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================================================================== BUG: KCSAN: data-race in ipv6_setsockopt / udpv6_recvmsg write to 0xffff88811ec39f6c of 2 bytes by task 612 on cpu 1: do_ipv6_setsockopt net/ipv6/ipv6_sockglue.c:649 [inline] ipv6_setsockopt+0x1b22/0x3710 net/ipv6/ipv6_sockglue.c:1003 udpv6_setsockopt+0x85/0x90 net/ipv6/udp.c:1626 sock_common_setsockopt+0x5d/0x70 net/core/sock.c:3247 __sys_setsockopt+0x2dc/0x450 net/socket.c:2132 __do_sys_setsockopt net/socket.c:2143 [inline] __se_sys_setsockopt net/socket.c:2140 [inline] __x64_sys_setsockopt+0x62/0x70 net/socket.c:2140 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88811ec39f6c of 2 bytes by task 608 on cpu 0: udpv6_recvmsg+0xa44/0xc50 net/ipv6/udp.c:421 inet6_recvmsg+0xa3/0x210 net/ipv6/af_inet6.c:654 ____sys_recvmsg+0x15a/0x2e0 include/linux/uio.h:234 ___sys_recvmsg net/socket.c:2618 [inline] do_recvmmsg+0x35c/0xa30 net/socket.c:2716 __sys_recvmmsg net/socket.c:2795 [inline] __do_sys_recvmmsg net/socket.c:2818 [inline] __se_sys_recvmmsg net/socket.c:2811 [inline] __x64_sys_recvmmsg+0xcc/0x150 net/socket.c:2811 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 608 Comm: syz-executor.5 Not tainted 5.8.0-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/08/16 17:52 | upstream | 4b6c093e21d3 | 5ce13532 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/08/16 17:49 | upstream | 4b6c093e21d3 | 5ce13532 | .config | console log | report | ci2-upstream-kcsan-gce |