syzbot

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P14356
	(detected by 1, t=10503 jiffies, g=215377, q=141927)
syz-executor.1  R  running task    27032 14356   7180 0x00004006
Call Trace:
 mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:3628
 mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:3628
 __trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline]
 lockdep_hardirqs_on+0x463/0x620 kernel/locking/lockdep.c:3702
 __trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline]
 lockdep_hardirqs_on+0x463/0x620 kernel/locking/lockdep.c:3702
 set_irq_regs arch/x86/include/asm/irq_regs.h:27 [inline]
 smp_apic_timer_interrupt+0x1b6/0x600 arch/x86/kernel/apic/apic.c:1142
 set_irq_regs arch/x86/include/asm/irq_regs.h:27 [inline]
 smp_apic_timer_interrupt+0x1b6/0x600 arch/x86/kernel/apic/apic.c:1142
 __sctp_v6_cmp_addr net/sctp/ipv6.c:591 [inline]
 __sctp_v6_cmp_addr+0x2b1/0x540 net/sctp/ipv6.c:570
 __ipv6_addr_type+0x20d/0x32a net/ipv6/addrconf_core.c:78
 ipv6_addr_equal include/net/ipv6.h:579 [inline]
 __sctp_v6_cmp_addr net/sctp/ipv6.c:591 [inline]
 __sctp_v6_cmp_addr+0x218/0x540 net/sctp/ipv6.c:570
 get_current arch/x86/include/asm/current.h:15 [inline]
 write_comp_data+0x9/0x70 kernel/kcov.c:207
 sctp_bind_addr_state+0x10f/0x1d0 net/sctp/bind_addr.c:404
 sctp_copy_local_addr_list+0x255/0x530 net/sctp/protocol.c:161
 sctp_defaults_init+0xc90/0xc90 net/sctp/protocol.c:1324
 sctp_is_any+0x6f/0x120 net/sctp/bind_addr.c:491
 sctp_copy_one_addr+0x5b/0x170 net/sctp/bind_addr.c:457
 sctp_copy_one_addr+0x5b/0x170 net/sctp/bind_addr.c:457
 sctp_bind_addr_copy+0xfc/0x2ca net/sctp/bind_addr.c:56
 sctp_connect_new_asoc+0x16c/0x580 net/sctp/socket.c:1088
 __sctp_connect+0x430/0xc70 net/sctp/socket.c:1190
 retint_kernel+0x2b/0x2b
 sctp_connect_new_asoc+0x580/0x580 net/sctp/socket.c:1118
 __sanitizer_cov_trace_switch+0x45/0x70 kernel/kcov.c:310
 sctp_connect net/sctp/socket.c:4908 [inline]
 sctp_inet_connect+0x14b/0x1b0 net/sctp/socket.c:4923
 __sctp_connect+0xc70/0xc70 net/sctp/socket.c:1232
 __sys_connect_file+0x155/0x1a0 net/socket.c:1859
 __sys_connect+0x160/0x190 net/socket.c:1876
 __sys_connect_file+0x1a0/0x1a0 net/socket.c:1860
 __do_sys_futex kernel/futex.c:3869 [inline]
 __se_sys_futex kernel/futex.c:3837 [inline]
 __x64_sys_futex+0x380/0x4f0 kernel/futex.c:3837
 __do_sys_clock_gettime kernel/time/posix-timers.c:1094 [inline]
 __se_sys_clock_gettime kernel/time/posix-timers.c:1082 [inline]
 __x64_sys_clock_gettime+0x165/0x240 kernel/time/posix-timers.c:1082
 __ia32_sys_clock_settime+0x260/0x260 kernel/time/posix-timers.c:1410
 trace_hardirqs_off_caller+0x55/0x230 kernel/trace/trace_preemptirq.c:73
 __do_sys_connect net/socket.c:1887 [inline]
 __se_sys_connect net/socket.c:1884 [inline]
 __x64_sys_connect+0x6f/0xb0 net/socket.c:1884
 __trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline]
 lockdep_hardirqs_on+0x463/0x620 kernel/locking/lockdep.c:3702
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3