ERROR: (device loop0): xtSearch: XT_GETPAGE: xtree page corrupt
ERROR: (device loop0): remounting filesystem as read-only
ERROR: (device loop0): duplicateIXtree: 
============================================
WARNING: possible recursive locking detected
6.13.0-syzkaller-02526-gc4b9570cfb63 #0 Not tainted
--------------------------------------------
syz.0.0/5318 is trying to acquire lock:
ffff888052d38920 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diFree+0x37c/0x2fb0 fs/jfs/jfs_imap.c:889

but task is already holding lock:
ffff888052d38920 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diAlloc+0x1b6/0x1630

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&(imap->im_aglock[index]));
  lock(&(imap->im_aglock[index]));

 *** DEADLOCK ***

 May be due to missing lock nesting notation

5 locks held by syz.0.0/5318:
 #0: ffff888052cf2420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:547
 #1: ffff88804594b390 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:867 [inline]
 #1: ffff88804594b390 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: filename_create+0x260/0x540 fs/namei.c:4080
 #2: ffff888052d38920 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diAlloc+0x1b6/0x1630
 #3: ffff888052d38890 (&imap->im_freelock){+.+.}-{4:4}, at: diNewIAG fs/jfs/jfs_imap.c:2460 [inline]
 #3: ffff888052d38890 (&imap->im_freelock){+.+.}-{4:4}, at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline]
 #3: ffff888052d38890 (&imap->im_freelock){+.+.}-{4:4}, at: diAllocAG+0x4b7/0x1e50 fs/jfs/jfs_imap.c:1669
 #4: ffff88804594a618 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diNewIAG fs/jfs/jfs_imap.c:2477 [inline]
 #4: ffff88804594a618 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline]
 #4: ffff88804594a618 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocAG+0x869/0x1e50 fs/jfs/jfs_imap.c:1669

stack backtrace:
CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted 6.13.0-syzkaller-02526-gc4b9570cfb63 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_deadlock_bug+0x483/0x620 kernel/locking/lockdep.c:3039
 check_deadlock kernel/locking/lockdep.c:3091 [inline]
 validate_chain+0x15e2/0x5920 kernel/locking/lockdep.c:3893
 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 __mutex_lock_common kernel/locking/mutex.c:585 [inline]
 __mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730
 diFree+0x37c/0x2fb0 fs/jfs/jfs_imap.c:889
 jfs_evict_inode+0x32d/0x440 fs/jfs/inode.c:156
 evict+0x4e8/0x9a0 fs/inode.c:796
 diFreeSpecial fs/jfs/jfs_imap.c:552 [inline]
 duplicateIXtree+0x3c6/0x550 fs/jfs/jfs_imap.c:3022
 diNewIAG fs/jfs/jfs_imap.c:2597 [inline]
 diAllocExt fs/jfs/jfs_imap.c:1905 [inline]
 diAllocAG+0x17dc/0x1e50 fs/jfs/jfs_imap.c:1669
 diAlloc+0x1d2/0x1630 fs/jfs/jfs_imap.c:1590
 ialloc+0x8f/0x900 fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x1c5/0xba0 fs/jfs/namei.c:225
 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4311
 do_mkdirat+0x264/0x3a0 fs/namei.c:4334
 __do_sys_mkdirat fs/namei.c:4349 [inline]
 __se_sys_mkdirat fs/namei.c:4347 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4347
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f201c585d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f201d3eb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f201c775fa0 RCX: 00007f201c585d29
RDX: 0000000000000000 RSI: 00000000200005c0 RDI: ffffffffffffff9c
RBP: 00007f201c601b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f201c775fa0 R15: 00007ffd5647d5b8
 </TASK>