From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f78.google.com (mail-io1-f78.google.com [209.85.166.78]) (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 2F17025487B for ; Tue, 27 May 2025 13:16:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748351801; cv=none; b=oGt7J6utKm3YlIKj8P37onv6tEGtF2prlXp5cLop8ziNr5HEiikqPV6hySRgmuLGsVhswvEdtfUUsCDs+xqD7P+Hiewb08J9KQc2wCu/ThKZy3897wu9qH/5qfemRVdBGLQNoboYhtQVMu2w/aJ05H4l8c5zXfVQ+Iy8UXigGSY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748351801; c=relaxed/simple; bh=toUL8kVmIYUpj+yHbWybTCF9PrGAGvHavC8vMENX1Lc=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=c3c6SL86w2f3q4ntmqKunf3Eb/fClzYVFw5qI/2GASk8FaTd/8FRz6XyIKR7u/cb0VI1PRLv4dVLaIBIDGzxWMpsd6Mxo04uOPkw6/+T9nwee1WV8ChKqGJjaOgZ0g06U0XoKqNB9CO6QF40u7gXu7/NQ1EHoatL8L35SiAWeEs= 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=209.85.166.78 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-f78.google.com with SMTP id ca18e2360f4ac-85b3b781313so639721639f.1 for ; Tue, 27 May 2025 06:16:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748351799; x=1748956599; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=3fs5dnMU+gfL+8rHwXU1x0X13W7OhQWWELJjNHVdrCg=; b=poskDHlt+doZeJeZtvcFilaSx6MKR227VAuJDaQvhs9GDtuXi+Zzwt9X04+9df+Mc2 Z9slWdKwPglebxeVjuEQEWhKKT4lNSM44Y6RmgZmM6aOSCxgaP2fIn3vZmTkzeeQrtv/ HHHOiYDeiwDqvPjmOOwgRtRMXDwIG978FSRLTcAB4WJz5hMSskMsI9VFUyQGp4xi5QKw LMwSqQwP4EZ0aE6vCkYDAY9pqcYKiQ4BzJyV7tSo1XCeZFoHN0GCXWUuu4XHgY+4k7Tp CCEBopTqsbI0tYbAQ8+LVL8AEjMhSPfMrva/wFk3V5+4sBoBPFJU48dSiI7rvYAaq7TB 1n7A== X-Forwarded-Encrypted: i=1; AJvYcCX57zxfX41rAYgl5DxolATWrqpbMN7HbF1YqgI2HPlGu9qIDhRy4Bf85DZkXwRSLaXQvtedXz1egBykYF2mRg==@vger.kernel.org X-Gm-Message-State: AOJu0Yw7To7ul3dhNf2aoH4wZARlLOL6c+/2BnYFOH2nygb0XUYm5dxk d5IKpgWYxTiVgwoRxqVuB2LDumU7B+6rc9VZW1+8S0cZBr07NjvNUlEkKoP51Z3zDwFbjTRYTI1 KLsci4+yD+5MRn2WY3Nap9nzyjVNgJuU3We7ByhE+HUMPAjLXhYOzEcoGxdI= X-Google-Smtp-Source: AGHT+IHGRO3kfgMQ7ar84SSI3p4GXHmcWFk1okctqv4PnTzlS/IVJ68utuAAcATo9JvhtFOp2pFWI5TrCwJ/6xpePsNeqY2hvqL1 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:7211:b0:864:a1e9:f07 with SMTP id ca18e2360f4ac-86cbb80a7ecmr1620366539f.8.1748351799241; Tue, 27 May 2025 06:16:39 -0700 (PDT) Date: Tue, 27 May 2025 06:16:39 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6835bb37.a70a0220.253bc2.00b4.GAE@google.com> Subject: [syzbot] [wireless?] KMSAN: uninit-value in ieee80211_amsdu_to_8023s (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: 94305e83eccb Merge tag 'pmdomain-v6.15-rc3' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16c9c170580000 kernel config: https://syzkaller.appspot.com/x/.config?x=a423536a47898618 dashboard link: https://syzkaller.appspot.com/bug?extid=3d9e2c65bdd43a254924 compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/82a518437203/disk-94305e83.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e1b8b32ab132/vmlinux-94305e83.xz kernel image: https://storage.googleapis.com/syzbot-assets/1743502cacb0/bzImage-94305e83.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3d9e2c65bdd43a254924@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in ieee80211_get_8023_tunnel_proto net/wireless/util.c:543 [inline] BUG: KMSAN: uninit-value in ieee80211_amsdu_to_8023s+0x2226/0x2a40 net/wireless/util.c:897 ieee80211_get_8023_tunnel_proto net/wireless/util.c:543 [inline] ieee80211_amsdu_to_8023s+0x2226/0x2a40 net/wireless/util.c:897 __ieee80211_rx_h_amsdu+0x902/0x1400 net/mac80211/rx.c:3078 ieee80211_rx_h_amsdu net/mac80211/rx.c:3164 [inline] ieee80211_rx_handlers+0x5b21/0x12440 net/mac80211/rx.c:4146 ieee80211_invoke_rx_handlers net/mac80211/rx.c:4190 [inline] ieee80211_prepare_and_rx_handle+0x4c39/0x9ce0 net/mac80211/rx.c:5040 __ieee80211_rx_handle_packet net/mac80211/rx.c:5245 [inline] ieee80211_rx_list+0x5f20/0x6120 net/mac80211/rx.c:5416 ieee80211_rx_napi+0x84/0x400 net/mac80211/rx.c:5439 ieee80211_rx include/net/mac80211.h:5179 [inline] ieee80211_handle_queued_frames+0x14f/0x350 net/mac80211/main.c:441 ieee80211_tasklet_handler+0x25/0x30 net/mac80211/main.c:460 tasklet_action_common+0x362/0xd70 kernel/softirq.c:829 tasklet_action+0x2d/0x40 kernel/softirq.c:855 handle_softirqs+0x169/0x6e0 kernel/softirq.c:579 __do_softirq+0x14/0x1b kernel/softirq.c:613 do_softirq+0x99/0x100 kernel/softirq.c:480 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:407 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:910 [inline] __dev_queue_xmit+0x2e5d/0x5e20 net/core/dev.c:4656 dev_queue_xmit include/linux/netdevice.h:3350 [inline] __netlink_deliver_tap_skb net/netlink/af_netlink.c:307 [inline] __netlink_deliver_tap+0x93b/0xdd0 net/netlink/af_netlink.c:325 netlink_deliver_tap net/netlink/af_netlink.c:338 [inline] __netlink_sendskb net/netlink/af_netlink.c:1256 [inline] netlink_sendskb+0x224/0x270 net/netlink/af_netlink.c:1265 netlink_unicast+0x746/0x1290 net/netlink/af_netlink.c:1354 nlmsg_unicast include/net/netlink.h:1162 [inline] netlink_ack+0xacc/0xf80 net/netlink/af_netlink.c:2496 netlink_rcv_skb+0x3f9/0x680 net/netlink/af_netlink.c:2540 genl_rcv+0x41/0x60 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0xed8/0x1290 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x10b3/0x1250 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x330/0x3d0 net/socket.c:727 __sys_sendto+0x590/0x710 net/socket.c:2180 __do_compat_sys_socketcall net/compat.c:-1 [inline] __se_compat_sys_socketcall net/compat.c:423 [inline] __ia32_compat_sys_socketcall+0xa89/0x1af0 net/compat.c:423 ia32_sys_call+0x41be/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:103 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369 entry_SYSENTER_compat_after_hwframe+0x84/0x8e Uninit was created at: slab_post_alloc_hook mm/slub.c:4153 [inline] slab_alloc_node mm/slub.c:4196 [inline] kmem_cache_alloc_node_noprof+0x818/0xf00 mm/slub.c:4248 kmalloc_reserve+0x13c/0x4b0 net/core/skbuff.c:577 __alloc_skb+0x347/0x7d0 net/core/skbuff.c:668 __netdev_alloc_skb+0x124/0x6a0 net/core/skbuff.c:732 netdev_alloc_skb include/linux/skbuff.h:3413 [inline] dev_alloc_skb include/linux/skbuff.h:3426 [inline] __ieee80211_amsdu_copy net/wireless/util.c:757 [inline] ieee80211_amsdu_to_8023s+0xcfa/0x2a40 net/wireless/util.c:885 __ieee80211_rx_h_amsdu+0x902/0x1400 net/mac80211/rx.c:3078 ieee80211_rx_h_amsdu net/mac80211/rx.c:3164 [inline] ieee80211_rx_handlers+0x5b21/0x12440 net/mac80211/rx.c:4146 ieee80211_invoke_rx_handlers net/mac80211/rx.c:4190 [inline] ieee80211_prepare_and_rx_handle+0x4c39/0x9ce0 net/mac80211/rx.c:5040 __ieee80211_rx_handle_packet net/mac80211/rx.c:5245 [inline] ieee80211_rx_list+0x5f20/0x6120 net/mac80211/rx.c:5416 ieee80211_rx_napi+0x84/0x400 net/mac80211/rx.c:5439 ieee80211_rx include/net/mac80211.h:5179 [inline] ieee80211_handle_queued_frames+0x14f/0x350 net/mac80211/main.c:441 ieee80211_tasklet_handler+0x25/0x30 net/mac80211/main.c:460 tasklet_action_common+0x362/0xd70 kernel/softirq.c:829 tasklet_action+0x2d/0x40 kernel/softirq.c:855 handle_softirqs+0x169/0x6e0 kernel/softirq.c:579 __do_softirq+0x14/0x1b kernel/softirq.c:613 CPU: 1 UID: 0 PID: 20119 Comm: syz.6.1299 Tainted: G W 6.15.0-rc7-syzkaller-00099-g94305e83eccb #0 PREEMPT(undef) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ===================================================== --- 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