From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f205.google.com (mail-oi1-f205.google.com [209.85.167.205]) (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 293C53D891C for ; Mon, 1 Jun 2026 15:08:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780326508; cv=none; b=m5ZxeJQ7B7EA6cEEVqVe3oDa97l7hDTB6ac8UCYrTibKSvey0X82FdqhsS5b0Hy/ILedumDHS9+oZ2HoyR5zXr1QjeRW+hRLWhq89vEpO3Y0NSJ30t123W2/iBOj++zqENx28KicjVIxaRnGpNW0mXKRJlPmxTFKsA2g9o08Ny8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780326508; c=relaxed/simple; bh=Z4v3V7t/Rqjq4B0IsQoIu4TeNWqPHbcqSPmZM/jdPkY=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=HPImtKfhqIpGHVyhFluypv4GsVSCOKZN3vRSKcY7WE/KO6xcFzF5F+RNnRj7Ha7yv5LwUVjyUlOQ8rba8qV9QKXXI9VFJHEYmy1HjnaFSeVoekMj4IGeHxspzkC/wE0SbjVT+zZUrnW0pQJBJhZjVN15OKipqIdLpsmu/cFJhSQ= 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=209.85.167.205 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-f205.google.com with SMTP id 5614622812f47-4863a55600aso286258b6e.1 for ; Mon, 01 Jun 2026 08:08:25 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780326505; x=1780931305; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=c2nWVp4PNHWWi3GvsHFOTS16+CKRfsYQOKXCP06IiSc=; b=n8euNb/flCjtHV5MkP6WL63SNyXDHx18JFY5bocyxY6DJcgyxDGHweJiJAhZKJmhb0 +Qay9IitMQ7Mlw2tcgTQJR0VS0YPnu7rQwhlKENzG7kKcWCUiPbCslATnkdLpZOJq6LS xxsQpHP9Lr8u+/qtbhtoi6SU6D+RTl/x+JGl9AZ3IUN11I4cI7usEo5ED2FZnwf4KHqE JJPJFC/8+utS2M7wi/zkvxsUL4ggGO1I3OQhIHq4PlXurZVRBeVG0RJ0WQBOZMliRgVM TFsv7w5b+r7RlPbMbNUHbkKEmDOasjUghQwu37re8y9m5cdGzCcqPYOnJFhzcy1K93cq mshA== X-Forwarded-Encrypted: i=1; AFNElJ91LyyKLsrwojA1cne1w7twLnRH1uZu6b2EKO9tLzLlTsGzEnF55MRmBnZgEpHFpH9+rLYIyIQqB9j/ng==@lists.linux.dev X-Gm-Message-State: AOJu0Ywc3D7EY5WAa5bSsXSoSBaTJWnNnBCjOYOx4L+gYerDRhBGTcWN Fz76E+RM/ym03QvI89GCBwt+nVi8JfhPKsiPgf1/X8ZKPUHgChC/+NenYEbzrRm+dTEdNvYslE9 JcmNSDPJfxupiJa8QH40fGsgypnMiqoOfD/vXPzcynwv8YWHkbRH5vXX7iUI= Precedence: bulk X-Mailing-List: driver-core@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1781:b0:479:fca7:4662 with SMTP id 5614622812f47-485fb24dcf0mr5617667b6e.9.1780326504836; Mon, 01 Jun 2026 08:08:24 -0700 (PDT) Date: Mon, 01 Jun 2026 08:08:24 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a1da068.bd48a97d.14881d.0003.GAE@google.com> Subject: [syzbot] [kernel?] KASAN: slab-use-after-free Read in netdev_register_kobject (2) From: syzbot To: dakr@kernel.org, driver-core@lists.linux.dev, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, rafael@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 4cbfe4502e3d Merge tag 'v7.1-rc5-ksmbd-server-fixes' of gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11419cec580000 kernel config: https://syzkaller.appspot.com/x/.config?x=58acee1ac5406016 dashboard link: https://syzkaller.appspot.com/bug?extid=fed5dce4553262f3b35c compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-4cbfe450.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/45e57d38df99/vmlinux-4cbfe450.xz kernel image: https://storage.googleapis.com/syzbot-assets/fe2428a7711a/bzImage-4cbfe450.