From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5AF36C433E0 for ; Sun, 17 May 2020 15:32:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3DC6B207BB for ; Sun, 17 May 2020 15:32:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728115AbgEQPc0 (ORCPT ); Sun, 17 May 2020 11:32:26 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:57112 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728021AbgEQPcW (ORCPT ); Sun, 17 May 2020 11:32:22 -0400 Received: by mail-il1-f197.google.com with SMTP id v87so7336161ill.23 for ; Sun, 17 May 2020 08:32:20 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=2doS7klhJosBZYIMMmPUj2nhv1GcHyUE0aRUwaSGsPk=; b=WHCyRA79EVLB5u2Hg3DnzZs2igjT1r8EU4spgQTBFngryshEQQEMQEDRPHc92faDua EPfzmGwbgmzWjtzzO8rmg3Pjd2sdwmUT2wRN7BoNQHeGIxMyq9HH5kLRl4w5zPiZWq1O ejivWwSF3q1xvO+0U5ns5WwPsP36VQ63WfnCxpajz9CU4oVsuB39l3kKWi3GwKlPOnla /TlSbombUxz0APROnPpgQmcvqnPs641hXUH9MwOXD/YVjsxtpN/5nGfjap2Q6XmyoxZd +c/PWGKxuQ32LWsUg6w1fg5E1l0GlMJ+PubYEz0xjaR+f7mldhlSdibgfeDATdhRCZNw WqNA== X-Gm-Message-State: AOAM53262dT2ZXd+NgHj7ck93dh1JKVIt+llNXi8zokwbc3I87wNtVEK DfIMivSnCFqjOBGuJ9rEY3GLQD1E/FD1u2pc0HWiyGbu/Nul X-Google-Smtp-Source: ABdhPJyRqOw2N4zucehobh1VqdeBMSepkfOx12OOiImeDnQo31lVKxndyFcwzlDCgNZi8UjOR+zQHW3dshDHyOtfT1ajt+bLn+2o MIME-Version: 1.0 X-Received: by 2002:a92:58d6:: with SMTP id z83mr12182831ilf.129.1589729539621; Sun, 17 May 2020 08:32:19 -0700 (PDT) Date: Sun, 17 May 2020 08:32:19 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007f8ce405a5d9c010@google.com> Subject: KASAN: slab-out-of-bounds Read in ath9k_hif_usb_rx_cb From: syzbot To: andreyknvl@google.com, ath9k-devel@qca.qualcomm.com, davem@davemloft.net, kvalo@codeaurora.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 806d8acc USB: dummy-hcd: use configurable endpoint naming .. git tree: https://github.com/google/kasan.git usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=1147bce6100000 kernel config: https://syzkaller.appspot.com/x/.config?x=d800e9bad158025f dashboard link: https://syzkaller.appspot.com/bug?extid=c15a0a825788b6ba2bc4 compiler: gcc (GCC) 9.0.0 20181231 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+c15a0a825788b6ba2bc4@syzkaller.appspotmail.com ================================================================== BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:580 [inline] BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_cb+0xad3/0xf90 drivers/net/wireless/ath/ath9k/hif_usb.c:666 Read of size 4 at addr ffff8881cca0c0dc by task kworker/1:3/3075 CPU: 1 PID: 3075 Comm: kworker/1:3 Not tainted 5.7.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events request_firmware_work_func Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xef/0x16e lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xd3/0x314 mm/kasan/report.c:382 __kasan_report.cold+0x37/0x92 mm/kasan/report.c:511 kasan_report+0x33/0x50 mm/kasan/common.c:625 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:580 [inline] ath9k_hif_usb_rx_cb+0xad3/0xf90 drivers/net/wireless/ath/ath9k/hif_usb.c:666 __usb_hcd_giveback_urb+0x1f2/0x470 drivers/usb/core/hcd.c:1648 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1713 dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1966 call_timer_fn+0x1ac/0x700 kernel/time/timer.c:1405 expire_timers kernel/time/timer.c:1450 [inline] __run_timers kernel/time/timer.c:1774 [inline] __run_timers kernel/time/timer.c:1741 [inline] run_timer_softirq+0x5f9/0x1500 kernel/time/timer.c:1787 __do_softirq+0x21e/0x9aa kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x178/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x141/0x540 