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[23.128.96.18]) by mx.google.com with ESMTP id mp29si8347405ejc.290.2021.07.15.09.46.58; Thu, 15 Jul 2021 09:47:21 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=t4PRTNjz; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232830AbhGOOfu (ORCPT + 99 others); Thu, 15 Jul 2021 10:35:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53728 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229624AbhGOOfu (ORCPT ); Thu, 15 Jul 2021 10:35:50 -0400 Received: from mail-vs1-xe2c.google.com (mail-vs1-xe2c.google.com [IPv6:2607:f8b0:4864:20::e2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 00521C06175F for ; Thu, 15 Jul 2021 07:32:56 -0700 (PDT) Received: by mail-vs1-xe2c.google.com with SMTP id h5so3068910vsg.12 for ; Thu, 15 Jul 2021 07:32:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=vi8PzyjM9LyyPrLgDAtJUibTYUKjumr71RPU2S7jZOY=; b=t4PRTNjzG53YXUNvAh28OCDEIGERdcbkMgm0s/imsmghH6er9z6+TfPQ20m7oD7YIk 8oDi2KVz/c2R51DYWYhymqSK1M4phFomRZd2Wy7lBMPOBhspiPgRRrQQHki/+nW39m07 Qq97HmFtJN5JrgGXVgap8FRiFnwaDApZ6t1p2//+mYM00KzKZbLAMs65667cWrizYFbA CRrZ0MAGRBCTYoWmYP+69LhRXef02LRzOFl3NhFRUf+3Iesj58KqPOBYx6GlYUEbqCqk pkOUSBw8GiNLWxG0Da4IW9YVXF0aUqFT1OL2napufO+aGWrFGTNhT02lsFOlJ1SW1M6b lkBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=vi8PzyjM9LyyPrLgDAtJUibTYUKjumr71RPU2S7jZOY=; b=rgXLNr/5GoU7KcyGsdUxjLPFvpP6zEyvUTtyziBeQf3XaTD1EHTn4Wh3iCszP1dhIm i74X8ywUYwomx2YPvocFP5ZelS1UqiUPtXwB836r3YtofJZZiJDLM734iJW+G0y0d504 yvg7Q9TCPmHIiVriJDkteJ5SVuYCDWyFKSm7hw3WlgzkYlZUa5dLMYDvmoNZ7nyQgXRd Ndyp/Z6GizeEKOA2Qtnc/3j1+noB3XQwQ9xL90laUFJXzt0K/ra+eUTh55Ff0SPCLP+V SpPPgq0K7+/HsVg5dmh3z8o2bdHZDFvLAKPUkx6glMbm6ioHx3jCchi04h2YeyGzrdcN tvyw== X-Gm-Message-State: AOAM531OjfdIg4XrbIlIRC2NC/WVMWT0iofSC2hBv1ofA0TiZWVGlvxT jUULgDiGTEaoBBH6bglAE4u3p/D1l9DSdBV2AL/gAg8y350Trg== X-Received: by 2002:a67:fdc2:: with SMTP id l2mr6391753vsq.7.1626359575678; Thu, 15 Jul 2021 07:32:55 -0700 (PDT) MIME-Version: 1.0 From: jim.cromie@gmail.com Date: Thu, 15 Jul 2021 08:32:29 -0600 Message-ID: Subject: 5.14.0-rc1 KASAN use after free To: LKML Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org hi all, I noticed this report this morning, from 3 days ago, about 10 minutes after boot. Its easiest to ignore it, and I dont want to make a fuss, but it looks useful to someone [ 33.663464] Bluetooth: RFCOMM ver 1.11 [ 646.343628] ================================================================== [ 646.343649] BUG: KASAN: use-after-free in bfq_get_queue+0x47d/0x900 [ 646.343680] Read of size 8 at addr ffff88810d864a00 by task journal-offline/1639 [ 646.343708] CPU: 2 PID: 1639 Comm: journal-offline Not tainted 5.14.0-rc1-lm1 #66 [ 646.343730] Hardware name: TOSHIBA Satellite L55-C/06F4 , BIOS 1.20 10/08/2015 [ 646.343745] Call Trace: [ 646.343757] dump_stack_lvl+0x46/0x5a [ 646.343781] print_address_description.constprop.0+0x1f/0x140 [ 646.343808] ? bfq_get_queue+0x47d/0x900 [ 646.343829] kasan_report.cold+0x7f/0x11b [ 646.343854] ? bfq_init_bfqq+0x2a0/0x330 [ 