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 E7E17C433F5 for ; Thu, 29 Sep 2022 20:40:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229572AbiI2Ukq (ORCPT ); Thu, 29 Sep 2022 16:40:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51272 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229688AbiI2Ukl (ORCPT ); Thu, 29 Sep 2022 16:40:41 -0400 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9181AFA0F7 for ; Thu, 29 Sep 2022 13:40:40 -0700 (PDT) Received: by mail-il1-f197.google.com with SMTP id h17-20020a056e021d9100b002f81bc83425so1976399ila.5 for ; Thu, 29 Sep 2022 13:40:40 -0700 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2022 13:40:39 -0700 (PDT) Date: Thu, 29 Sep 2022 13:40:39 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ee81a205e9d6e3d7@google.com> Subject: [syzbot] general protection fault in lmLogSync (2) From: syzbot To: jfs-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, shaggy@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: c3e0e1e23c70 Merge tag 'irq_urgent_for_v6.0' of git://git... git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=1599a048880000 kernel config: https://syzkaller.appspot.com/x/.config?x=ba0d23aa7e1ffaf5 dashboard link: https://syzkaller.appspot.com/bug?extid=e14b1036481911ae4d77 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13b404c0880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=179f60b8880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/e7f1f925f94e/disk-c3e0e1e2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/830dabeedf0d/vmlinux-c3e0e1e2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e14b1036481911ae4d77@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 1 PID: 3619 Comm: syz-executor117 Not tainted 6.0.0-rc7-syzkaller-00081-gc3e0e1e23c70 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline] RIP: 0010:lmLogSync+0x227/0xb00 fs/jfs/jfs_logmgr.c:937 Code: b2 fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 37 66 da fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 1a 66 da fe 48 8b 3b e8 32 89 b2 RSP: 0018:ffffc900039dfae0 EFLAGS: 00010206 RAX: 0000000000000006 RBX: 0000000000000030 RCX: 4daf7eec4cfcb600 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900039dfbe8 R08: ffffffff81b29a43 R09: ffffc900039dfa30 R10: fffff5200073bf49 R11: 1ffff9200073bf46 R12: dffffc0000000000 R13: ffff88807736d800 R14: 0000000000000000 R15: ffff888020ba2638 FS: 00005555574fa300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555557503628 CR3: 0000000021420000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: jfs_syncpt+0x79/0x90 fs/jfs/jfs_logmgr.c:1041 jfs_sync_fs+0x86/0xa0 fs/jfs/super.c:685 sync_filesystem+0xe8/0x220 fs/sync.c:56 generic_shutdown_super+0x6b/0x300 fs/super.c:474 kill_block_super+0x79/0xd0 fs/super.c:1427 deactivate_locked_super+0xa7/0xf0 fs/super.c:332 cleanup_mnt+0x4ce/0x560 fs/namespace.c:1186 task_work_run+0x146/0x1c0 kernel/task_work.c:177 ptrace_notify+0x29a/0x340 kernel/signal.c:2353 ptrace_report_syscall include/linux/ptrace.h:420 [inline] ptrace_report_syscall_exit include/linux/ptrace.h:482 [inline] syscall_exit_work+0x8c/0xe0 kernel/entry/common.c:249 syscall_exit_to_user_mode_prepare+0x63/0xc0 kernel/entry/common.c:276 __syscall_exit_to_user_mode_work kernel/entry/common.c:281 [inline] syscall_exit_to_user_mode+0xa/0x60 kernel/entry/common.c:294 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f50d6eec917 Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 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:00007ffcf5fdfe28 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f50d6eec917 RDX: 00007ffcf5fdfee9 RSI: 000000000000000a RDI: 00007ffcf5fdfee0 RBP: 00007ffcf5fdfee0 R08: 00000000ffffffff R09: 00007ffcf5fdfcc0 R10: 00005555574fb653 R11: 0000000000000206 R12: 00007ffcf5fe0f50 R13: 00005555574fb5f0 R14: 00007ffcf5fdfe50 R15: 0000000000000001 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline] RIP: 0010:lmLogSync+0x227/0xb00 fs/jfs/jfs_logmgr.c:937 Code: b2 fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 37 66 da fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 1a 66 da fe 48 8b 3b e8 32 89 b2 RSP: 0018:ffffc900039dfae0 EFLAGS: 00010206 RAX: 0000000000000006 RBX: 0000000000000030 RCX: 4daf7eec4cfcb600 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900039dfbe8 R08: ffffffff81b29a43 R09: ffffc900039dfa30 R10: fffff5200073bf49 R11: 1ffff9200073bf46 R12: dffffc0000000000 R13: ffff88807736d800 R14: 0000000000000000 R15: ffff888020ba2638 FS: 00005555574fa300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005613768c4db8 CR3: 0000000021420000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: b2 fe mov $0xfe,%dl 2: 49 8d 5f f0 lea -0x10(%r15),%rbx 6: 48 89 d8 mov %rbx,%rax 9: 48 c1 e8 03 shr $0x3,%rax d: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) 12: 74 08 je 0x1c 14: 48 89 df mov %rbx,%rdi 17: e8 37 66 da fe callq 0xfeda6653 1c: 48 8b 1b mov (%rbx),%rbx 1f: 48 83 c3 30 add $0x30,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 1a 66 da fe callq 0xfeda6653 39: 48 8b 3b mov (%rbx),%rdi 3c: e8 .byte 0xe8 3d: 32 .byte 0x32 3e: 89 .byte 0x89 3f: b2 .byte 0xb2 --- 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