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[147.75.199.223]) by mx.google.com with ESMTPS id d75a77b69052e-4411354203bsi32926611cf.399.2024.06.11.05.31.56 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Jun 2024 05:31:57 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel+bounces-209860-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) client-ip=147.75.199.223; Authentication-Results: mx.google.com; arc=pass (i=1 spf=pass spfdomain=m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com); spf=pass (google.com: domain of linux-kernel+bounces-209860-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) smtp.mailfrom="linux-kernel+bounces-209860-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id A9B741C20A5E for ; Tue, 11 Jun 2024 12:31:56 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 42E3E17B419; Tue, 11 Jun 2024 12:31:07 +0000 (UTC) Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (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 0C56217C20A for ; Tue, 11 Jun 2024 12:31:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718109065; cv=none; b=dMLdaROdbhCcCzplmJyTrhNHYWqsU0x8g6/D8ZwEXA44UCGa4CYqgwsxrVDu0GmFW2eDlEPBqpgzwYXefkp6DRAn/PtMiDiQkLvixvznug3k+VuxIJq9KWpz9jOoV2M8f63z7GdV4BYo3h5+y0uO66Rnyd48OsS8zuIEMxlXgSM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718109065; c=relaxed/simple; bh=+LpCxicgrpS1Y43PaCwxhuWi5NkmObyJ6Jey6DBbCuE=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=iFzR8YjiqDx05Fv0nSgCQlXR8g2yqsP67AGdEPwIEGs72I/VKGwW27rRR5D2lbHYDdTB9mWqS3FyJPtRHJdScUtSnWvw3ijXUN+eDB/XN9WkxZzJlHAghZc+gvXrxy5O2pvLrlF+ba70gmL30VG9KIpa8OBQ3qec84Af913rxDM= 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=209.85.166.198 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-il1-f198.google.com with SMTP id e9e14a558f8ab-375c390cedeso2781075ab.3 for ; Tue, 11 Jun 2024 05:31:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718109063; x=1718713863; h=content-transfer-encoding:to:from:subject:message-id:in-reply-to :date:mime-version:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=3iTBk5f04m+d8fEdI3p1kdZv8FluL/zH/1ktqP7Kduc=; b=BFE/AIsd82kHsYDgm81HYlxhwwOxhnmrT4gC3siEPNcGuO5GBrNxhHiiyDRQBZEzxN V6nsJxADajVSuv0bNKcjTRUqICcqUE8jheyzEKZroFJ74/58AVmUKbR6H7NbZY/83jJs Q/nt3+MshIvtzK2E7o2Q7FMOg3kPt2TiYR7xL6hO9jKIvN+Mzhlv4N2MssJfj/paexZA Kau6HBjXPw7EW1+kJBvFPTAv0BgfRUWHeIYmM44MxR5eFO59l81dbnGMsRB/aqJ/G8nM znqWAQJj3cUfwe6u1OBO4HtPXvItch9UVyDIUPdaulgglKNcZjdR9RGml1N8Trfx/ZX8 HTYw== X-Gm-Message-State: AOJu0YxO6YD6xH6Nxr+xfa+m9mmz9dXHKKh9z+tzuIeoQgp5Y7BCxFLE OW6AdSFa4NwQtuVad6gQGw27YOM8dOil8mm+N8de+q5JPm12WAW3BVCunIHmkpKeoaoKGk/LmeL WV5sbh63lk3tcauls6RqAi6kVBkzuP+eTNG729q8kOP3Uj0Tyqfv4MTE= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1a4c:b0:375:a202:2544 with SMTP id e9e14a558f8ab-375a2022843mr4369645ab.3.1718109063214; Tue, 11 Jun 2024 05:31:03 -0700 (PDT) Date: Tue, 11 Jun 2024 05:31:03 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000066065f061a9c7038@google.com> Subject: Re: [syzbot] [bpf?] KMSAN: uninit-value in htab_lru_percpu_map_lookup_percpu_elem From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, wojciech.gladysz@infogain.