syzbot


KCSAN: data-race in can_receive / can_receive (3)

Status: auto-obsoleted due to no activity on 2023/10/06 05:46
Subsystems: can
[Documentation on labels]
Reported-by: syzbot+ed5906c7292193a70bc4@syzkaller.appspotmail.com
First crash: 905d, last: 254d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in can_receive / can_receive (2) can 3 1166d 1208d 0/26 auto-closed as invalid on 2021/04/13 21:26
upstream KCSAN: data-race in can_receive / can_receive can 9 1576d 1645d 0/26 auto-closed as invalid on 2020/04/04 02:54

Sample crash report:
==================================================================
BUG: KCSAN: data-race in can_receive / can_receive

read-write to 0xffff888132a2f608 of 8 bytes by interrupt on cpu 0:
 can_receive+0x4e/0x1f0 net/can/af_can.c:649
 canfd_rcv+0xe7/0x180 net/can/af_can.c:702
 __netif_receive_skb_one_core net/core/dev.c:5523 [inline]
 __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5637
 process_backlog+0x21f/0x380 net/core/dev.c:5965
 __napi_poll+0x60/0x3b0 net/core/dev.c:6527
 napi_poll net/core/dev.c:6594 [inline]
 net_rx_action+0x32b/0x750 net/core/dev.c:6727
 __do_softirq+0xc1/0x265 kernel/softirq.c:553
 run_ksoftirqd+0x17/0x20 kernel/softirq.c:921
 smpboot_thread_fn+0x30a/0x4a0 kernel/smpboot.c:164
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

read-write to 0xffff888132a2f608 of 8 bytes by interrupt on cpu 1:
 can_receive+0x4e/0x1f0 net/can/af_can.c:649
 canfd_rcv+0xe7/0x180 net/can/af_can.c:702
 __netif_receive_skb_one_core net/core/dev.c:5523 [inline]
 __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5637
 process_backlog+0x21f/0x380 net/core/dev.c:5965
 __napi_poll+0x60/0x3b0 net/core/dev.c:6527
 napi_poll net/core/dev.c:6594 [inline]
 net_rx_action+0x32b/0x750 net/core/dev.c:6727
 __do_softirq+0xc1/0x265 kernel/softirq.c:553
 do_softirq+0x5e/0x90 kernel/softirq.c:454
 __local_bh_enable_ip+0x64/0x70 kernel/softirq.c:381
 __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]
 release_sock+0x108/0x110 net/core/sock.c:3530
 dccp_close+0x807/0x9c0 net/dccp/proto.c:1062
 inet_release+0xc9/0xf0 net/ipv4/af_inet.c:433
 __sock_release net/socket.c:659 [inline]
 sock_close+0x64/0x140 net/socket.c:1401
 __fput+0x2fd/0x5f0 fs/file_table.c:384
 ____fput+0x15/0x20 fs/file_table.c:412
 task_work_run+0x135/0x1a0 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x5ff/0x1660 kernel/exit.c:874
 do_group_exit+0x141/0x150 kernel/exit.c:1024
 __do_sys_exit_group kernel/exit.c:1035 [inline]
 __se_sys_exit_group kernel/exit.c:1033 [inline]
 __x64_sys_exit_group+0x1f/0x20 kernel/exit.c:1033
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x0000000000022cbd -> 0x0000000000022cbe

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 9933 Comm: syz-executor.0 Not tainted 6.5.0-syzkaller-12145-g4a0fc73da97e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
==================================================================

Crashes (1236):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/09/08 05:46 upstream 4a0fc73da97e 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/09/06 17:05 upstream 65d6e954e378 0b6286dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/08/29 08:06 upstream 727dbda16b83 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/08/28 11:01 upstream 2dde18cd1d8f 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/08/26 11:41 upstream 382d4cd18475 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/08/23 13:15 upstream 89bf6209cad6 b81ca3f6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/08/16 22:04 upstream 4853c74bd7ab 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/08/13 13:52 upstream a785fd28d31f 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/08/12 02:41 upstream 9106536c1aa3 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/08/07 15:13 upstream 52a93d39b17d b1b6ae3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/08/07 01:21 upstream f0ab9f34e59e 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/08/03 14:45 upstream ec351c8f2e62 39a91c18 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/31 07:33 upstream 5d0c230f1de8 2a0d0f29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/29 14:56 upstream ffabf7c73176 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/25 10:51 upstream 0b5547c51827 3b91ad04 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/20 18:20 upstream 46670259519f f49af159 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/18 14:05 upstream fdf0eaf11452 022df2bb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/15 11:55 upstream b6e6cc1f78c7 35d9ecc5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/11 20:40 upstream 3f01e9fed845 2f19aa4f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/11 00:34 upstream 3f01e9fed845 d47e94ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/08 00:16 upstream 5133c9e51de4 668cb1fa .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/07 08:44 upstream a452483508d7 22ae5830 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/06 13:52 upstream c17414a273b8 1a2f6297 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/05 18:28 upstream d528014517f2 ba5dba36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/05 03:54 upstream d528014517f2 80298b6f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/04 14:24 upstream 24be4d0b46bb f99c2404 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/04 10:46 upstream 24be4d0b46bb 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/03 20:06 upstream 99bdeae21d25 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/03 15:42 upstream a901a3568fd2 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/03 06:00 upstream a901a3568fd2 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/02 16:17 upstream 995b406c7e97 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/02 02:01 upstream dfab92f27c60 bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/01 11:08 upstream d85a143b69ab bfc47836 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/01 06:44 upstream d85a143b69ab af3053d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/07/01 06:43 upstream d85a143b69ab af3053d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/30 16:11 upstream e55e5df193d2 af3053d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/30 14:52 upstream e55e5df193d2 01298212 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/30 01:03 upstream c6b0271053e7 01298212 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/29 08:30 upstream 3a8a670eeeaa ca69c785 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/28 17:49 upstream 6aeadf7896bf ca69c785 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/28 13:04 upstream 6aeadf7896bf 4cd5bb25 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/27 21:30 upstream 04fc8904d5d1 4cd5bb25 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/27 07:51 upstream 1ef6663a587b 4cd5bb25 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/26 18:31 upstream c0a572d9d32f 4cd5bb25 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/26 15:01 upstream 6995e2de6891 4cd5bb25 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/26 08:42 upstream 6995e2de6891 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2023/06/25 18:33 upstream 547cc9be86f4 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2022/04/15 16:41 upstream 028192fea1de 8bcc32a6 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2022/04/15 13:17 upstream b9b4c79e5830 b17b2923 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
2021/11/25 14:00 upstream 5f53fa508db0 545ab074 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in can_receive / can_receive
* Struck through repros no longer work on HEAD.