------------[ cut here ]------------
WARNING: CPU: 1 PID: 3752 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 1 PID: 3752 Comm: kworker/u4:7 Not tainted 5.15.168-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound linkwatch_event
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 fb c7 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e4 c7 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000dd0968 EFLAGS: 00010246
RAX: ffffffff81aaab4c RBX: 0000000000000000 RCX: ffff8880290a3b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aaaa5d R09: fffffbfff20ec621
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffa3000000
R13: 0000000000000008 R14: ffffffffa3000000 R15: ffffc90000dd09c8
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 0000000066bec000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline]
 bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
 bpf_prog_b01026b2908340f4+0x3d/0x554
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run2+0x19e/0x340 kernel/trace/bpf_trace.c:1917
 __bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x22f/0x270 mm/slub.c:4549
 sctp_addr_wq_timeout_handler+0x2de/0x460 net/sctp/protocol.c:681
 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:mod_delayed_work_on+0x1cf/0x250 kernel/workqueue.c:1758
Code: 00 00 00 e8 d3 95 2d 00 4c 8b 3c 24 4d 85 e4 48 bb 00 00 00 00 00 fc ff df 75 07 e8 bb 95 2d 00 eb 06 e8 b4 95 2d 00 fb 31 ff <44> 89 f6 e8 09 99 2d 00 45 85 f6 0f 95 c0 48 c7 44 24 20 0e 36 e0
RSP: 0018:ffffc900031771e0 EFLAGS: 00000246
RAX: ffffffff8152dd7c RBX: dffffc0000000000 RCX: ffff8880290a3b80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900031772c0 R08: ffffffff8152dd4f R09: fffffbfff20ec622
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000200
R13: 0000000000000046 R14: 0000000000000000 R15: 1ffff9200062ee40
 mod_delayed_work include/linux/workqueue.h:542 [inline]
 addrconf_mod_dad_work+0x7c/0x120 net/ipv6/addrconf.c:336
 addrconf_dad_start net/ipv6/addrconf.c:4095 [inline]
 addrconf_add_linklocal+0x65d/0xa30 net/ipv6/addrconf.c:3246
 addrconf_addr_gen+0x851/0xc00
 addrconf_dev_config net/ipv6/addrconf.c:3418 [inline]
 addrconf_init_auto_addrs+0x930/0xe90 net/ipv6/addrconf.c:3496
 addrconf_notify+0xa90/0xf30 net/ipv6/addrconf.c:3665
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
 call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
 netdev_state_change+0x1a3/0x250 net/core/dev.c:1409
 linkwatch_do_dev+0x10c/0x160 net/core/link_watch.c:167
 __linkwatch_run_queue+0x4ca/0x7f0 net/core/link_watch.c:213
 linkwatch_event+0x48/0x50 net/core/link_watch.c:252
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 process_scheduled_works kernel/workqueue.c:2373 [inline]
 worker_thread+0xdcf/0x1280 kernel/workqueue.c:2459
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 e8                	add    %ch,%al
   4:	d3 95 2d 00 4c 8b    	rcll   %cl,-0x74b3ffd3(%rbp)
   a:	3c 24                	cmp    $0x24,%al
   c:	4d 85 e4             	test   %r12,%r12
   f:	48 bb 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbx
  16:	fc ff df
  19:	75 07                	jne    0x22
  1b:	e8 bb 95 2d 00       	call   0x2d95db
  20:	eb 06                	jmp    0x28
  22:	e8 b4 95 2d 00       	call   0x2d95db
  27:	fb                   	sti
  28:	31 ff                	xor    %edi,%edi
* 2a:	44 89 f6             	mov    %r14d,%esi <-- trapping instruction
  2d:	e8 09 99 2d 00       	call   0x2d993b
  32:	45 85 f6             	test   %r14d,%r14d
  35:	0f 95 c0             	setne  %al
  38:	48                   	rex.W
  39:	c7                   	.byte 0xc7
  3a:	44 24 20             	rex.R and $0x20,%al
  3d:	0e                   	(bad)
  3e:	36                   	ss
  3f:	e0                   	.byte 0xe0