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kernel BUG at fs/ext4/super.c:6436!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1075 Comm: syz-executor.2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:ext4_quota_enable fs/ext4/super.c:6436 [inline]
RIP: 0010:ext4_enable_quotas+0x6c7/0x6d0 fs/ext4/super.c:6483
Code: ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c a6 fa ff ff 4c 89 f7 e8 98 ec c0 ff e9 99 fa ff ff e8 9e 40 96 02 e8 e9 fc 86 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:ffffc900029d7950 EFLAGS: 00010293
RAX: ffffffff81dca8b7 RBX: ffff8881162fd000 RCX: ffff888117608000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900029d79f0 R08: dffffc0000000000 R09: ffffed1023ed9707
R10: ffffed1023ed9707 R11: 1ffff11023ed9706 R12: 0000000000000004
R13: ffff88811f3f8464 R14: 0000000000000000 R15: 0000000000000001
FS:  00007fcae70686c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000001 CR3: 0000000118131000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_fill_super+0x82a9/0x8b60 fs/ext4/super.c:5060
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 ext4_mount+0x34/0x40 fs/ext4/super.c:6662
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:2997
 path_mount+0x572/0xc80 fs/namespace.c:3327
 do_mount fs/namespace.c:3340 [inline]
 __do_sys_mount fs/namespace.c:3548 [inline]
 __se_sys_mount+0x318/0x380 fs/namespace.c:3525
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3525
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcae74e71ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcae7067ee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fcae7067f80 RCX: 00007fcae74e71ea
RDX: 00000000200005c0 RSI: 0000000020000000 RDI: 00007fcae7067f40
RBP: 00000000200005c0 R08: 00007fcae7067f80 R09: 0000000000200810
R10: 0000000000200810 R11: 0000000000000246 R12: 0000000020000000
R13: 00007fcae7067f40 R14: 00000000000004da R15: 0000000020001400
Modules linked in:
---[ end trace ae57721355e3285d ]---
RIP: 0010:ext4_quota_enable fs/ext4/super.c:6436 [inline]
RIP: 0010:ext4_enable_quotas+0x6c7/0x6d0 fs/ext4/super.c:6483
Code: ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c a6 fa ff ff 4c 89 f7 e8 98 ec c0 ff e9 99 fa ff ff e8 9e 40 96 02 e8 e9 fc 86 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:ffffc900029d7950 EFLAGS: 00010293
RAX: ffffffff81dca8b7 RBX: ffff8881162fd000 RCX: ffff888117608000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900029d79f0 R08: dffffc0000000000 R09: ffffed1023ed9707
R10: ffffed1023ed9707 R11: 1ffff11023ed9706 R12: 0000000000000004
R13: ffff88811f3f8464 R14: 0000000000000000 R15: 0000000000000001
FS:  00007fcae70686c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc3fd6fdf8 CR3: 0000000118131000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400