------------[ cut here ]------------
WARNING: CPU: 1 PID: 6501 at kernel/events/core.c:10369 __perf_event_overflow+0xb3b/0xe40 kernel/events/core.c:10369
Modules linked in:
CPU: 1 UID: 0 PID: 6501 Comm: syz.1.169 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__perf_event_overflow+0xb3b/0xe40 kernel/events/core.c:10369
Code: 08 4c 89 f7 e8 56 0d 35 00 4d 89 3e e9 bc fa ff ff 48 c7 44 24 40 00 00 00 00 e8 40 4a cf ff e9 1c fe ff ff e8 36 4a cf ff 90 <0f> 0b 90 e9 2d ff ff ff e8 28 4a cf ff 48 c7 c7 e0 0c 74 8b e8 ec
RSP: 0018:ffffc900038df2c0 EFLAGS: 00010283
RAX: ffffffff81f0b95a RBX: 1ffff1100510c225 RCX: 0000000000080000
RDX: ffffc9000bcfb000 RSI: 00000000000000f1 RDI: 00000000000000f2
RBP: ffffc900038df3d0 R08: ffff888028860ecf R09: 1ffff1100510c1d9
R10: dffffc0000000000 R11: ffffed100510c1da R12: dffffc0000000000
R13: ffff888028860c80 R14: ffff888028860ec8 R15: 0000000000000000
FS:  00007f871567a6c0(0000) GS:ffff88812623b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000007517e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 perf_swevent_overflow kernel/events/core.c:10467 [inline]
 perf_swevent_event+0x2f4/0x5e0 kernel/events/core.c:-1
 do_perf_sw_event kernel/events/core.c:10607 [inline]
 ___perf_sw_event+0x4a1/0x700 kernel/events/core.c:10634
 __perf_sw_event+0xfa/0x1a0 kernel/events/core.c:10646
 perf_sw_event include/linux/perf_event.h:1596 [inline]
 do_user_addr_fault+0x12d9/0x1380 arch/x86/mm/fault.c:1283
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x82/0x100 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0010:rep_movs_alternative+0x4a/0x90 arch/x86/lib/copy_user_64.S:74
Code: cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 <f3> a4 e9 7f 31 04 00 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48
RSP: 0018:ffffc900038df8f8 EFLAGS: 00050206
RAX: ffffffff84874601 RBX: ffff888076a4d000 RCX: 00000000000001c0
RDX: 0000000000000001 RSI: 0000200000001000 RDI: ffff888076a4de40
RBP: ffffc900038dfa68 R08: ffff888076a4dfff R09: 1ffff1100ed49bff
R10: dffffc0000000000 R11: ffffed100ed49c00 R12: 1ffff9200071bfaf
R13: 00002000000001c0 R14: ffffc900038dfd88 R15: 0000000000001000
 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
 raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline]
 copy_from_user_iter lib/iov_iter.c:55 [inline]
 iterate_ubuf include/linux/iov_iter.h:30 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:302 [inline]
 iterate_and_advance include/linux/iov_iter.h:330 [inline]
 __copy_from_iter lib/iov_iter.c:249 [inline]
 _copy_from_iter+0x24f/0x1790 lib/iov_iter.c:260
 copy_page_from_iter+0xdd/0x170 lib/iov_iter.c:422
 anon_pipe_write+0x9f8/0x1460 fs/pipe.c:522
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f871478f6c9
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:00007f871567a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f87149e5fa0 RCX: 00007f871478f6c9
RDX: 00000000fffffdef RSI: 00002000000001c0 RDI: 0000000000000000
RBP: 00007f8714811f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f87149e6038 R14: 00007f87149e5fa0 R15: 00007ffc7e1b2d28
 </TASK>
----------------
Code disassembly (best guess):
   0:	cc                   	int3
   1:	cc                   	int3
   2:	cc                   	int3
   3:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   a:	00 00 00
   d:	0f 1f 00             	nopl   (%rax)
  10:	48 8b 06             	mov    (%rsi),%rax
  13:	48 89 07             	mov    %rax,(%rdi)
  16:	48 83 c6 08          	add    $0x8,%rsi
  1a:	48 83 c7 08          	add    $0x8,%rdi
  1e:	83 e9 08             	sub    $0x8,%ecx
  21:	74 db                	je     0xfffffffe
  23:	83 f9 08             	cmp    $0x8,%ecx
  26:	73 e8                	jae    0x10
  28:	eb c5                	jmp    0xffffffef
* 2a:	f3 a4                	rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction
  2c:	e9 7f 31 04 00       	jmp    0x431b0
  31:	48 8b 06             	mov    (%rsi),%rax
  34:	48 89 07             	mov    %rax,(%rdi)
  37:	48 8d 47 08          	lea    0x8(%rdi),%rax
  3b:	48 83 e0 f8          	and    $0xfffffffffffffff8,%rax
  3f:	48                   	rex.W