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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4D8CCC00140 for ; Wed, 24 Aug 2022 16:35:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239555AbiHXQfd (ORCPT ); Wed, 24 Aug 2022 12:35:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56964 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239541AbiHXQfc (ORCPT ); Wed, 24 Aug 2022 12:35:32 -0400 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 82AF580F51 for ; Wed, 24 Aug 2022 09:35:31 -0700 (PDT) Received: by mail-il1-f198.google.com with SMTP id i26-20020a056e021d1a00b002e9865e8963so8285664ila.14 for ; Wed, 24 Aug 2022 09:35:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc; bh=igPw/4yA+mTANwSdMoZucgTYkONKNQ2e1OHP2G/JPo0=; b=K0bD5uxsV47aAjVUdpqylHWD8Eqq3VA9SKVIiXUlYZoy+tTQ4KmahboEhiP3+lC3GW nz4PS4ugb3nl/U9WeSaHE2GLZNLEnJARmAEOVuKLrh6G3m3YSm7nDDdpiTRS3tTr6y2J Q7BFPmgNjtyG2yOWEw4BwwpozMcMtPGbWnbsBaNOfyL5wDjsL4vVCrlM0/EYs5s+I6Dp qpOseUtFWSwy6GYfOMQCFDWpmwH2fswqdHJUEUaXWdGRzEFcfbzFB48BsSjuD0iUXChA nwNya7gcYr45lahlYs3bRkCR+OHMVTXdb5Ih/xm3Y23OxskfxFzBpd/NhSxa4LYM8MQg Knzw== X-Gm-Message-State: ACgBeo1hZ8Y3BW8wLiTALu0CRCfx9Ezb4ekoeZ9y9grA+9Uc1Qz7pA8x 5sD6Plpo9Um/0cGXx7Q0RuRE5W4AvRDAG4UEB/VcbHZO6YQH X-Google-Smtp-Source: AA6agR5bgppAZ7QEzoIstb2KBTdF0RBmHECgpmY4kmUqRRoeAiwbgTDcu5VE+GfWrTZs5Qckj5AW/LVVrGs+AGXZu2jtZJ4f3U/a MIME-Version: 1.0 X-Received: by 2002:a05:6638:d02:b0:346:f5ef:6ab2 with SMTP id q2-20020a0566380d0200b00346f5ef6ab2mr14004741jaj.300.1661358930783; Wed, 24 Aug 2022 09:35:30 -0700 (PDT) Date: Wed, 24 Aug 2022 09:35:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e9f4e905e6ff4495@google.com> Subject: [syzbot] general protection fault in __io_sync_cancel From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: df0219d11b6f Merge tag 'parisc-for-6.0-2' of git://git.ker.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=108d7fcb080000 kernel config: https://syzkaller.appspot.com/x/.config?x=911efaff115942bb dashboard link: https://syzkaller.appspot.com/bug?extid=bf76847df5f7359c9e09 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13ef1715080000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17fcebc3080000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bf76847df5f7359c9e09@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 3614 Comm: syz-executor233 Not tainted 6.0.0-rc2-syzkaller-00044-gdf0219d11b6f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:__io_sync_cancel+0x10d/0x1c0 io_uring/cancel.c:224 Code: 48 c1 ea 03 80 3c 02 00 0f 85 aa 00 00 00 49 8b 86 f8 00 00 00 48 8d 1c d8 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 8e 00 00 00 48 8b 1b 48 8d 7d 08 48 b8 00 00 00 RSP: 0018:ffffc900038ffc20 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff83f87914 RDI: ffff888146d8a0f8 RBP: ffffc900038ffce0 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88801c9df800 R14: ffff888146d8a000 R15: 0000000000000000 FS: 0000555556c5e300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000005d84c8 CR3: 0000000070564000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: io_sync_cancel+0x240/0x630 io_uring/cancel.c:265 __io_uring_register io_uring/io_uring.c:3833 [inline] __do_sys_io_uring_register+0x5c9/0x1110 io_uring/io_uring.c:3878 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f9ae908dd29 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc2e5075e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9ae908dd29 RDX: 0000000020000000 RSI: 0000000000000018 RDI: 000000000000000a RBP: 00007f9ae9051ed0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 00007f9ae9051f60 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__io_sync_cancel+0x10d/0x1c0 io_uring/cancel.c:224 Code: 48 c1 ea 03 80 3c 02 00 0f 85 aa 00 00 00 49 8b 86 f8 00 00 00 48 8d 1c d8 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 8e 00 00 00 48 8b 1b 48 8d 7d 08 48 b8 00 00 00 RSP: 0018:ffffc900038ffc20 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff83f87914 RDI: ffff888146d8a0f8 RBP: ffffc900038ffce0 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88801c9df800 R14: ffff888146d8a000 R15: 0000000000000000 FS: 0000555556c5e300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f622cf74268 CR3: 0000000070564000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 aa 00 00 00 jne 0xb8 e: 49 8b 86 f8 00 00 00 mov 0xf8(%r14),%rax 15: 48 8d 1c d8 lea (%rax,%rbx,8),%rbx 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 da mov %rbx,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 8e 00 00 00 jne 0xc2 34: 48 8b 1b mov (%rbx),%rbx 37: 48 8d 7d 08 lea 0x8(%rbp),%rdi 3b: 48 rex.W 3c: b8 .byte 0xb8 3d: 00 00 add %al,(%rax) --- 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches