BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:417/tfrc_rx_hist_sample_rtt() CPU: 1 UID: 0 PID: 6209 Comm: syz-executor.0 Not tainted 6.13.0-rc4-syzkaller-gf07044dd0df0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 tfrc_rx_hist_sample_rtt+0x397/0x4b0 net/dccp/ccids/lib/packet_history.c:414 ccid3_hc_rx_packet_recv+0x69d/0xe60 net/dccp/ccids/ccid3.c:760 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline] dccp_deliver_input_to_ccids net/dccp/input.c:176 [inline] dccp_rcv_established+0x1bb/0x320 net/dccp/input.c:374 dccp_v4_do_rcv+0xff/0x1f0 net/dccp/ipv4.c:680 sk_backlog_rcv include/net/sock.h:1121 [inline] __sk_receive_skb+0x82b/0x8b0 net/core/sock.c:568 ip_protocol_deliver_rcu+0x2e9/0x440 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x341/0x5f0 net/ipv4/ip_input.c:233 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5672 [inline] __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5785 process_backlog+0x662/0x15b0 net/core/dev.c:6117 __napi_poll+0xcb/0x490 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7074 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__update_page_owner_handle mm/page_owner.c:244 [inline] RIP: 0010:__set_page_owner+0x1ae/0x800 mm/page_owner.c:325 Code: e8 27 c7 92 ff 48 8b 05 20 f3 99 0c 4d 8d 34 07 49 8d 7c 07 08 48 89 f8 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df 0f b6 04 10 <84> c0 0f 85 1d 01 00 00 8b 44 24 28 41 89 46 08 4c 89 f0 48 c1 e8 RSP: 0018:ffffc900049ceaa0 EFLAGS: 00000a02 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888034acbc00 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff88801ea32b80 RBP: ffffc900049ceb88 R08: ffffffff820cacab R09: 1ffffffff284e110 R10: dffffc0000000000 R11: fffffbfff284e111 R12: 0000000000000000 R13: 0000000000000001 R14: ffff88801ea32b78 R15: ffff88801ea32b70 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1558 prep_new_page mm/page_alloc.c:1566 [inline] get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3476 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2269 folio_alloc_mpol_noprof mm/mempolicy.c:2287 [inline] vma_alloc_folio_noprof+0x12e/0x230 mm/mempolicy.c:2317 folio_prealloc+0x2e/0x170 wp_page_copy mm/memory.c:3367 [inline] do_wp_page+0x1253/0x49b0 mm/memory.c:3759 handle_pte_fault+0xfa5/0x5ed0 mm/memory.c:5817 __handle_mm_fault mm/memory.c:5944 [inline] handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6112 do_user_addr_fault arch/x86/mm/fault.c:1389 [inline] handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x2b9/0x8b0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:__put_user_4+0x11/0x20 arch/x86/lib/putuser.S:88 Code: 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 89 cb 48 c1 fb 3f 48 09 d9 0f 01 cb <89> 01 31 c9 0f 01 ca c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 RSP: 0018:ffffc900049cf9b8 EFLAGS: 00050202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000020002038 RDX: 0000000020002000 RSI: ffffffff8c0aaae0 RDI: ffffffff8c5edce0 RBP: ffffc900049cfed0 R08: ffffffff90185277 R09: 1ffffffff2030a4e R10: dffffc0000000000 R11: fffffbfff2030a4f R12: 0000000000000400 R13: dffffc0000000000 R14: ffffc900049cfd20 R15: 1ffff92000939f48 __sys_sendmmsg+0x4de/0x720 net/socket.c:2731 __do_sys_sendmmsg net/socket.c:2753 [inline] __se_sys_sendmmsg net/socket.c:2750 [inline] __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2750 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f351f87c8c9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007f352050f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f351f99bf80 RCX: 00007f351f87c8c9 RDX: 000000000000ffc3 RSI: 0000000020001e80 RDI: 0000000000000006 RBP: 00007f351f8d8ae8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f351f99bf80 R15: 00007ffe7159ebf8 Negotiation of local Allow Short Seqnos failed in state CHANGING at net/dccp/feat.c:1541/dccp_feat_activate_values() BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:417/tfrc_rx_hist_sample_rtt() CPU: 1 UID: 0 PID: 6733 Comm: syz-executor.0 Not tainted 6.13.0-rc4-syzkaller-gf07044dd0df0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 tfrc_rx_hist_sample_rtt+0x397/0x4b0 net/dccp/ccids/lib/packet_history.c:414 ccid3_hc_rx_packet_recv+0x69d/0xe60 net/dccp/ccids/ccid3.c:760 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline] dccp_deliver_input_to_ccids net/dccp/input.c:176 [inline] dccp_rcv_established+0x1bb/0x320 net/dccp/input.c:374 dccp_v4_do_rcv+0xff/0x1f0 net/dccp/ipv4.c:680 sk_backlog_rcv include/net/sock.h:1121 [inline] __sk_receive_skb+0x82b/0x8b0 net/core/sock.c:568 ip_protocol_deliver_rcu+0x2e9/0x440 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x341/0x5f0 net/ipv4/ip_input.c:233 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5672 [inline] __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5785 process_backlog+0x662/0x15b0 net/core/dev.c:6117 __napi_poll+0xcb/0x490 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7074 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5853 Code: 2b 00 74 08 4c 89 f7 e8 0a a0 88 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc9000550f820 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92000aa1f10 RCX: ffff8880321f64d8 RDX: dffffc0000000000 RSI: ffffffff8c0aaae0 RDI: ffffffff8c5edce0 RBP: ffffc9000550f978 R08: ffffffff942708b7 R09: 1ffffffff284e116 R10: dffffc0000000000 R11: fffffbfff284e117 R12: 1ffff92000aa1f0c R13: dffffc0000000000 R14: ffffc9000550f880 R15: 0000000000000246 __might_fault+0xc6/0x120 mm/memory.c:6751 __sys_sendmmsg+0x4ce/0x720 net/socket.c:2731 __do_sys_sendmmsg net/socket.c:2753 [inline] __se_sys_sendmmsg net/socket.c:2750 [inline] __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2750 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f351f87c8c9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007f352050f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f351f99bf80 RCX: 00007f351f87c8c9 RDX: 000000000000ffc3 RSI: 0000000020001e80 RDI: 0000000000000006 RBP: 00007f351f8d8ae8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f351f99bf80 R15: 00007ffe7159ebf8 ---------------- Code disassembly (best guess): 0: e8 27 c7 92 ff call 0xff92c72c 5: 48 8b 05 20 f3 99 0c mov 0xc99f320(%rip),%rax # 0xc99f32c c: 4d 8d 34 07 lea (%r15,%rax,1),%r14 10: 49 8d 7c 07 08 lea 0x8(%r15,%rax,1),%rdi 15: 48 89 f8 mov %rdi,%rax 18: 48 c1 e8 03 shr $0x3,%rax 1c: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 23: fc ff df 26: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 0f 85 1d 01 00 00 jne 0x14f 32: 8b 44 24 28 mov 0x28(%rsp),%eax 36: 41 89 46 08 mov %eax,0x8(%r14) 3a: 4c 89 f0 mov %r14,%rax 3d: 48 rex.W 3e: c1 .byte 0xc1 3f: e8 .byte 0xe8