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot tried to test the proposed patch but the build/boot failed: tack depth: 8144 bytes left [ 55.419101][ T4450] EXT4-fs (sda1): re-mounted 5941fea2-f5fa-4b4e-b5ef-9= af118b27b95 r/w. Quota mode: none. mount: mounting smackfs on /sys/fs/smackfs failed: No such file or director= y mount: mounting selinuxfs on /sys/fs/selinux failed: No such file or direct= ory [ 55.779289][ T4453] mount (4453) used greatest stack depth: 5568 bytes l= eft Starting syslogd: OK Starting acpid: OK Starting klogd: OK Running sysctl: OK Populating /dev using udev: [ 59.585501][ T4483] udevd[4483]: starting ve= rsion 3.2.11 [ 63.130230][ T4484] udevd[4484]: starting eudev-3.2.11 [ 63.142629][ T4483] udevd (4483) used greatest stack depth: 5376 bytes l= eft [ 96.265218][ T1224] net_ratelimit: 2 callbacks suppressed [ 96.265294][ T1224] aoe: packet could not be sent on lo. consider incre= asing tx_queue_len [ 96.280260][ T1224] aoe: packet could not be sent on bond0. consider in= creasing tx_queue_len [ 96.289350][ T1224] aoe: packet could not be sent on dummy0. consider i= ncreasing tx_queue_len [ 96.298544][ T1224] aoe: packet could not be sent on eql. consider incr= easing tx_queue_len [ 96.307476][ T1224] aoe: packet could not be sent on ifb0. consider inc= reasing tx_queue_len [ 96.316489][ T1224] aoe: packet could not be sent on ifb1. consider inc= reasing tx_queue_len [ 96.325548][ T1224] aoe: packet could not be sent on eth0. consider inc= reasing tx_queue_len [ 96.334622][ T1224] aoe: packet could not be sent on wlan0. consider in= creasing tx_queue_len [ 96.343626][ T1224] aoe: packet could not be sent on wlan1. consider in= creasing tx_queue_len [ 96.352793][ T1224] aoe: packet could not be sent on hwsim0. consider i= ncreasing tx_queue_len done Starting system message bus: done Starting iptables: OK Starting network: OK Starting dhcpcd... dhcpcd-9.4.1 starting dev: loaded udev DUID 00:04:98:24:4c:28:99:7c:d9:70:fe:51:ca:fe:56:33:2c:7d forked to background, child pid 4696 [ 111.030473][ T4697] 8021q: adding VLAN 0 to HW filter on device bond0 [ 111.100696][ T4697] eql: remember to turn off Van-Jacobson compression o= n your slave devices [ 111.616746][ T10] cfg80211: failed to load regulatory.db Starting sshd: [ 113.281387][ T4783] sshd (4783) used greatest stack depth= : 4392 bytes left OK syzkaller syzkaller login: [ 114.141307][ C0] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D [ 114.148674][ C0] BUG: KMSAN: uninit-value in receive_buf+0x25e3/0x5fd= 0 [ 114.155836][ C0] receive_buf+0x25e3/0x5fd0 [ 114.160622][ C0] virtnet_poll+0xd1c/0x23c0 [ 114.165429][ C0] __napi_poll+0xe7/0x980 [ 114.170059][ C0] net_rx_action+0x82a/0x1850 [ 114.174955][ C0] handle_softirqs+0x1ce/0x800 [ 114.179889][ C0] __irq_exit_rcu+0x68/0x120 [ 114.184692][ C0] irq_exit_rcu+0x12/0x20 [ 114.189250][ C0] common_interrupt+0x94/0xa0 [ 114.194165][ C0] asm_common_interrupt+0x2b/0x40 [ 114.199461][ C0] virt_to_page_or_null+0xf0/0x150 [ 114.204769][ C0] kmsan_get_metadata+0x146/0x1d0 [ 114.209965][ C0] kmsan_get_shadow_origin_ptr+0x38/0xb0 [ 114.215799][ C0] __msan_metadata_ptr_for_load_8+0x24/0x40 [ 114.221887][ C0] is_last_task_frame+0x62/0x420 [ 114.227000][ C0] unwind_next_frame+0x9d/0x470 [ 114.231997][ C0] arch_stack_walk+0x1ec/0x2d0 [ 114.237029][ C0] stack_trace_save+0xaa/0xe0 [ 114.241881][ C0] kmsan_internal_chain_origin+0x57/0xd0 [ 114.247698][ C0] kmsan_internal_memmove_metadata+0x17b/0x230 [ 114.254063][ C0] __msan_memcpy+0x108/0x1c0 [ 114.258744][ C0] sock_write_iter+0x38e/0x3d0 [ 114.263898][ C0] vfs_write+0xb38/0x1550 [ 114.268406][ C0] ksys_write+0x20f/0x4c0 [ 114.272940][ C0] __x64_sys_write+0x93/0xe0 [ 114.277742][ C0] x64_sys_call+0x3093/0x3b90 [ 114.283323][ C0] do_syscall_64+0xcd/0x1e0 [ 114.288178][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 114.294332][ C0]=20 [ 114.296980][ C0] Uninit was created at: [ 114.301397][ C0] __alloc_pages_noprof+0x9d6/0xe70 [ 114.306908][ C0] alloc_pages_mpol_noprof+0x299/0x990 [ 114.312874][ C0] alloc_pages_noprof+0x1bf/0x1e0 [ 114.318109][ C0] skb_page_frag_refill+0x2bf/0x7c0 [ 114.323487][ C0] virtnet_rq_alloc+0x43/0xbb0 [ 114.328434][ C0] try_fill_recv+0x3f0/0x2f50 [ 114.333556][ C0] virtnet_open+0x1cc/0xb00 [ 114.338238][ C0] __dev_open+0x546/0x6f0 [ 114.342858][ C0] __dev_change_flags+0x309/0x9a0 [ 114.348074][ C0] dev_change_flags+0x8e/0x1d0 [ 114.353097][ C0] devinet_ioctl+0x13ec/0x22c0 [ 114.358127][ C0] inet_ioctl+0x4bd/0x6d0 [ 114.362784][ C0] sock_do_ioctl+0xb7/0x540 [ 114.367599][ C0] sock_ioctl+0x727/0xd70 [ 114.372193][ C0] __se_sys_ioctl+0x261/0x450 [ 114.377188][ C0] __x64_sys_ioctl+0x96/0xe0 [ 114.382012][ C0] x64_sys_call+0x18c0/0x3b90 [ 114.387389][ C0] do_syscall_64+0xcd/0x1e0 [ 114.392122][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 114.398360][ C0]=20 [ 114.400882][ C0] CPU: 0 PID: 4697 Comm: dhcpcd Not tainted 6.10.0-rc3= -syzkaller-00001-g956a9878a570 #0 [ 114.410797][ C0] Hardware name: Google Google Compute Engine/Google C= ompute Engine, BIOS Google 04/02/2024 [ 114.421038][ C0] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D [ 114.428277][ C0] Disabling lock debugging due to kernel taint [ 114.434617][ C0] Kernel panic - not syncing: kmsan.panic set ... [ 114.441168][ C0] CPU: 0 PID: 4697 Comm: dhcpcd Tainted: G B = 6.10.0-rc3-syzkaller-00001-g956a9878a570 #0 [ 114.452775][ C0] Hardware name: Google Google Compute Engine/Google C= ompute Engine, BIOS Google 04/02/2024 [ 114.462940][ C0] Call Trace: [ 114.466456][ C0] [ 114.469372][ C0] dump_stack_lvl+0x216/0x2d0 [ 114.474259][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 114.480223][ C0] dump_stack+0x1e/0x30 [ 114.484499][ C0] panic+0x4e2/0xcd0 [ 114.488493][ C0] ? kmsan_get_metadata+0x51/0x1d0 [ 114.493722][ C0] kmsan_report+0x2d5/0x2e0 [ 114.498385][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 114.504323][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.509625][ C0] ? __msan_warning+0x95/0x120 [ 114.514761][ C0] ? receive_buf+0x25e3/0x5fd0 [ 114.519656][ C0] ? virtnet_poll+0xd1c/0x23c0 [ 114.524559][ C0] ? __napi_poll+0xe7/0x980 [ 114.529199][ C0] ? net_rx_action+0x82a/0x1850 [ 114.534316][ C0] ? handle_softirqs+0x1ce/0x800 [ 