From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f208.google.com (mail-il1-f208.google.com [209.85.166.208]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 64EDE2F29 for ; Fri, 21 Nov 2025 13:06:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763730390; cv=none; b=LX9IPGTodOvxfyFmopSrHby9ntxI8fyCnXal8AWRDS0NkPkDk4w8IlQ0kt6sTF0/6SwXHjSWacHS/yJzh4UotZEmIdX7j4jFp+2ZK2FaZJ7YKais1C+5lr084EWPjcjsen7bNzTgmNsatdSX2Ly4EooUyRghoz7MQdHHdJpPDN8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763730390; c=relaxed/simple; bh=OTKf8dL3P15Qi40FCccyZSrliLjE4AY0nKRoT0GxW1w=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=qSEK+w82M7dBfqqpke49WEhAeuBl+AbpFK4p7G/uoLJPLR9zn/zUxVAlbBQisYQuqBw7Il2LcnesrboupMM/xeC2pCuDSBtFwIaC9W2WJlOR6ZTM7jxGtTrBug+EQAFf365VOfsRqTka0jSh/jNv/dV3FJKrMawxsclu24jRSeI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.208 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f208.google.com with SMTP id e9e14a558f8ab-433312ee468so19849775ab.1 for ; Fri, 21 Nov 2025 05:06:28 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763730387; x=1764335187; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=FT1x2HB2uGxQ7NpNysTtVgySUetV2+o/si07hLXCZdM=; b=eBNdCsHuD8CwJPHoz4nkyPmC6ywJKBYoyzSCJG9kJdd6S3BdODa2R91Br5jK6UBW9G 7YBntzTgHO5SWtV22FAtHpjn30WewDftZNgj8qdzwreCVp9P9GjUmQftK+UOkW/uuNxg QT0S+75riMIS7WRYnIA7E8xCIa5ArQMCVK7JCfI0gvn2+ztTVp7mSSyevpLXg9O0zxwk TxKYxaCBurSAmY2Vf1eUv5pJOWgW51W7YI+c+rxGG0DvOGRd/7iaQB+SjVweiAmKesYF yVmpKdWYcDyvnS+M34QI1JKOVwyww49YliKSVm0HQekAEeA/56egB35NGatbytL7DVtT 83jg== X-Forwarded-Encrypted: i=1; AJvYcCUaAKo2cE8L1BV0VuR5qiRqK0TQpQ2i2zuu4HsGjeVyZffQOxIqYmtlT/+U3fqHvAhBHLK77hlXMjodUnM=@vger.kernel.org X-Gm-Message-State: AOJu0YwPVZlyi3IZ8VeC/EDNQ0NXPnAB8YTkuFQXXTwctw85BNR296Pt UnIVNNGvIk6PIfn4k/7UsEAxYrNh+0d9e50kVYpDVzB841ALmn6LFn8B33Tiv2hIDaJPGxJ0rqp bH49Cb2m+lZ/Mhb4V99tn4qF4he9koN9WtmS+MnI0VliUCLJ64xT2UYsvUT8= X-Google-Smtp-Source: AGHT+IFdvkkAjDlGedlOhE0xH6WOBWW95IC9KULa6N3zK1KL6ESS11Yk7FY67ydGwhnV6abpG5FhAg5AHPjOWKWpBorCl7tqe/ez Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2145:b0:433:7929:e7a8 with SMTP id e9e14a558f8ab-435aa8d0f3amr45844025ab.12.1763730387638; Fri, 21 Nov 2025 05:06:27 -0800 (PST) Date: Fri, 21 Nov 2025 05:06:27 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <692063d3.a70a0220.d98e3.0045.GAE@google.com> Subject: [syzbot] [wireless?] WARNING in ieee80211_tx_monitor (3) From: syzbot To: johannes@sipsolutions.net, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: db9030a787e3 Merge remote-tracking branch 'will/for-next/p.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=17156212580000 kernel config: https://syzkaller.appspot.com/x/.config?x=fdc83aa8a8b9d1ae dashboard link: https://syzkaller.appspot.com/bug?extid=b28badf07224eef8281c compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/8932d8648ef5/disk-db9030a7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/8446b6e4ef5c/vmlinux-db9030a7.xz kernel image: https://storage.googleapis.com/syzbot-assets/b17118b94e44/Image-db9030a7.