INFO: task kworker/u4:0:7 blocked for more than 430 seconds. Not tainted 5.17.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:0 state:D stack: 0 pid: 7 ppid: 2 flags:0x00000000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Backtrace: __schedule from schedule+0x54/0xdc kernel/sched/core.c:6368 r10:82816015 r9:828e4500 r8:00000002 r7:828e4500 r6:8295be94 r5:8295be98 r4:828e4500 schedule from schedule_timeout+0xcc/0x104 kernel/time/timer.c:1857 r5:8295be98 r4:7fffffff schedule_timeout from do_wait_for_common kernel/sched/completion.c:85 [inline] schedule_timeout from __wait_for_common kernel/sched/completion.c:106 [inline] schedule_timeout from wait_for_common kernel/sched/completion.c:117 [inline] schedule_timeout from wait_for_completion+0x84/0xf0 kernel/sched/completion.c:138 r6:8295be94 r5:8295be98 r4:7fffffff wait_for_completion from __synchronize_srcu.part.0+0xb0/0x12c kernel/rcu/srcutree.c:930 r8:00000110 r7:00000000 r6:00000000 r5:82497c30 r4:00000000 __synchronize_srcu.part.0 from __synchronize_srcu kernel/rcu/srcutree.c:923 [inline] __synchronize_srcu.part.0 from synchronize_srcu_expedited kernel/rcu/srcutree.c:955 [inline] __synchronize_srcu.part.0 from synchronize_srcu+0xe0/0x11c kernel/rcu/srcutree.c:1009 r7:82816000 r6:dddd9e40 r5:82497c30 r4:600d0013 synchronize_srcu from fsnotify_connector_destroy_workfn+0x38/0x5c fs/notify/mark.c:164 r7:82816000 r6:8280e800 r5:82497c28 r4:847dc8d0 fsnotify_connector_destroy_workfn from process_one_work+0x20c/0x5c0 kernel/workqueue.c:2307 r5:8280b980 r4:82310a8c process_one_work from worker_thread+0x6c/0x514 kernel/workqueue.c:2454 r10:00000088 r9:8280e800 r8:82204d00 r7:8280e81c r6:8280b998 r5:8280e800 r4:8280b980 worker_thread from kthread+0xf0/0x120 kernel/kthread.c:377 r10:00000000 r9:8294fe54 r8:8289dd00 r7:8280b980 r6:80262b24 r5:828e4500 r4:8289dac0 kthread from ret_from_fork+0x14/0x34 arch/arm/kernel/entry-common.S:146 Exception stack(0x8295bfb0 to 0x8295bff8) bfa0: 00000000 00000000 00000000 00000000 bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026a854 r4:8289dac0 INFO: task kworker/u4:5:2515 blocked for more than 430 seconds. Not tainted 5.17.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:5 state:D stack: 0 pid: 2515 ppid: 2 flags:0x00000000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Backtrace: __schedule from schedule+0x54/0xdc kernel/sched/core.c:6368 r10:82816015 r9:844a3980 r8:00000002 r7:844a3980 r6:83839e7c r5:83839e80 r4:844a3980 schedule from schedule_timeout+0xcc/0x104 kernel/time/timer.c:1857 r5:83839e80 r4:7fffffff schedule_timeout from do_wait_for_common kernel/sched/completion.c:85 [inline] schedule_timeout from __wait_for_common kernel/sched/completion.c:106 [inline] schedule_timeout from wait_for_common kernel/sched/completion.c:117 [inline] schedule_timeout from wait_for_completion+0x84/0xf0 kernel/sched/completion.c:138 r6:83839e7c r5:83839e80 r4:7fffffff wait_for_completion from __synchronize_srcu.part.0+0xb0/0x12c kernel/rcu/srcutree.c:930 r8:00000110 r7:00000000 r6:00000000 r5:82497c30 r4:00000000 __synchronize_srcu.part.0 from __synchronize_srcu kernel/rcu/srcutree.c:923 [inline] __synchronize_srcu.part.0 from synchronize_srcu_expedited kernel/rcu/srcutree.c:955 [inline] __synchronize_srcu.part.0 from synchronize_srcu+0xe0/0x11c kernel/rcu/srcutree.c:1009 r7:83839ed4 r6:dddeae40 r5:82497c30 r4:60000113 synchronize_srcu from fsnotify_mark_destroy_workfn+0x70/0xf4 fs/notify/mark.c:864 r7:83839ed4 r6:8280e800 r5:8543eb80 r4:82310a58 fsnotify_mark_destroy_workfn from process_one_work+0x20c/0x5c0 kernel/workqueue.c:2307 r7:82816000 r6:8280e800 r5:8543eb80 r4:82310a58 process_one_work from worker_thread+0x6c/0x514 kernel/workqueue.c:2454 r10:00000088 r9:8280e800 r8:82204d00 r7:8280e81c r6:8543eb98 r5:8280e800 r4:8543eb80 worker_thread from kthread+0xf0/0x120 kernel/kthread.c:377 r10:00000000 r9:8380de8c r8:85443f40 r7:8543eb80 r6:80262b24 r5:844a3980 r4:84c47d40 kthread from ret_from_fork+0x14/0x34 arch/arm/kernel/entry-common.S:146 Exception stack(0x83839fb0 to 0x83839ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026a854 r4:84c47d40 NMI backtrace for cpu 0 CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.17.0-rc2-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: dump_backtrace from show_stack+0x18/0x1c arch/arm/kernel/traps.c:239 r7:00000000 r6:00000000 r5:600e0093 r4:81d699b4 show_stack from __dump_stack lib/dump_stack.c:88 [inline] show_stack from dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106 dump_stack_lvl from dump_stack+0x18/0x1c lib/dump_stack.c:113 r5:000e0013 r4:00000000 dump_stack from nmi_cpu_backtrace+0x114/0x180 lib/nmi_backtrace.c:111 nmi_cpu_backtrace from nmi_trigger_cpumask_backtrace+0x118/0x1d4 lib/nmi_backtrace.c:62 r7:00000000 r6:8220c494 r5:8220ccc8 r4:00000000 nmi_trigger_cpumask_backtrace from arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:862 r9:000193c0 r8:82204d00 r7:00007f48 r6:8248996c r5:8220c5dc r4:85396f40 arch_trigger_cpumask_backtrace from trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] arch_trigger_cpumask_backtrace from check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] arch_trigger_cpumask_backtrace from watchdog+0x4a0/0x58c kernel/hung_task.c:369 watchdog from kthread+0xf0/0x120 kernel/kthread.c:377 r10:00000000 r9:8294fe4c r8:82a84380 r7:00000000 r6:8032b8b0 r5:828f2e00 r4:82a84340 kthread from ret_from_fork+0x14/0x34 arch/arm/kernel/entry-common.S:146 Exception stack(0x82a27fb0 to 0x82a27ff8) 7fa0: 00000000 00000000 00000000 00000000 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026a854 r4:82a84340 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2226 Comm: syz-fuzzer Not tainted 5.17.0-rc2-syzkaller #0 Hardware name: ARM-Versatile Express PC is at 0x1128b4 LR is at 0x1128b4 pc : [<001128b4>] lr : [<001128b4>] psr: 20000010 sp : 18947634 ip : 109b75a0 fp : ffffffe2 r10: 02604700 r9 : 00491188 r8 : 00000000 r7 : 00000010 r6 : 00000004 r5 : 00000007 r4 : 109bbdc0 r3 : 109bc540 r2 : 189476b4 r1 : 189476f8 r0 : 00000000 Flags: nzCv IRQs on FIQs on Mode USER_32 ISA ARM Segment none Control: 30c5387d Table: 84d64f80 DAC: 00000000 CPU: 1 PID: 2226 Comm: syz-fuzzer Not tainted 5.17.0-rc2-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: dump_backtrace from show_stack+0x18/0x1c arch/arm/kernel/traps.c:239 r7:00000017 r6:842ddfb0 r5:60000193 r4:81d699b4 show_stack from __dump_stack lib/dump_stack.c:88 [inline] show_stack from dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106 dump_stack_lvl from dump_stack+0x18/0x1c lib/dump_stack.c:113 r5:00000193 r4:00000001 dump_stack from show_regs+0x14/0x18 arch/arm/kernel/process.c:199 show_regs from nmi_cpu_backtrace+0xfc/0x180 lib/nmi_backtrace.c:109 nmi_cpu_backtrace from do_handle_IPI+0x4c/0x3b4 arch/arm/kernel/smp.c:677 r7:00000017 r6:00000001 r5:8280cb80 r4:00000007 do_handle_IPI from ipi_handler+0x20/0x28 arch/arm/kernel/smp.c:705 r9:00491188 r8:842ddf18 r7:00000017 r6:8220cce4 r5:8280cb80 r4:82887d00 ipi_handler from handle_percpu_devid_irq+0x9c/0x2d4 kernel/irq/chip.c:931 handle_percpu_devid_irq from generic_handle_irq_desc include/linux/irqdesc.h:158 [inline] handle_percpu_devid_irq from handle_irq_desc kernel/irq/irqdesc.c:646 [inline] handle_percpu_devid_irq from generic_handle_domain_irq+0x48/0x8c kernel/irq/irqdesc.c:680 r10:02604700 r9:00491188 r8:00000000 r7:df80200c r6:84375080 r5:00000007 r4:8288c000 r3:802b9d70 generic_handle_domain_irq from gic_handle_irq+0x68/0x7c drivers/irqchip/irq-gic.c:372 r7:df80200c r6:820a6084 r5:df802000 r4:8220cce4 gic_handle_irq from generic_handle_arch_irq+0x60/0x80 kernel/irq/handle.c:238 r7:842ddfb0 r6:81f13ffc r5:81f14014 r4:820a6078 generic_handle_arch_irq from __irq_usr+0x5c/0x80 arch/arm/kernel/entry-armv.S:429 Exception stack(0x842ddfb0 to 0x842ddff8) dfa0: 00000000 189476f8 189476b4 109bc540 dfc0: 109bbdc0 00000007 00000004 00000010 00000000 00491188 02604700 ffffffe2 dfe0: 109b75a0 18947634 001128b4 001128b4 20000010 ffffffff r9:00491188 r8:5bd3e000 r7:84375080 r6:ffffffff r5:20000010 r4:001128b4