------------[ cut here ]------------
WARNING: CPU: 0 PID: 8832 at kernel/events/core.c:10226 __perf_event_overflow+0xaf9/0xe10 kernel/events/core.c:10226
Modules linked in:
CPU: 0 UID: 0 PID: 8832 Comm: syz.4.923 Not tainted 6.15.0-rc4-syzkaller-gc8ce7db0ca83 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__perf_event_overflow+0xaf9/0xe10 kernel/events/core.c:10226
Code: 89 3e 4c 8b 3c 24 e9 c3 fc ff ff e8 11 73 d0 ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 74 24 28 e9 06 fe ff ff e8 f8 72 d0 ff 90 <0f> 0b 90 e9 1b ff ff ff e8 ea 72 d0 ff 48 c7 c7 c0 b5 73 8b e8 fe
RSP: 0018:ffffc9000bce7480 EFLAGS: 00010283
RAX: ffffffff81ef4bd8 RBX: ffff888026811ea0 RCX: 0000000000080000
RDX: ffffc9000ce8a000 RSI: 000000000000075c RDI: 000000000000075d
RBP: ffffc9000bce7590 R08: ffff8880268120df R09: 1ffff11004d0241b
R10: dffffc0000000000 R11: ffffed1004d0241c R12: ffffc9000bce7a28
R13: dffffc0000000000 R14: ffff8880268120d8 R15: 0000000000000000
FS:  00007f8d2ae586c0(0000) GS:ffff8881260cc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000028d48000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 perf_swevent_overflow kernel/events/core.c:10324 [inline]
 perf_swevent_event+0x2f4/0x5e0 kernel/events/core.c:-1
 do_perf_sw_event kernel/events/core.c:10464 [inline]
 ___perf_sw_event+0x4a1/0x700 kernel/events/core.c:10491
 __perf_sw_event+0xfa/0x1a0 kernel/events/core.c:10503
 perf_sw_event include/linux/perf_event.h:1537 [inline]
 do_user_addr_fault+0x12e4/0x1390 arch/x86/mm/fault.c:1284
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x68/0x110 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:fault_in_readable+0xd3/0x160 mm/gup.c:2241
Code: 43 62 b8 ff 4d 89 f4 49 81 cc ff 0f 00 00 4d 89 f7 49 01 dc 49 81 e4 00 f0 ff ff 4d 39 e6 77 44 e8 22 62 b8 ff 4d 39 e7 74 47 <41> 8a 07 88 44 24 07 49 81 c7 00 10 00 00 4d 39 e7 74 07 e8 05 62
RSP: 0018:ffffc9000bce7ad0 EFLAGS: 00050287
RAX: ffffffff82075cae RBX: 0000000000000080 RCX: 0000000000080000
RDX: ffffc9000ce8a000 RSI: 00000000000006af RDI: 00000000000006b0
RBP: dffffc0000000000 R08: ffff88802574bc00 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 0000200000002000
R13: 0000000000000f80 R14: 0000200000001000 R15: 0000200000001000
 fault_in_iov_iter_readable+0x1b4/0x2f0 lib/iov_iter.c:94
 generic_perform_write+0x7cc/0x910 mm/filemap.c:4152
 shmem_file_write_iter+0xf8/0x120 mm/shmem.c:3464
 new_sync_write fs/read_write.c:591 [inline]
 vfs_write+0x548/0xa90 fs/read_write.c:684
 ksys_write+0x145/0x250 fs/read_write.c:736
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8d29f8e969
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:00007f8d2ae58038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8d2a1b5fa0 RCX: 00007f8d29f8e969
RDX: 000000011ffffce1 RSI: 0000200000000080 RDI: 0000000000000006
RBP: 00007f8d2a010ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8d2a1b5fa0 R15: 00007ffd52feb1d8
 </TASK>
----------------
Code disassembly (best guess):
   0:	43 62                	rex.XB (bad)
   2:	b8 ff 4d 89 f4       	mov    $0xf4894dff,%eax
   7:	49 81 cc ff 0f 00 00 	or     $0xfff,%r12
   e:	4d 89 f7             	mov    %r14,%r15
  11:	49 01 dc             	add    %rbx,%r12
  14:	49 81 e4 00 f0 ff ff 	and    $0xfffffffffffff000,%r12
  1b:	4d 39 e6             	cmp    %r12,%r14
  1e:	77 44                	ja     0x64
  20:	e8 22 62 b8 ff       	call   0xffb86247
  25:	4d 39 e7             	cmp    %r12,%r15
  28:	74 47                	je     0x71
* 2a:	41 8a 07             	mov    (%r15),%al <-- trapping instruction
  2d:	88 44 24 07          	mov    %al,0x7(%rsp)
  31:	49 81 c7 00 10 00 00 	add    $0x1000,%r15
  38:	4d 39 e7             	cmp    %r12,%r15
  3b:	74 07                	je     0x44
  3d:	e8                   	.byte 0xe8
  3e:	05                   	.byte 0x5
  3f:	62                   	.byte 0x62