REISERFS (device loop2): Using rupasov hash to sort names
BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
PGD a2b2d067 P4D a2b2d067 PUD a15b4067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 12825 Comm: syz-executor.2 Not tainted 4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:          (null)
Code: Bad RIP value.
RSP: 0018:ffff8880254f78a8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 1ffff11004a9ef18 RCX: ffffc90009f4f000
RDX: 0000000000000000 RSI: ffff88808d694e00 RDI: ffff88802dcf4740
RBP: ffffffff8878d700 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff88808d694e00
R13: ffff88802dcf4740 R14: ffff8880254f7a38 R15: ffff8880254f78e0
FS:  00007f1ed5ab0700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000000a8897000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __lookup_slow+0x246/0x4a0 fs/namei.c:1672
 lookup_one_len+0x163/0x190 fs/namei.c:2544
 reiserfs_lookup_privroot+0x92/0x280 fs/reiserfs/xattr.c:970
 reiserfs_fill_super+0x202c/0x2cf0 fs/reiserfs/super.c:2179
 mount_bdev+0x2fc/0x3b0 fs/super.c:1158
 mount_fs+0xa3/0x310 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x113c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x467afa
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1ed5aaffa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000467afa
RDX: 0000000020000000 RSI: 00000000200000c0 RDI: 00007f1ed5ab0000
RBP: 00007f1ed5ab0040 R08: 00007f1ed5ab0040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 00000000200000c0 R14: 00007f1ed5ab0000 R15: 0000000020011500
Modules linked in:
CR2: 0000000000000000
ntfs: (device loop3): parse_options(): Option utf8 is no longer supported, using option nls=utf8. Please use option nls=utf8 in the future and make sure utf8 is compiled either as a module or into the kernel.
ntfs: (device loop3): ntfs_fill_super(): Unable to determine device size.
---[ end trace 72576efb37ab2a98 ]---
RIP: 0010:          (null)
Code: Bad RIP value.
ntfs: (device loop3): parse_options(): Option utf8 is no longer supported, using option nls=utf8. Please use option nls=utf8 in the future and make sure utf8 is compiled either as a module or into the kernel.
RSP: 0018:ffff8880254f78a8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 1ffff11004a9ef18 RCX: ffffc90009f4f000
RDX: 0000000000000000 RSI: ffff88808d694e00 RDI: ffff88802dcf4740
RBP: ffffffff8878d700 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff88808d694e00
ntfs: (device loop3): ntfs_fill_super(): Unable to determine device size.
R13: ffff88802dcf4740 R14: ffff8880254f7a38 R15: ffff8880254f78e0
FS:  00007f1ed5ab0700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6d653d4000 CR3: 00000000a8897000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400