arch/x86/kernel/apic/apic.c:1140 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1779 [inline] RIP: 0010:vprintk_emit+0x3d0/0x3e0 kernel/printk/printk.c:2020 Code: 00 83 fb ff 75 d6 e9 d8 fc ff ff e8 7a 2f 16 00 e8 55 8b 1b 00 41 56 9d e9 aa fd ff ff e8 68 2f 16 00 e8 43 8b 1b 00 41 56 9d 2a ff ff ff 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 f5 53 48 RSP: 0018:ffff8881d5f8fab8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffffffff1270ab2 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881d5aeeb7c RBP: ffff8881d5f8fb00 R08: 0000000000000001 R09: fffffbfff126c8c8 R10: ffffffff8936463f R11: fffffbfff126c8c7 R12: 000000000000002a R13: ffff8881d5e48000 R14: 0000000000000293 R15: 0000000000000000 vprintk_func+0x75/0x113 kernel/printk/printk_safe.c:385 printk+0xba/0xed kernel/printk/printk.c:2081 ath9k_htc_hw_init.cold+0x17/0x2a drivers/net/wireless/ath/ath9k/htc_hst.c:502 ath9k_hif_usb_firmware_cb+0x274/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1187 request_firmware_work_func+0x126/0x242 drivers/base/firmware_loader/main.c:1005 process_one_work+0x965/0x1630 kernel/workqueue.c:2268 worker_thread+0x96/0xe20 kernel/workqueue.c:2414 kthread+0x326/0x430 kernel/kthread.c:268 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351 Allocated by task 147: save_stack+0x1b/0x40 mm/kasan/common.c:49 set_track mm/kasan/common.c:57 [inline] __kasan_kmalloc mm/kasan/common.c:495 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:468 slab_post_alloc_hook mm/slab.h:586 [inline] slab_alloc_node mm/slub.c:2797 [inline] slab_alloc mm/slub.c:2805 [inline] kmem_cache_alloc+0xd8/0x300 mm/slub.c:2810 getname_flags fs/namei.c:138 [inline] getname_flags+0xd2/0x5b0 fs/namei.c:128 user_path_at_empty+0x2a/0x50 fs/namei.c:2632 user_path_at include/linux/namei.h:59 [inline] vfs_statx+0x119/0x1e0 fs/stat.c:197 vfs_lstat include/linux/fs.h:3284 [inline] __do_sys_newlstat+0x96/0x120 fs/stat.c:364 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 Freed by task 147: save_stack+0x1b/0x40 mm/kasan/common.c:49 set_track mm/kasan/common.c:57 [inline] kasan_set_free_info mm/kasan/common.c:317 [inline] __kasan_slab_free+0x117/0x160 mm/kasan/common.c:456 slab_free_hook mm/slub.c:1455 [inline] slab_free_freelist_hook mm/slub.c:1488 [inline] slab_free mm/slub.c:3045 [inline] kmem_cache_free+0x9b/0x360 mm/slub.c:3061 putname+0xe1/0x120 fs/namei.c:259 filename_lookup+0x282/0x3e0 fs/namei.c:2362 user_path_at include/linux/namei.h:59 [inline] vfs_statx+0x119/0x1e0 fs/stat.c:197 vfs_lstat include/linux/fs.h:3284 [inline] __do_sys_newlstat+0x96/0x120 fs/stat.c:364 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 The buggy address belongs to the object at ffff8881cca0b300 which belongs to the cache names_cache of size 4096 The buggy address is located 3548 bytes inside of 4096-byte region [ffff8881cca0b300, ffff8881cca0c300) The buggy address belongs to the page: page:ffffea0007328200 refcount:1 mapcount:0 mapping:0000000063d385a8 index:0x0 head:ffffea0007328200 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head) raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da11e000 raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881cca0bf80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881cca0c000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8881cca0c080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881cca0c100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881cca0c180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== --- This bug 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 bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.