From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f72.google.com (mail-oo1-f72.google.com [209.85.161.72]) (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 5BEC430F95C for ; Tue, 3 Mar 2026 06:07:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772518053; cv=none; b=Sfpz++BEo9goz/Y8NqtjfGKkwZhSItInMH687n7R9FdPDYvyiiZLBpY+SEYwZ3J2cGwuxSHAfyDu3inaGEVMTMF5KywJ4ez7/1Gg8/wg1QA/9VcS6vi9aI7c4YYpcgn+OFmUIQeIkL4kw+t+LWxxRSlrbZGtsZcvSn0wmW6Wu/k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772518053; c=relaxed/simple; bh=vvrILT+iq8oS4mB6nITgoC6Lmr1isJ71LVd3pdQSF6E=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Ktd7gqwTaJXLMz1PkCvSYPefbhNmNot7YR4gNA4EuAk6i3+VkMC+y2p71J8DoaFsSy3CpwwGha+N+dn7ffpSJVIpc3Lk1JHQPilJxuo9EdGeUn5/tFLit7cSYKKEjngBHD2vrug4qUAhkmyzkqP8GOv99nxop7SYhIifBpYLGFs= 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=209.85.161.72 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-oo1-f72.google.com with SMTP id 006d021491bc7-679a47a1febso103270937eaf.3 for ; Mon, 02 Mar 2026 22:07:32 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772518051; x=1773122851; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=EXYLFdJyo3qj8tElYEFbgHcNzB4ixy6p8N0OWxG4X4A=; b=duuLJejy5rY8RBIvhNLxdHs3dR7h59PwxsV0Y/KCBeNFSfzogPKqG5f3YSm/J1BQht mRmQ4m+JpKD+kfMdtFSztAlBOU+vqqED07VDjEviwmlorkf5VIimBlRYNUfw94awAesC RNXI4ohyWpdxu2u43C1qeR+xZeEcp3vza1DYw4JnRUYltxrr04O0dT5YUdOh6SVIrGwc vKVCyxARUyJaDj6LxQp9HelR+IjCJMDZjnXpCxEUVAPqMXEyIirXYOieD5LAAyZ5OOMN 2JesLYlgBoOGRoA5gQAO38ccF5q8q+fE13y++GUiXL3e/zvAaQFp14W4DpAOmts97y/P b80w== X-Forwarded-Encrypted: i=1; AJvYcCVxOavfTmzrxbfAu/xd0BGIsn7RaCIrWy9KP7uRCy7Ri7xAjtch5cPfJqB9rWV+ubc9TaWpFxY=@vger.kernel.org X-Gm-Message-State: AOJu0Ywhv4aeRLaiAy9QMAhLvy1uJ2y6U0q3Fn+cgHWChLd0RZrl4EDg kGcb9OVfAA+qQUKXcx/Z4JCbES6DuC899G7JFghvWYXiopkKJvGQ9S015xhUaFZbuYLiC6dxqhz ug2zN2uqTmKIHNxyHpVQAl6T5ivV3buIZ7Bse6UnwJDdgaEzdrkhqVh5G3yY= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:208a:b0:679:97d5:dd25 with SMTP id 006d021491bc7-679faf4e60bmr8716001eaf.56.1772518051182; Mon, 02 Mar 2026 22:07:31 -0800 (PST) Date: Mon, 02 Mar 2026 22:07:31 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69a67aa3.a70a0220.b118c.000a.GAE@google.com> Subject: [syzbot] [wireless?] KMSAN: uninit-value in nl80211_send_pmsr_capa 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: eb71ab2bf722 Merge tag 'bpf-fixes' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10b7d0ba580000 kernel config: https://syzkaller.appspot.com/x/.config?x=10f867da86e38691 dashboard link: https://syzkaller.appspot.com/bug?extid=c686c6b197d10ff3a749 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/fcbe8b5437ef/disk-eb71ab2b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/245a6565a05b/vmlinux-eb71ab2b.xz kernel image: https://storage.googleapis.com/syzbot-assets/a83b065baa80/bzImage-eb71ab2b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c686c6b197d10ff3a749@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in nl80211_send_pmsr_ftm_capa net/wireless/nl80211.c:2302 [inline] BUG: KMSAN: uninit-value in nl80211_send_pmsr_capa+0x6fe/0x1b50 net/wireless/nl80211.c:2404 nl80211_send_pmsr_ftm_capa net/wireless/nl80211.c:2302 [inline] nl80211_send_pmsr_capa+0x6fe/0x1b50 net/wireless/nl80211.c:2404 nl80211_send_wiphy+0x1464/0x96d0 net/wireless/nl80211.c:3302 nl80211_dump_wiphy+0x5b6/0xc80 net/wireless/nl80211.c:3447 genl_dumpit+0x14e/0x2a0 net/netlink/genetlink.c:1026 netlink_dump+0xbaa/0x1800 net/netlink/af_netlink.c:2325 netlink_recvmsg+0xc8a/0xfe0 net/netlink/af_netlink.c:1976 sock_recvmsg_nosec+0x23e/0x2e0 net/socket.c:1078 ____sys_recvmsg+0x4e5/0x620 net/socket.c:2810 ___sys_recvmsg+0x20b/0x850 net/socket.c:2854 do_recvmmsg+0x40e/0xdf0 net/socket.c:2949 __sys_recvmmsg net/socket.c:3023 [inline] __do_sys_recvmmsg net/socket.c:3046 [inline] __se_sys_recvmmsg net/socket.c:3039 [inline] __x64_sys_recvmmsg+0x383/0x500 net/socket.c:3039 x64_sys_call+0x96d/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:300 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: mac80211_hwsim_new_radio+0x60b8/0x7e20 drivers/net/wireless/virtual/mac80211_hwsim.c:5837 hwsim_new_radio_nl+0x1839/0x3160 drivers/net/wireless/virtual/mac80211_hwsim.c:6504 genl_family_rcv_msg_doit+0x338/0x3f0 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0xac5/0xc00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x54d/0x680 net/netlink/af_netlink.c:2550 genl_rcv+0x41/0x60 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0xf04/0x12b0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x10b2/0x1250 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0xfe7/0x1080 net/socket.c:2592 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2646 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2683 [inline] __se_sys_sendmsg net/socket.c:2681 [inline] __x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2681 x64_sys_call+0x1e20/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4522 [inline] slab_alloc_node mm/slub.c:4844 [inline] __kmalloc_cache_noprof+0x35e/0x1260 mm/slub.c:5353 kmalloc_noprof include/linux/slab.h:950 [inline] hwsim_new_radio_nl+0x1705/0x3160 drivers/net/wireless/virtual/mac80211_hwsim.c:6492 genl_family_rcv_msg_doit+0x338/0x3f0 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0xac5/0xc00 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x54d/0x680 net/netlink/af_netlink.c:2550 genl_rcv+0x41/0x60 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0xf04/0x12b0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x10b2/0x1250 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0xfe7/0x1080 net/socket.c:2592 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2646 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2683 [inline] __se_sys_sendmsg net/socket.c:2681 [inline] __x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2681 x64_sys_call+0x1e20/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 UID: 0 PID: 15981 Comm: syz.5.4560 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 ===================================================== --- 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