================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff888107ec2668 of 8 bytes by interrupt on cpu 0: can_receive+0x62/0x1f0 net/can/af_can.c:651 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff888107ec2668 of 8 bytes by interrupt on cpu 1: can_receive+0x62/0x1f0 net/can/af_can.c:651 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 local_bh_enable include/linux/bottom_half.h:33 [inline] netif_rx+0x83/0x240 net/core/dev.c:5289 can_send+0x586/0x6d0 net/can/af_can.c:287 isotp_sendmsg+0x9ab/0xc00 net/can/isotp.c:1087 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:726 ____sys_sendmsg+0x312/0x410 net/socket.c:2583 ___sys_sendmsg net/socket.c:2637 [inline] __sys_sendmsg+0x19d/0x230 net/socket.c:2669 __do_sys_sendmsg net/socket.c:2674 [inline] __se_sys_sendmsg net/socket.c:2672 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2672 x64_sys_call+0x2734/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x000000000000a4d2 -> 0x000000000000a4d4 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 5571 Comm: syz.0.14595 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff888107ec2618 of 8 bytes by interrupt on cpu 0: can_receive+0x1b6/0x1f0 net/can/af_can.c:672 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff888107ec2618 of 8 bytes by interrupt on cpu 1: can_receive+0x1b6/0x1f0 net/can/af_can.c:672 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 local_bh_enable include/linux/bottom_half.h:33 [inline] fpregs_unlock arch/x86/include/asm/fpu/api.h:80 [inline] fpu_clone+0x229/0x520 arch/x86/kernel/fpu/core.c:634 copy_thread+0x17d/0x390 arch/x86/kernel/process.c:214 copy_process+0xdf4/0x1f90 kernel/fork.c:2403 kernel_clone+0x167/0x5e0 kernel/fork.c:2806 __do_sys_clone kernel/fork.c:2949 [inline] __se_sys_clone kernel/fork.c:2933 [inline] __x64_sys_clone+0xe8/0x120 kernel/fork.c:2933 x64_sys_call+0x2d7e/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:57 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x000000000001b4a2 -> 0x000000000001b4a3 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 30285 Comm: syz-executor Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff888107ec2608 of 8 bytes by interrupt on cpu 0: can_receive+0x4e/0x1f0 net/can/af_can.c:650 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff888107ec2608 of 8 bytes by interrupt on cpu 1: can_receive+0x4e/0x1f0 net/can/af_can.c:650 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 __raw_read_unlock_bh include/linux/rwlock_api_smp.h:257 [inline] _raw_read_unlock_bh+0x1b/0x20 kernel/locking/spinlock.c:284 ipv6_get_lladdr+0x116/0x150 net/ipv6/addrconf.c:1936 mld_newpack+0x1ea/0x4f0 net/ipv6/mcast.c:1755 add_grhead net/ipv6/mcast.c:1850 [inline] add_grec+0xa07/0xbd0 net/ipv6/mcast.c:1988 mld_send_cr net/ipv6/mcast.c:2114 [inline] mld_ifc_work+0x4cc/0x7e0 net/ipv6/mcast.c:2651 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3317 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3398 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x0000000000024daa -> 0x0000000000024dab Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 1509 Comm: kworker/1:9 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: mld mld_ifc_work ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff8881032f4658 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x237/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff8881032f4658 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x237/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline] mod_peer_timer drivers/net/wireguard/timers.c:38 [inline] wg_timers_any_authenticated_packet_traversal+0xe5/0x110 drivers/net/wireguard/timers.c:215 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:36 [inline] wg_packet_handshake_send_worker+0xd7/0x150 drivers/net/wireguard/send.c:51 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3317 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3398 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x000000000002ef96 -> 0x000000000002ef97 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 9143 Comm: kworker/u8:37 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff888107ec2670 of 8 bytes by interrupt on cpu 0: can_send+0x5b6/0x6d0 net/can/af_can.c:291 can_can_gw_rcv+0x77d/0x7e0 net/can/gw.c:561 deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x225/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff888107ec2670 of 8 bytes by interrupt on cpu 1: can_send+0x5b6/0x6d0 net/can/af_can.c:291 can_can_gw_rcv+0x77d/0x7e0 net/can/gw.c:561 deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x225/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 __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] wg_index_hashtable_insert+0xaa/0x2a0 drivers/net/wireguard/peerlookup.c:126 wg_noise_handshake_create_initiation+0x52d/0x5f0 drivers/net/wireguard/noise.c:569 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline] wg_packet_handshake_send_worker+0xb3/0x150 drivers/net/wireguard/send.c:51 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3317 