syzbot

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BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter

read-write to 0xffff888101aba1a8 of 8 bytes by interrupt on cpu 0:
 deliver net/can/af_can.c:573 [inline]
 can_rcv_filter+0x237/0x4c0 net/can/af_can.c:606
 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:5624 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5738
 process_backlog+0x21d/0x3c0 net/core/dev.c:6067
 __napi_poll+0x63/0x3c0 net/core/dev.c:6721
 napi_poll net/core/dev.c:6790 [inline]
 net_rx_action+0x324/0x740 net/core/dev.c:6906
 handle_softirqs+0xc3/0x280 kernel/softirq.c:554
 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:928
 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 0xffff888101aba1a8 of 8 bytes by interrupt on cpu 1:
 deliver net/can/af_can.c:573 [inline]
 can_rcv_filter+0x237/0x4c0 net/can/af_can.c:606
 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:5624 [inline]
 __netif_receive_skb+0x123/0x280 net/core/dev.c:5738
 process_backlog+0x21d/0x3c0 net/core/dev.c:6067
 __napi_poll+0x63/0x3c0 net/core/dev.c:6721
 napi_poll net/core/dev.c:6790 [inline]
 net_rx_action+0x324/0x740 net/core/dev.c:6906
 handle_softirqs+0xc3/0x280 kernel/softirq.c:554
 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:928
 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: 0x000000000000013a -> 0x000000000000013b

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 23 Comm: ksoftirqd/1 Not tainted 6.9.0-syzkaller-12333-g54f71b0369c9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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