Quota error (device loop5): qtree_write_dquot: Error -28 occurred while creating quota
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'.
EXT4-fs (loop0): unsupported descriptor size 0
BUG: unable to handle kernel paging request at fffffbfff9f10fb0
IP: __read_once_size include/linux/compiler.h:183 [inline]
IP: atomic_read arch/x86/include/asm/atomic.h:27 [inline]
IP: dqput.part.0+0x9d/0x750 fs/quota/dquot.c:761
PGD 21ffec067 P4D 21ffec067 PUD 21ffeb067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 14897 Comm: syz-executor.5 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888090ad2240 task.stack: ffff8880a5730000
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:dqput.part.0+0x9d/0x750 fs/quota/dquot.c:761
RSP: 0018:ffff8880a5737a90 EFLAGS: 00010282
RAX: dffffc0000000000 RBX: ffffffffcf887c8d RCX: 0000000000005599
RDX: 1ffffffff0f82502 RSI: 0000000000000001 RDI: ffffffff87c12804
RBP: dffffc0000000000 R08: ffffffff8a0a7648 R09: 00000000000401c9
R10: ffff888090ad2af0 R11: ffff888090ad2240 R12: 0000000000000008
R13: fffffbfff9f10fb0 R14: ffffffffcf887da5 R15: ffffffffcf887d85
FS:  000000000231e940(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff9f10fb0 CR3: 000000004e963000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 dqput fs/quota/dquot.c:748 [inline]
 dqput_all fs/quota/dquot.c:391 [inline]
 __dquot_drop+0x193/0x250 fs/quota/dquot.c:1564
 dquot_drop fs/quota/dquot.c:1589 [inline]
 dquot_drop+0x13e/0x190 fs/quota/dquot.c:1567
 ext4_clear_inode+0x31/0x1d0 fs/ext4/super.c:1110
 ext4_evict_inode+0x1f1/0x1500 fs/ext4/inode.c:347
 evict+0x2c8/0x700 fs/inode.c:555
 dispose_list+0x109/0x1e0 fs/inode.c:590
 evict_inodes+0x2cd/0x3a0 fs/inode.c:640
 generic_shutdown_super+0xb3/0x370 fs/super.c:438
 kill_block_super+0x95/0xe0 fs/super.c:1161
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 deactivate_super+0x7f/0xa0 fs/super.c:350
 cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x4607c7
RSP: 002b:00007fffd9da5d98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000004607c7
RDX: 0000000000403158 RSI: 0000000000000002 RDI: 00007fffd9da5e40
RBP: 0000000000000a55 R08: 0000000000000000 R09: 000000000000000b
R10: 0000000000000005 R11: 0000000000000246 R12: 00007fffd9da6ed0
R13: 000000000231fa60 R14: 0000000000000000 R15: 00007fffd9da6ed0
Code: 8d b3 18 01 00 00 49 c1 ed 03 41 83 e4 07 49 01 ed 41 83 c4 03 e8 a4 82 70 01 e8 7f 82 b7 ff 48 c7 c7 00 28 c1 87 e8 13 78 b1 04 <41> 0f b6 45 00 41 38 c4 7c 08 84 c0 0f 85 cf 04 00 00 8b 83 f8 
RIP: __read_once_size include/linux/compiler.h:183 [inline] RSP: ffff8880a5737a90
RIP: atomic_read arch/x86/include/asm/atomic.h:27 [inline] RSP: ffff8880a5737a90
RIP: dqput.part.0+0x9d/0x750 fs/quota/dquot.c:761 RSP: ffff8880a5737a90
CR2: fffffbfff9f10fb0
---[ end trace eb4cf3614bf8f21f ]---