linux-kernel - [syzbot] [trace?] WARNING in tracepoint_probe

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Message-ID: <6761e9b5.050a0220.29fcd0.007b.GAE@google.com>
Date: Tue, 17 Dec 2024 13:14:29 -0800
From: syzbot <syzbot+a1d25e53cd4a10f7f2d3@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org, 
	mathieu.desnoyers@...icios.com, mhiramat@...nel.org, rostedt@...dmis.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [trace?] WARNING in tracepoint_probe_unregister (3)

Hello,

syzbot found the following issue on:

HEAD commit:    243f750a2df0 Merge tag 'gpio-fixes-for-v6.13-rc3' of git:/..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1310a4f8580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=99a5586995ec03b2
dashboard link: https://syzkaller.appspot.com/bug?extid=a1d25e53cd4a10f7f2d3
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/939c742e99e7/disk-243f750a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/76db565b11d6/vmlinux-243f750a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/822230eb0753/bzImage-243f750a.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a1d25e53cd4a10f7f2d3@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 8817 at kernel/tracepoint.c:358 tracepoint_remove_func kernel/tracepoint.c:358 [inline]
WARNING: CPU: 0 PID: 8817 at kernel/tracepoint.c:358 tracepoint_probe_unregister+0x894/0xd70 kernel/tracepoint.c:504
Modules linked in:
CPU: 0 UID: 0 PID: 8817 Comm: syz.3.789 Not tainted 6.13.0-rc2-syzkaller-00192-g243f750a2df0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:tracepoint_remove_func kernel/tracepoint.c:358 [inline]
RIP: 0010:tracepoint_probe_unregister+0x894/0xd70 kernel/tracepoint.c:504
Code: 41 5e 41 5f c3 cc cc cc cc e8 68 27 fe ff 48 c7 c6 60 05 9b 81 48 89 df e8 79 52 e5 ff eb 9f bb fe ff ff ff e8 4d 27 fe ff 90 <0f> 0b 90 eb 91 e8 42 27 fe ff 48 89 da 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc90003427898 EFLAGS: 00010287
RAX: 000000000000951e RBX: 00000000fffffffe RCX: ffffc9000c9ec000
RDX: 0000000000080000 RSI: ffffffff819b16a3 RDI: 0000000000000005
RBP: ffffffff8ecbb240 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000003 R12: ffffffff81a0da30
R13: 0000000000000602 R14: 0000000000000002 R15: ffffffff8de3f8d8
FS:  00007fe8b075e6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe8b075df98 CR3: 000000007a564000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 unregister_trace_sched_switch include/trace/events/sched.h:222 [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+0x73f/0x850 kernel/trace/trace_events.c:645
 ftrace_event_enable_disable kernel/trace/trace_events.c:730 [inline]
 ftrace_clear_events kernel/trace/trace_events.c:739 [inline]
 ftrace_event_set_open+0x238/0x2d0 kernel/trace/trace_events.c:2270
 do_dentry_open+0xf59/0x1ea0 fs/open.c:945
 vfs_open+0x82/0x3f0 fs/open.c:1075
 do_open fs/namei.c:3828 [inline]
 path_openat+0x1e6a/0x2d60 fs/namei.c:3987
 do_filp_open+0x20c/0x470 fs/namei.c:4014
 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402
 do_sys_open fs/open.c:1417 [inline]
 __do_sys_openat fs/open.c:1433 [inline]
 __se_sys_openat fs/open.c:1428 [inline]
 __x64_sys_openat+0x175/0x210 fs/open.c:1428
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe8af985d19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe8b075e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fe8afb75fa0 RCX: 00007fe8af985d19
RDX: 0000000000020201 RSI: 0000000020000100 RDI: ffffffffffffff9c
RBP: 00007fe8afa01a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fe8afb75fa0 R15: 00007ffd25015738
 </TASK>


---
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