syzbot

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WARNING: CPU: 0 PID: 6531 at kernel/events/core.c:10369 __perf_event_overflow+0xb3b/0xe40 kernel/events/core.c:10369
Modules linked in:
CPU: 0 UID: 0 PID: 6531 Comm: syz.3.218 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__perf_event_overflow+0xb3b/0xe40 kernel/events/core.c:10369
Code: 08 4c 89 f7 e8 a6 f9 34 00 4d 89 3e e9 bc fa ff ff 48 c7 44 24 40 00 00 00 00 e8 f0 5e cf ff e9 1c fe ff ff e8 e6 5e cf ff 90 <0f> 0b 90 e9 2d ff ff ff e8 d8 5e cf ff 48 c7 c7 20 fb 73 8b e8 0c
RSP: 0018:ffffc9000b66f680 EFLAGS: 00010293
RAX: ffffffff81efc56a RBX: 1ffff1100b28ed15 RCX: ffff8880724b1e40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000b66f790 R08: ffff88805947664f R09: 1ffff1100b28ecc9
R10: dffffc0000000000 R11: ffffed100b28ecca R12: dffffc0000000000
R13: ffff888059476400 R14: ffff888059476648 R15: 0000000000000000
FS:  00007f910dd6c6c0(0000) GS:ffff888125d27000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000004 CR3: 000000007689a000 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:623
RIP: 0010:__get_user_4+0x14/0x20 arch/x86/lib/getuser.S:88
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 ba 00 f0 ff ff ff 7f 00 00 48 39 d0 48 0f 47 c2 0f 01 cb <8b> 10 31 c0 0f 01 ca e9 80 2e 04 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000b66fca0 EFLAGS: 00050283
RAX: 0000000000000004 RBX: ffffc9000b66fda0 RCX: a1f5018985dd0d00
RDX: 00007ffffffff000 RSI: ffffffff8d9ccc8c RDI: ffffffff8bc06160
RBP: ffffc9000b66fed0 R08: 0000000000000000 R09: ffffffff820c6470
R10: ffffc9000b66f848 R11: fffff520016cdf0b R12: ffffc9000b66fda0
R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000
 perf_copy_attr+0x45/0x880 kernel/events/core.c:13086
 __do_sys_perf_event_open kernel/events/core.c:13399 [inline]
 __se_sys_perf_event_open+0xdd/0x1d70 kernel/events/core.c:13377
 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: 0033:0x7f910cf8eec9
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:00007f910dd6c038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f910d1e5fa0 RCX: 00007f910cf8eec9
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f910d011f91 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f910d1e6038 R14: 00007f910d1e5fa0 R15: 00007ffc61c5da38
 </TASK>
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	48 ba 00 f0 ff ff ff 	movabs $0x7ffffffff000,%rdx
  1d:	7f 00 00
  20:	48 39 d0             	cmp    %rdx,%rax
  23:	48 0f 47 c2          	cmova  %rdx,%rax
  27:	0f 01 cb             	stac
* 2a:	8b 10                	mov    (%rax),%edx <-- trapping instruction
  2c:	31 c0                	xor    %eax,%eax
  2e:	0f 01 ca             	clac
  31:	e9 80 2e 04 00       	jmp    0x42eb6
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop