Hello, syzbot found the following issue on: HEAD commit: 03b123debcbc tcp: tcp_enter_quickack_mode() should be static git tree: net-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=17ac9ffaa80000 kernel config: https://syzkaller.appspot.com/x/.config?x=32e3dcc11fd0d297 dashboard link: https://syzkaller.appspot.com/bug?extid=14736e249bce46091c18 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=133f36c6a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11a8e73aa80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/348462fb61fa/disk-03b123de.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/33375730f77f/vmlinux-03b123de.xz kernel image: https://storage.googleapis.com/syzbot-assets/b6882fbac041/bzImage-03b123de.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+14736e249bce46091c18@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ ODEBUG: activate active (active state 1) object: ffff88801529b000 object type: rcu_head hint: 0x0 WARNING: CPU: 0 PID: 57 at lib/debugobjects.c:514 debug_print_object+0x19e/0x2a0 lib/debugobjects.c:514 Modules linked in: CPU: 0 PID: 57 Comm: kworker/u4:4 Not tainted 6.5.0-rc1-syzkaller-00458-g03b123debcbc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Workqueue: netns cleanup_net RIP: 0010:debug_print_object+0x19e/0x2a0 lib/debugobjects.c:514 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 49 48 8b 14 dd c0 20 c8 8a 41 56 4c 89 e6 48 c7 c7 20 14 c8 8a e8 b2 fa 28 fd <0f> 0b 58 83 05 5c 8b 87 0a 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e RSP: 0018:ffffc90001587828 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: ffff888016ee5940 RSI: ffffffff814d4986 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff8ac81a80 R13: ffffffff8a6df720 R14: 0000000000000000 R15: ffff88802a6b65c8 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000c776000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> debug_object_activate+0x32b/0x490 lib/debugobjects.c:733 debug_rcu_head_queue kernel/rcu/rcu.h:226 [inline] kvfree_call_rcu+0x30/0xbe0 kernel/rcu/tree.c:3359 tcx_entry_free include/net/tcx.h:96 [inline] tcx_uninstall+0x2fd/0x630 kernel/bpf/tcx.c:115 dev_tcx_uninstall include/net/tcx.h:174 [inline] unregister_netdevice_many_notify+0x5e7/0x1a20 net/core/dev.c:10899 ip6gre_exit_batch_net+0x3ea/0x580 net/ipv6/ip6_gre.c:1642 ops_exit_list+0x125/0x170 net/core/net_namespace.c:175 cleanup_net+0x505/0xb20 net/core/net_namespace.c:614 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
