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================================================================== BUG: KCSAN: data-race in tcp_event_new_data_sent / tcp_stream_memory_free write to 0xffff888126af05c4 of 4 bytes by interrupt on cpu 1: tcp_event_new_data_sent+0x5f/0x1c0 net/ipv4/tcp_output.c:70 tcp_write_xmit+0xa16/0x3080 net/ipv4/tcp_output.c:2447 __tcp_push_pending_frames+0x7b/0x1d0 net/ipv4/tcp_output.c:2616 tcp_push_pending_frames include/net/tcp.h:1809 [inline] tcp_data_snd_check net/ipv4/tcp_input.c:5215 [inline] tcp_rcv_established+0x56a/0xf50 net/ipv4/tcp_input.c:5707 tcp_v4_do_rcv+0x381/0x4e0 net/ipv4/tcp_ipv4.c:1561 tcp_v4_rcv+0x19dc/0x1bb0 net/ipv4/tcp_ipv4.c:1942 ip_protocol_deliver_rcu+0x4d/0x420 net/ipv4/ip_input.c:204 ip_local_deliver_finish+0x110/0x140 net/ipv4/ip_input.c:231 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip_local_deliver+0x133/0x210 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:442 [inline] ip_rcv_finish+0x121/0x160 net/ipv4/ip_input.c:413 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip_rcv+0x18f/0x1a0 net/ipv4/ip_input.c:523 __netif_receive_skb_one_core+0xa7/0xe0 net/core/dev.c:5010 __netif_receive_skb+0x37/0xf0 net/core/dev.c:5124 netif_receive_skb_internal+0x59/0x190 net/core/dev.c:5214 read to 0xffff888126af05c4 of 4 bytes by task 7312 on cpu 0: tcp_stream_memory_free+0x3c/0xc0 include/net/tcp.h:1919 __sk_stream_memory_free include/net/sock.h:1214 [inline] __sk_stream_memory_free include/net/sock.h:1208 [inline] __sk_stream_is_writeable include/net/sock.h:1225 [inline] sk_stream_is_writeable include/net/sock.h:1230 [inline] tcp_poll+0x49a/0x6b0 net/ipv4/tcp.c:558 sock_poll+0xed/0x250 net/socket.c:1256 vfs_poll include/linux/poll.h:90 [inline] do_select+0x7d0/0x1020 fs/select.c:534 core_sys_select+0x381/0x550 fs/select.c:677 kern_select+0x106/0x170 fs/select.c:718 __do_sys_select fs/select.c:725 [inline] __se_sys_select fs/select.c:722 [inline] __x64_sys_select+0x70/0x90 fs/select.c:722 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: 7312 Comm: sshd Not tainted 5.4.0-rc3+ #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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/11/03 02:26 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | d603afc9 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/03 02:01 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | d603afc9 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/28 18:36 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | 439d7b14 | .config | console log | report | ci2-upstream-kcsan-gce |