------------[ cut here ]------------
failed to allocate ring buffer on CPU 1
WARNING: CPU: 0 PID: 5046 at kernel/trace/ring_buffer.c:5860 trace_rb_cpu_prepare+0x349/0x3c0 kernel/trace/ring_buffer.c:5859
Modules linked in:
CPU: 0 PID: 5046 Comm: syz.1.153 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:trace_rb_cpu_prepare+0x349/0x3c0 kernel/trace/ring_buffer.c:5859
Code: f0 48 0f ab 08 31 c0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 36 01 fd ff 48 c7 c7 80 73 90 8a 44 89 f6 e8 07 88 c8 ff <0f> 0b b8 f4 ff ff ff eb d4 e8 19 01 fd ff 0f 0b e9 07 fd ff ff e8
RSP: 0018:ffffc9000c93fa98 EFLAGS: 00010246
RAX: f27c7529dd422300 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc9000f9ac000 RSI: 000000000002d47d RDI: 000000000002d47e
RBP: ffff8880231c0e08 R08: ffff8880b8e279db R09: 1ffff110171c4f3b
R10: dffffc0000000000 R11: ffffed10171c4f3c R12: ffff8880577b38b0
R13: 0000000000000000 R14: 0000000000000001 R15: ffff8880231c0e08
FS:  00007f4b46dc46c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6a71b556c8 CR3: 000000007e530000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 cpuhp_invoke_callback+0x481/0x7e0 kernel/cpu.c:202
 cpuhp_issue_call+0x452/0x7f0 kernel/cpu.c:-1
 __cpuhp_state_add_instance_cpuslocked+0x229/0x600 kernel/cpu.c:2078
 __cpuhp_state_add_instance+0x21/0x30 kernel/cpu.c:2099
 cpuhp_state_add_instance include/linux/cpuhotplug.h:396 [inline]
 __ring_buffer_alloc+0x336/0x5d0 kernel/trace/ring_buffer.c:1878
 allocate_trace_buffer kernel/trace/trace.c:9313 [inline]
 allocate_trace_buffers+0x70/0x2b0 kernel/trace/trace.c:9345
 trace_array_create+0x2d6/0xcb0 kernel/trace/trace.c:9488
 instance_mkdir+0xc8/0x120 kernel/trace/trace.c:9534
 tracefs_syscall_mkdir+0xb7/0x110 fs/tracefs/inode.c:87
 vfs_mkdir+0x386/0x570 fs/namei.c:4157
 do_mkdirat+0x1d8/0x440 fs/namei.c:4182
 __do_sys_mkdirat fs/namei.c:4197 [inline]
 __se_sys_mkdirat fs/namei.c:4195 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4195
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4b45f9e159
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:00007f4b46dc4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f4b46226090 RCX: 00007f4b45f9e159
RDX: 00000000000001ff RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007f4b4603506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4b46226128 R14: 00007f4b46226090 R15: 00007ffe67b4cd08
 </TASK>