================================================================== BUG: KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free write to 0xffff88810c821c22 of 1 bytes by task 11745 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+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:264 [inline] htab_lru_map_update_elem+0xaf/0x4a0 kernel/bpf/hashtab.c:1099 bpf_map_update_value+0x1b9/0x300 kernel/bpf/syscall.c:201 generic_map_update_batch+0x344/0x450 kernel/bpf/syscall.c:1350 bpf_map_do_batch+0x2a8/0x310 kernel/bpf/syscall.c:3990 __do_sys_bpf+0x8a3/0x99f0 kernel/bpf/syscall.c:4446 __se_sys_bpf kernel/bpf/syscall.c:4340 [inline] __x64_sys_bpf+0x3d/0x50 kernel/bpf/syscall.c:4340 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88810c821c22 of 1 bytes by task 11759 on cpu 1: 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+0x454/0x4a0 kernel/bpf/hashtab.c:1130 bpf_map_update_value+0x1b9/0x300 kernel/bpf/syscall.c:201 generic_map_update_batch+0x344/0x450 kernel/bpf/syscall.c:1350 bpf_map_do_batch+0x2a8/0x310 kernel/bpf/syscall.c:3990 __do_sys_bpf+0x8a3/0x99f0 kernel/bpf/syscall.c:4446 __se_sys_bpf kernel/bpf/syscall.c:4340 [inline] __x64_sys_bpf+0x3d/0x50 kernel/bpf/syscall.c:4340 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: 1 PID: 11759 Comm: syz-executor.4 Not tainted 5.11.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================