netdevsim netdevsim1 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
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BUG: KCSAN: data-race in pcpu_alloc / pcpu_free_area

read-write to 0xffffffff884054dc of 4 bytes by task 13387 on cpu 0:
 pcpu_update_empty_pages mm/percpu.c:602 [inline]
 pcpu_block_update_hint_free mm/percpu.c:1044 [inline]
 pcpu_free_area+0x4e2/0x570 mm/percpu.c:1302
 free_percpu+0x1c6/0xb30 mm/percpu.c:2303
 perf_trace_event_unreg+0x17e/0x1a0 kernel/trace/trace_event_perf.c:175
 perf_trace_destroy+0x6a/0xe0 kernel/trace/trace_event_perf.c:241
 tp_perf_event_destroy+0x15/0x20 kernel/events/core.c:10086
 _free_event+0x732/0x980 kernel/events/core.c:5223
 put_event kernel/events/core.c:5320 [inline]
 perf_event_release_kernel+0x5d1/0x620 kernel/events/core.c:5432
 perf_release+0x25/0x30 kernel/events/core.c:5442
 __fput+0x2c1/0x660 fs/file_table.c:422
 __fput_sync+0x44/0x60 fs/file_table.c:507
 __do_sys_close fs/open.c:1556 [inline]
 __se_sys_close+0x101/0x1b0 fs/open.c:1541
 __x64_sys_close+0x1f/0x30 fs/open.c:1541
 x64_sys_call+0x25b9/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:4
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffffff884054dc of 4 bytes by task 13223 on cpu 1:
 pcpu_alloc+0x9aa/0x10d0 mm/percpu.c:1868
 __alloc_percpu_gfp+0x26/0x30 mm/percpu.c:1930
 fib_nh_common_init+0x48/0x2b0 net/ipv4/fib_semantics.c:591
 fib6_nh_init+0xdc3/0x15c0 net/ipv6/route.c:3620
 ip6_route_info_create+0x7b7/0xba0 net/ipv6/route.c:3807
 addrconf_f6i_alloc+0x188/0x280 net/ipv6/route.c:4583
 ipv6_add_addr+0x3c8/0x820 net/ipv6/addrconf.c:1119
 inet6_addr_add+0x3ff/0x660 net/ipv6/addrconf.c:3058
 inet6_rtm_newaddr+0x4c4/0x590 net/ipv6/addrconf.c:5046
 rtnetlink_rcv_msg+0x82e/0x8e0 net/core/rtnetlink.c:6595
 netlink_rcv_skb+0x12c/0x230 net/netlink/af_netlink.c:2559
 rtnetlink_rcv+0x1c/0x30 net/core/rtnetlink.c:6613
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x58d/0x660 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x5d3/0x6e0 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x140/0x180 net/socket.c:745
 __sys_sendto+0x1e5/0x260 net/socket.c:2191
 __do_sys_sendto net/socket.c:2203 [inline]
 __se_sys_sendto net/socket.c:2199 [inline]
 __x64_sys_sendto+0x78/0x90 net/socket.c:2199
 x64_sys_call+0x16bb/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000005a -> 0x0000005d

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 13223 Comm: syz-executor.1 Not tainted 6.9.0-rc6-syzkaller-00113-g49a73b1652c5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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