646.343873] ? bfq_get_queue+0x47d/0x900 [ 646.343895] bfq_get_queue+0x47d/0x900 [ 646.343918] ? bfq_merge_bfqqs+0x7a0/0x7a0 [ 646.343939] ? _raw_write_unlock_bh+0x30/0x30 [ 646.343965] bfq_get_bfqq_handle_split+0xa1/0x240 [ 646.343991] bfq_init_rq+0x1e0/0x15e0 [ 646.344013] ? submit_bio_noacct+0x7f0/0x7f0 [ 646.344036] ? percpu_counter_add_batch+0x1f/0x90 [ 646.344059] ? bfq_get_bfqq_handle_split+0x240/0x240 [ 646.344082] ? btrfs_map_bio+0x404/0x830 [ 646.344100] ? elv_rqhash_find+0x42/0x180 [ 646.344121] ? _raw_spin_lock_irq+0x71/0xb0 [ 646.344142] ? _raw_write_lock_irq+0xb0/0xb0 [ 646.344164] bfq_insert_requests+0xe2/0x2a10 [ 646.344190] ? btrfs_submit_data_bio+0x186/0x340 [ 646.344215] ? submit_one_bio+0x81/0xc0 [ 646.344235] ? bfq_request_merged+0x110/0x110 [ 646.344256] ? blk_status_to_errno+0x20/0x30 [ 646.344279] ? extent_write_locked_range+0x360/0x360 [ 646.344302] ? btrfs_use_block_rsv+0x320/0x320 [ 646.344324] blk_mq_sched_insert_requests+0xa6/0x1a0 [ 646.344347] blk_mq_flush_plug_list+0x1fa/0x2f0 [ 646.344374] ? blk_mq_insert_requests+0x1a0/0x1a0 [ 646.344399] ? __filemap_fdatawrite_range+0x176/0x1c0 [ 646.344423] blk_flush_plug_list+0x1d4/0x200 [ 646.344449] ? blk_insert_cloned_request+0x170/0x170 [ 646.344476] blk_finish_plug+0x3c/0x60 [ 646.344500] start_ordered_ops.constprop.0+0xc3/0xf0 [ 646.344525] ? btrfs_file_write_iter+0x5b0/0x5b0 [ 646.344554] btrfs_sync_file+0x135/0x880 [ 646.344578] ? rwsem_mark_wake+0x460/0x460 [ 646.344601] ? start_ordered_ops.constprop.0+0xf0/0xf0 [ 646.344628] ? vfs_fsync_range+0x86/0x100 [ 646.344650] __x64_sys_fsync+0x3f/0x70 [ 646.344672] do_syscall_64+0x3b/0x90 [ 646.344696] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 646.344720] RIP: 0033:0x7f6eedeecebb [ 646.344738] Code: 4a 00 00 00 0f 05 48 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 53 f7 ff ff 8b 7c 24 0c 41 89 c0 b8 4a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 b1 f7 ff ff 8b 44 [ 646.344760] RSP: 002b:00007f6ee919ca10 EFLAGS: 00000293 ORIG_RAX: 000000000000004a [ 646.344784] RAX: ffffffffffffffda RBX: 00005614c6093620 RCX: 00007f6eedeecebb [ 646.344801] RDX: 0000000000000002 RSI: 00007f6eee1cb9e2 RDI: 0000000000000017 [ 646.344815] RBP: 00007f6eee1cd610 R08: 0000000000000000 R09: 00007f6ee919d640 [ 646.344830] R10: 0000000000000002 R11: 0000000000000293 R12: 0000000000000002 [ 646.344843] R13: 00007ffec2aede3f R14: 0000000000000000 R15: 00007f6ee919d640 [ 646.344874] Allocated by task 1626: [ 646.344886] kasan_save_stack+0x1b/0x40 [ 646.344906] __kasan_slab_alloc+0x61/0x80 [ 646.344924] kmem_cache_alloc_node+0x151/0x2d0 [ 646.344942] bfq_get_queue+0x209/0x900 [ 646.344961] bfq_get_bfqq_handle_split+0xa1/0x240 [ 646.344982] bfq_init_rq+0x1e0/0x15e0 [ 646.345001] bfq_insert_requests+0xe2/0x2a10 [ 646.345020] blk_mq_sched_insert_requests+0xa6/0x1a0 [ 646.345039] blk_mq_flush_plug_list+0x1fa/0x2f0 [ 646.345060] blk_flush_plug_list+0x1d4/0x200 [ 646.345082] blk_finish_plug+0x3c/0x60 [ 646.345103] start_ordered_ops.constprop.0+0xc3/0xf0 [ 646.345124] btrfs_sync_file+0x135/0x880 [ 646.345144] __x64_sys_fsync+0x3f/0x70 [ 646.345163] do_syscall_64+0x3b/0x90 [ 646.345183] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 646.345212] The buggy address belongs to the object at ffff88810d864810 which belongs to the cache bfq_queue of size 560 [ 646.345229] The buggy address is located 496 bytes inside of 560-byte region [ffff88810d864810, ffff88810d864a40) [ 646.345248] The buggy address belongs to the page: [ 646.345258] page:0000000040e75441 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88810d864810 pfn:0x10d864 [ 646.345280] head:0000000040e75441 order:2 compound_mapcount:0 compound_pincount:0 [ 646.345296] flags: 0x17ffffc0010200(slab|head|node=0|zone=2|lastcpupid=0x1fffff) [ 646.345326] raw: 0017ffffc0010200 0000000000000000 dead000000000122 ffff88810145b400 [ 646.345345] raw: ffff88810d864810 000000008017000f 00000001ffffffff 0000000000000000 [ 646.345357] page dumped because: kasan: bad access detected [ 646.345375] Memory state around the buggy address: [ 646.345387] ffff88810d864900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 646.345403] ffff88810d864980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 646.345417] >ffff88810d864a00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 646.345428] ^ [ 646.345441] ffff88810d864a80: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 646.345455] ffff88810d864b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 646.345467] ================================================================== [ 646.345476] Disabling lock debugging due to kernel taint [20632.749805] rfkill: input handler enabled [20636.319701] rfkill: input handler disabled [22201.638710] perf: interrupt took too long (2514 > 2500), lowering kernel.perf_event_max_sample_rate to 79000 [22539.009414] perf: interrupt took too long (3145 > 3142), lowering kernel.perf_event_max_sample_rate to 63000 [23091.879235] perf: interrupt took too long (3960 > 3931), lowering kernel.perf_event_max_sample_rate to 50000 [24206.193740] perf: interrupt took too long (4972 > 4950), lowering kernel.perf_event_max_sample_rate to 40000 [25306.264832] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. [38172.611967] nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. [123082.553154] psmouse serio2: bad data from KBC - timeout [211716.941601] ------------[ cut here ]------------ [211716.941610] cfs_rq->avg.load_avg || cfs_rq->avg.util_avg || cfs_rq->avg.runnable_avg [211716.941619] WARNING: CPU: 4 PID: 33 at kernel/sched/fair.c:3307 update_blocked_averages+0xb7c/0xbf0 [211716.941641] Modules linked in: uinput rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp bridge stp llc ccm nft_objref nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat iwlmvm fat snd_hda_codec_hdmi intel_rapl_msr mac80211 snd_hda_codec_conexant at24 snd_hda_codec_generic ledtrig_audio iTCO_wdt intel_pmc_bxt mei_hdcp iTCO_vendor_support libarc4 intel_wmi_thunderbolt wmi_bmof uvcvideo btusb snd_hda_intel btrtl btbcm snd_intel_dspcfg videobuf2_vmalloc videobuf2_memops