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================================================================== BUG: KCSAN: data-race in skb_dequeue / unix_dgram_poll write to 0xffff888124678ce0 of 4 bytes by task 10068 on cpu 1: __skb_unlink include/linux/skbuff.h:2022 [inline] __skb_dequeue include/linux/skbuff.h:2042 [inline] skb_dequeue+0x84/0x150 net/core/skbuff.c:3040 skb_queue_purge+0x2f/0x50 net/core/skbuff.c:3077 unix_dgram_disconnected+0x42/0xe0 net/unix/af_unix.c:472 unix_dgram_connect+0x419/0x5a0 net/unix/af_unix.c:1174 __sys_connect_file+0xf4/0x100 net/socket.c:1844 __sys_connect+0x121/0x150 net/socket.c:1861 __do_sys_connect net/socket.c:1872 [inline] __se_sys_connect net/socket.c:1869 [inline] __x64_sys_connect+0x4c/0x60 net/socket.c:1869 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888124678ce0 of 4 bytes by task 10063 on cpu 0: unix_recvq_full net/unix/af_unix.c:194 [inline] unix_dgram_poll+0x2ea/0x410 net/unix/af_unix.c:2680 sock_poll+0xed/0x250 net/socket.c:1258 vfs_poll include/linux/poll.h:90 [inline] ep_item_poll.isra.0+0x90/0x190 fs/eventpoll.c:871 ep_send_events_proc+0x113/0x590 fs/eventpoll.c:1728 ep_scan_ready_list.constprop.0+0x189/0x410 fs/eventpoll.c:698 ep_send_events fs/eventpoll.c:1772 [inline] ep_poll+0xe3/0x900 fs/eventpoll.c:1909 do_epoll_wait+0x162/0x180 fs/eventpoll.c:2273 __do_sys_epoll_wait fs/eventpoll.c:2283 [inline] __se_sys_epoll_wait fs/eventpoll.c:2280 [inline] __x64_sys_epoll_wait+0x5e/0x80 fs/eventpoll.c:2280 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 10063 Comm: syz-executor.3 Not tainted 5.5.0-rc1-syzkaller #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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/01/27 15:10 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 56cd6c9b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/24 16:25 | https://github.com/google/ktsan.git kcsan | 245a43005292 | be5c2c81 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/21 02:32 | https://github.com/google/ktsan.git kcsan | 245a43005292 | bc586918 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/19 15:26 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 36650b4b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/11 20:04 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 0d368675 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/09 14:29 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | b31eda3d | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/12/03 22:12 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 0ecb9746 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/29 00:33 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 76357d6f | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/19 11:24 | https://github.com/google/ktsan.git kcsan | 5863cc791e4c | 432c7650 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/13 12:27 | https://github.com/google/ktsan.git kcsan | 7f2955e0d056 | 048f2d49 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/03 11:45 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | c9610487 | .config | console log | report | ci2-upstream-kcsan-gce |