INFO: task syz-executor.0:3494 blocked for more than 430 seconds. Not tainted 6.16.0-rc5-syzkaller-g379f604cc3dc #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:3494 tgid:3494 ppid:1 task_flags:0x400140 flags:0x00000009 Call trace: __switch_to+0x208/0x4f4 arch/arm64/kernel/process.c:742 (T) context_switch kernel/sched/core.c:5401 [inline] __schedule+0xd34/0x3184 kernel/sched/core.c:6790 __schedule_loop kernel/sched/core.c:6868 [inline] schedule+0xd0/0x344 kernel/sched/core.c:6883 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6940 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x5d8/0x9d8 kernel/locking/mutex.c:747 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:799 fuse_lock_inode+0xa0/0xd8 fs/fuse/inode.c:594 fuse_lookup+0x148/0x394 fs/fuse/dir.c:434 __lookup_slow+0x1a0/0x310 fs/namei.c:1817 lookup_slow fs/namei.c:1834 [inline] walk_component+0x1f0/0x484 fs/namei.c:2138 link_path_walk+0x404/0xae0 fs/namei.c:2506 path_openat+0x168/0x24b0 fs/namei.c:4051 do_filp_open+0x184/0x360 fs/namei.c:4082 do_sys_openat2+0xe0/0x160 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+0x12c/0x1bc fs/open.c:1463 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x50/0x198 arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x10c/0x138 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz-executor.0:3614 blocked for more than 430 seconds. Not tainted 6.16.0-rc5-syzkaller-g379f604cc3dc #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:3614 tgid:3608 ppid:3494 task_flags:0x400140 flags:0x00000019 Call trace: __switch_to+0x208/0x4f4 arch/arm64/kernel/process.c:742 (T) context_switch kernel/sched/core.c:5401 [inline] __schedule+0xd34/0x3184 kernel/sched/core.c:6790 __schedule_loop kernel/sched/core.c:6868 [inline] schedule+0xd0/0x344 kernel/sched/core.c:6883 request_wait_answer+0x300/0x4ac fs/fuse/dev.c:565 __fuse_request_send fs/fuse/dev.c:579 [inline] __fuse_simple_request+0x1e8/0x97c fs/fuse/dev.c:673 fuse_simple_request fs/fuse/fuse_i.h:1237 [inline] fuse_lookup_name+0x214/0x630 fs/fuse/dir.c:388 fuse_lookup+0x190/0x394 fs/fuse/dir.c:435 __lookup_slow+0x1a0/0x310 fs/namei.c:1817 lookup_slow fs/namei.c:1834 [inline] walk_component+0x1f0/0x484 fs/namei.c:2138 link_path_walk+0x404/0xae0 fs/namei.c:2506 path_openat+0x168/0x24b0 fs/namei.c:4051 do_filp_open+0x184/0x360 fs/namei.c:4082 do_sys_openat2+0xe0/0x160 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+0x12c/0x1bc fs/open.c:1463 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x50/0x198 arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x10c/0x138 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by khungtaskd/32: #0: ffff8000872c06a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x18/0x1c4 kernel/locking/lockdep.c:6764 1 lock held by klogd/3105: 2 locks held by getty/3241: #0: ffff00001830d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80008d58b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3e8/0xdc0 drivers/tty/n_tty.c:2222 2 locks held by syz-executor.0/3494: #0: ffff00001bfe8148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:884 [inline] #0: ffff00001bfe8148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: lookup_slow fs/namei.c:1833 [inline] #0: ffff00001bfe8148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: walk_component+0x1e0/0x484 fs/namei.c:2138 #1: ffff00001bfe8608 (&fi->mutex){+.+.}-{4:4}, at: fuse_lock_inode+0xa0/0xd8 fs/fuse/inode.c:594 2 locks held by syz-executor.0/3614: #0: ffff00001bfe8148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:884 [inline] #0: ffff00001bfe8148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: lookup_slow fs/namei.c:1833 [inline] #0: ffff00001bfe8148 (&type->i_mutex_dir_key#8){++++}-{4:4}, at: walk_component+0x1e0/0x484 fs/namei.c:2138 #1: ffff00001bfe8608 (&fi->mutex){+.+.}-{4:4}, at: fuse_lock_inode+0xa0/0 #1: ffff00001bfe8608 (&fi->mutex){+.+.}-{4:4}, at: fuse_lock_inode+0xa0/0xd8 fs/fuse/inode.c:594 =============================================