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================================================================== BUG: KCSAN: data-race in __skb_wait_for_more_packets / l2cap_sock_shutdown write to 0xffff888124407e6a of 1 bytes by task 29786 on cpu 1: l2cap_sock_shutdown+0x1ae/0x680 net/bluetooth/l2cap_sock.c:1147 __sys_shutdown+0xa2/0x130 net/socket.c:2160 __do_sys_shutdown net/socket.c:2168 [inline] __se_sys_shutdown net/socket.c:2166 [inline] __x64_sys_shutdown+0x3a/0x50 net/socket.c:2166 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888124407e6a of 1 bytes by task 29789 on cpu 0: __skb_wait_for_more_packets+0x17e/0x330 net/core/datagram.c:104 __skb_recv_datagram+0xf0/0x160 net/core/datagram.c:310 skb_recv_datagram+0x76/0xb0 net/core/datagram.c:321 bt_sock_recvmsg+0x7e/0x3f0 net/bluetooth/af_bluetooth.c:266 l2cap_sock_recvmsg+0xc9/0x370 net/bluetooth/l2cap_sock.c:1013 sock_recvmsg_nosec net/socket.c:871 [inline] sock_recvmsg net/socket.c:889 [inline] sock_recvmsg+0x92/0xb0 net/socket.c:885 ___sys_recvmsg+0x1a0/0x3e0 net/socket.c:2480 do_recvmmsg+0x19a/0x5c0 net/socket.c:2601 __sys_recvmmsg+0x1ef/0x200 net/socket.c:2680 __do_sys_recvmmsg net/socket.c:2703 [inline] __se_sys_recvmmsg net/socket.c:2696 [inline] __x64_sys_recvmmsg+0x89/0xb0 net/socket.c:2696 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 29789 Comm: syz-executor.3 Not tainted 5.4.0-rc6+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/11/05 13:50 | https://github.com/google/ktsan.git kcsan | 94c006602e13 | 0f3ec414 | .config | console log | report | ci2-upstream-kcsan-gce |