================================================================== BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv read-write to 0xffff88811136a020 of 4 bytes by interrupt on cpu 1: can_can_gw_rcv+0x807/0x820 net/can/gw.c:566 deliver net/can/af_can.c:575 [inline] can_rcv_filter+0xc7/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] batadv_nc_purge_paths+0x22b/0x270 net/batman-adv/network-coding.c:471 batadv_nc_worker+0x3d8/0xae0 net/batman-adv/network-coding.c:720 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3321 worker_thread+0x582/0x770 kernel/workqueue.c:3402 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xdd/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 read-write to 0xffff88811136a020 of 4 bytes by interrupt on cpu 0: can_can_gw_rcv+0x807/0x820 net/can/gw.c:566 deliver net/can/af_can.c:575 [inline] can_rcv_filter+0xc7/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:968 smpboot_thread_fn+0x32b/0x530 kernel/smpboot.c:164 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xdd/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 value changed: 0x000036cf -> 0x000036d0 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 14 Comm: ksoftirqd/0 Tainted: G W 6.16.0-rc2-syzkaller-00278-g3f75bfff44be #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff888101a28248 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 local_bh_enable include/linux/bottom_half.h:33 [inline] fpregs_unlock arch/x86/include/asm/fpu/api.h:77 [inline] copy_fpstate_to_sigframe+0x311/0x7d0 arch/x86/kernel/fpu/signal.c:220 get_sigframe+0x34d/0x490 arch/x86/kernel/signal.c:163 x64_setup_rt_frame+0xa8/0x580 arch/x86/kernel/signal_64.c:175 setup_rt_frame arch/x86/kernel/signal.c:250 [inline] handle_signal arch/x86/kernel/signal.c:294 [inline] arch_do_signal_or_restart+0x27c/0x480 arch/x86/kernel/signal.c:339 exit_to_user_mode_loop+0x7a/0x100 kernel/entry/common.c:111 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x1d6/0x200 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f read-write to 0xffff888101a28248 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] lock_sock_nested+0x112/0x140 net/core/sock.c:3759 lock_sock include/net/sock.h:1667 [inline] tcp_recvmsg+0x114/0x490 net/ipv4/tcp.c:2907 inet_recvmsg+0xb7/0x290 net/ipv4/af_inet.c:883 sock_recvmsg_nosec net/socket.c:1017 [inline] sock_recvmsg+0xf6/0x170 net/socket.c:1039 sock_read_iter+0x152/0x1a0 net/socket.c:1109 new_sync_read fs/read_write.c:491 [inline] vfs_read+0x5ca/0x6f0 fs/read_write.c:572 ksys_read+0xda/0x1a0 fs/read_write.c:715 __do_sys_read fs/read_write.c:724 [inline] __se_sys_read fs/read_write.c:722 [inline] __x64_sys_read+0x40/0x50 fs/read_write.c:722 x64_sys_call+0x2d77/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:1 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x000000000000a2f4 -> 0x000000000000a2f5 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 3300 Comm: syz-executor Tainted: G W 6.16.0-rc2-syzkaller-00278-g3f75bfff44be #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ================================================================== ================================================================== BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv read-write to 0xffff88811136a020 of 4 bytes by interrupt on cpu 1: can_can_gw_rcv+0x807/0x820 net/can/gw.c:566 deliver net/can/af_can.c:575 [inline] can_rcv_filter+0xc7/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] page_pool_empty_ring net/core/page_pool.c:1073 [inline] page_pool_scrub net/core/page_pool.c:1145 [inline] page_pool_release+0x302/0x860 net/core/page_pool.c:1153 page_pool_release_retry+0x1f/0x190 net/core/page_pool.c:1171 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3321 worker_thread+0x582/0x770 kernel/workqueue.c:3402 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xdd/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 read-write to 0xffff88811136a020 of 4 bytes by interrupt on cpu 0: can_can_gw_rcv+0x807/0x820 net/can/gw.c:566 deliver net/can/af_can.c:575 [inline] can_rcv_filter+0xc7/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 local_bh_enable include/linux/bottom_half.h:33 [inline] fpregs_unlock arch/x86/include/asm/fpu/api.h:77 [inline] kernel_fpu_end+0x9d/0xd0 arch/x86/kernel/fpu/core.c:476 blake2s_compress+0x5f/0xd0 arch/x86/lib/crypto/blake2s-glue.c:46 blake2s_final+0x6a/0xa0 lib/crypto/blake2s.c:54 hmac+0x14e/0x270 drivers/net/wireguard/noise.c:325 kdf drivers/net/wireguard/noise.c:360 [inline] message_ephemeral+0x134/0x1d0 drivers/net/wireguard/noise.c:493 wg_noise_handshake_create_initiation+0x1ac/0x5a0 drivers/net/wireguard/noise.c:545 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline] wg_packet_handshake_send_worker+0xb2/0x160 drivers/net/wireguard/send.c:51 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3321 worker_thread+0x582/0x770 kernel/workqueue.c:3402 