------------[ cut here ]------------
IS_ERR(old)
WARNING: kernel/tracepoint.c:367 at tracepoint_remove_func kernel/tracepoint.c:367 [inline], CPU#0: syz.3.1455/13703
WARNING: kernel/tracepoint.c:367 at tracepoint_probe_unregister+0x837/0xd10 kernel/tracepoint.c:513, CPU#0: syz.3.1455/13703
Modules linked in:
CPU: 0 UID: 0 PID: 13703 Comm: syz.3.1455 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:tracepoint_remove_func kernel/tracepoint.c:367 [inline]
RIP: 0010:tracepoint_probe_unregister+0x837/0xd10 kernel/tracepoint.c:513
Code: 09 e8 6d 2b fe ff 48 8d 73 f0 48 c7 c2 40 bf 09 82 48 c7 c7 a0 4c 87 8e e8 46 7b e2 ff eb ba bb fe ff ff ff e8 4a 2b fe ff 90 <0f> 0b 90 eb ac e8 3f 2b fe ff 49 89 dd 45 31 ff 49 be 00 00 00 00
RSP: 0018:ffffc900037078a8 EFLAGS: 00010287
RAX: 00000000000475c5 RBX: 00000000fffffffe RCX: ffffc9000fcda000
RDX: 0000000000080000 RSI: ffffffff8209d036 RDI: ffff88803435bc80
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff820fe820
R13: 0000000000000202 R14: 0000000000000002 R15: ffffffff8ec0b320
FS:  00007f8ec002a6c0(0000) GS:ffff88812434f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8bd8ef44e8 CR3: 00000000512ac000 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:821
 ftrace_event_enable_disable kernel/trace/trace_events.c:907 [inline]
 ftrace_clear_events kernel/trace/trace_events.c:1030 [inline]
 ftrace_event_set_open+0x224/0x380 kernel/trace/trace_events.c:2800
 do_dentry_open+0x6d8/0x1660 fs/open.c:949
 vfs_open+0x82/0x3f0 fs/open.c:1081
 do_open fs/namei.c:4671 [inline]
 path_openat+0x208c/0x31a0 fs/namei.c:4830
 do_file_open+0x20e/0x430 fs/namei.c:4859
 do_sys_openat2+0x10d/0x1e0 fs/open.c:1366
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1383
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8ebf19c629
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:00007f8ec002a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f8ebf416180 RCX: 00007f8ebf19c629
RDX: 0000000000020201 RSI: 0000200000000100 RDI: ffffffffffffff9c
RBP: 00007f8ebf232b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8ebf416218 R14: 00007f8ebf416180 R15: 00007ffc0dea6ce8
 </TASK>