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kernel BUG at fs/ext4/super.c:6440!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 3001 Comm: syz-executor.3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:ext4_quota_enable fs/ext4/super.c:6440 [inline]
RIP: 0010:ext4_enable_quotas+0x6c7/0x6d0 fs/ext4/super.c:6487
Code: ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c a6 fa ff ff 4c 89 f7 e8 e8 04 c0 ff e9 99 fa ff ff e8 7e 97 9e 02 e8 19 77 85 ff <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900025ef910 EFLAGS: 00010293
RAX: ffffffff81df3fa7 RBX: ffff888116950000 RCX: ffff888111f50000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900025ef9b0 R08: ffff888121b56773 R09: 1ffff1102436acee
R10: dffffc0000000000 R11: ffffed102436acef R12: 0000000000000004
R13: ffff888113b9f464 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f487b4bf6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc916129d58 CR3: 00000001073c0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_fill_super+0x84cc/0x8d90 fs/ext4/super.c:5064
 mount_bdev+0x26a/0x380 fs/super.c:1453
 ext4_mount+0x34/0x40 fs/ext4/super.c:6666
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1583
 do_new_mount+0x25a/0xa30 fs/namespace.c:3006
 path_mount+0x581/0xca0 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f487b92d70a
Code: 48 c7 c2 d0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 d0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f487b4beed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f487b4bef70 RCX: 00007f487b92d70a
RDX: 00000000200005c0 RSI: 0000000020000000 RDI: 00007f487b4bef30
RBP: 00000000200005c0 R08: 00007f487b4bef70 R09: 0000000000200810
R10: 0000000000200810 R11: 0000000000000246 R12: 0000000020000000
R13: 00007f487b4bef30 R14: 00000000000004da R15: 0000000020001400
Modules linked in:
---[ end trace ec57816b5d75ed67 ]---
RIP: 0010:ext4_quota_enable fs/ext4/super.c:6440 [inline]
RIP: 0010:ext4_enable_quotas+0x6c7/0x6d0 fs/ext4/super.c:6487
Code: ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c a6 fa ff ff 4c 89 f7 e8 e8 04 c0 ff e9 99 fa ff ff e8 7e 97 9e 02 e8 19 77 85 ff <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900025ef910 EFLAGS: 00010293
RAX: ffffffff81df3fa7 RBX: ffff888116950000 RCX: ffff888111f50000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900025ef9b0 R08: ffff888121b56773 R09: 1ffff1102436acee
R10: dffffc0000000000 R11: ffffed102436acef R12: 0000000000000004
R13: ffff888113b9f464 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f487b4bf6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020009080 CR3: 00000001073c0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400