INFO: task syz-executor.2:24295 blocked for more than 143 seconds. Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:24295 ppid:6022 flags:0x00000005 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5343 [inline] __schedule+0x1368/0x23b8 kernel/sched/core.c:6669 schedule+0xc4/0x170 kernel/sched/core.c:6745 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6804 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_lookup+0x128/0x45c fs/reiserfs/namei.c:364 __lookup_slow+0x250/0x374 fs/namei.c:1690 lookup_slow+0x60/0x84 fs/namei.c:1707 walk_component+0x280/0x36c fs/namei.c:1998 lookup_last fs/namei.c:2455 [inline] path_lookupat+0x13c/0x3d0 fs/namei.c:2479 filename_lookup+0x1d4/0x4e0 fs/namei.c:2508 vfs_statx+0xf8/0x420 fs/stat.c:238 vfs_fstatat fs/stat.c:276 [inline] __do_sys_newfstatat fs/stat.c:446 [inline] __se_sys_newfstatat fs/stat.c:440 [inline] __arm64_sys_newfstatat+0x12c/0x1b4 fs/stat.c:440 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 INFO: task syz-executor.2:24296 blocked for more than 143 seconds. Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:24296 ppid:6022 flags:0x00000005 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5343 [inline] __schedule+0x1368/0x23b8 kernel/sched/core.c:6669 schedule+0xc4/0x170 kernel/sched/core.c:6745 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6804 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_sync_fs+0xa0/0x150 fs/reiserfs/super.c:76 sync_filesystem+0xe8/0x218 fs/sync.c:56 reiserfs_remount+0x1b0/0x13f4 fs/reiserfs/super.c:1445 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:633 reconfigure_super+0x328/0x738 fs/super.c:956 do_remount fs/namespace.c:2701 [inline] path_mount+0xc0c/0xe04 fs/namespace.c:3361 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffff80008e0c16d0 ( rcu_tasks.tasks_gp_mutex ){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:518 1 lock held by rcu_tasks_trace/14: #0: ffff80008e0c1a90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:518 1 lock held by khungtaskd/29: #0: ffff80008e0c1500 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:326 2 locks held by getty/5731: #0: ffff0000d525c098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800092e702f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2176 4 locks held by kworker/1:19/15505: #0: ffff0000c0021538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2378 #1: ffff800097c87c20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4 kernel/workqueue.c:2380 #2: ffff0000d87060e0 (&type->s_umount_key#50){++++}-{3:3}, at: flush_old_commits+0xcc/0x2b8 fs/reiserfs/super.c:97 #3: ffff00012d8f7090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 8 locks held by syz-executor.2/24277: 2 locks held by syz-executor.2/24295: #0: ffff000126cc5fa0 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:785 [inline] #0: ffff000126cc5fa0 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1706 #1: ffff0000d1ca0090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 2 locks held by syz-executor.2/24296: #0: ffff0000cd15e0e0 (&type->s_umount_key#50){++++}-{3:3}, at: do_remount fs/namespace.c:2698 [inline] #0: ffff0000cd15e0e0 (&type->s_umount_key#50){++++}-{3:3}, at: path_mount+0xbdc/0xe04 fs/namespace.c:3361 #1: ffff0000d1ca0090 (&sbi->lock ){+.+.}-{3:3} , at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 5 locks held by syz-executor.1/26042: 3 locks held by syz-executor.1/26054: #0: ffff00012c1154e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xd8/0x104 fs/file.c:1047 #1: ffff000126cc1020 ( &type->i_mutex_dir_key#10){++++}-{3:3}, at: iterate_dir+0x108/0x4e4 fs/readdir.c:55 #2: ffff00012d8f7090 (&sbi->lock){+.+.}-{3:3} , at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 2 locks held by syz-executor.1/26059: #0: ffff0000d8706460 ( sb_writers #19 ){.+.+}-{0:0} , at: mnt_want_write+0x44/0x9c fs/namespace.c:394 #1: ffff000126cc1020 ( &type->i_mutex_dir_key #10 ){++++}-{3:3} , at: inode_lock include/linux/fs.h:775 [inline] , at: open_last_lookups fs/namei.c:3557 [inline] , at: path_openat+0x5f0/0x27f8 fs/namei.c:3788 =============================================