================================================================== BUG: KCSAN: data-race in bpf_lru_pop_free / htab_lru_map_update_elem write to 0xffff888022773023 of 1 bytes by task 3511 on cpu 1: bpf_lru_node_set_ref kernel/bpf/bpf_lru_list.h:70 [inline] htab_lru_map_update_elem+0x37a/0x4a0 kernel/bpf/hashtab.c:1119 bpf_map_update_value+0x1b9/0x300 kernel/bpf/syscall.c:201 generic_map_update_batch+0x344/0x450 kernel/bpf/syscall.c:1355 bpf_map_do_batch+0x286/0x2f0 kernel/bpf/syscall.c:4001 __do_sys_bpf+0x87c/0x99c0 kernel/bpf/syscall.c:4457 __se_sys_bpf kernel/bpf/syscall.c:4351 [inline] __x64_sys_bpf+0x3d/0x50 kernel/bpf/syscall.c:4351 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888022773023 of 1 bytes by task 3519 on cpu 0: bpf_lru_node_is_ref kernel/bpf/bpf_lru_list.c:44 [inline] __local_list_pop_pending kernel/bpf/bpf_lru_list.c:384 [inline] bpf_common_lru_pop_free kernel/bpf/bpf_lru_list.c:476 [inline] bpf_lru_pop_free+0xb79/0xed0 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:1355 bpf_map_do_batch+0x286/0x2f0 kernel/bpf/syscall.c:4001 __do_sys_bpf+0x87c/0x99c0 kernel/bpf/syscall.c:4457 __se_sys_bpf kernel/bpf/syscall.c:4351 [inline] __x64_sys_bpf+0x3d/0x50 kernel/bpf/syscall.c:4351 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3519 Comm: syz-executor.4 Tainted: G W 5.12.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================