| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2024/05/02 | linux-6.1.y (ToT) | 909ba1f1b414 | C | [report] WARNING in subflow_data_ready |
| 2024/05/02 | upstream (ToT) | 49a73b1652c5 | C | Didn't crash |
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| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2024/05/02 | linux-6.1.y (ToT) | 909ba1f1b414 | C | [report] WARNING in subflow_data_ready |
| 2024/05/02 | upstream (ToT) | 49a73b1652c5 | C | Didn't crash |
| Kernel | Title | Rank 🛈 | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| upstream | WARNING in subflow_data_ready mptcp | -1 | 42 | 743d | 828d | 25/29 | fixed on 2024/01/20 21:18 | |||
| upstream | WARNING in subflow_data_ready (3) mptcp | -1 | 1 | 244d | 244d | 0/29 | closed as invalid on 2025/06/27 12:28 | |||
| upstream | WARNING in subflow_data_ready (2) mptcp | -1 | C | done | 9 | 719d | 737d | 0/29 | auto-obsoleted due to no activity on 2024/05/21 09:30 | |
| upstream | WARNING in subflow_data_ready (4) mptcp | -1 | C | 556 | 25d | 163d | 29/29 | fixed on 2026/01/26 05:07 | ||
| linux-6.6 | WARNING in subflow_data_ready origin:upstream | -1 | C | done | 13 | 48d | 51d | 2/2 | fixed on 2026/01/16 22:01 |
| Created | Duration | User | Patch | Repo | Result |
|---|---|---|---|---|---|
| 2024/06/05 06:48 | 6h11m | fix candidate | upstream | OK (1) job log | |
| 2024/06/03 22:53 | 1h49m | bisect fix | linux-6.1.y | OK (0) job log log |
------------[ cut here ]------------ WARNING: CPU: 0 PID: 4374 at net/mptcp/subflow.c:1348 subflow_data_ready+0x2da/0x390 Modules linked in: CPU: 0 PID: 4374 Comm: syz-executor993 Not tainted 6.1.84-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:subflow_data_ready+0x2da/0x390 net/mptcp/subflow.c:1347 Code: 60 0f 85 d2 00 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a5 22 11 f7 4c 89 e7 e8 5d 0f 00 00 eb b8 e8 96 22 11 f7 <0f> 0b e9 57 ff ff ff 44 89 f9 80 e1 07 38 c1 0f 8c bf fd ff ff 4c RSP: 0018:ffffc90000006fc0 EFLAGS: 00010246 RAX: ffffffff8a79645a RBX: 0000000000000000 RCX: ffff888076213b80 RDX: 0000000000000102 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000007070 R08: ffffffff8a796350 R09: ffffed100435c568 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888077f5e200 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888021ae2280 FS: 00007fe8045d16c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcc705a9b0 CR3: 0000000028fa2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> tcp_data_queue+0x21c5/0x6fd0 net/ipv4/tcp_input.c:5102 tcp_rcv_state_process+0x2682/0x4510 net/ipv4/tcp_input.c:6704 tcp_v4_do_rcv+0x729/0xb00 net/ipv4/tcp_ipv4.c:1700 tcp_v4_rcv+0x29e0/0x3250 net/ipv4/tcp_ipv4.c:2099 ip_protocol_deliver_rcu+0x381/0x740 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2b4/0x4f0 net/ipv4/ip_input.c:233 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302 __netif_receive_skb_one_core net/core/dev.c:5528 [inline] __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5642 process_backlog+0x381/0x760 net/core/dev.c:5970 __napi_poll+0xc7/0x470 net/core/dev.c:6537 napi_poll net/core/dev.c:6604 [inline] net_rx_action+0x70f/0xeb0 net/core/dev.c:6718 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:memset_erms+0xb/0x10 arch/x86/lib/memset_64.S:65 Code: 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3 aa <4c> 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 01 01 RSP: 0018:ffffc9000491f418 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 1ffffffff1df0952 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc9000491f560 RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffc9000491f550 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000491f500 R13: ffffffff8ef84a96 R14: ffffc9000491f535 R15: ffffc9000491f550 unwind_next_frame+0xde7/0x2220 arch/x86/kernel/unwind_orc.c:546 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 save_stack+0xf6/0x1e0 mm/page_owner.c:127 __set_page_owner+0x26/0x390 mm/page_owner.c:190 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2513 prep_new_page mm/page_alloc.c:2520 [inline] get_page_from_freelist+0x31a1/0x3320 