INFO: task kworker/u8:7:279 blocked for more than 143 seconds. Not tainted 6.16.0-rc5-syzkaller-gec4801305969 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:7 state:D stack:0 pid:279 tgid:279 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events_power_efficient crda_timeout_work Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:742 (T) context_switch kernel/sched/core.c:5401 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6790 preempt_schedule_irq+0x80/0x188 kernel/sched/core.c:7113 arm64_preempt_schedule_irq+0x44/0x58 arch/arm64/kernel/entry-common.c:305 el1_interrupt+0x3c/0x __el1_irq arch/arm64/kernel/entry-common.c:656 [inline] el1_interrupt+0x3c/0x54 arch/arm64/kernel/entry-common.c:668 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:673 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592 __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) put_cpu_partial+0x154/0x1c0 mm/slub.c:3258 (P) __slab_free+0x1b0/0x280 mm/slub.c:4513 do_slab_free mm/slub.c:4595 [inline] ___cache_free+0x150/0x170 mm/slub.c:4701 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/0x88 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4148 [inline] slab_alloc_node mm/slub.c:4197 [inline] __kmalloc_cache_noprof+0x238/0x3fc mm/slub.c:4354 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] regulatory_hint_core net/wireless/reg.c:3246 [inline] restore_regulatory_settings+0x1664/0x2504 net/wireless/reg.c:3578 crda_timeout_work+0x38/0x68 net/wireless/reg.c:543 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:843 Showing all locks held in the system: 3 locks held by kworker/u8:0/12: #0: ffff0000d11ae948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff800097a87bc0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928b6568 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/1:0/24: 1 lock held by khungtaskd/32: #0: ffff80008f8599c0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/41: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000990e7bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928b6568 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:3/42: 5 locks held by pr/ttyAMA0/43: 2 locks held by kworker/u8:6/217: 4 locks held by kworker/u8:7/279: 3 locks held by kworker/u8:8/318: 2 locks held by kworker/1:2/1821: 3 locks held by kworker/u8:10/2084: 3 locks held by kworker/u8:11/2164: 4 locks held by kworker/0:2/2316: 1 lock held by klogd/6132: 4 locks held by udevd/6143: 3 locks held by dhcpcd/6198: 2 locks held by getty/6295: #0: ffff0000d25040a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba2e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 2 locks held by kworker/1:3/6637: 3 locks held by kworker/0:3/6642: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff80009ff67bc0 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928b6568 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 1 lock held by syz-executor/6650: #0: ffff8000928b6568 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by syz-executor/6651: #0: ffff80009291bdb0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80009291bbc8 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffff80009291bbc8 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffff80009291bbc8 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0xf4/0x624 net/netlink/genetlink.c:1209 #2: ffff8000928b6568 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by syz-executor/6657: #0: ffff80009291bdb0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff8000928b6568 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 1 lock held by syz-executor/6658: #0: ffff8000928b6568 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:12/6822: 3 locks held by kworker/u8:13/6823: 2 locks held by kworker/1:5/6824: 3 locks held by kworker/u8:16/6827: 2 locks held by kworker/u8:17/6828: 3 locks held by syz-executor/6829: 2 locks held by udevd/6832: =============================================