syzbot

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WARNING: CPU: 1 PID: 6011 at kernel/events/core.c:10329 __perf_event_overflow+0xaf9/0xe10 kernel/events/core.c:10329
Modules linked in:
CPU: 1 UID: 0 PID: 6011 Comm: syz.0.18 Not tainted 6.16.0-rc4-syzkaller-gbf4807c89d8f #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:10329
Code: 89 3e 4c 8b 3c 24 e9 c3 fc ff ff e8 41 1d d0 ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 74 24 28 e9 06 fe ff ff e8 28 1d d0 ff 90 <0f> 0b 90 e9 1b ff ff ff e8 1a 1d d0 ff 48 c7 c7 20 e3 93 8b e8 8e
RSP: 0018:ffffc900031773c0 EFLAGS: 00010293
RAX: ffffffff81f04178 RBX: ffff88801d2c8640 RCX: ffff888011448000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900031774d0 R08: ffff88801d2c888f R09: 1ffff11003a59111
R10: dffffc0000000000 R11: ffffed1003a59112 R12: ffffc90003177968
R13: dffffc0000000000 R14: ffff88801d2c8888 R15: 0000000000000000
FS:  00007fd072acf6c0(0000) GS:ffff888125d1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000430 CR3: 00000000794f6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 perf_swevent_overflow kernel/events/core.c:10427 [inline]
 perf_swevent_event+0x2f4/0x5e0 kernel/events/core.c:-1
 do_perf_sw_event kernel/events/core.c:10567 [inline]
 ___perf_sw_event+0x4a1/0x700 kernel/events/core.c:10594
 __perf_sw_event+0xfa/0x1a0 kernel/events/core.c:10606
 perf_sw_event include/linux/perf_event.h:1596 [inline]
 do_user_addr_fault+0x12e4/0x1390 arch/x86/mm/fault.c:1283
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:__put_user_nocheck_4+0x3/0x10 arch/x86/lib/putuser.S:104
Code: d9 0f 01 cb 89 01 31 c9 0f 01 ca e9 17 3b 03 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 01 cb <89> 01 31 c9 0f 01 ca c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90003177a18 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000200000000430
RDX: ffff888011448000 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: ffffc90003177b90 R08: ffffc90003177607 R09: 1ffff9200062eec0
R10: dffffc0000000000 R11: fffff5200062eec1 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000200000000400
 ____sys_recvmsg+0x2ab/0x460 net/socket.c:2799
 ___sys_recvmsg+0x1b5/0x510 net/socket.c:2828
 __sys_recvmsg net/socket.c:2861 [inline]
 __do_sys_recvmsg net/socket.c:2867 [inline]
 __se_sys_recvmsg net/socket.c:2864 [inline]
 __x64_sys_recvmsg+0x198/0x260 net/socket.c:2864
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd071b8e929
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:00007fd072acf038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007fd071db5fa0 RCX: 00007fd071b8e929
RDX: 0000000000000000 RSI: 0000200000000400 RDI: 0000000000000004
RBP: 00007fd071c10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd071db5fa0 R15: 00007fff006e3db8
 </TASK>
----------------
Code disassembly (best guess):
   0:	d9 0f                	(bad)  (%rdi)
   2:	01 cb                	add    %ecx,%ebx
   4:	89 01                	mov    %eax,(%rcx)
   6:	31 c9                	xor    %ecx,%ecx
   8:	0f 01 ca             	clac
   b:	e9 17 3b 03 00       	jmp    0x33b27
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	0f 01 cb             	stac
* 2a:	89 01                	mov    %eax,(%rcx) <-- trapping instruction
  2c:	31 c9                	xor    %ecx,%ecx
  2e:	0f 01 ca             	clac
  31:	c3                   	ret
  32:	cc                   	int3
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  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