------------[ cut here ]------------
IS_ERR(old)
WARNING: kernel/tracepoint.c:358 at tracepoint_remove_func kernel/tracepoint.c:358 [inline], CPU#0: syz.2.7369/19666
WARNING: kernel/tracepoint.c:358 at tracepoint_probe_unregister+0x7ff/0xc90 kernel/tracepoint.c:504, CPU#0: syz.2.7369/19666
Modules linked in:
CPU: 0 UID: 0 PID: 19666 Comm: syz.2.7369 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
RIP: 0010:tracepoint_remove_func kernel/tracepoint.c:358 [inline]
RIP: 0010:tracepoint_probe_unregister+0x7ff/0xc90 kernel/tracepoint.c:504
Code: 5e 41 5f c3 cc cc cc cc e8 4e 33 fe ff 48 8d 7b f0 48 c7 c6 10 0b 08 82 e8 de 00 e4 ff eb c1 bb fe ff ff ff e8 32 33 fe ff 90 <0f> 0b 90 eb b3 e8 27 33 fe ff 49 89 dd 45 31 ff 49 be 00 00 00 00
RSP: 0000:ffffc90000ac78a8 EFLAGS: 00010202
RAX: 0000000000000003 RBX: 00000000fffffffe RCX: ffffffff82081967
RDX: ffff88802fdcdb80 RSI: ffffffff82081bce RDI: 0000000000400000
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 000000000007fffc R12: ffffffff820e2710
R13: 0000000000000202 R14: 0000000000000002 R15: ffffffff8e999b80
FS:  00007efe5a2756c0(0000) GS:ffff8881245e5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ed1eff8 CR3: 00000000926ca000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 unregister_trace_sched_switch include/trace/events/sched.h:220 [inline]
 tracing_sched_unregister kernel/trace/trace_sched_switch.c:87 [inline]
 tracing_stop_sched_switch kernel/trace/trace_sched_switch.c:129 [inline]
 tracing_stop_cmdline_record+0x66/0xa0 kernel/trace/trace_sched_switch.c:140
 __ftrace_event_enable_disable+0x5c4/0x6f0 kernel/trace/trace_events.c:805
 ftrace_event_enable_disable kernel/trace/trace_events.c:891 [inline]
 ftrace_clear_events kernel/trace/trace_events.c:1014 [inline]
 ftrace_event_set_open+0x224/0x380 kernel/trace/trace_events.c:2675
 do_dentry_open+0x73e/0x1570 fs/open.c:962
 vfs_open+0x82/0x3f0 fs/open.c:1094
 do_open fs/namei.c:4637 [inline]
 path_openat+0x21dc/0x3120 fs/namei.c:4796
 do_filp_open+0x1f7/0x420 fs/namei.c:4823
 do_sys_openat2+0x12e/0x220 fs/open.c:1430
 do_sys_open fs/open.c:1436 [inline]
 __do_sys_openat fs/open.c:1452 [inline]
 __se_sys_openat fs/open.c:1447 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1447
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efe5939acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efe5a275028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007efe59616090 RCX: 00007efe5939acb9
RDX: 0000000000020201 RSI: 0000200000000100 RDI: ffffffffffffff9c
RBP: 00007efe59408bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efe59616128 R14: 00007efe59616090 R15: 00007ffcb080f238
 </TASK>