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BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx

Status: upstream: reported C repro on 2023/03/26 07:03
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+6b3815bf8825a0399316@syzkaller.appspotmail.com
First crash: 450d, last: 16d
Bug presence (1)
Date Name Commit Repro Result
2024/01/05 upstream (ToT) 1f874787ed9a C [report] BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx C error 7 644d 709d 0/1 upstream: reported C repro on 2022/07/10 15:34
upstream BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx dccp C unreliable 189 38d 1027d 0/27 closed as dup on 2021/08/30 08:50
linux-4.14 BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx syz error 3 598d 707d 0/1 upstream: reported syz repro on 2022/07/13 03:43
linux-5.15 BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx origin:upstream C error 56 86d 450d 0/3 upstream: reported C repro on 2023/03/26 07:00
Fix bisection attempts (6)
Created Duration User Patch Repo Result
2024/06/02 03:12 1h27m bisect fix linux-6.1.y job log (0) log
2024/05/01 08:38 2h18m bisect fix linux-6.1.y job log (0) log
2024/02/11 15:32 2h00m bisect fix linux-6.1.y job log (0) log
2024/01/05 12:38 1h32m bisect fix linux-6.1.y job log (0) log
2023/09/21 23:34 1h19m bisect fix linux-6.1.y job log (0) log
2023/06/22 09:02 1h08m bisect fix linux-6.1.y job log (0) log

Sample crash report:
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: 0 PID: 3603 Comm: syz-executor334 Not tainted 6.1.29-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 tfrc_rx_hist_sample_rtt+0x38f/0x4a0 net/dccp/ccids/lib/packet_history.c:414
 ccid3_hc_rx_packet_recv+0x6aa/0xf40 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+0x1b3/0x310 net/dccp/input.c:374
 dccp_v4_do_rcv+0xfb/0x1e0 net/dccp/ipv4.c:674
 sk_backlog_rcv include/net/sock.h:1109 [inline]
 __sk_receive_skb+0x41a/0x9d0 net/core/sock.c:565
 ip_protocol_deliver_rcu+0x381/0x740 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x28c/0x4c0 net/ipv4/ip_input.c:233
 NF_HOOK+0x364/0x410 include/linux/netfilter.h:302
 NF_HOOK+0x364/0x410 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5492 [inline]
 __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5606
 process_backlog+0x347/0x700 net/core/dev.c:5934
 __napi_poll+0xc7/0x470 net/core/dev.c:6501
 napi_poll net/core/dev.c:6568 [inline]
 net_rx_action+0x70f/0xeb0 net/core/dev.c:6679
 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571
 do_softirq+0x162/0x240 kernel/softirq.c:472
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1b1/0x1f0 kernel/softirq.c:396
 rcu_read_unlock_bh include/linux/rcupdate.h:817 [inline]
 ip_finish_output2+0xee4/0x1280 net/ipv4/ip_output.c:229
 dst_output include/net/dst.h:444 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 __ip_queue_xmit+0x12df/0x1da0 net/ipv4/ip_output.c:532
 dccp_transmit_skb+0xeb2/0x1600 net/dccp/output.c:138
 dccp_xmit_packet+0x2ef/0x530 net/dccp/output.c:281
 dccp_write_xmit+0x131/0x220 net/dccp/output.c:366
 dccp_sendmsg+0x6a9/0xab0 net/dccp/proto.c:788
 sock_sendmsg_nosec net/socket.c:716 [inline]
 sock_sendmsg net/socket.c:736 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2482
 ___sys_sendmsg net/socket.c:2536 [inline]
 __sys_sendmsg+0x2a9/0x390 net/socket.c:2565
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f625c284b49
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc8a04e5d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f625c284b49
RDX: 000000000c004004 RSI: 0000000020004340 RDI: 0000000000000005
RBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d
R10: 000000000000000d R11: 0000000000000246 R12: 00007ffc8a04e5f0
R13: 00000000000f4240 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Crashes (21):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/05/23 03:51 linux-6.1.y fa74641fb6b9 4bce1a3e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/03/26 11:25 linux-6.1.y e3a87a10f259 fbf0499a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/05/23 00:33 linux-6.1.y fa74641fb6b9 4bce1a3e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/05/23 00:01 linux-6.1.y fa74641fb6b9 4bce1a3e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/03/26 08:17 linux-6.1.y e3a87a10f259 fbf0499a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/03/26 07:43 linux-6.1.y e3a87a10f259 fbf0499a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2024/03/31 21:38 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2024/03/22 00:12 linux-6.1.y d7543167affd 7a239ce7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2024/03/21 18:08 linux-6.1.y d7543167affd 7a239ce7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2024/03/09 10:54 linux-6.1.y 61adba85cc40 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2024/02/29 22:19 linux-6.1.y 81e1dc2f7001 352ab904 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/11/12 22:55 linux-6.1.y fb2635ac69ab 6d6dbf8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/11/10 12:31 linux-6.1.y fb2635ac69ab 45e9b83e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/11/02 07:49 linux-6.1.y 32c9cdbe383c 69904c9f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/10/13 00:36 linux-6.1.y 082280fe94a0 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2024/02/21 01:39 linux-6.1.y 8b4118fabd6e 3af7dd65 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/12/06 10:27 linux-6.1.y c6114c845984 858d62d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/07/11 20:56 linux-6.1.y 61fd484b2cf6 2f19aa4f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/04/24 16:52 linux-6.1.y f17b0ab65d17 fdc18293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/04/26 03:29 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
2023/03/26 07:02 linux-6.1.y e3a87a10f259 fbf0499a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
* Struck through repros no longer work on HEAD.