ERROR: (device loop8): remounting filesystem as read-only
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 11368 Comm: syz.8.755 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:metapage_write_folio+0xa7/0xcf0
Code: fe 48 89 5c 24 18 4c 8d 73 18 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 73 9d d2 fe 4d 8b 36 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 5a 9d d2 fe 49 8b 1e 43 c6 44 3c
RSP: 0018:ffffc90007f672e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffea000079fa40 RCX: 0000000000080000
RDX: ffffc90025bcc000 RSI: 0000000000006a09 RDI: 0000000000006a0a
RBP: ffffc90007f673f0 R08: ffffea000079fa77 R09: 1ffffd40000f3f4e
R10: dffffc0000000000 R11: fffff940000f3f4f R12: 1ffff92000fece68
R13: ffffea000079fa40 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f81f72926c0(0000) GS:ffff8882a946c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f81f7270ff8 CR3: 0000000117bec000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 metapage_write_one+0x2c8/0x520
 force_metapage+0x1a7/0x360
 txCommit+0x4bce/0x5410
 diAllocAG+0x1767/0x1db0
 diAlloc+0x1d5/0x1680
 ialloc+0x8c/0x8f0
 jfs_mkdir+0x1e1/0xb00
 vfs_mkdir+0x413/0x630
 filename_mkdirat+0x285/0x510
 __se_sys_mkdirat+0x35/0x150
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f81f639b607
Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f81f7291e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f81f7291ee0 RCX: 00007f81f639b607
RDX: 00000000000001ff RSI: 0000200000000000 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000000
R13: 00007f81f7291ea0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:metapage_write_folio+0xa7/0xcf0
Code: fe 48 89 5c 24 18 4c 8d 73 18 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 73 9d d2 fe 4d 8b 36 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 5a 9d d2 fe 49 8b 1e 43 c6 44 3c
RSP: 0018:ffffc90007f672e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffea000079fa40 RCX: 0000000000080000
RDX: ffffc90025bcc000 RSI: 0000000000006a09 RDI: 0000000000006a0a
RBP: ffffc90007f673f0 R08: ffffea000079fa77 R09: 1ffffd40000f3f4e
R10: dffffc0000000000 R11: fffff940000f3f4f R12: 1ffff92000fece68
R13: ffffea000079fa40 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f81f72926c0(0000) GS:ffff8882a946c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c314a64 CR3: 0000000117bec000 CR4: 00000000000006f0
