INFO: task syz-executor.0:6443 blocked for more than 143 seconds. Not tainted 6.6.0-rc7-syzkaller-00089-g8de1e7afcc1c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:6443 ppid:1 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5382 [inline] __schedule+0x1364/0x23b4 kernel/sched/core.c:6695 schedule+0xc4/0x170 kernel/sched/core.c:6771 schedule_timeout+0x1d8/0x348 kernel/time/timer.c:2167 gfs2_gl_hash_clear+0x178/0x2e0 fs/gfs2/glock.c:2193 gfs2_put_super+0x6c0/0x754 fs/gfs2/super.c:644 generic_shutdown_super+0x130/0x2b8 fs/super.c:693 kill_block_super+0x40/0x74 fs/super.c:1646 gfs2_kill_sb+0x2cc/0x330 deactivate_locked_super+0xac/0x12c fs/super.c:481 deactivate_super+0xe0/0x100 fs/super.c:514 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1254 __cleanup_mnt+0x20/0x30 fs/namespace.c:1261 task_work_run+0x230/0x2e0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x214c/0x393c arch/arm64/kernel/signal.c:1305 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline] el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffff80008e513840 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:302 2 locks held by getty/5843: #0: ffff0000d262e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800094e302f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2206 1 lock held by syz-executor.0/6443: #0: ffff0000dc9fe0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000dc9fe0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000dc9fe0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:513 =============================================