INFO: task syz-executor:6524 blocked for more than 143 seconds. Not tainted 6.16.0-rc6-syzkaller-gaaef6f251176 #0 "echo 0 > /proc/sys/kernel/hung_t "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6524 tgid:6524 ppid:6521 task_flags:0x400140 flags:0x00000010 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5397 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6786 __schedule_loop kernel/sched/core.c:6864 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6879 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6936 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 lmLogClose+0xb0/0x4c4 fs/jfs/jfs_logmgr.c:1444 jfs_umount+0x26c/0x350 fs/jfs/jfs_umount.c:114 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643 kill_block_super+0x44/0x90 fs/super.c:1755 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1417 __cleanup_mnt+0x20/0x30 fs/namespace.c:1424 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x174/0x1f4 arch/arm64/kernel/entry-common.c:155 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:173 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:182 [inline] el0_svc+0xb8/0x180 arch/arm64/kernel/entry-common.c:880 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 1 lock held by kthreadd/2: 2 locks held by kworker/0:1/10: 3 locks held by kworker/u8:0/12: 4 locks held by kworker/u8:1/14: 2 locks held by kworker/1:0/24: 4 locks held by kworker/1:1/26: 1 lock held by khungtaskd/32: #0: ffff80008f869980 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/41: 3 locks held by kworker/u8:3/42: 2 locks held by pr/ttyAMA0/43: 3 locks held by kworker/u8:4/208: 3 locks held by kworker/u8:5/277: 3 locks held by kworker/u8:6/464: 6 locks held by kworker/u8:7/579: #0: ffff0000c18a2148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff80009cd17bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928bad50 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf4/0x6c0 net/core/net_namespace.c:662 #3: ffff0000d9fc10e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #3: ffff0000d9fc10e8 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline] #3: ffff0000d9fc10e8 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0xe4/0x380 net/devlink/core.c:506 #4: ffff0000d9fc2250 (&devlink->lock_key#2){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:276 [inline] #4: ffff0000d9fc2250 (&devlink->lock_key#2){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline] #4: ffff0000d9fc2250 (&devlink->lock_key#2){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0xf0/0x380 net/devlink/core.c:506 #5: ffff8000928c78e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:8/598: 3 locks held by kworker/u8:9/2117: 3 locks held by kworker/R-ipv6_/4171: #0: ffff0000d2903948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a0677ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928c78e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/R-bat_e/4252: 1 lock held by klogd/6129: 2 locks held by udevd/6140: 1 lock held by dhcpcd/6194: 1 lock held by dhcpcd/6195: 2 locks held by getty/6282: #0: ffff0000d30970a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba3e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 1 lock held by syz-executor/6509: 1 lock held by udevd/6515: 3 locks held by udevd/6517: 2 locks held by syz-executor/6524: #0: ffff0000d1fba0e0 (&type->s_umount_key#58){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000d1fba0e0 (&type->s_umount_key#58){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000d1fba0e0 (&type->s_umount_key#58){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 #1: ffff80008fc985c8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb0/0x4c4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6531: #0: ffff0000c7e580e0 (&type->s_umount_key#58){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000c7e580e0 (&type->s_umount_key#58){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000c7e580e0 (&type->s_umount_key#58){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 #1: ffff80008fc985c8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb0/0x4c4 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz-executor/6535: 4 locks held by kworker/1:4/6579: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000b2147bc0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928c78e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000cec10768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6062 [inline] #3: ffff0000cec10768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209 2 locks held by kworker/0:6/6635: 1 lock held by udevd/6673: 3 locks held by udevd/6691: 1 lock held by udevd/7655: #0: ffff0000c14835b0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:884 [inline] #0: ffff0000c14835b0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: blkdev_read_iter+0x2a0/0x3dc block/fops.c:832 2 locks held by syz-executor/8467: 4 locks held by kworker/u8:10/8468: 3 locks held by kworker/u8:11/8469: 3 locks held by kworker/u8:12/8470: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a1587bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928c78e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/u8:13/8472: 1 lock held by syz-executor/8474: =============================================