From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from submarine.notk.org (submarine.notk.org [62.210.214.84]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2B0BC19CC02 for ; Tue, 26 Nov 2024 22:52:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=62.210.214.84 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732661565; cv=none; b=rzooZz6RZziW3Y6CSSPYzIbycUOq67OI/bwGiC67FhzCCHqEK3L9mpPhwfQRTlzCToeBeDiH8xcn2cBTSDoVEAZbN0G21gWTFSAZDHneLvVEqGB5AdMkJ9a3S3q1kzORzvojCYeM9XYEO9oib7AAg4KHmO6RxAZGk0ZrW+ymhDk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732661565; c=relaxed/simple; bh=EuGaJ/mZjaH7jxVupFZcPBWvhV2IcdiVCjvTI/XbS0Y=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; 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d=codewreck.org; s=2; t=1732661555; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=dyaRRZ0tTk1QQVewkHdtrvnitidFGtwFZBAQhVsH+MY=; b=rZPLSEqwSzh2jGGTDujnbqRFYoU/QRv+GIAmdyxT+GTkoeTZ+9TBYoQFWTGtbTvqs2Y0SE gEWqg2YC5naCkddKhzZqc/hF1wnAjuMsylsPBA7jB4BghDuADoA8HXAn9Ey9l+1VrT6xD6 Zcpla/xuHBzcke5adY3e1R0YTNgVpxoEme1JpiS2r/NCJPnZL+QngekPloQDdg4bIEyrkC 4bIvx63rBbqXcvMex0tEW53E67k0+yy0NDyG7aOXpnRcp2jLP7BWQR68n2d7RPFsjicOig wLe3dwOgmydxmNxGJM6o0bNXOTMEmbURABSw6ZoY1R9/wjUv5iXzMvv3dy0TgA== Received: from localhost (gaia.codewreck.org [local]) by gaia.codewreck.org (OpenSMTPD) with ESMTPA id 36b02ea3; Tue, 26 Nov 2024 22:52:30 +0000 (UTC) Date: Wed, 27 Nov 2024 07:52:15 +0900 From: asmadeus@codewreck.org To: David Howells Cc: syzbot , ericvh@kernel.org, linux-kernel@vger.kernel.org, linux_oss@crudebyte.com, lucho@ionkov.net, syzkaller-bugs@googlegroups.com, v9fs@lists.linux.dev Subject: Re: [syzbot] [v9fs?] BUG: stack guard page was hit in io_uring_enter Message-ID: References: <6745dced.050a0220.1286eb.0019.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <6745dced.050a0220.1286eb.0019.GAE@google.com> I guess it's another dup #syz dup: [syzbot] [v9fs?] BUG: stack guard page was hit in sys_open Leaving quote below for David syzbot wrote on Tue, Nov 26, 2024 at 06:36:29AM -0800: > Hello, > > syzbot found the following issue on: > > HEAD commit: 05b92660cdfe Merge tag 'pci-v6.12-fixes-2' of git://git.ke.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=155e9630580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=728f7ffd25400452 > dashboard link: https://syzkaller.appspot.com/bug?extid=f86e49ba96853e315c26 > compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > > Unfortunately, I don't have any reproducer for this issue yet. > > Downloadable assets: > disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-05b92660.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/240ba8a2a878/vmlinux-05b92660.xz > kernel image: https://storage.googleapis.com/syzbot-assets/fed8acdd322e/bzImage-05b92660.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+f86e49ba96853e315c26@syzkaller.appspotmail.com > > BUG: TASK stack guard page was hit at ffffc90001717fd8 (stack is ffffc90001718000..ffffc90001720000) > Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN NOPTI > CPU: 3 UID: 0 PID: 8268 Comm: syz.0.692 Not tainted 6.12.0-rc5-syzkaller-00291-g05b92660cdfe #0 > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 > RIP: 0010:unwind_next_frame+0x76/0x20c0 arch/x86/kernel/unwind_orc.c:470 > Code: 41 5f c3 cc cc cc cc 49 8d 6d 48 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 00 18 00 00 49 8b 45 48 <48> 89 44 24 08 49 8d 45 38 48 89 c2 48 89 04 24 48 b8 00 00 00 00 > RSP: 0018:ffffc90001717fe8 EFLAGS: 00010046 > RAX: ffffffff813d7404 RBX: 0000000000000001 RCX: ffffc90001718140 > RDX: 1ffff920002e301e RSI: ffff888022fc0000 RDI: ffffc900017180a8 > RBP: ffffc900017180f0 R08: 0000000000000001 R09: 0000000000000000 > R10: ffffc900017180a8 R11: 0000000000000000 R12: fffff520002e3017 > R13: ffffc900017180a8 R14: ffffc900017180a8 R15: ffffc900017180b0 > FS: 00007f483b1d36c0(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffc90001717fd8 CR3: 000000004e7f6000 CR4: 0000000000352ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > <#DF> > > > __unwind_start+0x45f/0x7f0 arch/x86/kernel/unwind_orc.c:760 > unwind_start arch/x86/include/asm/unwind.h:64 [inline] > arch_stack_walk+0x74/0x100 arch/x86/kernel/stacktrace.c:24 > stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 > kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 > kasan_save_track+0x14/0x30 mm/kasan/common.c:68 > unpoison_slab_object mm/kasan/common.c:319 [inline] > __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:345 > kasan_slab_alloc include/linux/kasan.h:247 [inline] > slab_post_alloc_hook mm/slub.c:4085 [inline] > slab_alloc_node mm/slub.c:4134 [inline] > kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4141 > radix_tree_node_alloc.constprop.0+0x1e8/0x350 lib/radix-tree.c:253 > idr_get_free+0x528/0xa40 lib/radix-tree.c:1506 > idr_alloc_u32+0x191/0x2f0 lib/idr.c:46 > idr_alloc+0xc1/0x130 lib/idr.c:87 > p9_tag_alloc+0x394/0x870 net/9p/client.c:321 > p9_client_prepare_req+0x19f/0x4d0 net/9p/client.c:644 > p9_client_rpc+0x1c3/0xc10 net/9p/client.c:691 > p9_client_read_once+0x24f/0x820 net/9p/client.c:1575 > p9_client_read+0x13f/0x1b0 net/9p/client.c:1534 > v9fs_issue_read+0x115/0x310 fs/9p/vfs_addr.c:74 > netfs_retry_read_subrequests fs/netfs/read_retry.c:60 [inline] > netfs_retry_reads+0x153a/0x1d00 fs/netfs/read_retry.c:232 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:371 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:407 > netfs_dispatch_unbuffered_reads fs/netfs/direct_read.c:103 [inline] > netfs_unbuffered_read fs/netfs/direct_read.c:127 [inline] > netfs_unbuffered_read_iter_locked+0x12f6/0x19b0 fs/netfs/direct_read.c:221 > netfs_unbuffered_read_iter+0xc5/0x100 fs/netfs/direct_read.c:256 > v9fs_file_read_iter+0xbf/0x100 fs/9p/vfs_file.c:361 > io_iter_do_read io_uring/rw.c:771 [inline] > __io_read+0x320/0x1190 io_uring/rw.c:865 > io_read+0x1e/0x70 io_uring/rw.c:943 > io_issue_sqe+0x175/0x13d0 io_uring/io_uring.c:1739 > io_queue_sqe io_uring/io_uring.c:1953 [inline] > io_submit_sqe io_uring/io_uring.c:2209 [inline] > io_submit_sqes+0x9b4/0x2530 io_uring/io_uring.c:2324 > __do_sys_io_uring_enter+0xc0f/0x1170 io_uring/io_uring.c:3343 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7f483a37e719 > Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007f483b1d3038 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa > RAX: ffffffffffffffda RBX: 00007f483a536058 RCX: 00007f483a37e719 > RDX: 0000000000000000 RSI: 0000000000000567 RDI: 0000000000000007 > RBP: 00007f483a3f132e R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 0000000000000000 R14: 00007f483a536058 R15: 00007ffc2e04f068 > > Modules linked in: > ---[ end trace 0000000000000000 ]--- > RIP: 0010:unwind_next_frame+0x76/0x20c0 arch/x86/kernel/unwind_orc.c:470 > Code: 41 5f c3 cc cc cc cc 49 8d 6d 48 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 00 18 00 00 49 8b 45 48 <48> 89 44 24 08 49 8d 45 38 48 89 c2 48 89 04 24 48 b8 00 00 00 00 > RSP: 0018:ffffc90001717fe8 EFLAGS: 00010046 > RAX: ffffffff813d7404 RBX: 0000000000000001 RCX: ffffc90001718140 > RDX: 1ffff920002e301e RSI: ffff888022fc0000 RDI: ffffc900017180a8 > RBP: ffffc900017180f0 R08: 0000000000000001 R09: 0000000000000000 > R10: ffffc900017180a8 R11: 0000000000000000 R12: fffff520002e3017 > R13: ffffc900017180a8 R14: ffffc900017180a8 R15: ffffc900017180b0 > FS: 00007f483b1d36c0(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffc90001717fd8 CR3: 000000004e7f6000 CR4: 0000000000352ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > ---------------- > Code disassembly (best guess): > 0: 41 5f pop %r15 > 2: c3 ret > 3: cc int3 > 4: cc int3 > 5: cc int3 > 6: cc int3 > 7: 49 8d 6d 48 lea 0x48(%r13),%rbp > b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax > 12: fc ff df > 15: 48 89 ea mov %rbp,%rdx > 18: 48 c1 ea 03 shr $0x3,%rdx > 1c: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) > 20: 0f 85 00 18 00 00 jne 0x1826 > 26: 49 8b 45 48 mov 0x48(%r13),%rax > * 2a: 48 89 44 24 08 mov %rax,0x8(%rsp) <-- trapping instruction > 2f: 49 8d 45 38 lea 0x38(%r13),%rax > 33: 48 89 c2 mov %rax,%rdx > 36: 48 89 04 24 mov %rax,(%rsp) > 3a: 48 rex.W > 3b: b8 00 00 00 00 mov $0x0,%eax > > > --- > 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 -- Dominique Martinet | Asmadeus