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+fed5dce4553262f3b35c@syzkaller.appspotmail.com ================================================================== BUG: KASAN: slab-use-after-free in kobject_get+0x136/0x150 lib/kobject.c:639 Read of size 1 at addr ffff88804be10d1c by task syz.2.2484/16757 CPU: 1 UID: 0 PID: 16757 Comm: syz.2.2484 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x13d/0x4b0 mm/kasan/report.c:482 kasan_report+0xdf/0x1d0 mm/kasan/report.c:595 kobject_get+0x136/0x150 lib/kobject.c:639 get_device drivers/base/core.c:3802 [inline] device_add+0x19f/0x1950 drivers/base/core.c:3614 netdev_register_kobject+0x1a9/0x3d0 net/core/net-sysfs.c:2343 register_netdevice+0x151c/0x24b0 net/core/dev.c:11423 register_netdev+0x34/0x50 net/core/dev.c:11539 bnep_add_connection+0x723/0xd30 net/bluetooth/bnep/core.c:631 do_bnep_sock_ioctl.isra.0+0x3ac/0x5b0 net/bluetooth/bnep/sock.c:83 bnep_sock_compat_ioctl+0x87/0x1d0 net/bluetooth/bnep/sock.c:168 compat_sock_ioctl+0x179/0x760 net/socket.c:3632 __do_compat_sys_ioctl fs/ioctl.c:695 [inline] __se_compat_sys_ioctl fs/ioctl.c:638 [inline] __ia32_compat_sys_ioctl+0x2cf/0x360 fs/ioctl.c:638 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xe7/0x950 arch/x86/entry/syscall_32.c:307 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:332 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf705ef7c Code: d2 74 05 c1 e8 0c 89 02 8b 5d fc 31 c0 c9 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 2e 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 58 b8 RSP: 002b:00000000f540b50c EFLAGS: 00000292 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00000000400442c8 RDX: 0000000080000340 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 12930: kasan_save_stack+0x30/0x50 mm/kasan/common.c:57 kasan_save_track+0x14/0x30 mm/kasan/common.c:78 poison_kmalloc_redzone mm/kasan/common.c:398 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415 kmalloc_noprof include/linux/slab.h:950 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] __hci_conn_add+0x1f4/0x1da0 net/bluetooth/hci_conn.c:1030 hci_conn_add_unset+0x76/0x120 net/bluetooth/hci_conn.c:1157 hci_conn_request_evt+0xa58/0xbb0 net/bluetooth/hci_event.c:3333 hci_event_func net/bluetooth/hci_event.c:7796 [inline] hci_event_packet+0x8e9/0xcd0 net/bluetooth/hci_event.c:7847 hci_rx_work+0x451/0xfc0 net/bluetooth/hci_core.c:4077 process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314 process_scheduled_works kernel/workqueue.c:3397 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Freed by task 16742: kasan_save_stack+0x30/0x50 mm/kasan/common.c:57 kasan_save_track+0x14/0x30 mm/kasan/common.c:78 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2689 [inline] slab_free mm/slub.c:6251 [inline] kfree+0x223/0x6c0 mm/slub.c:6566 device_release+0xd2/0x270 drivers/base/core.c:2566 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1f7/0x640 lib/kobject.c:737 put_device+0x1f/0x30 drivers/base/core.c:3814 hci_conn_put include/net/bluetooth/hci_core.h:1673 [inline] hci_disconnect_all_sync.constprop.0.isra.0+0x15d/0x430 net/bluetooth/hci_sync.c:5790 hci_suspend_sync+0x8b7/0xa70 net/bluetooth/hci_sync.c:6265 hci_suspend_dev+0x31d/0x540 net/bluetooth/hci_core.c:2850 hci_suspend_notifier+0x21e/0x330 net/bluetooth/hci_core.c:2421 notifier_call_chain+0x99/0x400 kernel/notifier.c:85 notifier_call_chain_robust kernel/notifier.c:120 [inline] blocking_notifier_call_chain_robust kernel/notifier.c:345 [inline] blocking_notifier_call_chain_robust+0xc8/0x160 kernel/notifier.c:333 pm_notifier_call_chain_robust+0x27/0x60 kernel/power/main.c:172 snapshot_open+0x189/0x2a0 kernel/power/user.c:77 misc_open+0x26d/0x450 drivers/char/misc.c:163 chrdev_open+0x234/0x6a0 fs/char_dev.c:411 do_dentry_open+0x6d8/0x1660 