------------[ cut here ]------------
WARNING: CPU: 1 PID: 4352 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4352 Comm: syz.2.24 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 dd 99 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 60 96 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000dd0918 EFLAGS: 00010006
RAX: ffffffff81a05c40 RBX: 0000000000000008 RCX: ffff8880285b9dc0
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880285b9dc7 R09: 1ffff110050b73b8
R10: dffffc0000000000 R11: ffffed10050b73b9 R12: ffff8880285bb548
R13: 00007ffffffff000 R14: ffffc90000dd0988 R15: 0000000020000000
FS:  00007f1f97fe06c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 00000000204fb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
 bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
 bpf_prog_53432751b845b1b2+0x40/0xc90
 bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 bpf_overflow_handler+0x1c2/0x4a0 kernel/events/core.c:10297
 __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9515
 perf_swevent_hrtimer+0x3c2/0x550 kernel/events/core.c:10934
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4b0/0xb60 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x397/0x8b0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:perf_ioctl+0x1f4e/0x2300 kernel/events/core.c:5960
Code: 22 4d 89 6e 2a 48 8b 5c 24 78 48 89 df 48 83 c7 48 e8 96 42 27 08 48 89 df e8 9e 59 fc ff 48 c7 84 24 80 00 00 00 0e 36 e0 45 <49> c7 06 00 00 00 00 49 c7 46 08 00 00 00 00 49 c7 46 10 00 00 00
RSP: 0018:ffffc9000328fc40 EFLAGS: 00000283
RAX: ffffffff81975617 RBX: ffff8880224e3000 RCX: 0000000000080000
RDX: ffffc9000c881000 RSI: 0000000000000474 RDI: 0000000000000475
RBP: ffffc9000328fed8 R08: ffff8880224e3157 R09: 1ffff1100449c62a
R10: dffffc0000000000 R11: ffffed100449c62b R12: 0000000040042408
R13: f8f8f8f8f8f8f8f8 R14: fffff52000651f98 R15: 0000000000000000
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 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: 0033:0x7f1f99d86e59
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:00007f1f97fe0028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1f99ffffa0 RCX: 00007f1f99d86e59
RDX: 0000000000000004 RSI: 0000000040042408 RDI: 0000000000000005
RBP: 00007f1f99e1ce6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1f9a000038 R14: 00007f1f99ffffa0 R15: 00007ffe25c03c18
 </TASK>
----------------
Code disassembly (best guess):
   0:	22 4d 89             	and    -0x77(%rbp),%cl
   3:	6e                   	outsb  %ds:(%rsi),(%dx)
   4:	2a 48 8b             	sub    -0x75(%rax),%cl
   7:	5c                   	pop    %rsp
   8:	24 78                	and    $0x78,%al
   a:	48 89 df             	mov    %rbx,%rdi
   d:	48 83 c7 48          	add    $0x48,%rdi
  11:	e8 96 42 27 08       	call   0x82742ac
  16:	48 89 df             	mov    %rbx,%rdi
  19:	e8 9e 59 fc ff       	call   0xfffc59bc
  1e:	48 c7 84 24 80 00 00 	movq   $0x45e0360e,0x80(%rsp)
  25:	00 0e 36 e0 45
* 2a:	49 c7 06 00 00 00 00 	movq   $0x0,(%r14) <-- trapping instruction
  31:	49 c7 46 08 00 00 00 	movq   $0x0,0x8(%r14)
  38:	00
  39:	49                   	rex.WB
  3a:	c7                   	.byte 0xc7
  3b:	46 10 00             	rex.RX adc %r8b,(%rax)