------------[ cut here ]------------ WARNING: CPU: 1 PID: 9615 at kernel/events/core.c:10349 __perf_event_overflow+0xaf9/0xe10 kernel/events/core.c:10349 Modules linked in: CPU: 1 UID: 0 PID: 9615 Comm: syz.3.960 Not tainted 6.16.0-syzkaller-g561c80369df0 #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:10349 Code: 89 3e 4c 8b 3c 24 e9 c3 fc ff ff e8 a1 6c d0 ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 74 24 28 e9 06 fe ff ff e8 88 6c d0 ff 90 <0f> 0b 90 e9 1b ff ff ff e8 7a 6c d0 ff 48 c7 c7 00 e6 93 8b e8 3e RSP: 0018:ffffc90003aef100 EFLAGS: 00010293 RAX: ffffffff81ef3f28 RBX: ffff8880306b4b00 RCX: ffff88802cb8bc00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003aef210 R08: ffff8880306b4d4f R09: 1ffff110060d69a9 R10: dffffc0000000000 R11: ffffed10060d69aa R12: ffffc90003aef6a8 R13: dffffc0000000000 R14: ffff8880306b4d48 R15: 0000000000000000 FS: 00007f33c85ab6c0(0000) GS:ffff888125d1c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001000 CR3: 000000007e5b8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: perf_swevent_overflow kernel/events/core.c:10447 [inline] perf_swevent_event+0x2f4/0x5e0 kernel/events/core.c:-1 do_perf_sw_event kernel/events/core.c:10587 [inline] ___perf_sw_event+0x4a1/0x700 kernel/events/core.c:10614 __perf_sw_event+0xfa/0x1a0 kernel/events/core.c:10626 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:rep_movs_alternative+0x4a/0x90 arch/x86/lib/copy_user_64.S:74 Code: 0a 04 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 a4 c3 cc cc cc cc 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 RSP: 0018:ffffc90003aef758 EFLAGS: 00050206 RAX: ffffffff84c58b01 RBX: ffff888067540000 RCX: 0000000000033020 RDX: 0000000000000001 RSI: 0000200000001000 RDI: ffff888067540fc0 RBP: ffffc90003aef8b0 R08: ffff888067573fdf R09: 1ffff1100ceae7fb R10: dffffc0000000000 R11: ffffed100ceae7fc R12: 1ffff9200075dfbf R13: 0000200000000040 R14: ffffc90003aefe08 R15: 0000000000033fe0 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline] copy_from_user_iter lib/iov_iter.c:55 [inline] iterate_ubuf include/linux/iov_iter.h:30 [inline] iterate_and_advance2 include/linux/iov_iter.h:300 [inline] iterate_and_advance include/linux/iov_iter.h:328 [inline] __copy_from_iter lib/iov_iter.c:249 [inline] _copy_from_iter+0x24c/0x16f0 lib/iov_iter.c:260 copy_from_iter include/linux/uio.h:228 [inline] copy_from_iter_full include/linux/uio.h:245 [inline] memcpy_from_msg include/linux/skbuff.h:4220 [inline] netlink_sendmsg+0x6b2/0xb30 net/netlink/af_netlink.c:1881 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:729 ____sys_sendmsg+0x505/0x830 net/socket.c:2614 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668 __sys_sendmsg net/socket.c:2700 [inline] __do_sys_sendmsg net/socket.c:2705 [inline] __se_sys_sendmsg net/socket.c:2703 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2703 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: 0033:0x7f33c778ebe9 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:00007f33c85ab038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f33c79b5fa0 RCX: 00007f33c778ebe9 RDX: 3500000000000000 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007f33c7811e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f33c79b6038 R14: 00007f33c79b5fa0 R15: 00007fffe9639678 ---------------- Code disassembly (best guess): 0: 0a 04 00 or (%rax,%rax,1),%al 3: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) a: 00 00 00 d: 0f 1f 00 nopl (%rax) 10: 48 8b 06 mov (%rsi),%rax 13: 48 89 07 mov %rax,(%rdi) 16: 48 83 c6 08 add $0x8,%rsi 1a: 48 83 c7 08 add $0x8,%rdi 1e: 83 e9 08 sub $0x8,%ecx 21: 74 db je 0xfffffffe 23: 83 f9 08 cmp $0x8,%ecx 26: 73 e8 jae 0x10 28: eb c5 jmp 0xffffffef * 2a: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction 2c: c3 ret 2d: cc int3 2e: cc int3 2f: cc int3 30: cc int3 31: 48 8b 06 mov (%rsi),%rax 34: 48 89 07 mov %rax,(%rdi) 37: 48 8d 47 08 lea 0x8(%rdi),%rax 3b: 48 83 e0 f8 and $0xfffffffffffffff8,%rax 3f: 48 rex.W