syzbot |
sign-in | mailing list | source | docs |
================================================================== BUG: KCSAN: data-race in udp_set_dev_scratch / udpv6_recvmsg write to 0xffff888123b5c314 of 2 bytes by task 13972 on cpu 1: udp_set_dev_scratch+0x61/0x200 net/ipv4/udp.c:1307 __first_packet_length+0x147/0x420 net/ipv4/udp.c:1556 first_packet_length+0x68/0x2a0 net/ipv4/udp.c:1579 udp_poll+0xea/0x110 net/ipv4/udp.c:2720 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 do_pselect.constprop.0+0x11d/0x160 fs/select.c:759 __do_sys_pselect6 fs/select.c:784 [inline] __se_sys_pselect6 fs/select.c:769 [inline] __x64_sys_pselect6+0x12e/0x170 fs/select.c:769 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888123b5c314 of 2 bytes by task 13971 on cpu 0: udp_skb_len include/net/udp.h:353 [inline] udp6_skb_len net/ipv6/udp.c:259 [inline] udpv6_recvmsg+0x2ed/0xe90 net/ipv6/udp.c:292 inet6_recvmsg+0xbb/0x240 net/ipv6/af_inet6.c:592 sock_recvmsg_nosec+0x5c/0x70 net/socket.c:871 ___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: 13971 Comm: syz-executor.3 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/11/04 02:22 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | b35fad31 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/03 06:45 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | d603afc9 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/29 18:18 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | 5ea87a66 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/23 20:01 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | b602d64b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/23 13:08 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | d0686497 | .config | console log | report | ci2-upstream-kcsan-gce |