fs/open.c:947 vfs_open+0x82/0x3f0 fs/open.c:1079 do_open fs/namei.c:4699 [inline] path_openat+0x208c/0x31a0 fs/namei.c:4858 do_file_open+0x20e/0x430 fs/namei.c:4887 do_sys_openat2+0x10d/0x1e0 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_compat_sys_openat fs/open.c:1432 [inline] __se_compat_sys_openat fs/open.c:1430 [inline] __ia32_compat_sys_openat+0x12d/0x210 fs/open.c:1430 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xe7/0x950 arch/x86/entry/syscall_32.c:307 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:332 entry_SYSENTER_compat_after_hwframe+0x84/0x8e Last potentially related work creation: kasan_save_stack+0x30/0x50 mm/kasan/common.c:57 kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:556 insert_work+0x36/0x230 kernel/workqueue.c:2226 __queue_work+0x9a2/0x1270 kernel/workqueue.c:2393 __queue_delayed_work+0x357/0x450 kernel/workqueue.c:2560 queue_delayed_work_on+0x180/0x1e0 kernel/workqueue.c:2612 queue_delayed_work include/linux/workqueue.h:713 [inline] hci_conn_drop include/net/bluetooth/hci_core.h:1712 [inline] hci_conn_drop include/net/bluetooth/hci_core.h:1686 [inline] l2cap_chan_del+0x649/0x930 net/bluetooth/l2cap_core.c:672 l2cap_conn_del+0x395/0x710 net/bluetooth/l2cap_core.c:1802 l2cap_connect_cfm+0x9bb/0xf80 net/bluetooth/l2cap_core.c:7374 hci_connect_cfm include/net/bluetooth/hci_core.h:2139 [inline] hci_conn_failed+0x188/0x360 net/bluetooth/hci_conn.c:1409 hci_abort_conn_sync+0x7d9/0xb20 net/bluetooth/hci_sync.c:5766 hci_disconnect_all_sync.constprop.0.isra.0+0x155/0x430 net/bluetooth/hci_sync.c:5789 hci_suspend_sync+0x8b7/0xa70 net/bluetooth/hci_sync.c:6265 hci_suspend_dev+0x31d/0x540 net/bluetooth/hci_core.c:2850 hci_suspend_notifier+0x21e/0x330 net/bluetooth/hci_core.c:2421 notifier_call_chain+0x99/0x400 kernel/notifier.c:85 notifier_call_chain_robust kernel/notifier.c:120 [inline] blocking_notifier_call_chain_robust kernel/notifier.c:345 [inline] blocking_notifier_call_chain_robust+0xc8/0x160 kernel/notifier.c:333 pm_notifier_call_chain_robust+0x27/0x60 kernel/power/main.c:172 snapshot_open+0x189/0x2a0 kernel/power/user.c:77 misc_open+0x26d/0x450 drivers/char/misc.c:163 chrdev_open+0x234/0x6a0 fs/char_dev.c:411 do_dentry_open+0x6d8/0x1660 fs/open.c:947 vfs_open+0x82/0x3f0 fs/open.c:1079 do_open fs/namei.c:4699 [inline] path_openat+0x208c/0x31a0 fs/namei.c:4858 do_file_open+0x20e/0x430 fs/namei.c:4887 do_sys_openat2+0x10d/0x1e0 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_compat_sys_openat fs/open.c:1432 [inline] __se_compat_sys_openat fs/open.c:1430 [inline] __ia32_compat_sys_openat+0x12d/0x210 fs/open.c:1430 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xe7/0x950 arch/x86/entry/syscall_32.c:307 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:332 entry_SYSENTER_compat_after_hwframe+0x84/0x8e The buggy address belongs to the object at ffff88804be10000 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 3356 bytes inside of freed 8192-byte region [ffff88804be10000, ffff88804be12000) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88804be14000 pfn:0x4be10 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x4fff00000000240(workingset|head|node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000240 ffff88801b843180 ffffea00012f7c10 ffffea000132a210 raw: ffff88804be14000 0000000800020001 00000000f5000000 0000000000000000 head: 04fff00000000240 ffff88801b843180 ffffea00012f7c10 