------------[ cut here ]------------ WARNING: CPU: 0 PID: 6821 at kernel/events/core.c:10329 __perf_event_overflow+0xaf9/0xe10 kernel/events/core.c:10329 Modules linked in: CPU: 0 UID: 0 PID: 6821 Comm: syz.4.299 Not tainted 6.16.0-rc3-syzkaller-ge34a79b96ab9 #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 e1 1c d0 ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 74 24 28 e9 06 fe ff ff e8 c8 1c d0 ff 90 <0f> 0b 90 e9 1b ff ff ff e8 ba 1c d0 ff 48 c7 c7 20 e1 93 8b e8 3e RSP: 0018:ffffc90003007680 EFLAGS: 00010283 RAX: ffffffff81f031a8 RBX: ffff888056e4ddc0 RCX: 0000000000080000 RDX: ffffc9000dbbd000 RSI: 0000000000000dee RDI: 0000000000000def RBP: ffffc90003007790 R08: ffff888056e4e00f R09: 1ffff1100adc9c01 R10: dffffc0000000000 R11: ffffed100adc9c02 R12: ffffc90003007bf8 R13: dffffc0000000000 R14: ffff888056e4e008 R15: 0000000000000000 FS: 00007f60158b76c0(0000) GS:ffff888125c50000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 0000000030c3c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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:__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 f9 03 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003007ca0 EFLAGS: 00050283 RAX: 0000000000000004 RBX: ffffc90003007da0 RCX: 8073a9ce9cf1ef00 RDX: 00007ffffffff000 RSI: ffffffff8db6efc9 RDI: ffffffff8be28d40 RBP: ffffc90003007ee0 R08: 0000000000000000 R09: ffffffff820c48e0 R10: dffffc0000000000 R11: fffff91ffff05005 R12: ffffc90003007da0 R13: 0000000000000004 R14: 0000000000000009 R15: 0000000000000000 perf_copy_attr+0x45/0x880 kernel/events/core.c:13042 __do_sys_perf_event_open kernel/events/core.c:13355 [inline] __se_sys_perf_event_open+0xdd/0x1d70 kernel/events/core.c:13333 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: 0033:0x7f601498e929 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:00007f60158b7038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f6014bb6080 RCX: 00007f601498e929 RDX: 0000000000000009 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f6014a10b39 R08: 0000000000000009 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6014bb6080 R15: 00007ffccb281ca8 ---------------- 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 f9 03 00 jmp 0x3f9b6 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