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| ID | Workflow | Result | Correct | Bug | Created | Started | Finished | Revision | Error |
|---|---|---|---|---|---|---|---|---|---|
| bd67dbc0-69b2-41ae-a8b9-703582f579e8 | assessment-security | DenialOfService: ❌ Exploitable: ✅ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ✅ VMGuestTrigger: ❌ VMHostTrigger: ❌ | ❓ | KMSAN: uninit-value in __fl_lookup (3) | 2026/06/02 13:00 | 2026/06/02 13:00 | 2026/06/02 13:52 | 1095583bae1d2729a3b4be301cb6ddc85ced9e38 |
| Title | Replies (including bot) | Last reply |
|---|---|---|
| [PATCH v2] flow_dissector: fix uninit-value in __skb_flow_dissect() for ETH_ADDRS | 1 (1) | 2026/06/09 02:37 |
| [PATCH] flow_dissector: fix uninit-value in __skb_flow_dissect() for ETH_ADDRS | 7 (7) | 2026/06/08 01:30 |
| [PATCH] net/sched: cls_flower: reject ETH_ADDRS match on devices without L2 header | 1 (1) | 2026/06/03 10:11 |
| [syzbot] [net?] KMSAN: uninit-value in __fl_lookup (3) | 0 (1) | 2026/05/29 10:51 |
| Kernel | Title | Rank 🛈 | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| upstream | KMSAN: uninit-value in __fl_lookup net | 7 | 2 | 144d | 144d | 0/29 | closed as invalid on 2026/02/18 04:33 | |||
| upstream | KMSAN: uninit-value in __fl_lookup (2) net | 7 | C | 6 | 74d | 109d | 0/29 | closed as invalid on 2026/04/30 15:35 |
syzkaller0: entered promiscuous mode syzkaller0: entered allmulticast mode ===================================================== BUG: KMSAN: uninit-value in __rht_ptr_rcu include/linux/rhashtable.h:388 [inline] BUG: KMSAN: uninit-value in __rhashtable_lookup include/linux/rhashtable.h:631 [inline] BUG: KMSAN: uninit-value in rhashtable_lookup include/linux/rhashtable.h:671 [inline] BUG: KMSAN: uninit-value in rhashtable_lookup_fast include/linux/rhashtable.h:709 [inline] BUG: KMSAN: uninit-value in __fl_lookup+0x6ce/0x940 net/sched/cls_flower.c:269 __rht_ptr_rcu include/linux/rhashtable.h:388 [inline] __rhashtable_lookup include/linux/rhashtable.h:631 [inline] rhashtable_lookup include/linux/rhashtable.h:671 [inline] rhashtable_lookup_fast include/linux/rhashtable.h:709 [inline] __fl_lookup+0x6ce/0x940 net/sched/cls_flower.c:269 fl_mask_lookup+0x305/0xd60 net/sched/cls_flower.c:302 fl_classify+0x36b/0x780 net/sched/cls_flower.c:349 tc_classify include/net/tc_wrapper.h:198 [inline] __tcf_classify net/sched/cls_api.c:1764 [inline] tcf_classify+0x855/0x1ca0 net/sched/cls_api.c:1860 multiq_classify net/sched/sch_multiq.c:39 [inline] multiq_enqueue+0x82/0x5a0 net/sched/sch_multiq.c:66 dev_qdisc_enqueue net/core/dev.c:4174 [inline] __dev_xmit_skb net/core/dev.c:4289 [inline] __dev_queue_xmit+0x23c3/0x5a00 net/core/dev.c:4831 dev_queue_xmit include/linux/netdevice.h:3418 [inline] packet_xmit+0x8f/0x710 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3082 [inline] packet_sendmsg+0x8c6b/0x9d60 net/packet/af_packet.c:3114 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0xf37/0xfd0 net/socket.c:2698 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2787 x64_sys_call+0x1e20/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x134/0x390 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: fl_set_masked_key net/sched/cls_flower.c:194 [inline] fl_mask_lookup+0x254/0xd60 net/sched/cls_flower.c:298 fl_classify+0x36b/0x780 net/sched/cls_flower.c:349 tc_classify include/net/tc_wrapper.h:198 [inline] __tcf_classify net/sched/cls_api.c:1764 [inline] tcf_classify+0x855/0x1ca0 net/sched/cls_api.c:1860 multiq_classify net/sched/sch_multiq.c:39 [inline] multiq_enqueue+0x82/0x5a0 net/sched/sch_multiq.c:66 dev_qdisc_enqueue net/core/dev.c:4174 [inline] __dev_xmit_skb net/core/dev.c:4289 [inline] __dev_queue_xmit+0x23c3/0x5a00 net/core/dev.c:4831 dev_queue_xmit include/linux/netdevice.h:3418 [inline] packet_xmit+0x8f/0x710 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3082 [inline] packet_sendmsg+0x8c6b/0x9d60 net/packet/af_packet.c:3114 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0xf37/0xfd0 net/socket.c:2698 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2787 x64_sys_call+0x1e20/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x134/0x390 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: __skb_flow_dissect+0xfdb/0xa060 net/core/flow_dissector.c:1182 skb_flow_dissect include/linux/skbuff.h:1603 [inline] fl_classify+0x349/0x780 net/sched/cls_flower.c:346 tc_classify include/net/tc_wrapper.h:198 [inline] __tcf_classify net/sched/cls_api.c:1764 [inline] tcf_classify+0x855/0x1ca0 net/sched/cls_api.c:1860 multiq_classify net/sched/sch_multiq.c:39 [inline] multiq_enqueue+0x82/0x5a0 net/sched/sch_multiq.c:66 dev_qdisc_enqueue net/core/dev.c:4174 [inline] __dev_xmit_skb net/core/dev.c:4289 [inline] __dev_queue_xmit+0x23c3/0x5a00 net/core/dev.c:4831 dev_queue_xmit include/linux/netdevice.h:3418 [inline] packet_xmit+0x8f/0x710 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3082 [inline] packet_sendmsg+0x8c6b/0x9d60 net/packet/af_packet.c:3114 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0xf37/0xfd0 net/socket.c:2698 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2787 x64_sys_call+0x1e20/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x134/0x390 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4577 [inline] slab_alloc_node mm/slub.c:4899 [inline] kmem_cache_alloc_node_noprof+0x3cd/0x12c0 mm/slub.c:4951 kmalloc_reserve net/core/skbuff.c:613 [inline] __alloc_skb+0x855/0x1190 net/core/skbuff.c:713 alloc_skb include/linux/skbuff.h:1383 [inline] alloc_skb_with_frags+0xc5/0x990 net/core/skbuff.c:6743 sock_alloc_send_pskb+0xacb/0xc60 net/core/sock.c:2998 packet_alloc_skb net/packet/af_packet.c:2932 [inline] packet_snd net/packet/af_packet.c:3025 [inline] packet_sendmsg+0x6ed5/0x9d60 net/packet/af_packet.c:3114 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0xf37/0xfd0 net/socket.c:2698 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2787 x64_sys_call+0x1e20/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x134/0x390 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 13869 Comm: syz.9.1335 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 =====================================================
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026/05/25 10:46 | upstream | 6a97c4d5262d | c69befb3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kmsan-gce-root | KMSAN: uninit-value in __fl_lookup |