I moved the prandom_u32_max() call in kfence_guarded_alloc() out from under raw spinlock to shut this one up. [ 1.128544] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46 [ 1.128546] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 90, name: kworker/u16:3 [ 1.128547] preempt_count: 1, expected: 0 [ 1.128548] RCU nest depth: 1, expected: 1 [ 1.128549] CPU: 3 PID: 90 Comm: kworker/u16:3 Tainted: G W 5.19.0.g0639b59-master-rt #2 55e5fbd63d8381661776ddec390c2b764f305c0b [ 1.128551] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013 [ 1.128552] Workqueue: events_unbound async_run_entry_fn [ 1.128556] Call Trace: [ 1.128557] <TASK> [ 1.128558] dump_stack_lvl+0x44/0x58 [ 1.128562] __might_resched+0x141/0x160 [ 1.128566] rt_spin_lock+0x2d/0x70 [ 1.128569] get_random_u32+0x45/0x100 [ 1.128572] ? stack_trace_save+0x4b/0x70 [ 1.128575] __kfence_alloc+0x3f4/0x6c0 [ 1.128579] ? __kfence_alloc+0xa8/0x6c0 [ 1.128581] ? kmem_cache_alloc_lru+0x1d8/0x220 [ 1.128582] ? xas_alloc+0x9b/0xc0 [ 1.128585] ? xas_create+0x20c/0x390 [ 1.128586] ? xas_store+0x52/0x5a0 [ 1.128587] ? __filemap_add_folio+0x189/0x5a0 [ 1.128590] ? filemap_add_folio+0x38/0xa0 [ 1.128591] ? __filemap_get_folio+0x1b0/0x580 [ 1.128592] ? pagecache_get_page+0x13/0x80 [ 1.128595] ? simple_write_begin+0x20/0x2d0 [ 1.128597] ? generic_perform_write+0xae/0x1e0 [ 1.128599] ? __generic_file_write_iter+0x141/0x180 [ 1.128600] ? generic_file_write_iter+0x5d/0xb0 [ 1.128601] ? __kernel_write+0x139/0x2f0 [ 1.128604] ? kernel_write+0x56/0x1a0 [ 1.128606] ? xwrite.constprop.8+0x35/0x8e [ 1.128609] ? do_copy+0xee/0x13a [ 1.128610] ? write_buffer+0x27/0x37 [ 1.128612] ? flush_buffer+0x34/0x8b [ 1.128614] ? unxz+0x1b8/0x301 [ 1.128616] ? unpack_to_rootfs+0x17f/0x2ae [ 1.128617] ? do_populate_rootfs+0x59/0x108 [ 1.128619] ? async_run_entry_fn+0x2b/0x110 [ 1.128620] ? process_one_work+0x21f/0x4a0 [ 1.128622] ? worker_thread+0x39/0x3d0 [ 1.128624] ? kthread+0x13e/0x160 [ 1.128625] ? ret_from_fork+0x1f/0x30 [ 1.128628] ? get_random_u32+0xbb/0x100 [ 1.128629] ? new_slab+0x288/0x4e0 [ 1.128631] ? rt_spin_unlock+0x13/0x40 [ 1.128633] ? ___slab_alloc+0x31a/0x660 [ 1.128635] ? xas_alloc+0x9b/0xc0 [ 1.128637] ? rt_spin_unlock+0x13/0x40 [ 1.128638] ? ___slab_alloc+0x31a/0x660 [ 1.128640] ? __d_alloc+0x29/0x1f0 [ 1.128642] ? ___slab_alloc+0x31a/0x660 [ 1.128644] ? slab_pre_alloc_hook.constprop.85+0x37/0x1c0 [ 1.128646] ? xas_alloc+0x9b/0xc0 [ 1.128647] kmem_cache_alloc_lru+0x1d8/0x220 [ 1.128649] xas_alloc+0x9b/0xc0 [ 1.128651] xas_create+0x20c/0x390 [ 1.128653] xas_store+0x52/0x5a0 [ 1.128654] ? xas_load+0x37/0x40 [ 1.128654] ? xa_get_order+0x9a/0xf0 [ 1.128655] __filemap_add_folio+0x189/0x5a0 [ 1.128657] ? scan_shadow_nodes+0x30/0x30 [ 1.128660] filemap_add_folio+0x38/0xa0 [ 1.128661] __filemap_get_folio+0x1b0/0x580 [ 1.128662] ? mntput_no_expire+0x4a/0x230 [ 1.128665] pagecache_get_page+0x13/0x80 [ 1.128667] simple_write_begin+0x20/0x2d0 [ 1.128669] generic_perform_write+0xae/0x1e0 [ 1.128671] __generic_file_write_iter+0x141/0x180 [ 1.128672] generic_file_write_iter+0x5d/0xb0 [ 1.128674] __kernel_write+0x139/0x2f0 [ 1.128676] kernel_write+0x56/0x1a0 [ 1.128678] xwrite.constprop.8+0x35/0x8e [ 1.128680] ? initrd_load+0x3f/0x3f [ 1.128682] do_copy+0xee/0x13a [ 1.128684] ? write_buffer+0x27/0x37 [ 1.128685] write_buffer+0x27/0x37 [ 1.128687] flush_buffer+0x34/0x8b [ 1.128689] ? write_buffer+0x37/0x37 [ 1.128690] unxz+0x1b8/0x301 [ 1.128692] ? initrd_load+0x3f/0x3f [ 1.128693] ? unlzo+0x3cc/0x3cc [ 1.128695] unpack_to_rootfs+0x17f/0x2ae [ 1.128696] ? initrd_load+0x3f/0x3f [ 1.128698] do_populate_rootfs+0x59/0x108 [ 1.128700] async_run_entry_fn+0x2b/0x110 [ 1.128701] process_one_work+0x21f/0x4a0 [ 1.128703] worker_thread+0x39/0x3d0 [ 1.128704] ? process_one_work+0x4a0/0x4a0 [ 1.128706] kthread+0x13e/0x160 [ 1.128707] ? kthread_complete_and_exit+0x20/0x20 [ 1.128709] ret_from_fork+0x1f/0x30 [ 1.128711] </TASK>
