KCSAN: data-race in can_can_gw_rcv / can_can_gw

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv can	6	4	584d	628d	0/29	auto-obsoleted due to no activity on 2024/06/14 15:49
upstream	KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv (4) can	6	9	99d	192d	0/29	auto-obsoleted due to no activity on 2025/11/02 07:50
upstream	KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv (3) can	6	4	296d	281d	0/29	auto-obsoleted due to no activity on 2025/04/19 08:20
upstream	KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv (2) can	6	1	406d	406d	0/29	auto-obsoleted due to no activity on 2024/12/30 16:15

================================================================== BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv read-write to 0xffff8881001537a0 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:6137 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6250 process_backlog+0x228/0x420 net/core/dev.c:6602 __napi_poll+0x5f/0x300 net/core/dev.c:7666 napi_poll net/core/dev.c:7729 [inline] net_rx_action+0x425/0x8c0 net/core/dev.c:7881 handle_softirqs+0xba/0x290 kernel/softirq.c:622 do_softirq+0x5d/0x90 kernel/softirq.c:523 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:450 __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_forw_packet_queue+0x141/0x170 net/batman-adv/send.c:-1 batadv_forw_packet_ogmv1_queue+0x30/0x40 net/batman-adv/send.c:716 batadv_iv_ogm_aggregate_new net/batman-adv/bat_iv_ogm.c:596 [inline] batadv_iv_ogm_queue_add+0x834/0x910 net/batman-adv/bat_iv_ogm.c:677 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:841 [inline] batadv_iv_ogm_schedule+0x513/0x810 net/batman-adv/bat_iv_ogm.c:873 batadv_iv_send_outstanding_bat_ogm_packet+0x419/0x470 net/batman-adv/bat_iv_ogm.c:1709 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3340 worker_thread+0x582/0x770 kernel/workqueue.c:3421 kthread+0x489/0x510 kernel/kthread.c:463 ret_from_fork+0x149/0x290 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 read-write to 0xffff8881001537a0 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:6137 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6250 process_backlog+0x228/0x420 net/core/dev.c:6602 __napi_poll+0x5f/0x300 net/core/dev.c:7666 napi_poll net/core/dev.c:7729 [inline] net_rx_action+0x425/0x8c0 net/core/dev.c:7881 handle_softirqs+0xba/0x290 kernel/softirq.c:622 do_softirq+0x5d/0x90 kernel/softirq.c:523 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:450 local_bh_enable include/linux/bottom_half.h:33 [inline] __alloc_skb+0x304/0x4d0 net/core/skbuff.c:674 alloc_skb include/linux/skbuff.h:1383 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:818 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:875 [inline] nsim_dev_trap_report_work+0x18a/0x630 drivers/net/netdevsim/dev.c:921 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3340 worker_thread+0x582/0x770 kernel/workqueue.c:3421 kthread+0x489/0x510 kernel/kthread.c:463 ret_from_fork+0x149/0x290 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 value changed: 0x001fe76e -> 0x001fe76f Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 2608 Comm: kworker/u8:12 Tainted: G W syzkaller #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: events_unbound nsim_dev_trap_report_work ================================================================== ================================================================== BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv read-write to 0xffff8881001537a0 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:6137 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6250 process_backlog+0x228/0x420 net/core/dev.c:6602 __napi_poll+0x5f/0x300 net/core/dev.c:7666 napi_poll net/core/dev.c:7729 [inline] net_rx_action+0x425/0x8c0 net/core/dev.c:7881 handle_softirqs+0xba/0x290 kernel/softirq.c:622 do_softirq+0x5d/0x90 kernel/softirq.c:523 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:450 __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_tt_global_purge net/batman-adv/translation-table.c:2250 [inline] batadv_tt_purge+0x2cd/0x610 net/batman-adv/translation-table.c:3510 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3340 worker_thread+0x582/0x770 kernel/workqueue.c:3421 kthread+0x489/0x510 kernel/kthread.c:463 ret_from_fork+0x149/0x290 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 read-write to 0xffff8881001537a0 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:6137 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6250 process_backlog+0x228/0x420 net/core/dev.c:6602 __napi_poll+0x5f/0x300 net/core/dev.c:7666 napi_poll net/core/dev.c:7729 [inline] net_rx_action+0x425/0x8c0 net/core/dev.c:7881 handle_softirqs+0xba/0x290 kernel/softirq.c:622 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:1063 smpboot_thread_fn+0x32b/0x530 kernel/smpboot.c:160 kthread+0x489/0x510 kernel/kthread.c:463 ret_from_fork+0x149/0x290 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 value changed: 0x002341a7 -> 0x002341a8 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 14 Comm: ksoftirqd/0 Tainted: G W syzkaller #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ================================================================== ================================================================== BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv read-write to 0xffff8881001537a0 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:6137 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6250 process_backlog+0x228/0x420 net/core/dev.c:6602 __napi_poll+0x5f/0x300 net/core/dev.c:7666 napi_poll net/core/dev.c:7729 [inline] net_rx_action+0x425/0x8c0 net/core/dev.c:7881 handle_softirqs+0xba/0x290 kernel/softirq.c:622 do_softirq+0x5d/0x90 kernel/softirq.c:523 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:450 __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_tt_global_purge net/batman-adv/translation-table.c:2250 [inline] batadv_tt_purge+0x2cd/0x610 net/batman-adv/translation-table.c:3510 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3340 worker_thread+0x582/0x770 kernel/workqueue.c:3421 kthread+0x489/0x510 kernel/kthread.c:463 ret_from_fork+0x149/0x290 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 read-write to 0xffff8881001537a0 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:6137 [inline] __netif_receive_skb+0x120/0x270 net/core/dev.c:6250 process_backlog+0x228/0x420 net/core/dev.c:6602 __napi_poll+0x5f/0x300 net/core/dev.c:7666 napi_poll net/core/dev.c:7729 [inline] net_rx_action+0x425/0x8c0 net/core/dev.c:7881 handle_softirqs+0xba/0x290 kernel/softirq.c:622 do_softirq+0x5d/0x90 kernel/softirq.c:523 __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:450 local_bh_enable include/linux/bottom_half.h:33 [inline] __alloc_skb+0x49b/0x4d0 net/core/skbuff.c:674 alloc_skb include/linux/skbuff.h:1383 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:818 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:875 [inline] nsim_dev_trap_report_work+0x18a/0x630 drivers/net/netdevsim/dev.c:921 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3340 worker_thread+0x582/0x770 kernel/workqueue.c:3421 kthread+0x489/0x510 kernel/kthread.c:463 ret_from_fork+0x149/0x290 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 value changed: 0x002e4cd1 -> 0x002e4cd2 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 4679 Comm: kworker/u8:42 Tainted: G W syzkaller #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: events_unbound nsim_dev_trap_report_work ==================================================================

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2025/12/15 04:16	upstream	8f0b4cce4481	d6526ea3	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-kcsan-gce	KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv

Crashes (1):

Assets (help?)