EXT4-fs (loop6): VFS: Can't find ext4 filesystem netlink: 56 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 56 bytes leftover after parsing attributes in process `syz-executor.6'. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 74 at kernel/kthread.c:83 to_kthread kernel/kthread.c:83 [inline] WARNING: CPU: 0 PID: 74 at kernel/kthread.c:83 kthread_is_per_cpu+0xc4/0xf0 kernel/kthread.c:519 Modules linked in: CPU: 0 PID: 74 Comm: jbd2/sda-8 Not tainted 5.10.45 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:to_kthread kernel/kthread.c:83 [inline] RIP: 0010:kthread_is_per_cpu+0xc4/0xf0 kernel/kthread.c:519 Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 2e 4c 8b 23 41 83 e4 01 e8 79 83 23 00 44 89 e0 5b 5d 41 5c c3 e8 6c 83 23 00 <0f> 0b eb 88 e8 73 a1 4e 00 e9 68 ff ff ff e8 79 a1 4e 00 eb 9a 48 RSP: 0018:ffff88800f75f4b8 EFLAGS: 00010093 RAX: 0000000000000000 RBX: ffff888044580000 RCX: ffffffff811c07dc RDX: ffff888008e2b280 RSI: ffffffff811c0854 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff888044580000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880445800a8 R13: ffff88800f75f640 R14: ffff88800f75f640 R15: ffff888044580000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c429000 CR3: 000000004bc7e000 CR4: 0000000000350ef0 Call Trace: can_migrate_task+0x90/0xa00 kernel/sched/fair.c:7566 detach_tasks kernel/sched/fair.c:7714 [inline] load_balance+0xa0e/0x2990 kernel/sched/fair.c:9638 newidle_balance+0x6bc/0xed0 kernel/sched/fair.c:10610 pick_next_task_fair+0x48/0xb10 kernel/sched/fair.c:7153 pick_next_task kernel/sched/core.c:4342 [inline] __schedule+0x327/0x1e70 kernel/sched/core.c:4493 schedule+0xcb/0x270 kernel/sched/core.c:4603 io_schedule+0xb6/0x130 kernel/sched/core.c:6294 bit_wait_io+0x12/0xa0 kernel/sched/wait_bit.c:209 __wait_on_bit+0x59/0x1b0 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0xd5/0x110 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:101 [inline] __wait_on_buffer+0x7c/0x90 fs/buffer.c:122 wait_on_buffer include/linux/buffer_head.h:354 [inline] jbd2_journal_commit_transaction+0x36f2/0x65c0 fs/jbd2/commit.c:858 kjournald2+0x1d1/0x930 fs/jbd2/journal.c:213 kthread+0x38f/0x470 kernel/kthread.c:292 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:296 irq event stamp: 2638368 hardirqs last enabled at (2638367): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (2638367): [] _raw_spin_unlock_irqrestore+0x34/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (2638368): [] __schedule+0xeef/0x1e70 kernel/sched/core.c:4425 softirqs last enabled at (2638332): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (2638135): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace 2e3db96efd4573c0 ]--- ======================================================