R13: 00007f142e026038 R14: 00007f142e025fa0 R15: 00007ffecc69b8b8
 </TASK>
------------[ cut here ]------------
failed to allocate ring buffer on CPU 1
WARNING: CPU: 1 PID: 969 at kernel/trace/ring_buffer.c:7747 trace_rb_cpu_prepare+0x2c2/0x2f0 kernel/trace/ring_buffer.c:7746
Modules linked in:
CPU: 1 UID: 0 PID: 969 Comm: syz.5.179 Not tainted syzkaller #0 0cb2410fb94091bea71dcb32925679d580a9884e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:trace_rb_cpu_prepare+0x2c2/0x2f0 kernel/trace/ring_buffer.c:7746
Code: 31 c0 48 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 8d d7 fc ff 48 c7 c7 a0 e7 2f 86 8b 75 d4 e8 2e d4 77 ff <0f> 0b b8 f4 ff ff ff eb cf e8 70 d7 fc ff e9 33 ff ff ff 66 2e 0f
RSP: 0018:ffffc9000e217848 EFLAGS: 00010246
RAX: c5e37088e3040900 RBX: ffff8881399bcc10 RCX: 0000000000080000
RDX: ffffc90001201000 RSI: 00000000000652b1 RDI: 00000000000652b2
RBP: ffffc9000e2178a8 R08: ffffc9000e217527 R09: 1ffff92001c42ea4
R10: dffffc0000000000 R11: fffff52001c42ea5 R12: 0000000000000000
R13: ffff888105be2088 R14: ffff888105be2088 R15: ffff8881399bcc50
FS:  00007f142eb8e6c0(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557c53c958 CR3: 000000010abba000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 cpuhp_invoke_callback+0x69c/0xf90 kernel/cpu.c:204
 cpuhp_issue_call+0x3c4/0x710 kernel/cpu.c:-1
 __cpuhp_state_add_instance_cpuslocked+0x178/0x470 kernel/cpu.c:2432
 __cpuhp_state_add_instance+0xbf/0x190 kernel/cpu.c:2453
 cpuhp_state_add_instance include/linux/cpuhotplug.h:385 [inline]
 alloc_buffer+0x15fa/0x1cb0 kernel/trace/ring_buffer.c:2679
 __ring_buffer_alloc+0x61/0x120 kernel/trace/ring_buffer.c:2724
 allocate_trace_buffer kernel/trace/trace.c:9637 [inline]
 allocate_trace_buffers+0x2cc/0xb40 kernel/trace/trace.c:9670
 trace_array_create_systems+0x385/0xe80 kernel/trace/trace.c:9833
 trace_array_create kernel/trace/trace.c:9873 [inline]
 instance_mkdir+0xde/0x130 kernel/trace/trace.c:9888
 tracefs_syscall_mkdir+0xaa/0xe0 fs/tracefs/inode.c:139
 vfs_mkdir+0x58e/0x810 fs/namei.c:4265
 do_mkdirat+0x240/0x530 fs/namei.c:4288
 __do_sys_mkdirat fs/namei.c:4303 [inline]
 __se_sys_mkdirat fs/namei.c:4301 [inline]
 __x64_sys_mkdirat+0x8b/0xa0 fs/namei.c:4301
 x64_sys_call+0x2ba8/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f142dd9f559
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:00007f142eb8e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f142e025fa0 RCX: 00007f142dd9f559
RDX: 00000000000001ff RSI: 00002000000000c0 RDI: ffffffffffffff9c
RBP: 00007f142de36b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f142e026038 R14: 00007f142e025fa0 R15: 00007ffecc69b8b8
 </TASK>
---[ end trace 0000000000000000 ]---