overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:321
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 9781, name: syz.5.1049
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
4 locks held by syz.5.1049/9781:
 #0: ffff88807851ab78 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x2a2/0x370 fs/file.c:1213
 #1: ffff888061b15de8 (&ovl_i_mutex_dir_key[depth]){++++}-{4:4}, at: wrap_directory_iterator+0x54/0xe0 fs/readdir.c:54
 #2: ffff88804a260148 (&type->i_mutex_dir_key#10){.+.+}-{4:4}, at: iterate_dir+0x18b/0xb40 fs/readdir.c:101
 #3: ffffffff8e3c1580 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #3: ffffffff8e3c1580 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #3: ffffffff8e3c1580 (rcu_read_lock){....}-{1:3}, at: afs_dynroot_readdir+0x619/0xf50 fs/afs/dynroot.c:351
CPU: 0 UID: 0 PID: 9781 Comm: syz.5.1049 Not tainted 6.14.0-syzkaller-12966-ga2cc6ff5ec8f #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120
 __might_resched+0x3c0/0x5e0 kernel/sched/core.c:8818
 might_alloc include/linux/sched/mm.h:321 [inline]
 might_alloc include/linux/sched/mm.h:316 [inline]
 slab_pre_alloc_hook mm/slub.c:4102 [inline]
 slab_alloc_node mm/slub.c:4180 [inline]
 __do_kmalloc_node mm/slub.c:4330 [inline]
 __kmalloc_noprof+0x386/0x510 mm/slub.c:4343
 kmalloc_noprof include/linux/slab.h:909 [inline]
 ovl_cache_entry_new+0x3d/0x730 fs/overlayfs/readdir.c:152
 ovl_fill_lowest fs/overlayfs/readdir.c:211 [inline]
 ovl_fill_merge+0x2c1/0xa90 fs/overlayfs/readdir.c:268
 dir_emit include/linux/fs.h:3861 [inline]
 afs_dynroot_readdir_cells fs/afs/dynroot.c:310 [inline]
 afs_dynroot_readdir+0x9bb/0xf50 fs/afs/dynroot.c:352
 iterate_dir+0x293/0xb40 fs/readdir.c:108
 ovl_dir_read fs/overlayfs/readdir.c:313 [inline]
 ovl_dir_read_merged+0x3ef/0x5d0 fs/overlayfs/readdir.c:379
 ovl_cache_get fs/overlayfs/readdir.c:422 [inline]
 ovl_iterate+0x86c/0xe40 fs/overlayfs/readdir.c:783
 wrap_directory_iterator+0x9f/0xe0 fs/readdir.c:65
 iterate_dir+0x293/0xb40 fs/readdir.c:108
 __do_sys_getdents fs/readdir.c:322 [inline]
 __se_sys_getdents fs/readdir.c:308 [inline]
 __x64_sys_getdents+0x14d/0x2c0 fs/readdir.c:308
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fce9db8d169
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:00007fce9ea7a038 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007fce9dda6080 RCX: 00007fce9db8d169
RDX: 0000000000000058 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007fce9dc0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fce9dda6080 R15: 00007fffbdf79128
 </TASK>