INFO: task syz.0.16:5413 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.16 state:D stack: 0 pid: 5413 ppid: 4904 flags:0x00000001 Call trace: __switch_to+0x2f4/0x540 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5049 [inline] __schedule+0xdfc/0x1bc4 kernel/sched/core.c:6395 schedule+0x11c/0x1c8 kernel/sched/core.c:6478 rwsem_down_write_slowpath+0xc34/0x145c kernel/locking/rwsem.c:1165 __down_write_common kernel/locking/rwsem.c:1292 [inline] __down_write kernel/locking/rwsem.c:1301 [inline] down_write+0xe8/0x12c kernel/locking/rwsem.c:1552 inode_lock include/linux/fs.h:787 [inline] open_last_lookups fs/namei.c:3537 [inline] path_openat+0x604/0x2718 fs/namei.c:3747 do_filp_open+0x184/0x368 fs/namei.c:3777 do_sys_openat2+0x134/0x3f4 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1282 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz.1.17:5458 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.17 state:D stack: 0 pid: 5458 ppid: 4911 flags:0x00000001 Call trace: __switch_to+0x2f4/0x540 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5049 [inline] __schedule+0xdfc/0x1bc4 kernel/sched/core.c:6395 schedule+0x11c/0x1c8 kernel/sched/core.c:6478 rwsem_down_write_slowpath+0xc34/0x145c kernel/locking/rwsem.c:1165 __down_write_common kernel/locking/rwsem.c:1292 [inline] __down_write kernel/locking/rwsem.c:1301 [inline] down_write+0xe8/0x12c kernel/locking/rwsem.c:1552 inode_lock include/linux/fs.h:787 [inline] open_last_lookups fs/namei.c:3537 [inline] path_openat+0x604/0x2718 fs/namei.c:3747 do_filp_open+0x184/0x368 fs/namei.c:3777 do_sys_openat2+0x134/0x3f4 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1282 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz.2.18:5462 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.18 state:D stack: 0 pid: 5462 ppid: 4913 flags:0x00000001 Call trace: __switch_to+0x2f4/0x540 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5049 [inline] __schedule+0xdfc/0x1bc4 kernel/sched/core.c:6395 schedule+0x11c/0x1c8 kernel/sched/core.c:6478 rwsem_down_write_slowpath+0xc34/0x145c kernel/locking/rwsem.c:1165 __down_write_common kernel/locking/rwsem.c:1292 [inline] __down_write kernel/locking/rwsem.c:1301 [inline] down_write+0xe8/0x12c kernel/locking/rwsem.c:1552 inode_lock include/linux/fs.h:787 [inline] open_last_lookups fs/namei.c:3537 [inline] path_openat+0x604/0x2718 fs/namei.c:3747 do_filp_open+0x184/0x368 fs/namei.c:3777 do_sys_openat2+0x134/0x3f4 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1282 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz.3.19:5463 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.19 state:D stack: 0 pid: 5463 ppid: 4922 flags:0x00000001 Call trace: __switch_to+0x2f4/0x540 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5049 [inline] __schedule+0xdfc/0x1bc4 kernel/sched/core.c:6395 schedule+0x11c/0x1c8 kernel/sched/core.c:6478 rwsem_down_write_slowpath+0xc34/0x145c kernel/locking/rwsem.c:1165 __down_write_common kernel/locking/rwsem.c:1292 [inline] __down_write kernel/locking/rwsem.c:1301 [inline] down_write+0xe8/0x12c kernel/locking/rwsem.c:1552 inode_lock include/linux/fs.h:787 [inline] open_last_lookups fs/namei.c:3537 [inline] path_openat+0x604/0x2718 fs/namei.c:3747 do_filp_open+0x184/0x368 fs/namei.c:3777 do_sys_openat2+0x134/0x3f4 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1282 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz.4.20:5475 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.20 state:D stack: 0 pid: 5475 ppid: 4915 flags:0x00000001 Call trace: __switch_to+0x2f4/0x540 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5049 [inline] __schedule+0xdfc/0x1bc4 kernel/sched/core.c:6395 schedule+0x11c/0x1c8 kernel/sched/core.c:6478 rwsem_down_write_slowpath+0xc34/0x145c kernel/locking/rwsem.c:1165 __down_write_common kernel/locking/rwsem.c:1292 [inline] __down_write kernel/locking/rwsem.c:1301 [inline] down_write+0xe8/0x12c kernel/locking/rwsem.c:1552 inode_lock include/linux/fs.h:787 [inline] open_last_lookups fs/namei.c:3537 [inline] path_openat+0x604/0x2718 fs/namei.c:3747 do_filp_open+0x184/0x368 fs/namei.c:3777 do_sys_openat2+0x134/0x3f4 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1282 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Showing all locks held in the system: 2 locks held by kworker/0:1/13: #0: ffff0000c0021938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x678/0x1138 kernel/workqueue.c:2283 #1: ffff80001b447c00 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1138 kernel/workqueue.c:2285 1 lock held by khungtaskd/27: #0: ffff800014471360 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:312 5 locks held by kworker/u4:4/560: #0: ffff0000c038c138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x678/0x1138 kernel/workqueue.c:2283 #1: ffff80001f9e7c00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1138 kernel/workqueue.c:2285 #2: ffff8000163becd0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0xaa4 net/core/net_namespace.c:589 #3: ffff0000cd4513e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x114/0x2d0 drivers/net/wireguard/device.c:233 #4: ffff800014475e28 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #4: ffff800014475e28 