INFO: task syz-executor:6529 blocked for more than 144 seconds. Not tainted 6.16.0-rc7-syzkaller-g29e0a1d9558f #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6529 tgid:6529 ppid:1 task_flags:0x400140 flags:0x00000011 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5397 [inline] __schedule+0x141c/0x2a14 kernel/sched/core.c:6786 __schedule_loop kernel/sched/core.c:6864 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6879 io_schedule+0x84/0xf0 kernel/sched/core.c:7724 folio_wait_bit_common+0x56c/0x9e0 mm/filemap.c:1317 __folio_lock mm/filemap.c:1675 [inline] folio_lock include/linux/pagemap.h:1114 [inline] __filemap_get_folio+0x1ec/0xc38 mm/filemap.c:1928 truncate_inode_pages_range+0x38c/0xe18 mm/truncate.c:388 truncate_inode_pages mm/truncate.c:460 [inline] truncate_inode_pages_final+0x8c/0xbc mm/truncate.c:495 evict+0x420/0x928 fs/inode.c:812 dispose_list fs/inode.c:852 [inline] evict_inodes+0x650/0x6e8 fs/inode.c:906 generic_shutdown_super+0xa0/0x2b8 fs/super.c:628 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: 4 locks held by kworker/u8:1/13: 1 lock held by khungtaskd/32: #0: ffff80008f869980 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by getty/6309: #0: ffff0000c19cd0a0 (&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/6529: #0: ffff0000d49980e0 (&type->s_umount_key#82){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000d49980e0 (&type->s_umount_key#82){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000d49980e0 (&type->s_umount_key#82){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 4 locks held by syz-executor/9445: #0: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x710/0x15dc net/core/rtnetlink.c:4054 #1: ffff0000f3260d38 (&dev_instance_lock_key#20){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2756 [inline] #1: ffff0000f3260d38 (&dev_instance_lock_key#20){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] #1: ffff0000f3260d38 (&dev_instance_lock_key#20){+.+.}-{4:4}, at: do_setlink+0x338/0x3658 net/core/rtnetlink.c:3051 #2: ffff80008f86f4f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:336 [inline] #2: ffff80008f86f4f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x290/0x628 kernel/rcu/tree_exp.h:998 #3: ffff00019bea3798 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:606 [inline] #3: ffff00019bea3798 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1532 [inline] #3: ffff00019bea3798 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1856 [inline] #3: ffff00019bea3798 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x340/0x2a14 kernel/sched/core.c:6710 1 lock held by udevd/9665: #0: ffff0000c149aa30 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:884 [inline] #0: ffff0000c149aa30 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: blkdev_read_iter+0x2a0/0x3dc block/fops.c:832 2 locks held by udevd/9668: 3 locks held by dhcpcd-run-hook/9672: 1 lock held by syz.8.677/9691: #0: ffff0000cc37a0e0 (&type->s_umount_key#49/1){+.+.}-{4:4}, at: alloc_super+0x1a0/0x80c fs/super.c:345 3 locks held by syz.0.679/9695: 1 lock held by syz.6.680/9698: =============================================