INFO: task syz.2.253:7533 blocked for more than 143 seconds. Not tainted 6.12.0-rc1-syzkaller-g80cb3fb61135 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.253 state:D stack:0 pid:7533 tgid:7532 ppid:7076 flags:0x00000001 Call trace: __switch_to+0x428/0x860 arch/arm64/kernel/process.c:697 context_switch kernel/sched/core.c:5315 [inline] __schedule+0x14bc/0x2718 kernel/sched/core.c:6675 __schedule_loop kernel/sched/core.c:6752 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6767 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6824 rwsem_down_write_slowpath+0xd10/0x14c8 kernel/locking/rwsem.c:1176 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1578 __super_lock fs/super.c:56 [inline] super_lock+0x208/0x33c fs/super.c:120 user_get_super+0xe0/0x328 fs/super.c:1000 quotactl_block fs/quota/quota.c:890 [inline] __do_sys_quotactl fs/quota/quota.c:955 [inline] __se_sys_quotactl fs/quota/quota.c:917 [inline] __arm64_sys_quotactl+0x504/0xc9c fs/quota/quota.c:917 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:732 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:750 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz.1.332:7755 blocked for more than 143 seconds. Not tainted 6.12.0-rc1-syzkaller-g80cb3fb61135 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.332 state:D stack:0 pid:7755 tgid:7753 ppid:7096 flags:0x00000001 Call trace: __switch_to+0x428/0x860 arch/arm64/kernel/process.c:697 context_switch kernel/sched/core.c:5315 [inline] __schedule+0x14bc/0x2718 kernel/sched/core.c:6675 __schedule_loop kernel/sched/core.c:6752 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6767 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6824 rwsem_down_read_slowpath+0x534/0x858 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0xa0/0x2fc kernel/locking/rwsem.c:1526 __super_lock fs/super.c:58 [inline] super_lock+0x244/0x33c fs/super.c:120 user_get_super+0xe0/0x328 fs/super.c:1000 quotactl_block fs/quota/quota.c:890 [inline] __do_sys_quotactl fs/quota/quota.c:955 [inline] __se_sys_quotactl fs/quota/quota.c:917 [inline] __arm64_sys_quotactl+0x504/0xc9c fs/quota/quota.c:917 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:732 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:750 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 2 locks held by kworker/u8:1/12: 1 lock held by khungtaskd/31: #0: ffff80008f9cf760 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 3 locks held by kworker/u8:3/44: #0: ffff0000d157b948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff800097fb7c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 7 locks held by kworker/u8:6/552: #0: ffff0000c1891948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff80009c217c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff8000926f3850 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:580 #3: ffff0000cce970e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #3: ffff0000cce970e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline] #3: ffff0000cce970e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x114/0x418 net/devlink/core.c:506 #4: ffff000114e00250 (&devlink->lock_key#19){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline] #4: ffff000114e00250 (&devlink->lock_key#19){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline] #4: ffff000114e00250 (&devlink->lock_key#19){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x124/0x418 net/devlink/core.c:506 #5: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 #6: ffff80008f9d4cb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #6: ffff80008f9d4cb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x354/0x674 kernel/rcu/tree_exp.h:976 3 locks held by kworker/u8:8/4377: 2 locks held by getty/6181: #0: ffff0000d221f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b7fb2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 2 locks held by syz-executor/6416: #0: ffff0000dc67e0e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000dc67e0e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000dc67e0e0 (&type->s_umount_key#53){++++}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008fdd4e48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6419: #0: ffff0000f16d20e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000f16d20e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000f16d20e0 (&type->s_umount_key#53){++++}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008fdd4e48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6425: #0: ffff0000d77f60e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000d77f60e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000d77f60e0 (&type->s_umount_key#53){++++}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008fdd4e48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 3 locks held by kworker/u9:4/6427: #0: ffff0000faef2948 ((wq_completion)hci10){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff8000a5e17c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff0000dc914d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x194/0x34c net/bluetooth/hci_sync.c:327 3 locks held by kworker/u8:9/7190: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff8000a51f7c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz.2.253/7533: #0: ffff0000f16d20e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000f16d20e0 (&type->s_umount_key#53){++++}-{3:3}, at: super_lock+0x208/0x33c fs/super.c:120 1 lock held by syz.1.332/7755: #0: ffff0000d77f60e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff0000d77f60e0 (&type->s_umount_key#53){++++}-{3:3}, at: super_lock+0x244/0x33c fs/super.c:120 1 lock held by syz-executor/8793: #0: ffff0000c954e0e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000c954e0e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000c954e0e0 (&type->s_umount_key#53){++++}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/8794: #0: ffff80008f9d4cb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #0: ffff80008f9d4cb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x324/0x674 kernel/rcu/tree_exp.h:976 2 locks held by syz-executor/8812: #0: ffff0000d15cc0e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000d15cc0e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000d15cc0e0 (&type->s_umount_key#53){++++}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008fdd4e48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.2.612/8927: #0: ffff0000f16d20e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff0000f16d20e0 (&type->s_umount_key#53){++++}-{3:3}, at: super_lock+0x244/0x33c fs/super.c:120 1 lock held by syz-executor/9918: #0: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6643 1 lock held by syz-executor/9947: #0: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6643 =============================================