From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f198.google.com (mail-oi1-f198.google.com [209.85.167.198]) (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 1719E33B961 for ; Sun, 18 Oct 2026 02:07:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792289250; cv=none; b=BDU0mJ+A5nrwmf7ZDZKkCP1WNFm4bi+X2sJWsrPO8CPe4q91xsFOufV+G3qxXEJGuVC+nMpDBSWbu3Bwisnw62/enOgbhPmVDqaBTG2j0/jVQWU7p1ZFhVyRwkkEbC5IiN92Eqjes3hvOtKgG7+YrcyVCQ0zsml87xAlMysartI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792289250; c=relaxed/simple; bh=ouG0aROo23jJT+b2EJuNYxdAFVWVj46OHqNHv8ixEIo=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=gVbYeZtfJ9DXPt1lGk2QTGXIkrgUC1GRPLwyN4f5eQ+5HafeGTYrGHe1YElwBy2DSS1ruLdk7S7sRC36qZgo+N9uaRsFVnW+2wnvuuVx/jtafPz8ZY25lr56DQ6OL2+cmqAa7hVkiJr4HKqc4TAqFEqdKWuif42d7Lhdmngt4aA= 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=209.85.167.198 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-oi1-f198.google.com with SMTP id 5614622812f47-4c307941971so1950656b6e.1 for ; Sat, 17 Oct 2026 19:07:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1792289246; x=1792894046; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=J+ubYti4JhivmOi5yI812OU6maljYefXbpcBPFcPR84=; b=ee4L6sRon4putINYz8bOeaQyZ8XN3W8RgwqR7Zntthn6yo8wcm4wjmPkc5rgSey2c1 Qo47IT+K2gwcaAZ7dvmK/QIZv7XZUDBoxQbh4hPIxAIYvcapGPycNIDB02ocwBbCH3ri DfowQtnZQSS3duVYORvBtmlmyC0nmKgahxKieamzHzoJTFcYTPRH5JPsiN71YxsutS9g 6580WR9X9xNMJCT4lWnl1laISjdhP+kaQQkaGnKXMcn+YzE3dA8Lx8WsySDyM+dC/Qba taO7vbOllowRNyItzFKPAEUnKtWMd+mHjBYP4uzZG5/jmjlcys7+tEC9q4MQRMDgMSgJ g3mQ== X-Forwarded-Encrypted: i=1; AKwUvBzwtNm8vu65mXujonyZuwNC15KGtVneXkLLZILnTYzaKYUeEX9xKZA7iuj5j9kKZ8dMQNqf9m0=@vger.kernel.org X-Gm-Message-State: AFq9FYJkQH04KHbKo9xUlWWlbuaTe6khbstdW92hewfKaodIfyWQPPlb MY0cu4FQZvgThMuXdq2mUV0Vwvy2rsU8t6riu5N5by6PuQiuIe3gpYob+0gw3SK4GTT4lwCFpQM TAcDH5XFISG3Me8TSuVcQZI7e3/zM+6x69U4hEhtZtLxRBvKTHwLw9wrjI3w= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:3384:b0:4fc:5e91:5377 with SMTP id 5614622812f47-53cd7d48d45mr3830438b6e.59.1792289246089; Sat, 17 Oct 2026 19:07:26 -0700 (PDT) Date: Sat, 17 Oct 2026 19:07:26 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ad429de.7f4e89eb.3d59aa.00a8.GAE@google.com> Subject: [syzbot] [tipc?] kernel BUG in pskb_expand_head (6) From: syzbot To: jmaloy@redhat.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, tipc-discussion@lists.sourceforge.net Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 2f2f7eeef8b0 Merge tag 'soc-fixes-7.3-3' of git://git.kern.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=141aa69c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c4b098695335c89f dashboard link: https://syzkaller.appspot.com/bug?extid=0017742620a9d06f06ef compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1250efd1580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0017742620a9d06f06ef@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:2308! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 5940 Comm: syz-executor216 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 RIP: 0010:pskb_expand_head+0x135a/0x13a0 net/core/skbuff.c:2308 Code: e9 10 f3 ff ff e8 76 06 1b f8 4c 89 e7 48 c7 c6 80 0c 23 8d e8 97 19 7b f7 90 0f 0b e8 5f 06 1b f8 90 0f 0b e8 57 06 1b f8 90 <0f> 0b 89 d1 80 e1 07 80 c1 03 38 c1 0f 8c d8 fa ff ff 48 8b 3c 24 RSP: 0018:ffffc90000007520 EFLAGS: 00010246 RAX: ffffffff89ad0a29 RBX: dffffc0000000000 RCX: ffff88802a490000 RDX: 8000000000000100 RSI: 0000000000000100 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000100 R09: 1ffff1100e875c3a