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: 9009 Comm: syz-executor.4 Not tainted 5.4.70-syzkaller-00064-gcfc2b5293ada #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 e2 7c c0 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 e3 36 ee ff 48 83 3b 00 74 50 e8
RSP: 0018:ffff8881ce8cfcc8 EFLAGS: 00010202
RAX: 000000000000000d RBX: 0000000000000068 RCX: 0000000000040000
RDX: ffffc90005463000 RSI: 000000000003abdb RDI: 000000000003abdc
RBP: 0000000000000000 R08: ffffffff81742a28 R09: 000000000000000c
R10: ffffed103b706515 R11: 0000000000000000 R12: ffff8881d8adbe00
R13: dffffc0000000000 R14: ffff8881c89b1140 R15: ffffffff84c78e78
FS:  00007f415c78c700(0000) GS:ffff8881db800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000043f630 CR3: 000000019d612005 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 vfs_get_tree+0x85/0x260 fs/super.c:1547
 do_new_mount fs/namespace.c:2822 [inline]
 do_mount+0x1883/0x2630 fs/namespace.c:3142
 ksys_mount+0xc2/0xf0 fs/namespace.c:3351
 __do_sys_mount fs/namespace.c:3365 [inline]
 __se_sys_mount fs/namespace.c:3362 [inline]
 __x64_sys_mount+0xb1/0xc0 fs/namespace.c:3362
 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4608aa
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:00007f415c78ba88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f415c78bb20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 00000000200000c0 RDI: 00007f415c78bae0
RBP: 00007f415c78bae0 R08: 00007f415c78bb20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 00000000200000c0 R14: 0000000020000200 R15: 0000000020000300
Modules linked in:
---[ end trace 93a939487c3407f3 ]---
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 e2 7c c0 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 e3 36 ee ff 48 83 3b 00 74 50 e8
RSP: 0018:ffff8881ce8cfcc8 EFLAGS: 00010202
RAX: 000000000000000d RBX: 0000000000000068 RCX: 0000000000040000
RDX: ffffc90005463000 RSI: 000000000003abdb RDI: 000000000003abdc
RBP: 0000000000000000 R08: ffffffff81742a28 R09: 000000000000000c
R10: ffffed103b706515 R11: 0000000000000000 R12: ffff8881d8adbe00
R13: dffffc0000000000 R14: ffff8881c89b1140 R15: ffffffff84c78e78
FS:  00007f415c78c700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000026e79b8 CR3: 000000019d612003 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600