From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f77.google.com (mail-io1-f77.google.com [209.85.166.77]) (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 CE1291ADC7E for ; Mon, 10 Nov 2025 22:00:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762812033; cv=none; b=eV15txFxU7Uo3/AvFWxDTwUGmkjhSHWiHLHoQLjbS+hh4VmyzNKkxWOaP/db8kWNiR1j37QAhgfTXKh4a31MruVNE0CeWz3ah7GlA9gDAtZkVtWr9grFRVKyM/fbhXZIm1hHALL0K4udn5PjkVJsuvA+mjOY6Xrsnh8dMDZ5TfY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762812033; c=relaxed/simple; bh=5ilf5cNnuohitDR46Y8dkzBAopZhR1YtL7FpueMdWhQ=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=AjCCF9EuYwtfe6UiNwczNtLZUmGkKIOPc4RCVZ/9TwTub7tfs66uFznUhhdNsRW4qcv7z8xMlOF9bQcieh2DmHY9t9lfWon9H4DkOwiDGheEHvEgH4daWpvUCjIxsPSlQf8gFdWc3r4j5PKM9qvzCiMq0Q0tBEyz/usS9IlZTZo= 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=209.85.166.77 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-io1-f77.google.com with SMTP id ca18e2360f4ac-9489bfaef15so201626039f.1 for ; Mon, 10 Nov 2025 14:00:31 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762812031; x=1763416831; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Ad7jqqUSpHLSBaI5VXp+X0Xj58YZn6vBrxghlB0xHXk=; b=ejnhOOIexCw7hTpZCeUdzWRS23pEVkFA/PEsVJpu7jIor6zuRklQMIj+W2yStOmyWD eMzDOIya/AMaqD3yfpqA+ZyEe1ss7ELXnR0dJkfeV5d6JS2EHcnk06JhAQEy0ZGwn0oS p5oshbLXHbzbNF0/pCv3i8H3Wzc6jKFiEZZBtcDFxhcPqyyMcaWCjNLZnIXgSwu6wdHM 4r8ZU5Wslkkt3y1M1RJ71s1kyqF679ASf97Ae905G1WPZJv/gaBpdUIUwcJKXyMjXsV9 Jw1MLQLfgbYfi6IIbrQVHQnEImhVcF/dovfawtfh1NHNVYnN+BR5mPAq3AA2ZFl+n8Cr dPZQ== X-Forwarded-Encrypted: i=1; AJvYcCU1jINx3PoA8YkS36FVfZqMcKc0rOyDRzWJPz0Jc6bBXoiCmNfge7fn3irBstA/fWlWd3K6oJ7T6c+2gTY=@vger.kernel.org X-Gm-Message-State: AOJu0Yx2J+dAIGYFWH295NEuAeC8NRaEQPXihjmufZsI7tlJNiGcIQRG qSHmLHCiz2enXcjpUhPVfqRXlmfMHonsK9iQUeu7tbbauU1t+GuJ3w58Lf6iDoDLgJRAW2fNQq0 Gv8UjJQte8LHSczN/rKgiwFCzGLYS+uqLNlratayUQO10ELUVAmVh5n+LEGI= X-Google-Smtp-Source: AGHT+IEPRm99bTmbdnpgLqT88YQjdbSg0DKp1PfqCj7hzlOEjIkSPPgRALpDdQ+cvh9i9ZyRQvzWBL3IGaTZtaUZwziphBg4fMkO Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1fc3:b0:431:d7da:ee29 with SMTP id e9e14a558f8ab-43367e79e87mr111463385ab.28.1762812030970; Mon, 10 Nov 2025 14:00:30 -0800 (PST) Date: Mon, 10 Nov 2025 14:00:30 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6912607e.a70a0220.22f260.010f.GAE@google.com> Subject: [syzbot] [wireless?] WARNING in _ieee80211_change_chanctx (2) 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: dcb6fa37fd7b Linux 6.18-rc3 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=14e07812580000 kernel config: https://syzkaller.appspot.com/x/.config?x=b8b659f0cab27b22 dashboard link: https://syzkaller.appspot.com/bug?extid=e785ad5c3cc8ca31eeac 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/ae6bec0d0398/disk-dcb6fa37.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/dcc732da66c3/vmlinux-dcb6fa37.xz kernel image: https://storage.googleapis.com/syzbot-assets/301d1bbdecc2/Image-dcb6fa37.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e785ad5c3cc8ca31eeac@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 17489 at net/mac80211/chan.c:544 _ieee80211_change_chanctx+0x25c/0x10f4 net/mac80211/chan.c:544 Modules linked in: CPU: 0 UID: 0 PID: 17489 Comm: syz.1.3194 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : _ieee80211_change_chanctx+0x25c/0x10f4 net/mac80211/chan.c:544 lr : _ieee80211_change_chanctx+0x25c/0x10f4 net/mac80211/chan.c:544 sp : ffff8000991c67c0 x29: ffff8000991c68e0 x28: 0000000000000006 x27: dfff800000000000 x26: 0000000000000006 x25: ffff0000f6909800 x24: ffff8000991c69c0 x23: ffff0000f69098b0 x22: ffff0000d52b3398 x21: 0000000000000000 x20: ffff0000f6909800 x19: ffff0000d52b0e80 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80008052a444 x15: 0000000000000005 x14: 0000000000000002 x13: 000000000000000d x12: 0000000000ff0100 x11: 0000000000080000 x10: 0000000000003423 x9 : ffff8000a5ddb000 x8 : 0000000000003424 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff8000991c6a10 x4 : 0000000000000000 x3 : ffff8000991c69c0 x2 : ffff0000f6909800 x1 : ffff800092ae0f10 x0 : 0000000000000006 Call trace: _ieee80211_change_chanctx+0x25c/0x10f4 net/mac80211/chan.c:544 (P) ieee80211_change_chanctx net/mac80211/chan.c:590 [inline] ieee80211_recalc_chanctx_chantype+0xcec/0xdf4 net/mac80211/chan.c:865 ieee80211_vif_use_reserved_switch+0x1470/0x22b0 net/mac80211/chan.c:1763 ieee80211_link_use_reserved_context+0x2e8/0x4ec net/mac80211/chan.c:2017 __ieee80211_csa_finalize net/mac80211/cfg.c:4114 [inline] ieee80211_csa_finalize+0x464/0xf08 net/mac80211/cfg.c:4145 __ieee80211_channel_switch net/mac80211/cfg.c:4424 [inline] ieee80211_channel_switch+0x834/0xa40 net/mac80211/cfg.c:4439 rdev_channel_switch+0x124/0x300 net/wireless/rdev-ops.h:1116 nl80211_channel_switch+0x8d8/0xb18 net/wireless/nl80211.c:11476 genl_family_rcv_msg_doit+0x1d8/0x2bc net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x450/0x624 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x220/0x3fc net/netlink/af_netlink.c:2552 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x694/0x8c4 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x648/0x930 net/netlink/af_netlink.c:1896 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_sendmsg net/socket.c:2716 [inline] __do_sys_sendmsg net/socket.c:2721 [inline] __se_sys_sendmsg net/socket.c:2719 [inline] __arm64_sys_sendmsg+0x184/0x238 net/socket.c:2719 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c 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:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 772 hardirqs last enabled at (771): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (772): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434 softirqs last enabled at (732): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (732): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (693): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]--- --- 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