INFO: task syz-executor.0:6236 blocked for more than 143 seconds. Not tainted 5.15.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack: 0 pid: 6236 ppid: 5057 flags:0x0000000d Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5030 [inline] __schedule+0xf10/0x1e48 kernel/sched/core.c:6376 schedule+0x11c/0x1c8 kernel/sched/core.c:6459 rwsem_down_write_slowpath+0xd94/0x17e0 kernel/locking/rwsem.c:1165 __down_write_common kernel/locking/rwsem.c:1292 [inline] __down_write kernel/locking/rwsem.c:1301 [inline] down_write_nested+0xec/0x130 kernel/locking/rwsem.c:1668 inode_lock_nested include/linux/fs.h:824 [inline] filename_create+0x204/0x468 fs/namei.c:3835 do_mkdirat+0xac/0x610 fs/namei.c:4080 __do_sys_mkdirat fs/namei.c:4105 [inline] __se_sys_mkdirat fs/namei.c:4103 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4103 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz-executor.0:6240 blocked for more than 143 seconds. Not tainted 5.15.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack: 0 pid: 6240 ppid: 5057 flags:0x0000000d Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5030 [inline] __schedule+0xf10/0x1e48 kernel/sched/core.c:6376 schedule+0x11c/0x1c8 kernel/sched/core.c:6459 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6518 rwsem_down_read_slowpath+0x5b0/0x988 kernel/locking/rwsem.c:1055 __down_read_common kernel/locking/rwsem.c:1239 [inline] __down_read kernel/locking/rwsem.c:1252 [inline] down_read+0x10c/0x398 kernel/locking/rwsem.c:1500 inode_lock_shared include/linux/fs.h:799 [inline] open_last_lookups fs/namei.c:3531 [inline] path_openat+0x630/0x26cc fs/namei.c:3739 do_filp_open+0x1a8/0x3b4 fs/namei.c:3769 do_sys_openat2+0x128/0x3d8 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1280 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz-executor.0:6244 blocked for more than 143 seconds. Not tainted 5.15.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack: 0 pid: 6244 ppid: 5057 flags:0x00000005 Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5030 [inline] __schedule+0xf10/0x1e48 kernel/sched/core.c:6376 schedule+0x11c/0x1c8 kernel/sched/core.c:6459 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6518 rwsem_down_read_slowpath+0x5b0/0x988 kernel/locking/rwsem.c:1055 __down_read_common kernel/locking/rwsem.c:1239 [inline] __down_read kernel/locking/rwsem.c:1252 [inline] down_read+0x10c/0x398 kernel/locking/rwsem.c:1500 inode_lock_shared include/linux/fs.h:799 [inline] lookup_slow+0x50/0x84 fs/namei.c:1679 walk_component+0x394/0x4cc fs/namei.c:1976 lookup_last fs/namei.c:2431 [inline] path_lookupat+0x13c/0x3d0 fs/namei.c:2455 filename_lookup+0x1c4/0x4c8 fs/namei.c:2484 user_path_at_empty+0x5c/0x1a4 fs/namei.c:2883 user_path_at include/linux/namei.h:57 [inline] do_mount fs/namespace.c:3345 [inline] __do_sys_mount fs/namespace.c:3556 [inline] __se_sys_mount fs/namespace.c:3533 [inline] __arm64_sys_mount+0x4dc/0x5e0 fs/namespace.c:3533 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffff800014b114e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311 2 locks held by kworker/u4:3/285: 1 lock held by udevd/3584: 2 locks held by getty/3726: #0: ffff0000d326b098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff800018e132e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 drivers/tty/n_tty.c:2158 3 locks held by kworker/1:4/4025: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff80001cae7c00 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285 #2: ffff800014b159f0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x54/0x4b0 kernel/rcu/tree.c:4039 2 locks held by kworker/u4:8/4844: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff80001d357c00 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285 2 locks held by syz-executor.0/6224: 1 lock held by syz-executor.0/6236: #0: ffff0000e92ac188 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:824 [inline] #0: ffff0000e92ac188 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: filename_create+0x204/0x468 fs/namei.c:3835 1 lock held by syz-executor.0/6240: #0: ffff0000e92ac188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline] #0: ffff0000e92ac188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline] #0: ffff0000e92ac188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: path_openat+0x630/0x26cc fs/namei.c:3739 1 lock held by syz-executor.0/6244: #0: ffff0000e92ac188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline] #0: ffff0000e92ac188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1679 2 locks held by syz-executor.2/6769: 1 lock held by syz-executor.2/6770: #0: ffff000104108188 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:824 [inline] #0: ffff000104108188 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: filename_create+0x204/0x468 fs/namei.c:3835 1 lock held by syz-executor.2/6771: #0: ffff000104108188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline] #0: ffff000104108188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline] #0: ffff000104108188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: path_openat+0x630/0x26cc fs/namei.c:3739 1 lock held by syz-executor.2/6772: #0: ffff000104108188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline] #0: ffff000104108188 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1679 2 locks held by syz-executor.3/7430: 1 lock held by syz-executor.3/7436: #0: ffff0000e92ac6d0 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:824 [inline] #0: ffff0000e92ac6d0 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: filename_create+0x204/0x468 fs/namei.c:3835 1 lock held by syz-executor.3/7437: #0: ffff0000e92ac6d0 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline] #0: ffff0000e92ac6d0 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline] #0: ffff0000e92ac6d0 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: path_openat+0x630/0x26cc fs/namei.c:3739 1 lock held by syz-executor.3/7438: #0: ffff0000e92ac6d0 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline] #0: ffff0000e92ac6d0 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1679 1 lock held by syz-executor.1/7837: 1 lock held by syz-executor.1/7842: #0: ffff0000e92acc18 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:824 [inline] #0: ffff0000e92acc18 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: filename_create+0x204/0x468 fs/namei.c:3835 1 lock held by syz-executor.1/7844: #0: ffff0000e92acc18 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline] #0: ffff0000e92acc18 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3531 [inline] #0: ffff0000e92acc18 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: path_openat+0x630/0x26cc fs/namei.c:3739 1 lock held by syz-executor.1/7845: #0: ffff0000e92acc18 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline] #0: ffff0000e92acc18 (&type->i_mutex_dir_key#21){.+.+}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1679 1 lock held by udevd/8717: 1 lock held by syz-executor.3/8854: #0: ffff0001b47fe958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:475 [inline] #0: ffff0001b47fe958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1326 [inline] #0: ffff0001b47fe958 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1621 [inline] #0: ffff0001b47fe958 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x328/0x1e48 kernel/sched/core.c:6290 =============================================