ffffea000132a210 head: ffff88804be14000 0000000800020001 00000000f5000000 0000000000000000 head: 04fff00000000003 fffffffffffffe01 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 16670, tgid 16669 (syz.3.2439), ts 1231348900296, free_ts 1230410524617 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x11a6/0x33b0 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x27c/0x2bc0 mm/page_alloc.c:5226 alloc_slab_page mm/slub.c:3278 [inline] allocate_slab mm/slub.c:3467 [inline] new_slab+0xa6/0x6c0 mm/slub.c:3525 refill_objects+0x277/0x420 mm/slub.c:7272 refill_sheaf mm/slub.c:2816 [inline] __pcs_replace_empty_main+0x375/0x650 mm/slub.c:4652 alloc_from_pcs mm/slub.c:4750 [inline] slab_alloc_node mm/slub.c:4884 [inline] __do_kmalloc_node mm/slub.c:5295 [inline] __kmalloc_noprof+0x688/0x850 mm/slub.c:5308 kmalloc_noprof include/linux/slab.h:954 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] snd_seq_oss_readq_new+0x9b/0x290 sound/core/seq/oss/seq_oss_readq.c:41 snd_seq_oss_open+0x476/0xa10 sound/core/seq/oss/seq_oss_init.c:226 odev_open+0x6f/0x90 sound/core/seq/oss/seq_oss.c:128 soundcore_open+0x2e3/0x5a0 sound/sound_core.c:594 chrdev_open+0x234/0x6a0 fs/char_dev.c:411 do_dentry_open+0x6d8/0x1660 fs/open.c:947 vfs_open+0x82/0x3f0 fs/open.c:1079 do_open fs/namei.c:4699 [inline] path_openat+0x208c/0x31a0 fs/namei.c:4858 do_file_open+0x20e/0x430 fs/namei.c:4887 page last free pid 16136 tgid 16136 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0x747/0x1040 mm/page_alloc.c:2943 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4570 [inline] slab_alloc_node mm/slub.c:4899 [inline] __do_kmalloc_node mm/slub.c:5295 [inline] __kvmalloc_node_noprof+0x316/0xa00 mm/slub.c:6833 xt_alloc_table_info+0x44/0xa0 net/netfilter/x_tables.c:1286 compat_do_replace+0x19b/0x500 net/ipv4/netfilter/ip_tables.c:1514 do_ip6t_set_ctl+0x562/0xb00 net/ipv6/netfilter/ip6_tables.c:1641 nf_setsockopt+0x8d/0xf0 net/netfilter/nf_sockopt.c:101 ipv6_setsockopt+0x135/0x170 net/ipv6/ipv6_sockglue.c:970 tcp_setsockopt+0xa7/0x100 net/ipv4/tcp.c:4182 do_sock_setsockopt+0xf3/0x1d0 net/socket.c:2381 __sys_setsockopt+0x119/0x190 net/socket.c:2406 __do_compat_sys_socketcall net/compat.c:491 [inline] __se_compat_sys_socketcall net/compat.c:423 [inline] __ia32_compat_sys_socketcall+0x556/0x770 net/compat.c:423 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xe7/0x950 arch/x86/entry/syscall_32.c:307 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:332 Memory state around the buggy address: ffff88804be10c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88804be10c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88804be10d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88804be10d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88804be10e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ---------------- Code disassembly (best guess): 0: d2 74 05 c1 shlb %cl,-0x3f(%rbp,%rax,1) 4: e8 0c 89 02 8b call 0x8b028915 9: 5d pop %rbp a: fc cld b: 31 c0 xor %eax,%eax d: c9 leave e: c3 ret f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 0f 1f 00 nopl (%rax) 21: 51 push %rcx 22: 52 push %rdx 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 ret 2e: 90 nop 2f: 2e 8d b4 26 00 00 00 cs lea 0x0(%rsi,%riz,1),%esi 36: 00 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 3e: 58 pop %rax 3f: b8 .byte 0xb8 --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup