Hello, Since v5.13.2 I'm seeing following warnings every few minutes in dmesg. This wasn't happening in v5.13.1 and earlier kernels. Have you seen that already? ---->8<--- BUG: sleeping function called from invalid context at include/linux/pagemap.h:668 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 736698, name: cron INFO: lockdep is turned off. Preemption disabled at: [<0000000000000000>] 0x0 CPU: 3 PID: 736698 Comm: cron Tainted: G W O 5.13.4+ #442 Hardware name: System manufacturer System Product Name/P8Z68-V PRO, BIOS 3603 11/09/2012 Call Trace: dump_stack+0x7f/0xad ___might_sleep.cold+0xf2/0x106 do_swap_page+0xdd/0x8d0 __handle_mm_fault+0x9d4/0x1330 ? lock_acquire+0x19a/0x300 handle_mm_fault+0x9b/0x230 do_user_addr_fault+0x1e2/0x580 ? exit_to_user_mode_prepare+0x31/0x210 exc_page_fault+0x67/0x240 ? asm_exc_page_fault+0x5/0x20 asm_exc_page_fault+0x1b/0x20 RIP: 0033:0x55a22ddf18fb Code: 81 ec 08 19 00 00 4c 8b 25 ba 7c 00 00 64 48 8b 04 25 28 00 00 00 48 89 84 24 f8 18 00 00 31 c0 41 0f b6 2c 24 40 84 ed 74 3c <e8> 30 cf ff ff 49 89 c7 0f 1f 44 00 00 49 8b 07 4c 0f be ed 42 f6 RSP: 002b:00007ffdcd82e400 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 000055a22f5fcaf0 RCX: 000055a22f5e3010 RDX: 000000000000001c RSI: 000055a22f5fcab0 RDI: 000055a22f5fcaf0 RBP: 0000000000000063 R08: 000055a22f5fc3e0 R09: 00007f4a6d4ae1a0 R10: fffffffffffff856 R11: 0000000000000202 R12: 00007ffdcd831f31 R13: 0000000000000000 R14: 000055a22f5fcab0 R15: 0000000000000000 ---->8<--- BUG: sleeping function called from invalid context at mm/page_alloc.c:4992 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 743677, name: ThreadPoolForeg INFO: lockdep is turned off. Preemption disabled at: [<0000000000000000>] 0x0 CPU: 3 PID: 743677 Comm: ThreadPoolForeg Tainted: G W O 5.13.4+ #442 Hardware name: System manufacturer System Product Name/P8Z68-V PRO, BIOS 3603 11/09/2012 Call Trace: dump_stack+0x7f/0xad ___might_sleep.cold+0xf2/0x106 prepare_alloc_pages+0xfc/0x130 __alloc_pages+0x98/0x2b0 alloc_pages_vma+0x78/0x250 __read_swap_cache_async+0xb9/0x2a0 swapin_readahead+0x253/0x3f0 ? lock_release+0x21b/0x460 do_swap_page+0x26c/0x8d0 __handle_mm_fault+0x9d4/0x1330 ? lock_acquire+0x19a/0x300 handle_mm_fault+0x9b/0x230 do_user_addr_fault+0x1e2/0x580 exc_page_fault+0x67/0x240 ? asm_exc_page_fault+0x5/0x20 asm_exc_page_fault+0x1b/0x20 RIP: 0033:0x7f992e799c8c Code: 08 48 85 ff 75 3b 4c 8b 78 08 49 8b 7f 10 49 8b 47 18 48 29 f8 48 83 f8 1f 0f 86 89 00 00 00 48 8d 47 20 49 89 47 10 0f 57 c0 <0f> 11 07 48 c7 47 10 00 00 00 00 4c 89 7f 18 48 89 7b 08 4c 8b 6d RSP: 002b:00007f98fcff6770 EFLAGS: 00010212 RAX: 00007f98e02bc038 RBX: 00007f98e0269ec8 RCX: 0000000000000131 RDX: 00007f98e02b3050 RSI: 00007f98e0269f20 RDI: 00007f98e02bc018 RBP: 00007f98fcff67e0 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 00007f98fcff6848 R14: 00007f98e0269ef8 R15: 0000000006440910 ---->8<--- Best Regards Michał Mirosław
