0 RCX: 00007efefd75b78e
RDX: 00007efefe592fb0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007efefd808c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efefda16038 R14: 00007efefda15fa0 R15: 00007fff4cc26908
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62
Code: e8 ab 98 50 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 bc 68 73 fd 49 8b 17 48 c7 c7 c0 86 29 8c 48 89 de 4c 89 f9 e8 e7 8b 6c fc 90 <0f> 0b 4c 89 f7 e8 7c 98 50 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 8d
RSP: 0018:ffffc90004887928 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffff888062fe1238 RCX: 2c130af42f102c00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90004887aa0 R08: ffffc900048876a7 R09: 1ffff92000910ed4
R10: dffffc0000000000 R11: fffff52000910ed5 R12: 1ffff110038d86ef
R13: dffffc0000000000 R14: ffff88801c6c3778 R15: ffff88801c6c3778
FS:  0000000000000000(0000) GS:ffff888125142000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fddc9341f60 CR3: 0000000078946000 CR4: 00000000003526f0