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charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 038d61fd6422 Linux 6.16 git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=11b88cf0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=4066f1c76cfbc4fe dashboard link: https://syzkaller.appspot.com/bug?extid=6641a61fe0e2e89ae8c5 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16ca1782580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=140194a2580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/6505c612be11/disk-038d61fd.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e466ef29c1ca/vmlinux-038d61fd.xz kernel image: https://storage.googleapis.com/syzbot-assets/b6d3d8fc5cbb/bzImage-038d61fd.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6641a61fe0e2e89ae8c5@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 36 at net/xfrm/xfrm_state.c:3284 xfrm_state_fini+0x270/0x2f0 net/xfrm/xfrm_state.c:3284 Modules linked in: CPU: 1 UID: 0 PID: 36 Comm: kworker/u8:2 Not tainted 6.16.0-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: netns cleanup_net RIP: 0010:xfrm_state_fini+0x270/0x2f0 net/xfrm/xfrm_state.c:3284 Code: c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 68 fa 0b f8 48 8b 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 56 c8 ec f7 e8 51 e8 a9 f7 90 <0f> 0b 90 e9 fd fd ff ff e8 43 e8 a9 f7 90 0f 0b 90 e9 60 fe ff ff RSP: 0018:ffffc90000ac7898 EFLAGS: 00010293 RAX: ffffffff8a163e8f RBX: ffff888034008000 RCX: ffff888143299e00 RDX: 0000000000000000 RSI: ffffffff8db8419f RDI: ffff888143299e00 RBP: ffffc90000ac79b0 R08: ffffffff8f6196e7 R09: 1ffffffff1ec32dc R10: dffffc0000000000 R11: fffffbfff1ec32dd R12: ffffffff8f617760 R13: 1ffff92000158f40 R14: ffff8880340094c0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125d23000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbd9e960960 CR3: 00000000316d3000 CR4: 0000000000350ef0 Call Trace: xfrm_net_exit+0x2d/0x70 net/xfrm/xfrm_policy.c:4348 ops_exit_list net/core/net_namespace.c:200 [inline] ops_undo_list+0x49a/0x990 net/core/net_namespace.c:253 cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x711/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- 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@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, 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 overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup