INFO: task syz-executor.3:18646 blocked for more than 143 seconds. Not tainted 5.15.151-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack: 0 pid:18646 ppid: 4006 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:1047 __down_read_common kernel/locking/rwsem.c:1231 [inline] __down_read kernel/locking/rwsem.c:1244 [inline] down_read+0x10c/0x398 kernel/locking/rwsem.c:1490 iterate_supers+0xb0/0x1dc fs/super.c:703 quota_sync_all fs/quota/quota.c:68 [inline] __do_sys_quotactl fs/quota/quota.c:936 [inline] __se_sys_quotactl fs/quota/quota.c:915 [inline] __arm64_sys_quotactl+0x39c/0x7a4 fs/quota/quota.c:915 __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: ffff800014ae1420 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:268 2 locks held by getty/3718: #0: ffff0000d3c1d098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001a1bb2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 drivers/tty/n_tty.c:2158 2 locks held by kworker/u4:7/4596: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff0001b4814c48 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x438/0x66c kernel/sched/psi.c:891 1 lock held by syz-executor.2/1238: 2 locks held by kworker/1:13/16155: #0: ffff0000c0021938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff8000252e7c00 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285 1 lock held by syz-executor.3/18646: #0: ffff000119a8e0e0 (&type->s_umount_key#61){++++}-{3:3}, at: iterate_supers+0xb0/0x1dc fs/super.c:703 2 locks held by kworker/u4:9/21483: 2 locks held by syz-executor.0/24614: 2 locks held by syz-executor.4/24622: 2 locks held by syz-executor.3/24633: 1 lock held by syz-executor.2/24644: #0: ffff000119289518 (&rp->fetch_lock){+.+.}-{3:3}, at: mon_bin_read+0x64/0x69c drivers/usb/mon/mon_bin.c:813 1 lock held by syz-executor.2/24647: #0: ffff000119289518 (&rp->fetch_lock){+.+.}-{3:3}, at: mon_bin_fetch+0x48/0x3e8 drivers/usb/mon/mon_bin.c:909 1 lock held by syz-executor.2/24649: #0: ffff000119289518 (&rp->fetch_lock){+.+.}-{3:3}, at: mon_bin_flush+0x48/0x2fc drivers/usb/mon/mon_bin.c:878 1 lock held by syz-executor.2/24652: #0: ffff000119289518 (&rp->fetch_lock){+.+.}-{3:3}, at: mon_bin_flush+0x48/0x2fc drivers/usb/mon/mon_bin.c:878 1 lock held by syz-executor.2/24655: #0: ffff000119289518 (&rp->fetch_lock){+.+.}-{3:3}, at: mon_bin_flush+0x48/0x2fc drivers/usb/mon/mon_bin.c:878 =============================================