R10: dffffc0000000000 R11: ffffed100e875c3b R12: 0000000000000820 R13: 0000000000000000 R14: 0000000000000002 R15: ffff8880743ae0f0 FS: 000055557b02f400(0000) GS:ffff888123abf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff61507fa8 CR3: 000000007506a000 CR4: 00000000003526f0 Call Trace: __pskb_pull_tail+0x111/0x1870 net/core/skbuff.c:2890 skb_cow_data+0x2ed/0xc50 net/core/skbuff.c:5398 tipc_aead_decrypt net/tipc/crypto.c:892 [inline] tipc_crypto_rcv+0x346/0x23d0 net/tipc/crypto.c:1843 tipc_rcv+0x4b7/0x1040 net/tipc/node.c:2119 tipc_l2_rcv_msg+0x2d9/0x470 net/tipc/bearer.c:669 deliver_ptype_list_skb net/core/dev.c:2533 [inline] __netif_receive_skb_core+0x2988/0x30c0 net/core/dev.c:6254 __netif_receive_skb_one_core net/core/dev.c:6295 [inline] __netif_receive_skb net/core/dev.c:6410 [inline] process_backlog+0x727/0x18b0 net/core/dev.c:6761 __napi_poll+0xaa/0x330 net/core/dev.c:7830 napi_poll net/core/dev.c:7893 [inline] net_rx_action+0x61d/0xf50 net/core/dev.c:8050 handle_softirqs+0x226/0x860 kernel/softirq.c:645 do_softirq+0x77/0xd0 kernel/softirq.c:546 __local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:923 [inline] __dev_queue_xmit+0x1efb/0x3920 net/core/dev.c:4993 dev_queue_xmit include/linux/netdevice.h:3464 [inline] tipc_l2_send_msg+0x331/0x400 net/tipc/bearer.c:517 tipc_bearer_xmit_skb+0x2b3/0x400 net/tipc/bearer.c:576 tipc_enable_bearer net/tipc/bearer.c:366 [inline] __tipc_nl_bearer_enable+0x10ec/0x1480 net/tipc/bearer.c:1048 tipc_nl_bearer_enable+0x22/0x40 net/tipc/bearer.c:1057 genl_family_rcv_msg_doit+0x233/0x340 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x614/0x7a0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2579 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1338 [inline] netlink_unicast+0x8ef/0xa80 net/netlink/af_netlink.c:1364 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1923 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800 __sock_sendmsg net/socket.c:815 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2281 __do_sys_sendto net/socket.c:2288 [inline] __se_sys_sendto net/socket.c:2284 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2284 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f091b73dcf7 Code: 48 89 fa 4c 89 df e8 98 1d 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007fff615088d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000055557b02f400 RCX: 00007f091b73dcf7 RDX: 0000000000000028 RSI: 00007fff61509950 RDI: 0000000000000005 RBP: 0000000000000005 R08: 00007fff61508924 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000005 R13: 00007f091b77b018 R14: 00007f091b7a2cc0 R15: 0000000000000002 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:pskb_expand_head+0x135a/0x13a0 net/core/skbuff.c:2308 Code: e9 10 f3 ff ff e8 76 06 1b f8 4c 89 e7 48 c7 c6 80 0c 23 8d e8 97 19 7b f7 90 0f 0b e8 5f 06 1b f8 90 0f 0b e8 57 06 1b f8 90 <0f> 0b 89 d1 80 e1 07 80 c1 03 38 c1 0f 8c d8 fa ff ff 48 8b 3c 24 RSP: 0018:ffffc90000007520 EFLAGS: 00010246 RAX: ffffffff89ad0a29 RBX: dffffc0000000000 RCX: ffff88802a490000 RDX: 8000000000000100 RSI: 0000000000000100 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000100 R09: 1ffff1100e875c3a R10: dffffc0000000000 R11: ffffed100e875c3b R12: 0000000000000820 R13: 0000000000000000 R14: 0000000000000002 R15: ffff8880743ae0f0 FS: 000055557b02f400(0000) GS:ffff888123abf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff61507fa8 CR3: 000000007506a000 CR4: 00000000003526f0 --- This report is generated by a bot. 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