BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:321 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5830, name: syz-executor412 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 4 locks held by syz-executor412/5830: #0: ffff888033bd42b8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x247/0x310 fs/file.c:1213 #1: ffff888077f28cf8 (&ovl_i_mutex_dir_key[depth]){++++}-{4:4}, at: wrap_directory_iterator+0x5a/0xd0 fs/readdir.c:54 #2: ffff88807b2e0148 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: iterate_dir+0x4a6/0x760 fs/readdir.c:101 #3: ffffffff8eb3a760 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #3: ffffffff8eb3a760 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #3: ffffffff8eb3a760 (rcu_read_lock){....}-{1:3}, at: afs_dynroot_readdir+0x466/0xbe0 fs/afs/dynroot.c:351 CPU: 0 UID: 0 PID: 5830 Comm: syz-executor412 Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 __might_resched+0x558/0x6c0 kernel/sched/core.c:8798 might_alloc include/linux/sched/mm.h:321 [inline] slab_pre_alloc_hook mm/slub.c:4089 [inline] slab_alloc_node mm/slub.c:4167 [inline] __do_kmalloc_node mm/slub.c:4317 [inline] __kmalloc_noprof+0xd0/0x4d0 mm/slub.c:4330 kmalloc_noprof include/linux/slab.h:906 [inline] ovl_cache_entry_new+0x39/0x7b0 fs/overlayfs/readdir.c:152 ovl_cache_entry_add_rb fs/overlayfs/readdir.c:188 [inline] ovl_fill_merge+0x416/0x830 fs/overlayfs/readdir.c:266 dir_emit include/linux/fs.h:3853 [inline] afs_dynroot_readdir_cells fs/afs/dynroot.c:310 [inline] afs_dynroot_readdir+0x814/0xbe0 fs/afs/dynroot.c:352 iterate_dir+0x5a9/0x760 fs/readdir.c:108 ovl_dir_read+0xfe/0x570 fs/overlayfs/readdir.c:313 ovl_dir_read_merged+0x315/0x5e0 fs/overlayfs/readdir.c:369 ovl_cache_get fs/overlayfs/readdir.c:422 [inline] ovl_iterate+0x1196/0x21c0 fs/overlayfs/readdir.c:783 wrap_directory_iterator+0x91/0xd0 fs/readdir.c:65 iterate_dir+0x5a9/0x760 fs/readdir.c:108 __do_sys_getdents fs/readdir.c:322 [inline] __se_sys_getdents+0x1ff/0x4e0 fs/readdir.c:308 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f782667fba9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc840944a8 EFLAGS: 00000246 ORIG_RAX: 000000000000004e RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f782667fba9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00002000000000c0 R08: 00005555798a14c0 R09: 00005555798a14c0 R10: 00005555798a14c0 R11: 0000000000000246 R12: 00007ffc840944d0 R13: 00007ffc840946f8 R14: 431bde82d7b634db R15: 00007f78266c803b