EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): re-mounted. Opts: 
Quota error (device loop0): qtree_write_dquot: Error -394896789 occurred while creating quota
EXT4-fs error (device loop0): ext4_mb_generate_buddy:808: group 0, block bitmap and bg descriptor inconsistent: 8192 vs 22 free clusters
Quota error (device loop0): write_blk: dquota write failed
Quota error (device loop0): qtree_write_dquot: Error -28 occurred while creating quota
BUG: unable to handle page fault for address: fffffbfffd0ecb6f
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 21ffe5067 P4D 21ffe5067 PUD 21ffe4067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6842 Comm: syz-executor578 Not tainted 5.9.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:91 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:108 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:183 [inline]
RIP: 0010:check_memory_region+0x80/0x2f0 mm/kasan/generic.c:192
Code: 01 00 00 00 00 fc ff df 4d 01 ea 4d 89 d6 4d 29 ce 49 83 fe 10 7f 2d 4d 85 f6 0f 84 ab 01 00 00 4c 89 cb 4c 29 d3 0f 1f 40 00 <45> 0f b6 19 45 84 db 0f 85 f3 01 00 00 49 ff c1 48 ff c3 75 eb e9
RSP: 0018:ffffc90000ec7a20 EFLAGS: 00010287
RAX: 97d3653d8b240001 RBX: ffffffffffffffff RCX: ffffffff81e02447
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffe8765b7b
RBP: ffffffffe8765a6b R08: dffffc0000000000 R09: fffffbfffd0ecb6f
R10: fffffbfffd0ecb70 R11: 0000000000000000 R12: 1ffffffffd0ecb6f
R13: dffffc0000000001 R14: 0000000000000001 R15: ffffffffe8765b7b
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfffd0ecb6f CR3: 000000000968d000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 instrument_atomic_read include/linux/instrumented.h:56 [inline]
 atomic_read include/asm-generic/atomic-instrumented.h:27 [inline]
 dqput+0x77/0x770 fs/quota/dquot.c:770
 dqput_all fs/quota/dquot.c:397 [inline]
 __dquot_drop fs/quota/dquot.c:1577 [inline]
 dquot_drop+0x1dd/0x2a0 fs/quota/dquot.c:1602
 ext4_clear_inode+0x4e/0x170 fs/ext4/super.c:1226
 ext4_evict_inode+0x316/0x1090 fs/ext4/inode.c:330
 evict+0x2bb/0x6d0 fs/inode.c:576
 dispose_list fs/inode.c:611 [inline]
 evict_inodes+0x608/0x690 fs/inode.c:661
 generic_shutdown_super+0x94/0x2a0 fs/super.c:454
 kill_block_super+0x79/0xd0 fs/super.c:1444
 deactivate_locked_super+0xa7/0xf0 fs/super.c:335
 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1118
 task_work_run+0x137/0x1c0 kernel/task_work.c:141
 exit_task_work include/linux/task_work.h:25 [inline]
 do_exit+0x5f3/0x1f20 kernel/exit.c:806
 do_group_exit+0x161/0x2d0 kernel/exit.c:903
 __do_sys_exit_group+0x13/0x20 kernel/exit.c:914
 __se_sys_exit_group+0x10/0x10 kernel/exit.c:912
 __x64_sys_exit_group+0x37/0x40 kernel/exit.c:912
 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x443a18
Code: Bad RIP value.
RSP: 002b:00007ffc830da698 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000443a18
RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00000000004c3eb0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 00007ffc830da580 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d6180 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: fffffbfffd0ecb6f
---[ end trace cbb09b62a3880c7d ]---
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:91 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:108 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:183 [inline]
RIP: 0010:check_memory_region+0x80/0x2f0 mm/kasan/generic.c:192
Code: 01 00 00 00 00 fc ff df 4d 01 ea 4d 89 d6 4d 29 ce 49 83 fe 10 7f 2d 4d 85 f6 0f 84 ab 01 00 00 4c 89 cb 4c 29 d3 0f 1f 40 00 <45> 0f b6 19 45 84 db 0f 85 f3 01 00 00 49 ff c1 48 ff c3 75 eb e9
RSP: 0018:ffffc90000ec7a20 EFLAGS: 00010287
RAX: 97d3653d8b240001 RBX: ffffffffffffffff RCX: ffffffff81e02447
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffe8765b7b
RBP: ffffffffe8765a6b R08: dffffc0000000000 R09: fffffbfffd0ecb6f
R10: fffffbfffd0ecb70 R11: 0000000000000000 R12: 1ffffffffd0ecb6f
R13: dffffc0000000001 R14: 0000000000000001 R15: ffffffffe8765b7b
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfffd0ecb6f CR3: 000000000968d000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400