btintel videobuf2_v4l2 videobuf2_common intel_rapl_common snd_hda_codec x86_pkg_temp_thermal iwlwifi [211716.941813] intel_powerclamp videodev coretemp snd_hwdep rapl snd_hda_core bluetooth intel_cstate snd_seq mc intel_uncore joydev snd_seq_device ecdh_generic cfg80211 ecc pcspkr snd_pcm snd_timer mei_me snd toshiba_acpi i2c_i801 mei sparse_keymap soundcore industrialio i2c_smbus toshiba_bluetooth rfkill wmi acpi_pad ip_tables rtsx_pci_sdmmc mmc_core crct10dif_pclmul crc32_pclmul i915 crc32c_intel i2c_algo_bit ttm ghash_clmulni_intel serio_raw r8169 drm_kms_helper cec rtsx_pci drm video fuse [211716.941897] CPU: 4 PID: 33 Comm: ksoftirqd/4 Tainted: G B 5.14.0-rc1-lm1 #66 [211716.941903] Hardware name: TOSHIBA Satellite L55-C/06F4 , BIOS 1.20 10/08/2015 [211716.941907] RIP: 0010:update_blocked_averages+0xb7c/0xbf0 [211716.941916] Code: c0 5e ab 90 c6 05 98 15 a7 02 01 e8 21 48 14 01 0f 0b e9 13 f6 ff ff 48 c7 c7 20 5f ab 90 c6 05 7a 15 a7 02 01 e8 07 48 14 01 <0f> 0b 48 8b 7c 24 20 e8 38 61 31 00 45 8b af 38 01 00 00 e9 e3 f9 [211716.941921] RSP: 0018:ffff888100fefc58 EFLAGS: 00010082 [211716.941926] RAX: 0000000000000000 RBX: ffff88821bb334c0 RCX: 0000000000000000 [211716.941930] RDX: 0000000000000027 RSI: 0000000000000004 RDI: ffffed10201fdf81 [211716.941934] RBP: ffff88821bb32de0 R08: ffffffff8f3f445e R09: ffff88821bb20a8b [211716.941937] R10: ffffed1043764151 R11: 0000000000000001 R12: ffffffff927d77c0 [211716.941941] R13: 0000000000000001 R14: ffff88821bb33728 R15: ffff88821bb32d40 [211716.941945] FS: 0000000000000000(0000) GS:ffff88821bb00000(0000) knlGS:0000000000000000 [211716.941949] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [211716.941952] CR2: 0000556174b0d040 CR3: 0000000140414001 CR4: 00000000003726e0 [211716.941956] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [211716.941959] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [211716.941963] Call Trace: [211716.941968] newidle_balance+0x34d/0x6b0 [211716.941974] ? update_cfs_group+0x1e/0x150 [211716.941980] ? load_balance+0x1290/0x1290 [211716.941985] ? update_min_vruntime+0x44/0xc0 [211716.941991] pick_next_task_fair+0x59/0x660 [211716.941997] __schedule+0x225/0xeb0 [211716.942005] ? io_schedule_timeout+0xb0/0xb0 [211716.942011] ? __do_softirq+0x209/0x373 [211716.942017] schedule+0x6d/0x120 [211716.942023] smpboot_thread_fn+0x1b7/0x250 [211716.942030] ? smpboot_register_percpu_thread+0x190/0x190 [211716.942036] kthread+0x1d2/0x200 [211716.942041] ? set_kthread_struct+0x80/0x80 [211716.942046] ret_from_fork+0x22/0x30 [211716.942055] ---[ end trace ee8f02e72a76fda7 ]--- [256577.295169] show_signal_msg: 4 callbacks suppressed [256577.295176] gnome-shell[2236]: segfault at 18 ip 00007f16ab0563ee sp 00007ffcd6601570 error 4 in libgjs.so.0.0.0[7f16ab025000+92000] [256577.295205] Code: ec 30 64 48 8b 04 25 28 00 00 00 48 89 44 24 28 31 c0 e8 05 32 00 00 48 89 c3 e8 8d 36 fd ff 48 89 c7 e8 c5 30 fd ff 48 89 c5 <48> 8b 43 18 48 85 c0 0f 84 85 00 00 00 48 8b 50 18 48 8d 45 18 49 [256588.051436] rfkill: input handler enabled