INFO: task kworker/1:1H:45 blocked for more than 143 seconds. Not tainted 6.14.0-syzkaller-g38fec10eb60d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1H state:D stack:0 pid:45 tgid:45 ppid:2 task_flags:0x4208060 flags:0x00000008 Workqueue: gfs2-glock/syz:syz glock_work_func Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5378 [inline] __schedule+0x1348/0x2564 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6857 io_schedule+0x8c/0x124 kernel/sched/core.c:7690 bit_wait_io+0x1c/0xac kernel/sched/wait_bit.c:247 __wait_on_bit_lock+0xcc/0x1e8 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0x194/0x21c kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:221 [inline] __lock_buffer fs/buffer.c:71 [inline] lock_buffer+0xf8/0x14c include/linux/buffer_head.h:426 discard_buffer fs/buffer.c:1576 [inline] block_invalidate_folio+0x240/0x600 fs/buffer.c:1633 folio_invalidate mm/truncate.c:126 [inline] truncate_cleanup_folio+0x260/0x40c mm/truncate.c:146 truncate_inode_pages_range+0x258/0xf28 mm/truncate.c:326 rgrp_go_inval+0x104/0x16c fs/gfs2/glops.c:239 do_xmote+0x5e4/0x10e4 fs/gfs2/glock.c:754 run_queue+0x434/0x6c0 fs/gfs2/glock.c:873 glock_work_func+0x2c8/0x53c fs/gfs2/glock.c:1090 process_one_work+0x7a8/0x15cc kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3400 kthread+0x5f8/0x744 kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 INFO: task syz-executor:6300 blocked for more than 143 seconds. Not tainted 6.14.0-syzkaller-g38fec10eb60d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6300 tgid:6300 ppid:1 task_flags:0x400140 flags:0x0000000d Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5378 [inline] __schedule+0x1348/0x2564 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6857 schedule_timeout+0xb4/0x290 kernel/time/sleep_timeout.c:75 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+0x798/0x958 kernel/workqueue.c:4244 flush_work kernel/workqueue.c:4265 [inline] flush_delayed_work+0xcc/0xf8 kernel/workqueue.c:4287 gfs2_clear_rgrpd+0xd4/0x5c8 fs/gfs2/rgrp.c:731 gfs2_put_super+0x6a0/0x744 fs/gfs2/super.c:647 generic_shutdown_super+0x12c/0x2bc fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 gfs2_kill_sb+0x2e4/0x348 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1413 __cleanup_mnt+0x20/0x30 fs/namespace.c:1420 task_work_run+0x230/0x2e0 kernel/task_work.c:227 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: ffff80008df4f4a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 2 locks held by kworker/1:1H/45: #0: ffff0000c587a948 ((wq_completion)gfs2-glock/syz:syz){+.+.}-{0:0}, at: process_one_work+0x60c/0x15cc kernel/workqueue.c:3212 #1: ffff800095a87ba0 ((work_completion)(&(&gl->gl_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a4/0x15cc kernel/workqueue.c:3212 2 locks held by getty/5375: #0: ffff0000d01cb0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff8000992ee2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 1 lock held by syz-executor/6300: #0: ffff0000d23c00e0 (&type->s_umount_key#52){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000d23c00e0 (&type->s_umount_key#52){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000d23c00e0 (&type->s_umount_key#52){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz.1.512/8559: =============================================