------------[ cut here ]------------ 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: 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 ---------------- 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