------------[ cut here ]------------
WARNING: CPU: 1 PID: 5122 at kernel/workqueue.c:1441 __queue_work+0xe2d/0xfb0 kernel/workqueue.c:1441
Modules linked in:
CPU: 1 PID: 5122 Comm: syz-executor Not tainted 6.1.139-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:__queue_work+0xe2d/0xfb0 kernel/workqueue.c:1441
Code: e9 9d fc ff ff 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 0f 8c c7 fc ff ff 48 8b 3c 24 e8 ed 2a 7f 00 e9 b9 fc ff ff e8 93 b7 2d 00 <0f> 0b 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 7d b7 2d 00
RSP: 0018:ffffc900001e0ae8 EFLAGS: 00010046
RAX: ffffffff81531f7d RBX: 0000000000010000 RCX: ffff88802a749dc0
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1bfcfb6
R10: fffffbfff1bfcfb6 R11: 1ffffffff1bfcfb5 R12: ffff888074bcc800
R13: ffff888074bcc9c0 R14: 0000000000000008 R15: 0000000000000001
FS:  000055558da9c500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ecf47a64f0 CR3: 0000000079dc3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x1a0/0x670 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1544 [inline]
 __run_timers+0x550/0x7c0 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:661
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:mod_delayed_work_on+0x157/0x1a0 kernel/workqueue.c:1747
Code: 2d 00 eb 1c e8 8a ac 2d 00 eb 15 e8 83 ac 2d 00 e8 3e f6 bb 08 4d 85 ff 74 e3 e8 74 ac 2d 00 fb 49 bf 00 00 00 00 00 fc ff df <31> ff 89 de e8 c0 af 2d 00 85 db 0f 95 c0 48 c7 44 24 20 0e 36 e0
RSP: 0018:ffffc900032867a0 EFLAGS: 00000293
RAX: ffffffff81532a9c RBX: 0000000000000000 RCX: ffff88802a749dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003286848 R08: dffffc0000000000 R09: fffffbfff211704a
R10: fffffbfff211704a R11: 1ffffffff2117049 R12: 0000000000000000
R13: 0000000000000008 R14: 1ffff92000650cf8 R15: dffffc0000000000
 mod_delayed_work include/linux/workqueue.h:542 [inline]
 addrconf_mod_dad_work+0x76/0x120 net/ipv6/addrconf.c:331
 addrconf_dad_start net/ipv6/addrconf.c:4119 [inline]
 addrconf_add_linklocal+0x4e2/0x6b0 net/ipv6/addrconf.c:3262
 addrconf_addr_gen+0x4f1/0x600 net/ipv6/addrconf.c:3389
 addrconf_init_auto_addrs+0x6e9/0xb00 net/ipv6/addrconf.c:-1
 addrconf_notify+0xaca/0xf40 net/ipv6/addrconf.c:3691
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:455
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers net/core/dev.c:2053 [inline]
 __dev_notify_flags+0x178/0x2d0 net/core/dev.c:-1
 dev_change_flags+0xe3/0x1a0 net/core/dev.c:8702
 do_setlink+0xc31/0x3c40 net/core/rtnetlink.c:2833
 __rtnl_newlink net/core/rtnetlink.c:3608 [inline]
 rtnl_newlink+0x17d6/0x1ff0 net/core/rtnetlink.c:3655
 rtnetlink_rcv_msg+0x79b/0xed0 net/core/rtnetlink.c:6153
 netlink_rcv_skb+0x1de/0x420 net/netlink/af_netlink.c:2493
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x74c/0x8c0 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0x89e/0xbc0 net/netlink/af_netlink.c:1859
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 __sys_sendto+0x44f/0x5c0 net/socket.c:2153
 __do_sys_sendto net/socket.c:2165 [inline]
 __se_sys_sendto net/socket.c:2161 [inline]
 __x64_sys_sendto+0xda/0xf0 net/socket.c:2161
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f43ee9907fc
Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b
RSP: 002b:00007ffc7bb58220 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f43ef6e4620 RCX: 00007f43ee9907fc
RDX: 000000000000002c RSI: 00007f43ef6e4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffc7bb58274 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f43ef6e4670 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	eb 1c                	jmp    0x1e
   2:	e8 8a ac 2d 00       	call   0x2dac91
   7:	eb 15                	jmp    0x1e
   9:	e8 83 ac 2d 00       	call   0x2dac91
   e:	e8 3e f6 bb 08       	call   0x8bbf651
  13:	4d 85 ff             	test   %r15,%r15
  16:	74 e3                	je     0xfffffffb
  18:	e8 74 ac 2d 00       	call   0x2dac91
  1d:	fb                   	sti
  1e:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  25:	fc ff df
* 28:	31 ff                	xor    %edi,%edi <-- trapping instruction
  2a:	89 de                	mov    %ebx,%esi
  2c:	e8 c0 af 2d 00       	call   0x2daff1
  31:	85 db                	test   %ebx,%ebx
  33:	0f 95 c0             	setne  %al
  36:	48                   	rex.W
  37:	c7                   	.byte 0xc7
  38:	44 24 20             	rex.R and $0x20,%al
  3b:	0e                   	(bad)
  3c:	36                   	ss
  3d:	e0                   	.byte 0xe0