INFO: task syz-executor.3:4228 blocked for more than 143 seconds. Not tainted 6.1.90-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27272 pid:4228 ppid:3594 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 d_wait_lookup fs/dcache.c:2626 [inline] d_alloc_parallel+0xbd5/0x1590 fs/dcache.c:2708 __lookup_slow+0x113/0x3d0 fs/namei.c:1675 lookup_slow+0x53/0x70 fs/namei.c:1707 walk_component fs/namei.c:1998 [inline] link_path_walk+0x9d6/0xee0 fs/namei.c:2325 path_openat+0x23d/0x2e60 fs/namei.c:3781 do_filp_open+0x230/0x480 fs/namei.c:3812 do_sys_openat2+0x13b/0x500 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1345 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f42eaa7cee9 RSP: 002b:00007f42e95f60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f42eabac050 RCX: 00007f42eaa7cee9 RDX: 0000000000000002 RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007f42eaac949e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f42eabac050 R15: 00007ffddccab088 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8d12ae50 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516 1 lock held by rcu_tasks_trace/13: #0: ffffffff8d12b650 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516 1 lock held by khungtaskd/28: #0: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6494 2 locks held by getty/3308: #0: ffff88814b115098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2188 3 locks held by kworker/u5:1/3588: #0: ffff8880238d3138 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267 #1: ffffc90003e0fd20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267 #2: ffff8880758a10b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1dc/0x400 net/bluetooth/hci_sync.c:308 2 locks held by kworker/1:7/3903: #0: ffff888012472138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267 #1: ffffc90003dcfd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267 2 locks held by syz-executor.3/4223: 1 lock held by syz-executor.3/4228: #0: ffff88805797c188 (&type->i_mutex_dir_key#16){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline] #0: ffff88805797c188 (&type->i_mutex_dir_key#16){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1706 1 lock held by syz-executor.3/4338: #0: ffffffff8d130278 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline] #0: ffffffff8d130278 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x360/0x930 kernel/rcu/tree_exp.h:962 1 lock held by syz-executor.2/4973: 1 lock held by syz-executor.2/4975: #0: ffff88802999c188 (&type->i_mutex_dir_key#16){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline] #0: ffff88802999c188 (&type->i_mutex_dir_key#16){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1706 1 lock held by syz-executor.0/5089: 1 lock held by syz-executor.0/5094: #0: ffff88802999c6d0 (&type->i_mutex_dir_key#16){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline] #0: ffff88802999c6d0 (&type->i_mutex_dir_key#16){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1706 3 locks held by kworker/u4:13/5345: #0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267 #1: ffffc90003597d20 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267 #2: ffffffff8d130278 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #2: ffffffff8d130278 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4f0/0x930 kernel/rcu/tree_exp.h:962 1 lock held by syz-executor.2/5455: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1b0/0x3f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xf88/0xfd0 kernel/hung_task.c:377 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3903 Comm: kworker/1:7 Not tainted 6.1.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: events kfree_rcu_work RIP: 0010:__lock_is_held kernel/locking/lockdep.c:5403 [inline] RIP: 0010:lock_is_held_type+0x9f/0x180 kernel/locking/lockdep.c:5705 Code: 00 65 ff 05 d3 bd 77 75 41 83 bd d8 0a 00 00 00 7e 47 4c 89 ed 48 81 c5 e0 0a 00 00 31 db 48 83 fb 31 73 24 48 89 ef 4c 89 fe 1c 02 00 00 85 c0 75 2a 48 ff c3 49 63 85 d8 0a 00 00 48 83 c5 RSP: 0018:ffffc900001e07e8 EFLAGS: 00000097 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000080000101 RDX: ffff88807d3d1dc0 RSI: ffffffff8d12ac80 RDI: ffff88807d3d28a0 RBP: ffff88807d3d28a0 R08: ffffffff8638bf7e R09: ffffed100ad922b8 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000246 R13: ffff88807d3d1dc0 R14: 00000000ffffffff R15: ffffffff8d12ac80 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fde27f78198 CR3: 000000000ce8e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mac80211_hwsim_addr_iter+0x87/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1219 __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x170 net/mac80211/util.c:824 mac80211_hwsim_addr_match drivers/net/wireless/mac80211_hwsim.c:1242 [inline] mac80211_hwsim_tx_frame_no_nl+0x11e1/0x1a70 drivers/net/wireless/mac80211_hwsim.c:1729 mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/mac80211_hwsim.c:2053 mac80211_hwsim_beacon_tx+0x5f8/0xaa0 drivers/net/wireless/mac80211_hwsim.c:2116 __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x170 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xd0/0x1e0 drivers/net/wireless/mac80211_hwsim.c:2142 __run_hrtimer kernel/time/hrtimer.c:1686 [inline] __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1750 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1767 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:kasan_quarantine_put+0x84/0x220 mm/kasan/quarantine.c:245 Code: e8 d1 42 af ff 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 0f 85 83 00 00 00 41 f7 c7 00 02 00 00 74 01 fb 31 c0 <48> 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f c3 48 8d 80 c0 65 03 00 45 RSP: 0018:ffffc90003dcfa80 EFLAGS: 00000206 RAX: f63b715e42029601 RBX: ffff888072ad3500 RCX: ffffffff816acf0a RDX: dffffc0000000000 RSI: ffffffff8aec01c0 RDI: ffffffff8b3d43e0 RBP: ffff888012441780 R08: dffffc0000000000 R09: fffffbfff2093650 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888072ad3900 R13: 0000000000000000 R14: 00000000000a74b0 R15: 0000000000000286 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] kmem_cache_free_bulk+0x4fa/0x750 mm/slub.c:3779 kfree_bulk include/linux/slab.h:468 [inline] kfree_rcu_work+0x343/0x890 kernel/rcu/tree.c:3086 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308