CFI failure at __traceiter_mm_lru_insertion+0x75/0xc0 include/trace/events/pagemap.h:28 (target: tp_stub_func+0x0/0x10; expected type: 0x1afd09c9) invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 14381 Comm: syz.2.3368 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:__traceiter_mm_lru_insertion+0x75/0xc0 include/trace/events/pagemap.h:28 Code: 49 8d 7e 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 8e cc 16 00 49 8b 7f 08 48 89 de 41 ba 37 f6 02 e5 45 03 55 fc 74 02 <0f> 0b 41 ff d5 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 RSP: 0018:ffffc90000b770f8 EFLAGS: 00010093 RAX: 1ffff110238c8493 RBX: ffffea0005161980 RCX: 0000000000080000 RDX: ffffc9000f9d1000 RSI: ffffea0005161980 RDI: ffffc90000803000 RBP: ffffc90000b77120 R08: dffffc0000000000 R09: fffffbfff0ee4b3e R10: 000000008a435d43 R11: 1ffffffff0ee4b3d R12: dffffc0000000000 R13: ffffffff817125c0 R14: ffff88811c642490 R15: ffff88811c642490 FS: 00007f154d05b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000c52030 CR3: 000000012f90c000 CR4: 00000000003506a0 Call Trace: trace_mm_lru_insertion include/trace/events/pagemap.h:28 [inline] lru_add_fn+0x616/0x660 mm/swap.c:221 folio_batch_move_lru+0x282/0x470 mm/swap.c:238 folio_batch_add_and_move mm/swap.c:255 [inline] folio_add_lru+0x21c/0x390 mm/swap.c:526 folio_add_lru_vma+0x62/0x80 mm/swap.c:546 lru_cache_add_inactive_or_unevictable+0x5d/0x80 mm/folio-compat.c:94 wp_page_copy+0xd3d/0x15b0 mm/memory.c:3280 do_wp_page+0x9f2/0xfc0 mm/memory.c:-1 handle_pte_fault mm/memory.c:5189 [inline] __handle_mm_fault mm/memory.c:5313 [inline] handle_mm_fault+0x10e4/0x2640 mm/memory.c:5453 do_user_addr_fault+0x63b/0x1050 arch/x86/mm/fault.c:1374 handle_page_fault arch/x86/mm/fault.c:1466 [inline] exc_page_fault+0x51/0xb0 arch/x86/mm/fault.c:1522 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:608 RIP: 0010:__put_user_nocheck_4+0x3/0x11 Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 90 90 90 90 90 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca c3 90 90 90 90 90 90 48 bb f9 ef ff ff ff 7f RSP: 0018:ffffc90000b778b8 EFLAGS: 00050202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000200000c52030 RDX: ffff888132118000 RSI: 0000000000000002 RDI: 00000000ffffffff RBP: ffffc90000b77a50 R08: dffffc0000000000 R09: fffff5200016eecd R10: fffff5200016eecd R11: 1ffff9200016eecc R12: dffffc0000000000 R13: 0000200000c52000 R14: 0000000000000000 R15: 0000000000000002 ___sys_recvmsg+0x1b2/0x510 net/socket.c:2770 do_recvmmsg+0x359/0x7a0 net/socket.c:2864 __sys_recvmmsg net/socket.c:2943 [inline] __do_sys_recvmmsg net/socket.c:2966 [inline] __se_sys_recvmmsg net/socket.c:2959 [inline] __x64_sys_recvmmsg+0x18d/0x240 net/socket.c:2959 x64_sys_call+0x3e7/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:300 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f154c18ebe9 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:00007f154d05b038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f154c3c6090 RCX: 00007f154c18ebe9 RDX: 03fffffffffffeda RSI: 00002000000000c0 RDI: 0000000000000003 RBP: 00007f154c211e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f154c3c6128 R14: 00007f154c3c6090 R15: 00007ffd350999d8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__traceiter_mm_lru_insertion+0x75/0xc0 include/trace/events/pagemap.h:28 Code: 49 8d 7e 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 8e cc 16 00 49 8b 7f 08 48 89 de 41 ba 37 f6 02 e5 45 03 55 fc 74 02 <0f> 0b 41 ff d5 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 RSP: 0018:ffffc90000b770f8 EFLAGS: 00010093 RAX: 1ffff110238c8493 RBX: ffffea0005161980 RCX: 0000000000080000 RDX: ffffc9000f9d1000 RSI: ffffea0005161980 RDI: ffffc90000803000 RBP: ffffc90000b77120 R08: dffffc0000000000 R09: fffffbfff0ee4b3e R10: 000000008a435d43 R11: 1ffffffff0ee4b3d R12: dffffc0000000000 R13: ffffffff817125c0 R14: ffff88811c642490 R15: ffff88811c642490 FS: 00007f154d05b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000c52030 CR3: 000000012f90c000 CR4: 00000000003506a0 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 48 39 d9 cmp %rbx,%rcx 5: 73 54 jae 0x5b 7: 0f 01 cb stac a: 66 89 01 mov %ax,(%rcx) d: 31 c9 xor %ecx,%ecx f: 0f 01 ca clac 12: c3 ret 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 48 bb fd ef ff ff ff movabs $0x7fffffffeffd,%rbx 1f: 7f 00 00 22: 48 39 d9 cmp %rbx,%rcx 25: 73 34 jae 0x5b 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: 90 nop 33: 90 nop 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 48 rex.W 39: bb f9 ef ff ff mov $0xffffeff9,%ebx 3e: ff (bad) 3f: 7f .byte 0x7f