INFO: task syz.1.1115:6385 blocked for more than 430 seconds. Not tainted 6.12.0-syzkaller-07749-g28eb75e178d3 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.1115 state:D stack:0 pid:6385 tgid:6385 ppid:3275 flags:0x0040000d Call trace: __switch_to+0x204/0x4bc arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5369 [inline] __schedule+0xafc/0x2db0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xd0/0x304 kernel/sched/core.c:6848 request_wait_answer+0x2d8/0x5fc fs/fuse/dev.c:464 __fuse_request_send fs/fuse/dev.c:478 [inline] __fuse_simple_request+0x1e8/0x97c fs/fuse/dev.c:572 fuse_simple_request fs/fuse/fuse_i.h:1156 [inline] fuse_flush+0x384/0x4cc fs/fuse/file.c:542 filp_flush+0xac/0x138 fs/open.c:1514 filp_close+0x18/0x38 fs/open.c:1527 __range_close fs/file.c:745 [inline] __do_sys_close_range fs/file.c:804 [inline] __se_sys_close_range fs/file.c:768 [inline] __arm64_sys_close_range+0x2b0/0x4c0 fs/file.c:768 __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_compat+0x40/0x68 arch/arm64/kernel/syscall.c:157 el0_svc_compat+0x4c/0x17c arch/arm64/kernel/entry-common.c:887 el0t_32_sync_handler+0x98/0x13c arch/arm64/kernel/entry-common.c:897 el0t_32_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:605 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff800086ed8960 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x48/0x340 kernel/locking/lockdep.c:6738 3 locks held by kworker/u8:7/1234: 2 locks held by kworker/u8:9/1283: 2 locks held by syslogd/3079: 1 lock held by klogd/3083: 2 locks held by getty/3213: #0: ffff000017a540a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80008cf9b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x93c/0xe9c drivers/tty/n_tty.c:2211 =============================================