REISERFS (device loop2): Using r5 hash to sort names gfs2: not a GFS2 filesystem REISERFS (device loop2): using 3.5.x disk format BUG: unable to handle kernel NULL pointer dereference at (null) IP: (null) PGD 8f759067 P4D 8f759067 PUD a5477067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 16114 Comm: syz-executor.2 Not tainted 4.14.198-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a164e040 task.stack: ffff8880518f8000 RIP: 0010: (null) RSP: 0018:ffff8880518ffa30 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffffff86b6a680 RCX: ffffc90008b18000 RDX: 0000000000000000 RSI: ffff8880824f6760 RDI: ffff88803352a4e8 RBP: ffff88803352a4e8 R08: 0000000000000001 R09: 0000000000000002 R10: 0000000000000000 R11: ffff8880a164e040 R12: ffff8880824f6760 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000076 FS: 00007f1722b46700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000907f3000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lookup_real fs/namei.c:1555 [inline] __lookup_hash fs/namei.c:1575 [inline] __lookup_hash+0x1bb/0x270 fs/namei.c:1563 lookup_one_len+0x279/0x3a0 fs/namei.c:2539 reiserfs_lookup_privroot+0x92/0x270 fs/reiserfs/xattr.c:963 reiserfs_fill_super+0x1ad8/0x28b6 fs/reiserfs/super.c:2179 mount_bdev+0x2b3/0x360 fs/super.c:1134 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4608da RSP: 002b:00007f1722b45a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f1722b45b20 RCX: 00000000004608da RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f1722b45ae0 RBP: 00007f1722b45ae0 R08: 00007f1722b45b20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020011100 Code: Bad RIP value. RIP: (null) RSP: ffff8880518ffa30 CR2: 0000000000000000 ---[ end trace a2cd034d6bd153c9 ]---