==================================================================
BUG: KCSAN: data-race in can_send / can_send

read-write to 0xffff888116df6a90 of 8 bytes by interrupt on cpu 0:
 can_send+0x55c/0x5d0 net/can/af_can.c:289
 can_can_gw_rcv+0x77b/0x7e0 net/can/gw.c:561
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 __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]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
 nsim_dev_trap_report_work+0x4d5/0x5b0 drivers/net/netdevsim/dev.c:850
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 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 0xffff888116df6a90 of 8 bytes by interrupt on cpu 1:
 can_send+0x55c/0x5d0 net/can/af_can.c:289
 can_can_gw_rcv+0x77b/0x7e0 net/can/gw.c:561
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 run_ksoftirqd+0x17/0x30 kernel/softirq.c:924
 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164
 kthread+0x1d1/0x210 kernel/kthread.c:388
 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: 0x000000000062029e -> 0x000000000062029f

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 22 Comm: ksoftirqd/1 Tainted: G        W          6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
==================================================================
==================================================================
BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv

read-write to 0xffff88815aa00020 of 4 bytes by interrupt on cpu 0:
 can_can_gw_rcv+0x7c9/0x7e0 net/can/gw.c:564
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 __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]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
 nsim_dev_trap_report_work+0x4d5/0x5b0 drivers/net/netdevsim/dev.c:850
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 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 0xffff88815aa00020 of 4 bytes by interrupt on cpu 1:
 can_can_gw_rcv+0x7c9/0x7e0 net/can/gw.c:564
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 __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]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
 nsim_dev_trap_report_work+0x4d5/0x5b0 drivers/net/netdevsim/dev.c:850
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 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: 0x0062dc09 -> 0x0062dc0a

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 8267 Comm: kworker/1:6 Tainted: G        W          6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events nsim_dev_trap_report_work
==================================================================
==================================================================
BUG: KCSAN: data-race in can_send / can_send

read-write to 0xffff888116df6af0 of 8 bytes by interrupt on cpu 0:
 can_send+0x570/0x5d0 net/can/af_can.c:290
 can_can_gw_rcv+0x77b/0x7e0 net/can/gw.c:561
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 __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+0x21d/0x270 net/batman-adv/network-coding.c:471
 batadv_nc_worker+0x402/0xac0 net/batman-adv/network-coding.c:722
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 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 0xffff888116df6af0 of 8 bytes by interrupt on cpu 1:
 can_send+0x570/0x5d0 net/can/af_can.c:290
 can_can_gw_rcv+0x77b/0x7e0 net/can/gw.c:561
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 run_ksoftirqd+0x17/0x30 kernel/softirq.c:924
 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164
 kthread+0x1d1/0x210 kernel/kthread.c:388
 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: 0x0000000000000b5c -> 0x0000000000000b5d

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 22 Comm: ksoftirqd/1 Tainted: G        W          6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
==================================================================
==================================================================
BUG: KCSAN: data-race in can_send / can_send

read-write to 0xffff888116df6af0 of 8 bytes by interrupt on cpu 0:
 can_send+0x570/0x5d0 net/can/af_can.c:290
 can_can_gw_rcv+0x77b/0x7e0 net/can/gw.c:561
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 __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+0x21d/0x270 net/batman-adv/network-coding.c:471
 batadv_nc_worker+0x3db/0xac0 net/batman-adv/network-coding.c:720
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 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 0xffff888116df6af0 of 8 bytes by interrupt on cpu 1:
 can_send+0x570/0x5d0 net/can/af_can.c:290
 can_can_gw_rcv+0x77b/0x7e0 net/can/gw.c:561
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 __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]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
 nsim_dev_trap_report_work+0x4d5/0x5b0 drivers/net/netdevsim/dev.c:850
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 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: 0x000000000000e450 -> 0x000000000000e451

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3181 Comm: kworker/1:5 Tainted: G        W          6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events nsim_dev_trap_report_work
==================================================================
==================================================================
BUG: KCSAN: data-race in can_can_gw_rcv / can_can_gw_rcv

read-write to 0xffff88815aa00020 of 4 bytes by interrupt on cpu 0:
 can_can_gw_rcv+0x7c9/0x7e0 net/can/gw.c:564
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 __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_dat_purge net/batman-adv/distributed-arp-table.c:186 [inline]
 batadv_dat_purge+0x1dd/0x260 net/batman-adv/distributed-arp-table.c:205
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 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 0xffff88815aa00020 of 4 bytes by interrupt on cpu 1:
 can_can_gw_rcv+0x7c9/0x7e0 net/can/gw.c:564
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 run_ksoftirqd+0x17/0x30 kernel/softirq.c:924
 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164
 kthread+0x1d1/0x210 kernel/kthread.c:388
 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: 0x006e46c7 -> 0x006e46c8

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 22 Comm: ksoftirqd/1 Tainted: G        W          6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
==================================================================
==================================================================
BUG: KCSAN: data-race in can_send / can_send

read-write to 0xffff888116df6a90 of 8 bytes by interrupt on cpu 0:
 can_send+0x55c/0x5d0 net/can/af_can.c:289
 can_can_gw_rcv+0x77b/0x7e0 net/can/gw.c:561
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 __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:2299 [inline]
 batadv_tt_purge+0x2e5/0x630 net/batman-adv/translation-table.c:3561
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 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 0xffff888116df6a90 of 8 bytes by interrupt on cpu 1:
 can_send+0x55c/0x5d0 net/can/af_can.c:289
 can_can_gw_rcv+0x77b/0x7e0 net/can/gw.c:561
 deliver net/can/af_can.c:572 [inline]
 can_rcv_filter+0xbf/0x4c0 net/can/af_can.c:599
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 can_rcv+0xe7/0x180 net/can/af_can.c:687
 __netif_receive_skb_one_core net/core/dev.c:5544 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5658
 process_backlog+0x21f/0x380 net/core/dev.c:5987
 __napi_poll+0x63/0x3c0 net/core/dev.c:6638
 napi_poll net/core/dev.c:6707 [inline]
 net_rx_action+0x324/0x720 net/core/dev.c:6822
 __do_softirq+0xc8/0x285 kernel/softirq.c:554
 do_softirq+0x5e/0x90 kernel/softirq.c:455
 __local_bh_enable_ip+0x6e/0x70 kernel/softirq.c:382
 __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]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
 nsim_dev_trap_report_work+0x4d5/0x5b0 drivers/net/netdevsim/dev.c:850
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416