================================================================== BUG: KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free write to 0xffff8880253870ca of 1 bytes by task 12188 on cpu 1: __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+0x308/0x780 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+0x79f/0xea0 kernel/bpf/bpf_lru_list.c:499 prealloc_lru_pop kernel/bpf/hashtab.c:238 [inline] htab_lru_map_update_elem+0xb1/0x430 kernel/bpf/hashtab.c:1049 bpf_map_update_value+0x1bc/0x330 kernel/bpf/syscall.c:201 generic_map_update_batch+0x344/0x450 kernel/bpf/syscall.c:1347 bpf_map_do_batch+0x2a8/0x310 kernel/bpf/syscall.c:4007 __do_sys_bpf+0x8a3/0x9aa0 kernel/bpf/syscall.c:4463 __se_sys_bpf kernel/bpf/syscall.c:4357 [inline] __x64_sys_bpf+0x3d/0x50 kernel/bpf/syscall.c:4357 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880253870ca of 1 bytes by task 12190 on cpu 0: bpf_common_lru_push_free kernel/bpf/bpf_lru_list.c:507 [inline] bpf_lru_push_free+0xd2/0x570 kernel/bpf/bpf_lru_list.c:555 htab_lru_map_update_elem+0x401/0x430 kernel/bpf/hashtab.c:1078 bpf_map_update_value+0x1bc/0x330 kernel/bpf/syscall.c:201 generic_map_update_batch+0x344/0x450 kernel/bpf/syscall.c:1347 bpf_map_do_batch+0x2a8/0x310 kernel/bpf/syscall.c:4007 __do_sys_bpf+0x8a3/0x9aa0 kernel/bpf/syscall.c:4463 __se_sys_bpf kernel/bpf/syscall.c:4357 [inline] __x64_sys_bpf+0x3d/0x50 kernel/bpf/syscall.c:4357 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12190 Comm: syz-executor.4 Not tainted 5.10.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================