CFI failure at __traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:95 (target: tp_stub_func+0x0/0x10; expected type: 0x8682d211)
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:95
Code: 8b 3d 80 53 ca 05 4d 85 ff 74 2e 48 89 d3 49 89 f6 49 8b 07 49 8b 7f 08 4c 89 f6 48 89 da 41 ba ef 2d 7d 79 44 03 50 fc 74 02 <0f> 0b ff d0 49 83 7f 18 00 4d 8d 7f 18 75 d8 31 c0 5b 41 5e 41 5f
RSP: 0018:ffffc900000d7a10 EFLAGS: 00010213
RAX: ffffffff81714610 RBX: ffff88810e1baa78 RCX: 78bceffa77f88600
RDX: ffff88810e1baa78 RSI: ffffffff81a3a019 RDI: ffffc90000255000
RBP: ffffc900000d7a28 R08: ffff8881f5c00000 R09: 00000000000181f0
R10: 000000001ebd94fb R11: 0000000000000001 R12: ffffffff81c65ac0
R13: dffffc0000000000 R14: ffffffff81a3a019 R15: ffff888131dc0928
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33f63fff CR3: 0000000006e0f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 trace_kfree include/trace/events/kmem.h:95 [inline]
 kfree+0xc9/0xf0 mm/slab_common.c:977
 kfree_const+0x39/0x40 mm/util.c:46
 free_vfsmnt+0xd9/0x130 fs/namespace.c:619
 delayed_free_vfsmnt+0x19/0x20 fs/namespace.c:628
 rcu_do_batch+0x515/0xb90 kernel/rcu/tree.c:2297
 rcu_core+0x5a5/0xe70 kernel/rcu/tree.c:2557
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2574
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 run_ksoftirqd+0x28/0x30 kernel/softirq.c:1019
 smpboot_thread_fn+0x4a0/0x910 kernel/smpboot.c:164
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:95
Code: 8b 3d 80 53 ca 05 4d 85 ff 74 2e 48 89 d3 49 89 f6 49 8b 07 49 8b 7f 08 4c 89 f6 48 89 da 41 ba ef 2d 7d 79 44 03 50 fc 74 02 <0f> 0b ff d0 49 83 7f 18 00 4d 8d 7f 18 75 d8 31 c0 5b 41 5e 41 5f
RSP: 0018:ffffc900000d7a10 EFLAGS: 00010213

RAX: ffffffff81714610 RBX: ffff88810e1baa78 RCX: 78bceffa77f88600
RDX: ffff88810e1baa78 RSI: ffffffff81a3a019 RDI: ffffc90000255000
RBP: ffffc900000d7a28 R08: ffff8881f5c00000 R09: 00000000000181f0
R10: 000000001ebd94fb R11: 0000000000000001 R12: ffffffff81c65ac0
R13: dffffc0000000000 R14: ffffffff81a3a019 R15: ffff888131dc0928
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33f63fff CR3: 0000000006e0f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400