INFO: task syz-executor.0:9930 can't die for more than 143 seconds.
task:syz-executor.0  state:R  running task     stack:25136 pid: 9930 ppid:  6565 flags:0x00004006
Call Trace:
 context_switch kernel/sched/core.c:4955 [inline]
 __schedule+0x940/0x26f0 kernel/sched/core.c:6302
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
INFO: task syz-executor.2:9944 can't die for more than 145 seconds.
task:syz-executor.2  state:R  running task     stack:25936 pid: 9944 ppid:  9322 flags:0x00004006
Call Trace:
 context_switch kernel/sched/core.c:4955 [inline]
 __schedule+0x940/0x26f0 kernel/sched/core.c:6302
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6702
INFO: task syz-executor.1:9950 can't die for more than 147 seconds.
task:syz-executor.1  state:R  running task     stack:25408 pid: 9950 ppid:  6568 flags:0x00004006
Call Trace:
 context_switch kernel/sched/core.c:4955 [inline]
 __schedule+0x940/0x26f0 kernel/sched/core.c:6302
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6702
 irqentry_exit+0x31/0x80 kernel/entry/common.c:427
INFO: task syz-executor.3:9954 can't die for more than 150 seconds.
task:syz-executor.3  state:R  running task     stack:26536 pid: 9954 ppid:  6582 flags:0x00004006
Call Trace:
 context_switch kernel/sched/core.c:4955 [inline]
 __schedule+0x940/0x26f0 kernel/sched/core.c:6302
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6702
 irqentry_exit+0x31/0x80 kernel/entry/common.c:427
 spin_unlock include/linux/spinlock.h:408 [inline]
 get_next_corpse net/netfilter/nf_conntrack_core.c:2251 [inline]
 nf_ct_iterate_cleanup+0x144/0x450 net/netfilter/nf_conntrack_core.c:2275

Showing all locks held in the system:
1 lock held by khungtaskd/26:
 #0: ffffffff8b97fbe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446