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x344/0x670 kernel/rcu/tree_exp.h:845 3 locks held by kworker/1:2/1540: #0: ffff0000d32fb138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x678/0x1138 kernel/workqueue.c:2283 #1: ffff800023847c00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1138 kernel/workqueue.c:2285 #2: ffff8000163ca828 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 2 locks held by udevd/3660: 2 locks held by getty/3803: #0: ffff0000d4f98098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001b9032e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c drivers/tty/n_tty.c:2158 3 locks held by kworker/0:12/4134: #0: ffff0000d32fb138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x678/0x1138 kernel/workqueue.c:2283 #1: ffff80001f6f7c00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1138 kernel/workqueue.c:2285 #2: ffff8000163ca828 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 3 locks held by kworker/1:14/4210: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x678/0x1138 kernel/workqueue.c:2283 #1: ffff80001f827c00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1138 kernel/workqueue.c:2285 #2: ffff0000c999b240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1dc/0x27f0 drivers/net/netdevsim/fib.c:1480 2 locks held by syz.0.16/5407: 1 lock held by syz.0.16/5413: #0: ffff0000ef668188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #0: ffff0000ef668188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3537 [inline] #0: ffff0000ef668188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x604/0x2718 fs/namei.c:3747 1 lock held by syz.1.17/5450: 1 lock held by syz.1.17/5458: #0: ffff0000f4ad0188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #0: ffff0000f4ad0188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3537 [inline] #0: ffff0000f4ad0188 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x604/0x2718 fs/namei.c:3747 2 locks held by syz.2.18/5456: 1 lock held by syz.2.18/5462: #0: ffff0000ef6686d0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #0: ffff0000ef6686d0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3537 [inline] #0: ffff0000ef6686d0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x604/0x2718 fs/namei.c:3747 1 lock held by syz.3.19/5459: 1 lock held by syz.3.19/5463: #0: ffff0000ef668c18 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #0: ffff0000ef668c18 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3537 [inline] #0: ffff0000ef668c18 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x604/0x2718 fs/namei.c:3747 1 lock held by syz.4.20/5470: 1 lock held by syz.4.20/5475: #0: ffff0000f4ad06d0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #0: ffff0000f4ad06d0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3537 [inline] #0: ffff0000f4ad06d0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x604/0x2718 fs/namei.c:3747 1 lock held by syz.5.21/5639: 1 lock held by syz.5.21/5640: #0: ffff0000ef669160 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #0: ffff0000ef669160 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3537 [inline] #0: ffff0000ef669160 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x604/0x2718 fs/namei.c:3747 1 lock held by syz.6.22/5683: 1 lock held by syz.6.22/5684: #0: ffff0000f4ad0c18 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #0: ffff0000f4ad0c18 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3537 [inline] #0: ffff0000f4ad0c18 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x604/0x2718 fs/namei.c:3747 1 lock held by syz.7.23/5686: 1 lock held by syz.7.23/5687: #0: ffff0000ef6696a8 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #0: ffff0000ef6696a8 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3537 [inline] #0: ffff0000ef6696a8 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x604/0x2718 fs/namei.c:3747 1 lock held by syz.9.25/5689: 1 lock held by syz.9.25/5692: #0: ffff0000ef669bf0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #0: ffff0000ef669bf0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3537 [inline] #0: ffff0000ef669bf0 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x604/0x2718 fs/namei.c:3747 1 lock held by syz.8.24/5691: 1 lock held by syz.8.24/5693: #0: ffff0000f4ad1160 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #0: ffff0000f4ad1160 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3537 [inline] #0: ffff0000f4ad1160 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x604/0x2718 fs/namei.c:3747 2 locks held by syz-executor/5711: #0: ffff0000f2184ff0 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x60/0xfe4 net/bluetooth/hci_core.c:1737 #1: ffff0000f2184078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_do_close+0x334/0xfe4 net/bluetooth/hci_core.c:1782 2 locks held by syz-executor/12284: #0: ffff8000163ca828 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffff8000163ca828 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6d0/0xd70 net/core/rtnetlink.c:5681 #1: ffff800014475e28 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #1: ffff800014475e28 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x29c/0x670 kernel/rcu/tree_exp.h:845 =============================================