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b28badf07224eef8281c@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8882 at net/mac80211/status.c:925 ieee80211_tx_monitor+0x129c/0x1d74 net/mac80211/status.c:926 Modules linked in: CPU: 0 UID: 0 PID: 8882 Comm: syz.1.494 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 43400005 (nZcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ieee80211_tx_monitor+0x129c/0x1d74 net/mac80211/status.c:926 lr : ieee80211_tx_monitor+0x1294/0x1d74 net/mac80211/status.c:925 sp : ffff800097927b60 x29: ffff800097927bb0 x28: dfff800000000000 x27: 0000000000000000 x26: 1fffe0001fceb492 x25: 1fffe0001fceb493 x24: ffff0000fe75a490 x23: 000000000000000d x22: ffff0000fe75a498 x21: 0000000000000000 x20: ffff800097927d00 x19: ffff0000fe75a3c0 x18: 00000000ffffffff x17: ffff800093304000 x16: ffff80008052abc8 x15: 0000000000000001 x14: 1fffe0001a97c5be x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001a97c5bf x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c4bd0000 x7 : ffff800080acef64 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff800097927d00 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff80008db39a80 Call trace: ieee80211_tx_monitor+0x129c/0x1d74 net/mac80211/status.c:926 (P) __ieee80211_tx_status net/mac80211/status.c:1110 [inline] ieee80211_tx_status_ext+0x15e4/0x1f70 net/mac80211/status.c:1235 ieee80211_tx_status_skb+0x184/0x264 net/mac80211/status.c:1133 ieee80211_handle_queued_frames+0x10c/0x17c net/mac80211/main.c:457 ieee80211_tasklet_handler+0x20/0x30 net/mac80211/main.c:472 tasklet_action_common+0x2fc/0x3ec kernel/softirq.c:925 tasklet_action+0x68/0x8c kernel/softirq.c:953 handle_softirqs+0x328/0xc88 kernel/softirq.c:622 __do_softirq+0x14/0x20 kernel/softirq.c:656 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73 do_softirq+0x90/0xf8 kernel/softirq.c:523 __local_bh_enable_ip+0x240/0x35c kernel/softirq.c:450 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33 __neigh_event_send+0x84/0x13fc net/core/neighbour.c:1274 neigh_event_send_probe include/net/neighbour.h:471 [inline] neigh_event_send include/net/neighbour.h:477 [inline] neigh_resolve_output+0x180/0x654 net/core/neighbour.c:1579 neigh_output include/net/neighbour.h:547 [inline] ip_finish_output2+0xdc4/0x1240 net/ipv4/ip_output.c:237 __ip_finish_output+0x1b0/0x44c net/ipv4/ip_output.c:-1 ip_finish_output+0x44/0x304 net/ipv4/ip_output.c:325 NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip_output+0x284/0x3f8 net/ipv4/ip_output.c:438 dst_output include/net/dst.h:464 [inline] ip_local_out net/ipv4/ip_output.c:131 [inline] __ip_queue_xmit+0x8b8/0x1794 net/ipv4/ip_output.c:534 ip_queue_xmit+0x5c/0x7c net/ipv4/ip_output.c:548 l2tp_ip_sendmsg+0x57c/0x1280 net/l2tp/l2tp_ip.c:518 inet_sendmsg+0x154/0x284 net/ipv4/af_inet.c:853 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0x490/0x7b8 net/socket.c:2630 ___sys_sendmsg+0x204/0x278 net/socket.c:2684 __sys_sendmmsg+0x1f4/0x548 net/socket.c:2773 __do_sys_sendmmsg net/socket.c:2800 [inline] __se_sys_sendmmsg net/socket.c:2797 [inline] __arm64_sys_sendmmsg+0xa0/0xbc net/socket.c:2797 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 177697 hardirqs last enabled at (177696): [] __local_bh_enable_ip+0x1ec/0x35c kernel/softirq.c:455 hardirqs last disabled at (177697): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (177396): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (177397): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]--- ieee80211_tx_status: headroom too small --- 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 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