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3398 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x000000000000092a -> 0x000000000000092b Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 9162 Comm: kworker/u8:53 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff8881032f46f8 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x3a9/0x4c0 net/can/af_can.c:634 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff8881032f46f8 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x3a9/0x4c0 net/can/af_can.c:634 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0x3a/0xc0 kernel/softirq.c:662 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x73/0x80 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 kcsan_setup_watchpoint+0x404/0x410 kernel/kcsan/core.c:705 stack_not_used kernel/exit.c:790 [inline] check_stack_usage kernel/exit.c:842 [inline] do_exit+0x10bf/0x17f0 kernel/exit.c:981 do_group_exit+0x142/0x150 kernel/exit.c:1087 __do_sys_exit_group kernel/exit.c:1098 [inline] __se_sys_exit_group kernel/exit.c:1096 [inline] __x64_sys_exit_group+0x1f/0x20 kernel/exit.c:1096 x64_sys_call+0x2db8/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x000000000003617d -> 0x000000000003617e Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 3284 Comm: syz-executor Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff888107ec2668 of 8 bytes by interrupt on cpu 0: can_receive+0x62/0x1f0 net/can/af_can.c:651 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff888107ec2668 of 8 bytes by interrupt on cpu 1: can_receive+0x62/0x1f0 net/can/af_can.c:651 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 __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] wg_index_hashtable_insert+0xaa/0x2a0 drivers/net/wireguard/peerlookup.c:126 wg_noise_handshake_create_initiation+0x52d/0x5f0 drivers/net/wireguard/noise.c:569 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline] wg_packet_handshake_send_worker+0xb3/0x150 drivers/net/wireguard/send.c:51 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3317 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3398 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x00000000000123d6 -> 0x00000000000123d7 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 9162 Comm: kworker/u8:53 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff888107ec2618 of 8 bytes by interrupt on cpu 0: can_receive+0x1b6/0x1f0 net/can/af_can.c:672 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff888107ec2618 of 8 bytes by interrupt on cpu 1: can_receive+0x1b6/0x1f0 net/can/af_can.c:672 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 __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+0x10f/0x140 net/core/sock.c:3632 lock_sock include/net/sock.h:1623 [inline] tcp_sendmsg+0x22/0x50 net/ipv4/tcp.c:1357 inet_sendmsg+0x77/0xd0 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x102/0x180 net/socket.c:726 sock_write_iter+0x15e/0x1a0 net/socket.c:1147 new_sync_write fs/read_write.c:586 [inline] vfs_write+0x77f/0x920 fs/read_write.c:679 ksys_write+0xe8/0x1b0 fs/read_write.c:731 __do_sys_write fs/read_write.c:742 [inline] __se_sys_write fs/read_write.c:739 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:739 x64_sys_call+0x287e/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000000000599cc -> 0x00000000000599cd Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 3281 Comm: sshd Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv read-write to 0xffff888109b5c020 of 4 bytes by interrupt on cpu 0: can_can_gw_rcv+0x7cb/0x7e0 net/can/gw.c:564 deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x225/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff888109b5c020 of 4 bytes by interrupt on cpu 1: can_can_gw_rcv+0x7cb/0x7e0 net/can/gw.c:564 deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x225/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 __raw_read_unlock_bh include/linux/rwlock_api_smp.h:257 [inline] _raw_read_unlock_bh+0x1b/0x20 kernel/locking/spinlock.c:284 wg_socket_send_skb_to_peer+0x109/0x130 drivers/net/wireguard/socket.c:184 wg_socket_send_buffer_to_peer+0xee/0x120 drivers/net/wireguard/socket.c:200 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:40 [inline] wg_packet_handshake_send_worker+0x10c/0x150 drivers/net/wireguard/send.c:51 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3317 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3398 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x000600b2 -> 0x000600b3 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 9135 Comm: kworker/u8:31 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff888107ec2678 of 8 bytes by interrupt on cpu 0: can_receive+0x1ca/0x1f0 net/can/af_can.c:673 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff888107ec2678 of 8 bytes by interrupt on cpu 1: can_receive+0x1ca/0x1f0 net/can/af_can.c:673 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline] mod_peer_timer drivers/net/wireguard/timers.c:38 [inline] wg_timers_handshake_initiated+0xe5/0x110 drivers/net/wireguard/timers.c:184 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:42 [inline] wg_packet_handshake_send_worker+0x114/0x150 drivers/net/wireguard/send.c:51 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3317 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3398 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x0000000000000080 -> 0x0000000000000081 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 9135 Comm: kworker/u8:31 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff8881032f4658 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x237/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff8881032f4658 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x237/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x00000000000789e1 -> 0x00000000000789e2 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_send / can_send read-write to 0xffff888107ec2670 of 8 bytes by interrupt on cpu 0: can_send+0x5b6/0x6d0 net/can/af_can.c:291 can_can_gw_rcv+0x77d/0x7e0 net/can/gw.c:561 deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x225/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff888107ec2670 of 8 bytes by interrupt on cpu 1: can_send+0x5b6/0x6d0 net/can/af_can.c:291 can_can_gw_rcv+0x77d/0x7e0 net/can/gw.c:561 deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x225/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline] wg_index_hashtable_insert+0x26e/0x2a0 drivers/net/wireguard/peerlookup.c:161 wg_noise_handshake_create_initiation+0x52d/0x5f0 drivers/net/wireguard/noise.c:569 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline] wg_packet_handshake_send_worker+0xb3/0x150 drivers/net/wireguard/send.c:51 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3317 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3398 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x0000000000014e45 -> 0x0000000000014e46 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 11 Comm: kworker/u8:0 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv read-write to 0xffff888109b5c020 of 4 bytes by interrupt on cpu 0: can_can_gw_rcv+0x7cb/0x7e0 net/can/gw.c:564 deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x225/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff888109b5c020 of 4 bytes by interrupt on cpu 1: can_can_gw_rcv+0x7cb/0x7e0 net/can/gw.c:564 deliver net/can/af_can.c:573 [inline] can_rcv_filter+0x225/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 __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] wg_packet_decrypt_worker+0x6ac/0x6f0 drivers/net/wireguard/receive.c:499 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3317 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3398 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x000abb93 -> 0x000abb95 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 1509 Comm: kworker/1:9 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: wg-crypt-wg2 wg_packet_decrypt_worker ================================================================== ================================================================== BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter read-write to 0xffff8881032f4658 of 8 bytes by interrupt on cpu 0: deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x237/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 do_softirq+0x5e/0x90 kernel/softirq.c:462 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:389 __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] wg_packet_decrypt_worker+0x173/0x6f0 drivers/net/wireguard/receive.c:499 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3317 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3398 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff8881032f4658 of 8 bytes by interrupt on cpu 1: deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x237/0x4c0 net/can/af_can.c:607 can_receive+0x182/0x1f0 net/can/af_can.c:664 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x00000000000c741f -> 0x00000000000c7420 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ================================================================== ================================================================== BUG: KCSAN: data-race in can_receive / can_receive read-write to 0xffff888107ec2618 of 8 bytes by interrupt on cpu 0: can_receive+0x1b6/0x1f0 net/can/af_can.c:672 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read-write to 0xffff888107ec2618 of 8 bytes by interrupt on cpu 1: can_receive+0x1b6/0x1f0 net/can/af_can.c:672 can_rcv+0xe7/0x180 net/can/af_can.c:688 __netif_receive_skb_one_core net/core/dev.c:5704 [inline] __netif_receive_skb+0x123/0x280 net/core/dev.c:5817 process_backlog+0x22e/0x440 net/core/dev.c:6149 __napi_poll+0x63/0x3c0 net/core/dev.c:6902 napi_poll net/core/dev.c:6971 [inline] net_rx_action+0x3a1/0x7f0 net/core/dev.c:7093 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x00000000000f87f7 -> 0x00000000000f87f8 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================