------------[ cut here ]------------ WARNING: CPU: 0 PID: 24984 at kernel/events/core.c:10329 __perf_event_overflow+0xaf9/0xe10 kernel/events/core.c:10329 Modules linked in: CPU: 0 UID: 0 PID: 24984 Comm: syz.3.4898 Not tainted 6.16.0-syzkaller-g1b30d4441727 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 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 01 7a d0 ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 74 24 28 e9 06 fe ff ff e8 e8 79 d0 ff 90 <0f> 0b 90 e9 1b ff ff ff e8 da 79 d0 ff 48 c7 c7 80 e3 93 8b e8 1e RSP: 0018:ffffc900040ef3c0 EFLAGS: 00010283 RAX: ffffffff81ef2508 RBX: ffff88806de1d140 RCX: 0000000000080000 RDX: ffffc9001f77a000 RSI: 00000000000002b9 RDI: 00000000000002ba RBP: ffffc900040ef4d0 R08: ffff88806de1d38f R09: 1ffff1100dbc3a71 R10: dffffc0000000000 R11: ffffed100dbc3a72 R12: ffffc900040ef938 R13: dffffc0000000000 R14: ffff88806de1d388 R15: 0000000000000000 FS: 00007fc7789216c0(0000) GS:ffff888125c2a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000608 CR3: 000000004f184000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 0000000000000600 Call Trace: 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 c3 cc cc cc cc 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 e9 51 44 03 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc900040ef9e0 EFLAGS: 00050283 RAX: 0000000000000000 RBX: 0000200000000608 RCX: 0000200000000608 RDX: ffffc9001f77a000 RSI: 000000000000020c RDI: 000000000000020d RBP: 0000000000000000 R08: ffffc900040ef617 R09: 0000000000000000 R10: ffffc900040ef608 R11: fffff5200081dec3 R12: 0000000000000000 R13: 000000000000006e R14: 0000200000000100 R15: ffffc900040efaa0 move_addr_to_user+0x177/0x200 net/socket.c:300 ____sys_recvmsg+0x228/0x460 net/socket.c:2841 ___sys_recvmsg+0x1b5/0x510 net/socket.c:2876 __sys_recvmsg net/socket.c:2909 [inline] __do_sys_recvmsg net/socket.c:2915 [inline] __se_sys_recvmsg net/socket.c:2912 [inline] __x64_sys_recvmsg+0x198/0x260 net/socket.c:2912 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: 0033:0x7fc777b8eb69 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:00007fc778921038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007fc777db5fa0 RCX: 00007fc777b8eb69 RDX: 0000000000002000 RSI: 0000200000000600 RDI: 0000000000000007 RBP: 00007fc777c11df1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fc777db5fa0 R15: 00007ffeaf776bb8 ---------------- 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: c3 ret c: cc int3 d: cc int3 e: cc int3 f: cc int3 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: e9 51 44 03 00 jmp 0x34487 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