Dev loop4: unable to read RDB block 1 loop4: unable to read partition table ------------[ cut here ]------------ ODEBUG: free active (active state 1) object type: rcu_head hint: (null) WARNING: CPU: 1 PID: 1713 at lib/debugobjects.c:325 debug_print_object+0x168/0x250 lib/debugobjects.c:325 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 1713 Comm: blkid Not tainted 4.19.75 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x263/0x507 kernel/panic.c:185 __warn.cold+0x20/0x4a kernel/panic.c:540 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037 RIP: 0010:debug_print_object+0x168/0x250 lib/debugobjects.c:325 Code: dd 20 56 82 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 20 56 82 87 48 c7 c7 60 4b 82 87 e8 d6 04 19 fe <0f> 0b 83 05 cb 83 17 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3 RSP: 0018:ffff888095cdf930 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8155dbd6 RDI: ffffed1012b9bf18 RBP: ffff888095cdf970 R08: ffff8880a1066680 R09: ffffed1015d23ee3 R10: ffffed1015d23ee2 R11: ffff8880ae91f717 R12: 0000000000000001 R13: ffffffff8879f200 R14: 0000000000000000 R15: ffff8880517f3920 __debug_check_no_obj_freed lib/debugobjects.c:785 [inline] debug_check_no_obj_freed+0x29f/0x464 lib/debugobjects.c:817 kmem_cache_free+0x18f/0x260 mm/slab.c:3764 free_task_struct kernel/fork.c:162 [inline] free_task+0xdd/0x120 kernel/fork.c:416 __put_task_struct+0x20f/0x4c0 kernel/fork.c:689 put_task_struct include/linux/sched/task.h:96 [inline] finish_task_switch+0x52b/0x780 kernel/sched/core.c:2710 context_switch kernel/sched/core.c:2829 [inline] __schedule+0x86e/0x1dc0 kernel/sched/core.c:3474 preempt_schedule_irq+0xb5/0x140 kernel/sched/core.c:3701 retint_kernel+0x1b/0x2d RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ea/0x3f0 kernel/locking/lockdep.c:3903 Code: 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 c4 01 00 00 48 83 3d 4a a6 1f 07 00 0f 84 38 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0018:ffff888095cdfca8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff10e48c1 RBX: ffff8880a1066680 RCX: 00000000561eb92b RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff888095cdfcf0 R08: 00000000000018ae R09: 0000000000000001 R10: ffff8880a1066f28 R11: ffffffff89e609f0 R12: ffff88808e819448 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 down_read+0x3b/0xb0 kernel/locking/rwsem.c:24 anon_vma_lock_read include/linux/rmap.h:130 [inline] validate_mm+0xdb/0x620 mm/mmap.c:374 vma_link+0x117/0x180 mm/mmap.c:632 do_brk_flags+0x836/0xa20 mm/mmap.c:2999 __do_sys_brk mm/mmap.c:249 [inline] __se_sys_brk mm/mmap.c:192 [inline] __x64_sys_brk+0x41d/0x6c0 mm/mmap.c:192 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f80f089020a Code: 03 01 00 00 00 0f 1f 00 b8 ff ff ff ff 48 8b 1c 24 48 8b 6c 24 08 4c 8b 64 24 10 48 83 c4 18 c3 48 89 fa b8 0c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 33 48 8b 0d 57 fc 2a 00 48 89 01 31 c9 48 39 RSP: 002b:00007ffd474ffb38 EFLAGS: 00000206 ORIG_RAX: 000000000000000c RAX: ffffffffffffffda RBX: 000000000064d000 RCX: 00007f80f089020a RDX: 000000000066e000 RSI: 0000000000000008 RDI: 000000000066e000 RBP: 0000000000021000 R08: 00007f80f0b41e40 R09: 00007f80f07bcc60 R10: 0000000000091a20 R11: 0000000000000206 R12: 00007f80f0b42ef0 R13: 0000000000000000 R14: 0000000000021000 R15: 0000000000021000 ======================================================