INFO: task syz-executor:6419 blocked for more than 143 seconds. Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6419 tgid:6419 ppid:1 flags:0x00000009 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16e0/0x27d0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 schedule_timeout+0xb8/0x33c kernel/time/timer.c:2591 do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:95 __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:148 __flush_work+0x794/0x954 kernel/workqueue.c:4217 flush_work kernel/workqueue.c:4238 [inline] flush_delayed_work+0xcc/0xf8 kernel/workqueue.c:4260 invalidate_dquots fs/quota/dquot.c:577 [inline] dquot_disable+0x670/0x1814 fs/quota/dquot.c:2295 ocfs2_disable_quotas+0xf0/0x1d4 fs/ocfs2/super.c:963 ocfs2_dismount_volume+0x1b4/0x920 fs/ocfs2/super.c:1870 ocfs2_put_super+0xec/0x368 fs/ocfs2/super.c:1608 generic_shutdown_super+0x12c/0x2bc fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz-executor:6420 blocked for more than 143 seconds. Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6420 tgid:6420 ppid:1 flags:0x00000009 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16e0/0x27d0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 schedule_timeout+0xb8/0x33c kernel/time/timer.c:2591 do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:95 __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:148 __flush_work+0x794/0x954 kernel/workqueue.c:4217 flush_work kernel/workqueue.c:4238 [inline] flush_delayed_work+0xcc/0xf8 kernel/workqueue.c:4260 invalidate_dquots fs/quota/dquot.c:577 [inline] dquot_disable+0x670/0x1814 fs/quota/dquot.c:2295 ocfs2_disable_quotas+0xf0/0x1d4 fs/ocfs2/super.c:963 ocfs2_dismount_volume+0x1b4/0x920 fs/ocfs2/super.c:1870 ocfs2_put_super+0xec/0x368 fs/ocfs2/super.c:1608 generic_shutdown_super+0x12c/0x2bc fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz-executor:6422 blocked for more than 143 seconds. Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6422 tgid:6422 ppid:1 flags:0x00000009 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16e0/0x27d0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 schedule_timeout+0xb8/0x33c kernel/time/timer.c:2591 do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:95 __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:148 __flush_work+0x794/0x954 kernel/workqueue.c:4217 flush_work kernel/workqueue.c:4238 [inline] flush_delayed_work+0xcc/0xf8 kernel/workqueue.c:4260 invalidate_dquots fs/quota/dquot.c:577 [inline] dquot_disable+0x670/0x1814 fs/quota/dquot.c:2295 ocfs2_disable_quotas+0xf0/0x1d4 fs/ocfs2/super.c:963 ocfs2_dismount_volume+0x1b4/0x920 fs/ocfs2/super.c:1870 ocfs2_put_super+0xec/0x368 fs/ocfs2/super.c:1608 generic_shutdown_super+0x12c/0x2bc fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz-executor:6424 blocked for more than 143 seconds. Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6424 tgid:6424 ppid:1 flags:0x00000009 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16e0/0x27d0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 schedule_timeout+0xb8/0x33c kernel/time/timer.c:2591 do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:95 __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:148 __flush_work+0x794/0x954 kernel/workqueue.c:4217 flush_work kernel/workqueue.c:4238 [inline] flush_delayed_work+0xcc/0xf8 kernel/workqueue.c:4260 invalidate_dquots fs/quota/dquot.c:577 [inline] dquot_disable+0x670/0x1814 fs/quota/dquot.c:2295 dquot_quota_off+0x2c/0x3c fs/quota/dquot.c:2347 ext4_quota_off+0xcc/0x470 fs/ext4/super.c:7121 ext4_quotas_off fs/ext4/super.c:1185 [inline] ext4_put_super+0xec/0xb70 fs/ext4/super.c:1300 generic_shutdown_super+0x12c/0x2bc fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 ext4_kill_sb+0x68/0xa4 fs/ext4/super.c:7320 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz-executor:6427 blocked for more than 143 seconds. Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6427 tgid:6427 ppid:1 flags:0x00000009 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16e0/0x27d0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 schedule_timeout+0xb8/0x33c kernel/time/timer.c:2591 do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:95 __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:148 __flush_work+0x794/0x954 kernel/workqueue.c:4217 flush_work kernel/workqueue.c:4238 [inline] flush_delayed_work+0xcc/0xf8 kernel/workqueue.c:4260 invalidate_dquots fs/quota/dquot.c:577 [inline] dquot_disable+0x670/0x1814 fs/quota/dquot.c:2295 ocfs2_disable_quotas+0xf0/0x1d4 fs/ocfs2/super.c:963 ocfs2_dismount_volume+0x1b4/0x920 fs/ocfs2/super.c:1870 ocfs2_put_super+0xec/0x368 fs/ocfs2/super.c:1608 generic_shutdown_super+0x12c/0x2bc fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff80008f9efee0 (rcu_read_lock){....}-{1:2} , at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 3 locks held by kworker/u8:2/40: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff800097fa7c20 ((linkwatch_work).work ){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff800092723e68 ( rtnl_mutex){+.+.}-{3:3} , at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/u8:4/327: 2 locks held by getty/6175: #0: ffff0000d77e20a0 ( &tty->ldisc_sem ){++++}-{0:0} , at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b81e2f0 (&ldata->atomic_read_lock ){+.+.}-{3:3} , at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 1 lock held by syz-executor/6419: #0: ffff0000f562e0e0 (&type->s_umount_key#51 ){+.+.}-{3:3} , at: __super_lock fs/super.c:56 [inline] , at: __super_lock_excl fs/super.c:71 [inline] , at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/6420: #0: ffff0000cf4e20e0 (&type->s_umount_key#51){+.+.}-{3:3} , at: __super_lock fs/super.c:56 [inline] , at: __super_lock_excl fs/super.c:71 [inline] , at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/6422: #0: ffff0000f51ae0e0 (&type->s_umount_key#51){+.+.}-{3:3} , at: __super_lock fs/super.c:56 [inline] , at: __super_lock_excl fs/super.c:71 [inline] , at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/6424: #0: ffff0000cea860e0 (&type->s_umount_key #32){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline] #32){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #32){++++}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/6427: #0: ffff0000e9a4e0e0 ( &type->s_umount_key#51 ){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] ){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] ){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 3 locks held by kworker/u8:16/7961: #0: ffff0000d1636148 ( (wq_completion)ipv6_addrconf){+.+.}-{0:0} , at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff8000a1357c20 ((work_completion)(&(&ifa->dad_work)->work) ){+.+.}-{0:0} , at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff800092723e68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by kworker/u8:20/7965: 1 lock held by syz-executor/8018: #0: ffff0000d3d820e0 ( &type->s_umount_key#51){+.+.}-{3:3} , at: __super_lock fs/super.c:56 [inline] , at: __super_lock_excl fs/super.c:71 [inline] , at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/8044: #0: ffff0000cf5800e0 (&type->s_umount_key#51 ){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] ){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] ){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/8076: #0: ffff0000f40440e0 ( &type->s_umount_key#51 ){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] ){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] ){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/8086: #0: ffff0000eff980e0 ( &type->s_umount_key#51){+.+.}-{3:3} , at: __super_lock fs/super.c:56 [inline] , at: __super_lock_excl fs/super.c:71 [inline] , at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/8115: #0: ffff0000ced940e0 (&type->s_umount_key #32 ){++++}-{3:3} , at: __super_lock fs/super.c:56 [inline] , at: __super_lock_excl fs/super.c:71 [inline] , at: deactivate_super+0xd8/0x100 fs/super.c:505 2 locks held by syz.2.985/9973: 2 locks held by syz.1.994/9999: #0: ffff800092723e68 (rtnl_mutex ){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 #1: ffff80008f9f5438 ( rcu_state.exp_mutex ){+.+.}-{3:3} , at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] , at: synchronize_rcu_expedited+0x354/0x674 kernel/rcu/tree_exp.h:976 =============================================