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xdd/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 value changed: 0x0005c0cc -> 0x0005c0cd Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 7189 Comm: kworker/u8:54 Tainted: G W 6.16.0-rc2-syzkaller-00278-g3f75bfff44be #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff888101a28248 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 __raw_write_unlock_bh include/linux/rwlock_api_smp.h:281 [inline] _raw_write_unlock_bh+0x1f/0x30 kernel/locking/spinlock.c:366 ___neigh_create+0x10ad/0x1290 net/core/neighbour.c:676 __neigh_create+0x54/0x70 net/core/neighbour.c:695 ip6_finish_output2+0x627/0xd30 net/ipv6/ip6_output.c:132 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x3a2/0x530 net/ipv6/ip6_output.c:226 NF_HOOK_COND include/linux/netfilter.h:306 [inline] ip6_output+0xfd/0x240 net/ipv6/ip6_output.c:247 dst_output include/net/dst.h:459 [inline] NF_HOOK include/linux/netfilter.h:317 [inline] mld_sendpack+0x427/0x6e0 net/ipv6/mcast.c:1868 mld_send_cr net/ipv6/mcast.c:2169 [inline] mld_ifc_work+0x55c/0x840 net/ipv6/mcast.c:2702 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3321 worker_thread+0x582/0x770 kernel/workqueue.c:3402 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xdd/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 read-write to 0xffff888101a28248 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:968 smpboot_thread_fn+0x32b/0x530 kernel/smpboot.c:164 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xdd/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 value changed: 0x000000000006550a -> 0x000000000006550b Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 14 Comm: ksoftirqd/0 Tainted: G W 6.16.0-rc2-syzkaller-00278-g3f75bfff44be #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff888101a28248 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:968 smpboot_thread_fn+0x32b/0x530 kernel/smpboot.c:164 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xdd/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 read-write to 0xffff888101a28248 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 __raw_write_unlock_bh include/linux/rwlock_api_smp.h:281 [inline] _raw_write_unlock_bh+0x1f/0x30 kernel/locking/spinlock.c:366 sock_orphan include/net/sock.h:2079 [inline] sk_common_release+0xd8/0x220 net/core/sock.c:3975 udp_lib_close+0x15/0x20 include/net/udp.h:312 inet_release+0xcb/0xf0 net/ipv4/af_inet.c:435 inet6_release+0x3e/0x60 net/ipv6/af_inet6.c:487 __sock_release net/socket.c:647 [inline] sock_release+0x4b/0xe0 net/socket.c:675 udp_tunnel_sock_release+0x4d/0x60 net/ipv4/udp_tunnel_core.c:197 sock_free drivers/net/wireguard/socket.c:339 [inline] wg_socket_reinit+0x129/0x150 drivers/net/wireguard/socket.c:436 wg_netns_pre_exit+0xa5/0x130 drivers/net/wireguard/device.c:424 ops_pre_exit_list net/core/net_namespace.c:162 [inline] ops_undo_list+0xb5/0x410 net/core/net_namespace.c:235 cleanup_net+0x2de/0x4d0 net/core/net_namespace.c:686 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3321 worker_thread+0x582/0x770 kernel/workqueue.c:3402 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xdd/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 value changed: 0x00000000000c8ce3 -> 0x00000000000c8ce5 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 7189 Comm: kworker/u8:54 Tainted: G W 6.16.0-rc2-syzkaller-00278-g3f75bfff44be #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: netns cleanup_net ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff888101a28248 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 do_softirq+0x5d/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:407 local_bh_enable include/linux/bottom_half.h:33 [inline] napi_threaded_poll_loop+0x3af/0x4a0 net/core/dev.c:7546 napi_threaded_poll+0xda/0x160 net/core/dev.c:7561 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xdd/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 read-write to 0xffff888101a28248 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:576 [inline] can_rcv_filter+0xd9/0x4f0 net/can/af_can.c:602 can_receive+0x163/0x1c0 net/can/af_can.c:666 canfd_rcv+0xed/0x190 net/can/af_can.c:705 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6090 process_backlog+0x229/0x420 net/core/dev.c:6442 __napi_poll+0x66/0x3a0 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x391/0x830 net/core/dev.c:7605 handle_softirqs+0xba/0x290 kernel/softirq.c:579 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:968 smpboot_thread_fn+0x32b/0x530 kernel/smpboot.c:164 kthread+0x486/0x510 kernel/kthread.c:464 ret_from_fork+0xdd/0x150 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 value changed: 0x000000000012caf6 -> 0x000000000012caf7 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 14 Comm: ksoftirqd/0 Tainted: G W 6.16.0-rc2-syzkaller-00278-g3f75bfff44be #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ==================================================================