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Message-ID: <001a113eba282f2ffc0568b76123@google.com> Date: Sat, 31 Mar 2018 08:55:02 -0700 From: syzbot <syzbot+6820505ae5978f4f8f2f@...kaller.appspotmail.com> To: colin.king@...onical.com, dhowells@...hat.com, gregkh@...uxfoundation.org, jack@...e.cz, linux-kernel@...r.kernel.org, mingo@...nel.org, reiserfs-devel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: kernel BUG at fs/reiserfs/journal.c:LINE! Hello, syzbot hit the following crash on upstream commit 9dd2326890d89a5179967c947dab2bab34d7ddee (Fri Mar 30 17:29:47 2018 +0000) Merge tag 'ceph-for-4.16-rc8' of git://github.com/ceph/ceph-client syzbot dashboard link: https://syzkaller.appspot.com/bug?extid=6820505ae5978f4f8f2f syzkaller reproducer: https://syzkaller.appspot.com/x/repro.syz?id=5883680186695680 Raw console output: https://syzkaller.appspot.com/x/log.txt?id=6706763961204736 Kernel config: https://syzkaller.appspot.com/x/.config?id=-2760467897697295172 compiler: gcc (GCC) 7.1.1 20170620 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+6820505ae5978f4f8f2f@...kaller.appspotmail.com It will help syzbot understand when the bug is fixed. See footer for details. If you forward the report, please keep this part and the footer. REISERFS (device loop7): using 3.5.x disk format REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal REISERFS (device loop5): using 3.5.x disk format REISERFS (device loop3): checking transaction log (loop3) ------------[ cut here ]------------ kernel BUG at fs/reiserfs/journal.c:3640! REISERFS (device loop0): using ordered data mode invalid opcode: 0000 [#1] SMP KASAN reiserfs: using flush barriers Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4674 Comm: syz-executor5 Not tainted 4.16.0-rc7+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:check_journal_end fs/reiserfs/journal.c:3640 [inline] RIP: 0010:do_journal_end+0x39ae/0x4ce0 fs/reiserfs/journal.c:4037 RSP: 0018:ffff8801aafbf1a0 EFLAGS: 00010293 RAX: ffff8801aaf0c100 RBX: ffffc9000273d000 RCX: ffffffff81e6637e REISERFS (device loop1): found reiserfs format "3.5" with non-standard journal RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801aafbfa04 RBP: ffff8801aafbf758 R08: ffffffff81e76040 R09: 0000000000000004 R10: ffff8801aafbf168 R11: 0000000000000004 R12: 0000000000000000 R13: ffffc9000273d058 R14: ffffc9000273d048 R15: ffff8801aafbfa10 FS: 00007f3bb0f9f700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000625208 CR3: 00000001a9148006 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: init_special_inode: bogus i_mode (0) for inode loop4:2 REISERFS warning (device loop4): vs-13075 reiserfs_read_locked_inode: dead inode read from disk [1 2 0x0 SD]. This is likely to be race with knfsd. Ignore journal_end+0x239/0x2d0 fs/reiserfs/journal.c:3409 REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 reiserfs_fill_super+0x2a66/0x33a0 fs/reiserfs/super.c:2168 init_special_inode: bogus i_mode (0) for inode loop3:2 mount_bdev+0x2b7/0x370 fs/super.c:1119 REISERFS warning (device loop3): vs-13075 reiserfs_read_locked_inode: dead inode read from disk [1 2 0x0 SD]. This is likely to be race with knfsd. Ignore get_super_block+0x34/0x40 fs/reiserfs/super.c:2605 mount_fs+0x66/0x2d0 fs/super.c:1222 vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 REISERFS (device loop1): using ordered data mode vfs_kern_mount fs/namespace.c:2509 [inline] do_new_mount fs/namespace.c:2512 [inline] do_mount+0xea4/0x2bb0 fs/namespace.c:2842 reiserfs: using flush barriers SYSC_mount fs/namespace.c:3058 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3035 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4578aa RSP: 002b:00007f3bb0f9ebb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 00000000004578aa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f3bb0f9ec00 RBP: 0000000000000007 R08: 0000000020011500 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 000000000000066d R14: 00000000006fbad8 R15: 0000000000000001 Code: e8 c8 fe fe ff e9 b9 f9 ff ff e8 de 01 8b ff 0f 0b e8 d7 01 8b ff 0f 0b e8 d0 01 8b ff 0f 0b e8 c9 01 8b ff 0f 0b e8 c2 01 8b ff <0f> 0b 4c 8d a5 98 fc ff ff e8 b4 01 8b ff 48 8d bb d0 01 00 00 RIP: check_journal_end fs/reiserfs/journal.c:3640 [inline] RSP: ffff8801aafbf1a0 RIP: do_journal_end+0x39ae/0x4ce0 fs/reiserfs/journal.c:4037 RSP: ffff8801aafbf1a0 ---[ end trace 85601a98bc340fd3 ]--- --- This bug is generated by a dumb bot. It may contain errors. See https://goo.gl/tpsmEJ for details. Direct all questions to syzkaller@...glegroups.com. syzbot will keep track of this bug report. If you forgot to add the Reported-by tag, once the fix for this bug is merged into any tree, please reply to this email with: #syz fix: exact-commit-title If you want to test a patch for this bug, please reply with: #syz test: git://repo/address.git branch and provide the patch inline or as an attachment. To mark this as a duplicate of another syzbot report, please reply with: #syz dup: exact-subject-of-another-report If it's a one-off invalid bug report, please reply with: #syz invalid Note: if the crash happens again, it will cause creation of a new bug report. Note: all commands must start from beginning of the line in the email body.
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