================================================================== BUG: KCSAN: data-race in __bpf_lru_list_shrink / __htab_lru_percpu_map_update_elem write to 0xffff888145164323 of 1 bytes by task 8262 on cpu 0: bpf_lru_node_set_ref kernel/bpf/bpf_lru_list.h:71 [inline] __htab_lru_percpu_map_update_elem+0x39b/0x7f0 kernel/bpf/hashtab.c:1310 bpf_percpu_hash_update+0x5a/0x90 kernel/bpf/hashtab.c:2282 bpf_map_update_value+0x1dd/0x2f0 kernel/bpf/syscall.c:200 generic_map_update_batch+0x36e/0x4d0 kernel/bpf/syscall.c:1657 bpf_map_do_batch+0x373/0x3d0 __sys_bpf+0x5d4/0x620 __do_sys_bpf kernel/bpf/syscall.c:5057 [inline] __se_sys_bpf kernel/bpf/syscall.c:5055 [inline] __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:5055 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888145164323 of 1 bytes by task 8269 on cpu 1: bpf_lru_node_is_ref kernel/bpf/bpf_lru_list.c:44 [inline] __bpf_lru_list_shrink_inactive kernel/bpf/bpf_lru_list.c:218 [inline] __bpf_lru_list_shrink+0xd5/0x700 kernel/bpf/bpf_lru_list.c:266 bpf_lru_list_pop_free_to_local kernel/bpf/bpf_lru_list.c:340 [inline] bpf_common_lru_pop_free kernel/bpf/bpf_lru_list.c:447 [inline] bpf_lru_pop_free+0x892/0xf00 kernel/bpf/bpf_lru_list.c:499 prealloc_lru_pop kernel/bpf/hashtab.c:310 [inline] __htab_lru_percpu_map_update_elem+0xdb/0x7f0 kernel/bpf/hashtab.c:1294 bpf_percpu_hash_update+0x5a/0x90 kernel/bpf/hashtab.c:2282 bpf_map_update_value+0x1dd/0x2f0 kernel/bpf/syscall.c:200 generic_map_update_batch+0x36e/0x4d0 kernel/bpf/syscall.c:1657 bpf_map_do_batch+0x373/0x3d0 __sys_bpf+0x5d4/0x620 __do_sys_bpf kernel/bpf/syscall.c:5057 [inline] __se_sys_bpf kernel/bpf/syscall.c:5055 [inline] __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:5055 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x00 -> 0x01 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 8269 Comm: syz-executor.2 Not tainted 6.0.0-rc4-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 ==================================================================