INFO: task syz-executor.0:6757 blocked for more than 143 seconds. Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:6757 tgid:6757 ppid:1 task_flags:0x400140 flags:0x00000009 Call trace: __switch_to+0x418/0x87c 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 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6936 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 fuse_lock_inode+0xd4/0x128 fs/fuse/inode.c:594 fuse_lookup+0x134/0x538 fs/fuse/dir.c:434 __lookup_slow+0x254/0x378 fs/namei.c:1817 lookup_slow+0x5c/0x80 fs/namei.c:1834 walk_component fs/namei.c:2138 [inline] link_path_walk+0x790/0xc98 fs/namei.c:2506 path_openat+0x1cc/0x2c40 fs/namei.c:4051 do_filp_open+0x18c/0x36c fs/namei.c:4082 do_sys_openat2+0x11c/0x1b4 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1463 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 INFO: task syz-executor.0:6858 blocked for more than 143 seconds. Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:6858 tgid:6851 ppid:6757 task_flags:0x400140 flags:0x00000019 Call trace: __switch_to+0x418/0x87c 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 request_wait_answer fs/fuse/dev.c:565 [inline] __fuse_request_send fs/fuse/dev.c:579 [inline] __fuse_simple_request+0xbe8/0x141c fs/fuse/dev.c:673 fuse_simple_request fs/fuse/fuse_i.h:1237 [inline] fuse_lookup_name+0x280/0x6c8 fs/fuse/dir.c:388 fuse_lookup+0x178/0x538 fs/fuse/dir.c:435 __lookup_slow+0x254/0x378 fs/namei.c:1817 lookup_slow+0x5c/0x80 fs/namei.c:1834 walk_component fs/namei.c:2138 [inline] link_path_walk+0x790/0xc98 fs/namei.c:2506 path_openat+0x1cc/0x2c40 fs/namei.c:4051 do_filp_open+0x18c/0x36c fs/namei.c:4082 do_sys_openat2+0x11c/0x1b4 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1463 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 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: 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 pr/ttyAMA0/43: 1 lock held by klogd/6134: 2 locks held by getty/6301: #0: ffff0000c19c90a0 (&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 2 locks held by syz-executor.0/6757: #0: ffff0000e3d18148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:884 [inline] #0: ffff0000e3d18148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: lookup_slow+0x4c/0x80 fs/namei.c:1833 #1: ffff0000e3d18608 (&fi->mutex){+.+.}-{4:4}, at: fuse_lock_inode+0xd4/0x128 fs/fuse/inode.c:594 2 locks held by syz-executor.0/6858: #0: ffff0000e3d18148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:884 [inline] #0: ffff0000e3d18148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: lookup_slow+0x4c/0x80 fs/namei.c:1833 #1: ffff0000e3d18608 (&fi->mutex){+.+.}-{4:4}, at: fuse_lock_inode+0xd4/0x128 fs/fuse/inode.c:594 =============================================