syzbot |
sign-in | mailing list | source | docs |
🐞 Open [981] ≡ Subsystems 🐞 Fixed [5235] 🐞 Invalid [12495] ⬇ Missing Backports [83] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes | 💬 Send us feedback |
================================================================== BUG: KCSAN: data-race in ip6_tnl_start_xmit / ip6_tnl_start_xmit read-write to 0xffff88813a5a3168 of 8 bytes by task 6449 on cpu 1: ip6_tnl_start_xmit+0x883/0xa90 net/ipv6/ip6_tunnel.c:1442 __netdev_start_xmit include/linux/netdevice.h:4840 [inline] netdev_start_xmit include/linux/netdevice.h:4854 [inline] xmit_one+0xc0/0x2a0 net/core/dev.c:3590 dev_hard_start_xmit+0x72/0x120 net/core/dev.c:3606 __dev_queue_xmit+0x91c/0x11c0 net/core/dev.c:4256 dev_queue_xmit include/linux/netdevice.h:3008 [inline] __bpf_tx_skb net/core/filter.c:2116 [inline] __bpf_redirect_no_mac net/core/filter.c:2141 [inline] __bpf_redirect+0x52b/0x8f0 net/core/filter.c:2164 ____bpf_clone_redirect net/core/filter.c:2431 [inline] bpf_clone_redirect+0x168/0x1c0 net/core/filter.c:2403 ___bpf_prog_run+0x278/0x2da0 kernel/bpf/core.c:1818 __bpf_prog_run512+0x70/0xa0 kernel/bpf/core.c:2043 bpf_dispatcher_nop_func include/linux/bpf.h:968 [inline] __bpf_prog_run include/linux/filter.h:600 [inline] bpf_prog_run include/linux/filter.h:607 [inline] bpf_test_run+0x1eb/0x410 net/bpf/test_run.c:402 bpf_prog_test_run_skb+0x76b/0x9f0 net/bpf/test_run.c:1183 bpf_prog_test_run+0x22a/0x250 kernel/bpf/syscall.c:3630 __sys_bpf+0x38a/0x630 kernel/bpf/syscall.c:4983 __do_sys_bpf kernel/bpf/syscall.c:5069 [inline] __se_sys_bpf kernel/bpf/syscall.c:5067 [inline] __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:5067 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read-write to 0xffff88813a5a3168 of 8 bytes by task 6459 on cpu 0: ip6_tnl_start_xmit+0x883/0xa90 net/ipv6/ip6_tunnel.c:1442 __netdev_start_xmit include/linux/netdevice.h:4840 [inline] netdev_start_xmit include/linux/netdevice.h:4854 [inline] xmit_one+0xc0/0x2a0 net/core/dev.c:3590 dev_hard_start_xmit+0x72/0x120 net/core/dev.c:3606 __dev_queue_xmit+0x91c/0x11c0 net/core/dev.c:4256 dev_queue_xmit include/linux/netdevice.h:3008 [inline] __bpf_tx_skb net/core/filter.c:2116 [inline] __bpf_redirect_no_mac net/core/filter.c:2141 [inline] __bpf_redirect+0x52b/0x8f0 net/core/filter.c:2164 ____bpf_clone_redirect net/core/filter.c:2431 [inline] bpf_clone_redirect+0x168/0x1c0 net/core/filter.c:2403 ___bpf_prog_run+0x278/0x2da0 kernel/bpf/core.c:1818 __bpf_prog_run512+0x70/0xa0 kernel/bpf/core.c:2043 bpf_dispatcher_nop_func include/linux/bpf.h:968 [inline] __bpf_prog_run include/linux/filter.h:600 [inline] bpf_prog_run include/linux/filter.h:607 [inline] bpf_test_run+0x1eb/0x410 net/bpf/test_run.c:402 bpf_prog_test_run_skb+0x76b/0x9f0 net/bpf/test_run.c:1183 bpf_prog_test_run+0x22a/0x250 kernel/bpf/syscall.c:3630 __sys_bpf+0x38a/0x630 kernel/bpf/syscall.c:4983 __do_sys_bpf kernel/bpf/syscall.c:5069 [inline] __se_sys_bpf kernel/bpf/syscall.c:5067 [inline] __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:5067 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x00000000000004ec -> 0x00000000000004ef Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6459 Comm: syz-executor.3 Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2022/12/06 16:33 | upstream | bce9332220bd | 045cbb84 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in ip6_tnl_start_xmit / ip6_tnl_start_xmit | ||
2022/12/03 05:07 | upstream | a4412fdd49dc | e080de16 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in ip6_tnl_start_xmit / ip6_tnl_start_xmit | ||
2022/11/13 08:07 | upstream | fef7fd48922d | f42ee5d8 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in ip6_tnl_start_xmit / ip6_tnl_start_xmit |