------------[ cut here ]------------ WARNING: CPU: 1 PID: 429 at kernel/workqueue.c:2257 current_wq_worker kernel/workqueue_internal.h:69 [inline] WARNING: CPU: 1 PID: 429 at kernel/workqueue.c:2257 is_chained_work kernel/workqueue.c:2199 [inline] WARNING: CPU: 1 PID: 429 at kernel/workqueue.c:2257 __queue_work+0xe50/0x1308 kernel/workqueue.c:2256 Modules linked in: CPU: 1 UID: 0 PID: 429 Comm: kworker/u8:5 Not tainted 6.13.0-rc2-syzkaller-g2e7aff49b5da #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: ipv6_addrconf addrconf_dad_work pstate: 404000c5 (nZcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __queue_work+0xe50/0x1308 kernel/workqueue_internal.h:69 lr : current_wq_worker kernel/workqueue_internal.h:69 [inline] lr : is_chained_work kernel/workqueue.c:2199 [inline] lr : __queue_work+0xe50/0x1308 kernel/workqueue.c:2256 sp : ffff800080017b40 x29: ffff800080017b90 x28: dfff800000000000 x27: ffff700010002f88 x26: dfff800000000000 x25: ffff0000d89f2000 x24: 0000000000000008 x23: 1fffe00018d79001 x22: ffff0000d89f21c0 x21: 0000000000000100 x20: ffff0000c6bc8000 x19: ffff0000c2c70930 x18: 1fffe000366c5e7e x17: ffff800123d64000 x16: ffff80008326d65c x15: 0000000000000002 x14: 1ffff00011f300ca x13: dfff800000000000 x12: 000000007d7c85af x11: 00000000affa6dcb x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c6bc8000 x7 : ffff8000805819c0 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008df6a320 x2 : ffff0000c2c70930 x1 : 0000000000000100 x0 : 0000000000000000 Call trace: current_wq_worker kernel/workqueue_internal.h:69 [inline] (P) is_chained_work kernel/workqueue.c:2199 [inline] (P) __queue_work+0xe50/0x1308 kernel/workqueue.c:2256 (P) current_wq_worker kernel/workqueue_internal.h:69 [inline] (L) is_chained_work kernel/workqueue.c:2199 [inline] (L) __queue_work+0xe50/0x1308 kernel/workqueue.c:2256 (L) delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2485 call_timer_fn+0x1b4/0x8b8 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1839 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x59c/0x7b4 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2449 handle_softirqs+0x320/0xd34 kernel/softirq.c:554 __do_softirq+0x14/0x20 kernel/softirq.c:588 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0x1d8/0x544 kernel/softirq.c:655 irq_exit_rcu+0x14/0x84 kernel/softirq.c:671 __el1_irq arch/arm64/kernel/entry-common.c:561 [inline] el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:575 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:580 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] (L) _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 (L) spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] free_pcppages_bulk+0x5fc/0x62c mm/page_alloc.c:1225 free_unref_page_commit+0x4dc/0xe50 mm/page_alloc.c:2632 free_unref_page+0x770/0xff4 mm/page_alloc.c:2680 __free_pages+0x18c/0x1a4 mm/page_alloc.c:4838 __free_slab+0x11c/0x1f4 mm/slub.c:2644 free_slab+0x2c/0x100 mm/slub.c:2667 discard_slab mm/slub.c:2673 [inline] __put_partials+0x1a8/0x250 mm/slub.c:3142 put_cpu_partial+0x164/0x1c0 mm/slub.c:3217 __slab_free+0x1a8/0x278 mm/slub.c:4468 do_slab_free mm/slub.c:4550 [inline] ___cache_free+0x144/0x16c mm/slub.c:4656 qlink_free+0x48/0x94 mm/kasan/quarantine.c:163 qlist_free_all+0x44/0xb8 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x118/0x124 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x2c/0x8c mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4104 [inline] slab_alloc_node mm/slub.c:4153 [inline] kmem_cache_alloc_node_noprof+0x264/0x420 mm/slub.c:4205 __alloc_skb+0x1e0/0x420 net/core/skbuff.c:668 alloc_skb include/linux/skbuff.h:1323 [inline] alloc_skb_with_frags+0xc8/0x644 net/core/skbuff.c:6612 sock_alloc_send_pskb+0x76c/0x884 net/core/sock.c:2881 sock_alloc_send_skb include/net/sock.h:1797 [inline] mld_newpack+0x180/0x8cc net/ipv6/mcast.c:1747 add_grhead net/ipv6/mcast.c:1850 [inline] add_grec+0x1184/0x1564 net/ipv6/mcast.c:1988 mld_send_initial_cr+0x238/0x4b4 net/ipv6/mcast.c:2234 ipv6_mc_dad_complete+0x78/0x460 net/ipv6/mcast.c:2245 addrconf_dad_completed+0x5f0/0xb9c net/ipv6/addrconf.c:4361 addrconf_dad_work+0xaec/0x1350 process_one_work+0x7a8/0x15cc kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3391 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 irq event stamp: 307265 hardirqs last enabled at (307264): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (307264): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (307265): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (307265): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (305028): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (305028): [] handle_softirqs+0xb44/0xd34 kernel/softirq.c:582 softirqs last disabled at (307257): [] __do_softirq+0x14/0x20 kernel/softirq.c:588 ---[ end trace 0000000000000000 ]---