114.539583][ C0] ? __irq_exit_rcu+0x68/0x120 [ 114.544544][ C0] ? irq_exit_rcu+0x12/0x20 [ 114.549164][ C0] ? common_interrupt+0x94/0xa0 [ 114.554156][ C0] ? asm_common_interrupt+0x2b/0x40 [ 114.559485][ C0] ? virt_to_page_or_null+0xf0/0x150 [ 114.564878][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.570183][ C0] ? kmsan_get_shadow_origin_ptr+0x38/0xb0 [ 114.576101][ C0] ? __msan_metadata_ptr_for_load_8+0x24/0x40 [ 114.582270][ C0] ? is_last_task_frame+0x62/0x420 [ 114.587529][ C0] ? unwind_next_frame+0x9d/0x470 [ 114.592633][ C0] ? arch_stack_walk+0x1ec/0x2d0 [ 114.597935][ C0] ? stack_trace_save+0xaa/0xe0 [ 114.602932][ C0] ? kmsan_internal_chain_origin+0x57/0xd0 [ 114.609058][ C0] ? kmsan_internal_memmove_metadata+0x17b/0x230 [ 114.615513][ C0] ? __msan_memcpy+0x108/0x1c0 [ 114.620375][ C0] ? sock_write_iter+0x38e/0x3d0 [ 114.625423][ C0] ? vfs_write+0xb38/0x1550 [ 114.630144][ C0] ? ksys_write+0x20f/0x4c0 [ 114.634752][ C0] ? __x64_sys_write+0x93/0xe0 [ 114.639611][ C0] ? x64_sys_call+0x3093/0x3b90 [ 114.644574][ C0] ? do_syscall_64+0xcd/0x1e0 [ 114.649357][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 114.655580][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.661089][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.666460][ C0] ? page_to_skb+0xdae/0x1620 [ 114.671465][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.676893][ C0] __msan_warning+0x95/0x120 [ 114.681587][ C0] receive_buf+0x25e3/0x5fd0 [ 114.686629][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.692034][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 114.697966][ C0] virtnet_poll+0xd1c/0x23c0 [ 114.702687][ C0] ? __pfx_virtnet_poll+0x10/0x10 [ 114.707811][ C0] __napi_poll+0xe7/0x980 [ 114.712253][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.717564][ C0] net_rx_action+0x82a/0x1850 [ 114.722441][ C0] ? sched_clock_cpu+0x55/0x870 [ 114.727421][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 114.732628][ C0] handle_softirqs+0x1ce/0x800 [ 114.737611][ C0] __irq_exit_rcu+0x68/0x120 [ 114.742301][ C0] irq_exit_rcu+0x12/0x20 [ 114.746720][ C0] common_interrupt+0x94/0xa0 [ 114.751524][ C0] [ 114.754533][ C0] [ 114.757619][ C0] asm_common_interrupt+0x2b/0x40 [ 114.762781][ C0] RIP: 0010:virt_to_page_or_null+0xf0/0x150 [ 114.768821][ C0] Code: f6 c0 08 75 15 48 c1 ea 15 48 8b 76 08 83 e2 3= f 31 c9 48 0f a3 56 10 0f 92 c1 65 ff 0d 11 43 c5 7d 74 4d 65 ff 0d 08 43 c= 5 7d <85> c9 0f 84 3b ff ff ff 48 81 ff 00 00 00 80 72 09 48 8b 0d 78 74 [ 114.788641][ C0] RSP: 0018:ffff8881160076b0 EFLAGS: 00000286 [ 114.794817][ C0] RAX: ffff888194a30020 RBX: ffff888114a30020 RCX: 000= 0000000000001 [ 114.802961][ C0] RDX: 0000000114a30020 RSI: ffff88813fff9220 RDI: fff= f888114a30020 [ 114.811014][ C0] RBP: ffff8881160076b0 R08: ffffea000000000f R09: fff= f888116004000 [ 114.819084][ C0] R10: ffff888116007818 R11: ffffffff81935550 R12: 000= 0000000000000 [ 114.827135][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: fff= f888114a30020 [ 114.835190][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 114.841475][ C0] kmsan_get_metadata+0x146/0x1d0 [ 114.846629][ C0] kmsan_get_shadow_origin_ptr+0x38/0xb0 [ 114.852370][ C0] __msan_metadata_ptr_for_load_8+0x24/0x40 [ 114.858386][ C0] is_last_task_frame+0x62/0x420 [ 114.863429][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 114.869401][ C0] unwind_next_frame+0x9d/0x470 [ 114.874444][ C0] arch_stack_walk+0x1ec/0x2d0 [ 114.879348][ C0] ? do_syscall_64+0xcd/0x1e0 [ 114.884168][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 114.890569][ C0] stack_trace_save+0xaa/0xe0 [ 114.895448][ C0] kmsan_internal_chain_origin+0x57/0xd0 [ 114.901315][ C0] ? kmsan_internal_chain_origin+0x57/0xd0 [ 114.907242][ C0] ? kmsan_internal_memmove_metadata+0x17b/0x230 [ 114.913797][ C0] ? __msan_memcpy+0x108/0x1c0 [ 114.918732][ C0] ? sock_write_iter+0x38e/0x3d0 [ 114.923798][ C0] ? vfs_write+0xb38/0x1550 [ 114.928458][ C0] ? ksys_write+0x20f/0x4c0 [ 114.933071][ C0] ? __x64_sys_write+0x93/0xe0 [ 114.937962][ C0] ? x64_sys_call+0x3093/0x3b90 [ 114.943128][ C0] ? do_syscall_64+0xcd/0x1e0 [ 114.947923][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.953292][ C0] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 114.959771][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.965109][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.970431][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 114.976472][ C0] ? unix_dgram_sendmsg+0xd93/0x2ce0 [ 114.981868][ C0] ? aa_sk_perm+0x881/0xd90 [ 114.986487][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.991792][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 114.997731][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 115.003121][ C0] kmsan_internal_memmove_metadata+0x17b/0x230 [ 115.009411][ C0] __msan_memcpy+0x108/0x1c0 [ 115.014216][ C0] sock_write_iter+0x38e/0x3d0 [ 115.019109][ C0] vfs_write+0xb38/0x1550 [ 115.023542][ C0] ? __pfx_sock_write_iter+0x10/0x10 [ 115.029014][ C0] ksys_write+0x20f/0x4c0 [ 115.033533][ C0] __x64_sys_write+0x93/0xe0 [ 115.038236][ C0] x64_sys_call+0x3093/0x3b90 [ 115.043164][ C0] do_syscall_64+0xcd/0x1e0 [ 115.047796][ C0] ? clear_bhb_loop+0x25/0x80 [ 115.052625][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 115.058663][ C0] RIP: 0033:0x7f96e0e10bf2 [ 115.063173][ C0] Code: 89 c7 48 89 44 24 08 e8 7b 34 fa ff 48 8b 44 2= 4 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 01 00 00 00 0= f 05 <48> 3d 00 f0 ff ff 76 6f 48 8b 15 07 a2 0d 00 f7 d8 64 89 02 48 83 [ 115.082994][ C0] RSP: 002b:00007fffc25d6c88 EFLAGS: 00000246 ORIG_RAX= : 0000000000000001 [ 115.091610][ C0] RAX: ffffffffffffffda RBX: 00007f96e0eec4c0 RCX: 000= 07f96e0e10bf2 [ 115.099666][ C0] RDX: 0000000000000020 RSI: 00005598f18db020 RDI: 000= 0000000000002 [ 115.108056][ C0] RBP: 0000000000000020 R08: 0000000000000000 R09: 000= 0000000000000 [ 115.116367][ C0] R10: 00007fffc25d7a50 R11: 0000000000000246 R12: 000= 0000000000020 [ 115.124456][ C0] R13: 00005598f18db020 R14: 0000000000000000 R15: 000= 0000000000000 [ 115.132580][ C0] [ 115.136102][ C0] Kernel Offset: disabled [ 115.140501][ C0] Rebooting in 86400 seconds.. syzkaller build log: go env (err=3D) GO111MODULE=3D'auto' GOARCH=3D'amd64' GOBIN=3D'' GOCACHE=3D'/syzkaller/.cache/go-build' GOENV=3D'/syzkaller/.config/go/env' GOEXE=3D'' GOEXPERIMENT=3D'' GOFLAGS=3D'' GOHOSTARCH=3D'amd64' GOHOSTOS=3D'linux' GOINSECURE=3D'' GOMODCACHE=3D'/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY=3D'' GONOSUMDB=3D'' GOOS=3D'linux' GOPATH=3D'/syzkaller/jobs-2/linux/gopath' GOPRIVATE=3D'' GOPROXY=3D'https://proxy.golang.org,direct' GOROOT=3D'/usr/local/go' GOSUMDB=3D'sum.golang.org' GOTMPDIR=3D'' GOTOOLCHAIN=3D'auto' GOTOOLDIR=3D'/usr/local/go/pkg/tool/linux_amd64' GOVCS=3D'' GOVERSION=3D'go1.21.4' GCCGO=3D'gccgo' GOAMD64=3D'v1' AR=3D'ar' CC=3D'gcc' CXX=3D'g++' CGO_ENABLED=3D'1' GOMOD=3D'/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.= mod' GOWORK=3D'' CGO_CFLAGS=3D'-O2 -g' CGO_CPPFLAGS=3D'' CGO_CXXFLAGS=3D'-O2 -g' CGO_FFLAGS=3D'-O2 -g' CGO_LDFLAGS=3D'-O2 -g' PKG_CONFIG=3D'pkg-config' GOGCCFLAGS=3D'-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=3D0= -ffile-prefix-map=3D/tmp/go-build3221393454=3D/tmp/go-build -gno-record-gc= c-switches' git status (err=3D) HEAD detached at c8349e4853 nothing to commit, working tree clean tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contribut= ing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sy= s/syz-sysgen make .descriptions tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contribut= ing.md#using-syz-env bin/syz-sysgen touch .descriptions GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3Dc8349e48534ea6d8f01515335d95de8ebf5da8df -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20240412-102842'" "-tags= =3Dsyz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer= github.com/google/syzkaller/syz-fuzzer GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3Dc8349e48534ea6d8f01515335d95de8ebf5da8df -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20240412-102842'" "-tags= =3Dsyz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execpr= og github.com/google/syzkaller/tools/syz-execprog GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3Dc8349e48534ea6d8f01515335d95de8ebf5da8df -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20240412-102842'" "-tags= =3Dsyz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress= github.com/google/syzkaller/tools/syz-stress mkdir -p ./bin/linux_amd64 gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \ -m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wfr= ame-larger-than=3D16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-forma= t-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -= static-pie -fpermissive -w -DGOOS_linux=3D1 -DGOARCH_amd64=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"c8349e48534ea6d8f01515335d95de8ebf= 5da8df\" Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=3D1344182e980000 Tested on: commit: 956a9878 kernel/bpf: KMSAN: uninit-value in htab_lru_p.. git tree: https://linux.googlesource.com/linux/kernel/git/torvalds/li= nux kernel config: https://syzkaller.appspot.com/x/.config?x=3D3486f1660f47f85= 5 dashboard link: https://syzkaller.appspot.com/bug?extid=3D1971e47e5210c718d= b3c compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debia= n) 2.40 Note: no patches were applied.