EXT4-fs (loop3): not enough memory for 1 flex groups
EXT4-fs (loop3): unable to initialize flex_bg meta info!
EXT4-fs (loop3): 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: 25103 Comm: syz-executor.3 Not tainted 4.19.169-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:mount_fs+0xe0/0x310 fs/super.c:1266
Code: 81 fc 00 f0 ff ff 0f 87 eb 01 00 00 e8 19 16 bf ff 49 8d bc 24 c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 01 00 00 4d 8b ac 24 c8 00 00 00 4d 85 ed 0f
RSP: 0018:ffff88804cc07ce0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff8a0a8b40 RCX: ffffc9000c228000
RDX: 0000000000000019 RSI: ffffffff81a34437 RDI: 00000000000000c8
RBP: 0000000000000000 R08: 0000000000400000 R09: fffffffffffff000
R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88805409e400 R14: 0000000000000000 R15: ffff888097b00000
FS:  00007fb3ea55f700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30323000 CR3: 00000000a63d7000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 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: 0033:0x460c6a
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007fb3ea55ea78 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb3ea55eb10 RCX: 0000000000460c6a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fb3ea55ead0
RBP: 00007fb3ea55ead0 R08: 00007fb3ea55eb10 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020013000
Modules linked in:
---[ end trace 71e61cf9533fc832 ]---
RIP: 0010:mount_fs+0xe0/0x310 fs/super.c:1266
Code: 81 fc 00 f0 ff ff 0f 87 eb 01 00 00 e8 19 16 bf ff 49 8d bc 24 c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 01 00 00 4d 8b ac 24 c8 00 00 00 4d 85 ed 0f
RSP: 0018:ffff88804cc07ce0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff8a0a8b40 RCX: ffffc9000c228000
RDX: 0000000000000019 RSI: ffffffff81a34437 RDI: 00000000000000c8
RBP: 0000000000000000 R08: 0000000000400000 R09: fffffffffffff000
R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88805409e400 R14: 0000000000000000 R15: ffff888097b00000
FS:  00007fb3ea55f700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30323000 CR3: 00000000a63d7000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400