================================================================== BUG: KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free write to 0xffff8880a02cd422 of 1 bytes by task 18643 on cpu 0: __bpf_lru_node_move kernel/bpf/bpf_lru_list.c:111 [inline] __bpf_lru_list_rotate_active kernel/bpf/bpf_lru_list.c:151 [inline] __bpf_lru_list_rotate+0x328/0x7b0 kernel/bpf/bpf_lru_list.c:240 bpf_lru_list_pop_free_to_local kernel/bpf/bpf_lru_list.c:329 [inline] bpf_common_lru_pop_free kernel/bpf/bpf_lru_list.c:447 [inline] bpf_lru_pop_free+0x7b7/0xeb0 kernel/bpf/bpf_lru_list.c:499 prealloc_lru_pop kernel/bpf/hashtab.c:237 [inline] htab_lru_map_update_elem+0xb1/0x410 kernel/bpf/hashtab.c:1043 bpf_map_update_value+0x1b4/0x320 kernel/bpf/syscall.c:197 generic_map_update_batch+0x336/0x450 kernel/bpf/syscall.c:1342 bpf_map_do_batch+0x286/0x2f0 kernel/bpf/syscall.c:3835 __do_sys_bpf+0xb00/0x9940 kernel/bpf/syscall.c:4178 __se_sys_bpf kernel/bpf/syscall.c:4072 [inline] __x64_sys_bpf+0x3d/0x50 kernel/bpf/syscall.c:4072 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880a02cd422 of 1 bytes by task 18634 on cpu 1: bpf_common_lru_push_free kernel/bpf/bpf_lru_list.c:507 [inline] bpf_lru_push_free+0xd7/0x590 kernel/bpf/bpf_lru_list.c:555 htab_lru_map_update_elem+0x3e6/0x410 kernel/bpf/hashtab.c:1072 bpf_map_update_value+0x1b4/0x320 kernel/bpf/syscall.c:197 generic_map_update_batch+0x336/0x450 kernel/bpf/syscall.c:1342 bpf_map_do_batch+0x286/0x2f0 kernel/bpf/syscall.c:3835 __do_sys_bpf+0xb00/0x9940 kernel/bpf/syscall.c:4178 __se_sys_bpf kernel/bpf/syscall.c:4072 [inline] __x64_sys_bpf+0x3d/0x50 kernel/bpf/syscall.c:4072 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 18634 Comm: syz-executor.0 Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================