================================================================== BUG: KCSAN: data-race in __bpf_lru_list_rotate / __htab_lru_percpu_map_update_elem write to 0xffff88813b4a1223 of 1 bytes by task 11286 on cpu 0: __bpf_lru_node_move kernel/bpf/bpf_lru_list.c:113 [inline] __bpf_lru_list_rotate_active kernel/bpf/bpf_lru_list.c:149 [inline] __bpf_lru_list_rotate+0x1d3/0x7b0 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+0x670/0xe90 kernel/bpf/bpf_lru_list.c:499 prealloc_lru_pop kernel/bpf/hashtab.c:310 [inline] __htab_lru_percpu_map_update_elem+0xec/0x920 kernel/bpf/hashtab.c:1298 bpf_percpu_hash_update+0x5a/0x90 kernel/bpf/hashtab.c:2284 bpf_map_update_value+0x1dd/0x2f0 kernel/bpf/syscall.c:200 generic_map_update_batch+0x36e/0x4d0 kernel/bpf/syscall.c:1637 bpf_map_do_batch+0x373/0x3d0 __sys_bpf+0x5b7/0x630 __do_sys_bpf kernel/bpf/syscall.c:5021 [inline] __se_sys_bpf kernel/bpf/syscall.c:5019 [inline] __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:5019 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+0x46/0xb0 read to 0xffff88813b4a1223 of 1 bytes by task 11287 on cpu 1: bpf_lru_node_set_ref kernel/bpf/bpf_lru_list.h:70 [inline] __htab_lru_percpu_map_update_elem+0x36d/0x920 kernel/bpf/hashtab.c:1314 bpf_percpu_hash_update+0x5a/0x90 kernel/bpf/hashtab.c:2284 bpf_map_update_value+0x1dd/0x2f0 kernel/bpf/syscall.c:200 generic_map_update_batch+0x36e/0x4d0 kernel/bpf/syscall.c:1637 bpf_map_do_batch+0x373/0x3d0 __sys_bpf+0x5b7/0x630 __do_sys_bpf kernel/bpf/syscall.c:5021 [inline] __se_sys_bpf kernel/bpf/syscall.c:5019 [inline] __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:5019 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+0x46/0xb0 value changed: 0x01 -> 0x00 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 11287 Comm: syz-executor.5 Not tainted 5.18.0-syzkaller-13710-g744983d87842-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================