RBP: 00007f2bd2e28040 R08: 00007f2bd2e28040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f2bd2e28000 R15: 0000000020013000
EXT4-fs (loop4): not enough memory for 1 flex groups
EXT4-fs (loop4): unable to initialize flex_bg meta info!
EXT4-fs (loop4): mount failed
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 32571 Comm: syz-executor.4 Tainted: G        W         5.4.125-syzkaller-00005-gb8b657d4d5e9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:legacy_get_tree+0xfe/0x170 fs/fs_context.c:652
Code: 89 ff 89 ee 48 89 da ff 14 24 48 89 c5 48 3d 01 f0 ff ff 72 07 e8 12 87 bf ff eb 48 48 89 eb 48 83 c3 68 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 03 47 ee ff 48 83 3b 00 74 50 e8
RSP: 0018:ffff88813399fcd0 EFLAGS: 00010202
RAX: 000000000000000d RBX: 0000000000000068 RCX: 0000000000040000
RDX: ffffc90002353000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff8198f288 R09: 000000000000000c
R10: ffffffff84800000 R11: 0000000000000000 R12: ffff8881e2763400
R13: dffffc0000000000 R14: ffff8881e5a5a340 R15: ffffffff85faa1c0
FS:  00007f2bd2e28700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32d21000 CR3: 00000001a10b9000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vfs_get_tree+0x83/0x260 fs/super.c:1547
 do_new_mount fs/namespace.c:2825 [inline]
 do_mount+0x19d0/0x2670 fs/namespace.c:3145
 ksys_mount+0xc2/0xf0 fs/namespace.c:3354
 __do_sys_mount fs/namespace.c:3368 [inline]
 __se_sys_mount fs/namespace.c:3365 [inline]
 __x64_sys_mount+0xb1/0xc0 fs/namespace.c:3365
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f2bd50b1c5a
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:00007f2bd2e27fa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f2bd50b1c5a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f2bd2e28000
RBP: 00007f2bd2e28040 R08: 00007f2bd2e28040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f2bd2e28000 R15: 0000000020013000
Modules linked in:
---[ end trace 8b7cb7c92d540719 ]---
RIP: 0010:legacy_get_tree+0xfe/0x170 fs/fs_context.c:652
Code: 89 ff 89 ee 48 89 da ff 14 24 48 89 c5 48 3d 01 f0 ff ff 72 07 e8 12 87 bf ff eb 48 48 89 eb 48 83 c3 68 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 03 47 ee ff 48 83 3b 00 74 50 e8
RSP: 0018:ffff88813399fcd0 EFLAGS: 00010202
RAX: 000000000000000d RBX: 0000000000000068 RCX: 0000000000040000
RDX: ffffc90002353000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff8198f288 R09: 000000000000000c
R10: ffffffff84800000 R11: 0000000000000000 R12: ffff8881e2763400
R13: dffffc0000000000 R14: ffff8881e5a5a340 R15: ffffffff85faa1c0
FS:  00007f2bd2e28700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4b67bd0000 CR3: 00000001a10b9000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 ff                	mov    %edi,%edi
   2:	89 ee                	mov    %ebp,%esi
   4:	48 89 da             	mov    %rbx,%rdx
   7:	ff 14 24             	callq  *(%rsp)
   a:	48 89 c5             	mov    %rax,%rbp
   d:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
  13:	72 07                	jb     0x1c
  15:	e8 12 87 bf ff       	callq  0xffbf872c
  1a:	eb 48                	jmp    0x64
  1c:	48 89 eb             	mov    %rbp,%rbx
  1f:	48 83 c3 68          	add    $0x68,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 03 47 ee ff       	callq  0xffee473c
  39:	48 83 3b 00          	cmpq   $0x0,(%rbx)
  3d:	74 50                	je     0x8f
  3f:	e8                   	.byte 0xe8