From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (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 046002B9B0 for ; Sat, 17 Aug 2024 19:12:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723921941; cv=none; b=RwdpQqncuptNDEc8RmnumiLLIjlga9bbX+k9xn0HTr6/Ha8tKzlqFt0xagneu57gjyDb4PGTq//40yRjRbXSdkTOhYI9ochf/Hxe2kaaOmDecrSShbtnfPG+epFdZksE7FCiGEW+aqZuGkUEUn79Vi591vbeWZHacYBLglsCTW0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723921941; c=relaxed/simple; bh=2blOF0KfiMK8U6H4ERCzY5ZT5I8lnCEfrvSQMtyIblw=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=UgIiCnqEOtEUjFiSVUDQAHcnZE1l4nr/AIw3q+jTb5BMI3at1lCTAdnS2KdRjeHeJ8zKEmrjJJXnsCCVAOP0qJzNaijRgjycEpYDzS+x1R97RhoODIYS6var01EKrTo4DwLc5Gt9vDfjx2v3KEWwSG4J9/FVhfVyNaiaSMGa80Q= 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=209.85.166.72 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-io1-f72.google.com with SMTP id ca18e2360f4ac-81f9504974dso300873339f.2 for ; Sat, 17 Aug 2024 12:12:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723921939; x=1724526739; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=cFD6qD3rW7rnczddHSWMIFzVoUEuhzzFjSw0LeSwMMw=; b=FGIsrVb/lCQvfWBC4KmwHrK07ObV52/Mn5dkEe453SMvBVOTfda7kNzWbhcBxV0ge1 ycRPJU4IOC9IuX75xsCeYboOPWYJ+Xm8pJ0bYzVDIQRHpZVx13mZT9emi1yz3VERzR1H q77RKAJi0U5QMi9MtSo1Xp7UZqpnZLMeF3O6uFLMSvyC0VmQcCSUnJLWiI4HE3fgOFHN fWx0OjAV9xvrY3gwwCEV4TNOLAxrsbqOQJiyRxVcgX2STDCPnMGNV4LGjGo2CzXxX09e XtCfiTVbqMWmqhoh6UsJLrPC/SRoEfaZxP7EVFuynoaqVcXlLNhZIe6DAzpfyHD1KSDw hzFQ== X-Forwarded-Encrypted: i=1; AJvYcCUXdqMyLdUqWIxFOnxICP195vCgiNH86ZryRB0FcipS3qGbUu9s8PHdwtv5mGT7HkrWxXlFB/ppCC3ZaRa58DkvngXAFDqa X-Gm-Message-State: AOJu0YxjlPQfUa66erYoCIkMQm1pIH9yU20UMhg3ZygQ6Vpab0MNAJ8Z NmpFB1cib7btYz+VgZtewce0rpMO1Ubks5a3zK/kdVEt1Wmv5ZwAYv3vtxlNPXM32FDVvZIygb5 vtaIs3c0cTrIDUjo0rmQNzcD+Z35ddKS1y2pPayRx8JTcmR+09PvB/ic= X-Google-Smtp-Source: AGHT+IF0wTvBx1DMrk6Zb/Z59M/+HgGT2o0S3T1WngXZACmjCkagJp73hpLQvL3Bi6CLsFNA74eNSgCwZfZqJFshrZNqrbnkO9S7 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:2182:b0:4c2:7f96:6f4 with SMTP id 8926c6da1cb9f-4cce16d0113mr300497173.4.1723921939086; Sat, 17 Aug 2024 12:12:19 -0700 (PDT) Date: Sat, 17 Aug 2024 12:12:19 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ccd0fc061fe5dab8@google.com> Subject: [syzbot] [wireless?] KASAN: slab-out-of-bounds Read in cfg80211_wext_freq (2) From: syzbot To: davem@davemloft.net, edumazet@google.com, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 8867bbd4a056 mm: arm64: Fix the out-of-bounds issue in con.. 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=159bd409980000 kernel config: https://syzkaller.appspot.com/x/.config?x=1bc88a9f65787e86 dashboard link: https://syzkaller.appspot.com/bug?extid=ad5a1b5c1c112c61fc6f compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/5ef30d34e749/disk-8867bbd4.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a21c2389ebfb/vmlinux-8867bbd4.xz kernel image: https://storage.googleapis.com/syzbot-assets/9720b12c3f99/Image-8867bbd4.