mm/page_alloc.c:4279 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5547 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x84/0x2d0 mm/slub.c:1992 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc_lru+0x1a5/0x2d0 mm/slub.c:3429 alloc_inode_sb include/linux/fs.h:3193 [inline] sock_alloc_inode+0x24/0xc0 net/socket.c:306 alloc_inode fs/inode.c:261 [inline] new_inode_pseudo+0x61/0x1d0 fs/inode.c:1020 sock_alloc net/socket.c:631 [inline] __sock_create+0x11f/0x910 net/socket.c:1514 sock_create net/socket.c:1601 [inline] __sys_socket_create net/socket.c:1638 [inline] __sys_socket+0x136/0x3a0 net/socket.c:1666 __do_sys_socket net/socket.c:1679 [inline] __se_sys_socket net/socket.c:1677 [inline] __x64_sys_socket+0x76/0x80 net/socket.c:1677 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe804614a79 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 1a 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe8045d1228 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007fe80469f428 RCX: 00007fe804614a79 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000000000000000a RBP: 00007fe80469f420 R08: 00007fe8045d16c0 R09: 00007fe8045d16c0 R10: 00007fe8045d16c0 R11: 0000000000000246 R12: 00007fe80469f42c R13: 00007fe80466b620 R14: 6d705f706374706d R15: 00007ffcc703d308 </TASK> ---------------- Code disassembly (best guess): 0: 03 40 0f add 0xf(%rax),%eax 3: b6 f6 mov $0xf6,%dh 5: 48 b8 01 01 01 01 01 movabs $0x101010101010101,%rax c: 01 01 01 f: 48 0f af c6 imul %rsi,%rax 13: f3 48 ab rep stos %rax,%es:(%rdi) 16: 89 d1 mov %edx,%ecx 18: f3 aa rep stos %al,%es:(%rdi) 1a: 4c 89 c8 mov %r9,%rax 1d: c3 ret 1e: 90 nop 1f: 49 89 f9 mov %rdi,%r9 22: 40 88 f0 mov %sil,%al 25: 48 89 d1 mov %rdx,%rcx 28: f3 aa rep stos %al,%es:(%rdi) * 2a: 4c 89 c8 mov %r9,%rax <-- trapping instruction 2d: c3 ret 2e: 90 nop 2f: 49 89 fa mov %rdi,%r10 32: 40 0f b6 ce movzbl %sil,%ecx 36: 48 b8 01 01 01 01 01 movabs $0x101010101010101,%rax 3d: 01 01 01
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024/04/03 23:53 | linux-6.1.y | 347385861c50 | 51c4dcff | .config | console log | report | syz | C | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | WARNING in subflow_data_ready | |
| 2026/01/29 06:29 | linux-6.1.y | cd9b81672742 | 0adc945e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | WARNING in subflow_data_ready | ||
| 2026/01/16 01:53 | linux-6.1.y | bec0e10ee67e | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | WARNING in subflow_data_ready | ||
| 2026/01/10 09:54 | linux-6.1.y | 50cbba13faa2 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | WARNING in subflow_data_ready | ||
| 2026/01/10 05:24 | linux-6.1.y | 50cbba13faa2 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | WARNING in subflow_data_ready | ||
| 2026/01/05 11:19 | linux-6.1.y | 50cbba13faa2 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | WARNING in subflow_data_ready | ||
| 2024/04/03 16:23 | linux-6.1.y | 347385861c50 | 51c4dcff | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | WARNING in subflow_data_ready | ||
| 2024/01/11 08:06 | linux-6.1.y | 7c58bfa711cb | 00f3cc59 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | WARNING in subflow_data_ready | ||
| 2026/01/29 04:01 | linux-6.1.y | cd9b81672742 | 0adc945e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | WARNING in subflow_data_ready | ||
| 2026/01/28 22:33 | linux-6.1.y | cd9b81672742 | 004c195c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | WARNING in subflow_data_ready | ||
| 2026/01/19 05:03 | linux-6.1.y | cd9b81672742 | 20d37d28 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | WARNING in subflow_data_ready | ||
| 2024/03/13 17:50 | linux-6.1.y | 61adba85cc40 | f919f202 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | WARNING in subflow_data_ready | ||
| 2024/02/01 02:40 | linux-6.1.y | e5c3b988b827 | 373b66cd | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | WARNING in subflow_data_ready | ||
| 2024/01/18 13:50 | linux-6.1.y | fec3b1451d5f | 239abf84 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | WARNING in subflow_data_ready |