WARNING in trace_check

Kernel	Title	Rank ðŸ›ˆ	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	WARNING in trace_check_vprintf	-1				3	21d	36d	0/3	upstream: reported on 2026/07/27 19:43

' current_buffer: '       syz.0.894-7561    [001] .....   159.423210: tracing_mark_write: ÌÇªÉã 9xŒ$ÛFšw¯²usò…S[[¸Hí¼êG—XÖ*QíWíroÔ`
       syz.0.894-7561    [001] .....   159.423223: tracing_mark_write: <faulted>
      syz.0.1701-10240   [000] .....   233.785977: kvm_update_master_clock: masterclock 0 hostclock tsc offsetmatched 0
      syz.0.1701-10240   [000] .....   233.797160: kvm_cpuid: func 1 idx 0 rax 0 rbx 0 rcx 0 rdx 0, cpuid entry not found
      syz.0.1701-10240   [000] d..1.   233.797352: kvm_write_tsc_offset: vcpu=0 prev=0 next=18446743539507586170
      syz.0.1701-10240   [000] d..1.   233.797361: kvm_track_tsc: vcpu_id 0 masterclock 0 offsetmatched 0 nr_online 1 hostclock tsc
      syz.0.1701-10239   [000] .....   233.904445: kvm_hv_stimer_cleanup: vcpu_id 0 timer 0
WARNING: CPU: 0 PID: 10922 at kernel/trace/trace.c:3867 trace_check_vprintf+0xd4a/0x1080 kernel/trace/trace.c:3865
Modules linked in:
CPU: 0 PID: 10922 Comm: syz.9.1947 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:trace_check_vprintf+0xd4a/0x1080 kernel/trace/trace.c:3865
Code: e8 2b 44 fc ff c6 05 63 89 fa 0b 01 48 8b 7c 24 40 e8 5a 04 00 00 48 c7 c7 80 3e 2f 8a 48 8b 74 24 60 48 89 c2 e8 36 9e 38 08 <0f> 0b e9 1c fe ff ff 48 8b 4c 24 38 80 e1 07 38 c1 0f 8c ca f7 ff
RSP: 0018:ffffc90004acfa20 EFLAGS: 00010246
RAX: 83ba06ac6a10f000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90006361000 RSI: 00000000000336f6 RDI: 00000000000336f7
RBP: ffff88804bb200d8 R08: ffff8880b902795b R09: 1ffff11017204f2b
R10: dffffc0000000000 R11: ffffed1017204f2c R12: ffffffff8a200540
R13: ffffc90004acfb60 R14: dffffc0000000000 R15: 0000000000000002
FS:  00007f7904a726c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fece55f9840 CR3: 000000001f62c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 trace_event_printf+0xea/0x140 kernel/trace/trace_output.c:320
 trace_raw_output_initcall_level+0x93/0xd0 include/trace/events/initcall.h:10
 tracing_read_pipe+0x52f/0xae0 kernel/trace/trace.c:6862
 vfs_read+0x2ff/0xd50 fs/read_write.c:483
 ksys_read+0x153/0x260 fs/read_write.c:623
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f790681a159
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:00007f7904a72028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f7906aa1fa0 RCX: 00007f790681a159
RDX: 0000000000002000 RSI: 0000200000003240 RDI: 0000000000000003
RBP: 00007f79068b1024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7906aa2038 R14: 00007f7906aa1fa0 R15: 00007ffd7a3bc288
 </TASK>

Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Assets (help?)	Manager	Title
2026/09/01 12:06	linux-5.15.y	28c35638ec51	587f6b29	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	WARNING in trace_check_vprintf
2026/08/31 17:26	linux-5.15.y	28c35638ec51	316d9396	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	WARNING in trace_check_vprintf
2026/08/19 22:23	linux-5.15.y	0eb903b5b519	1e72964b	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	WARNING in trace_check_vprintf
2026/08/13 09:27	linux-5.15.y	aabd761612db	359b2492	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	WARNING in trace_check_vprintf
2026/08/13 09:23	linux-5.15.y	aabd761612db	359b2492	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	WARNING in trace_check_vprintf