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ad5a1b5c1c112c61fc6f@syzkaller.appspotmail.com ================================================================== BUG: KASAN: slab-out-of-bounds in cfg80211_wext_freq+0x170/0x1ac net/wireless/wext-compat.c:238 Read of size 2 at addr ffff0000cbece140 by task syz.3.369/7789 CPU: 1 PID: 7789 Comm: syz.3.369 Tainted: G W 6.10.0-rc2-syzkaller-g8867bbd4a056 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x198/0x538 mm/kasan/report.c:488 kasan_report+0xd8/0x138 mm/kasan/report.c:601 __asan_report_load2_noabort+0x20/0x2c mm/kasan/report_generic.c:379 cfg80211_wext_freq+0x170/0x1ac net/wireless/wext-compat.c:238 cfg80211_wext_siwscan+0x438/0xef0 net/wireless/scan.c:3447 ioctl_standard_iw_point+0x7f0/0xdc4 net/wireless/wext-core.c:867 ioctl_standard_call+0xcc/0x264 net/wireless/wext-core.c:1052 wext_ioctl_dispatch+0x1b4/0x534 net/wireless/wext-core.c:1016 wext_handle_ioctl+0x1f8/0x3f4 net/wireless/wext-core.c:1077 sock_ioctl+0x15c/0x838 net/socket.c:1275 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Allocated by task 7789: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:68 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:565 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4121 [inline] __kmalloc_noprof+0x2a0/0x494 mm/slub.c:4134 kmalloc_noprof include/linux/slab.h:664 [inline] kzalloc_noprof include/linux/slab.h:778 [inline] ioctl_standard_iw_point+0x3b8/0xdc4 net/wireless/wext-core.c:828 ioctl_standard_call+0xcc/0x264 net/wireless/wext-core.c:1052 wext_ioctl_dispatch+0x1b4/0x534 net/wireless/wext-core.c:1016 wext_handle_ioctl+0x1f8/0x3f4 net/wireless/wext-core.c:1077 sock_ioctl+0x15c/0x838 net/socket.c:1275 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 The buggy address belongs to the object at ffff0000cbece000 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 4 bytes to the right of allocated 316-byte region [ffff0000cbece000, ffff0000cbece13c) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10becc head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffefff(slab) raw: 05ffc00000000040 ffff0000c0001c80 0000000000000000 dead000000000001 raw: 0000000000000000 0000000080100010 00000001ffffefff 0000000000000000 head: 05ffc00000000040 ffff0000c0001c80 0000000000000000 dead000000000001 head: 0000000000000000 0000000080100010 00000001ffffefff 0000000000000000 head: 05ffc00000000002 fffffdffc32fb301 ffffffffffffffff 0000000000000000 head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000cbece000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000cbece080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff0000cbece100: 00 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc ^ ffff0000cbece180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000cbece200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in net/wireless/scan.c:3445:8 index 33 is out of range for type 'struct iw_freq[32]' CPU: 1 PID: 7789 Comm: syz.3.369 Tainted: G B W 6.10.0-rc2-syzkaller-g8867bbd4a056 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:429 cfg80211_wext_siwscan+0x4a8/0xef0 net/wireless/scan.c:3445 ioctl_standard_iw_point+0x7f0/0xdc4 net/wireless/wext-core.c:867 ioctl_standard_call+0xcc/0x264 net/wireless/wext-core.c:1052 wext_ioctl_dispatch+0x1b4/0x534 net/wireless/wext-core.c:1016 wext_handle_ioctl+0x1f8/0x3f4 net/wireless/wext-core.c:1077 sock_ioctl+0x15c/0x838 net/socket.c:1275 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 ---[ end trace ]--- --- This report is generated by a bot. 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