INFO: task kworker/u4:25:2976 blocked for more than 430 seconds. Not tainted 5.19.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:25 state:D stack: 0 pid: 2976 ppid: 2 flags:0x00000000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Backtrace: [<81710908>] (__schedule) from [<81711390>] (schedule+0x54/0xbc kernel/sched/core.c:6530) r10:00000000 r9:853b4680 r8:eae99e7c r7:eae99e24 r6:00000002 r5:eae99e80 r4:853b4680 [<8171133c>] (schedule) from [<81717d24>] (schedule_timeout+0xcc/0x104 kernel/time/timer.c:1911) r5:eae99e80 r4:7fffffff [<81717c58>] (schedule_timeout) from [<81712124>] (do_wait_for_common kernel/sched/completion.c:85 [inline]) [<81717c58>] (schedule_timeout) from [<81712124>] (__wait_for_common+0x9c/0x1dc kernel/sched/completion.c:106) r6:00000002 r5:eae99e80 r4:7fffffff [<81712088>] (__wait_for_common) from [<81712284>] (wait_for_common kernel/sched/completion.c:117 [inline]) [<81712088>] (__wait_for_common) from [<81712284>] (wait_for_completion+0x20/0x24 kernel/sched/completion.c:138) r10:82816015 r9:853b4680 r8:00000110 r7:00000000 r6:00000000 r5:82697cb0 r4:00000000 [<81712264>] (wait_for_completion) from [<802c6aac>] (__synchronize_srcu.part.0+0xb0/0x12c kernel/rcu/srcutree.c:1170) [<802c69fc>] (__synchronize_srcu.part.0) from [<802c6c40>] (__synchronize_srcu kernel/rcu/srcutree.c:1163 [inline]) [<802c69fc>] (__synchronize_srcu.part.0) from [<802c6c40>] (synchronize_srcu_expedited kernel/rcu/srcutree.c:1195 [inline]) [<802c69fc>] (__synchronize_srcu.part.0) from [<802c6c40>] (synchronize_srcu+0xe0/0x11c kernel/rcu/srcutree.c:1249) r7:eae99ed4 r6:dddd98c0 r5:82697cb0 r4:60000113 [<802c6b60>] (synchronize_srcu) from [<804ef5ac>] (fsnotify_mark_destroy_workfn+0x70/0xf4 fs/notify/mark.c:898) r7:eae99ed4 r6:8280e800 r5:8535bc00 r4:82512228 [<804ef53c>] (fsnotify_mark_destroy_workfn) from [<80261d40>] (process_one_work+0x20c/0x594 kernel/workqueue.c:2289) r7:82816000 r6:8280e800 r5:8535bc00 r4:82512228 [<80261b34>] (process_one_work) from [<80262134>] (worker_thread+0x6c/0x4e0 kernel/workqueue.c:2436) r10:8280e800 r9:00000088 r8:82404d40 r7:8280e81c r6:8535bc18 r5:8280e800 r4:8535bc00 [<802620c8>] (worker_thread) from [<8026a954>] (kthread+0xf0/0x120 kernel/kthread.c:376) r10:00000000 r9:ead55e8c r8:853f1b00 r7:8535bc00 r6:802620c8 r5:853b4680 r4:853e5300 [<8026a864>] (kthread) from [<80200100>] (ret_from_fork+0x14/0x34 arch/arm/kernel/entry-common.S:148) Exception stack(0xeae99fb0 to 0xeae99ff8) 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 r5:8026a864 r4:853e5300 NMI backtrace for cpu 0 CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.19.0-rc3-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<816f2b24>] (dump_backtrace) from [<816f2e54>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:253) r7:00000000 r6:00000000 r5:60000193 r4:81d7fdd0 [<816f2e3c>] (show_stack) from [<816fb77c>] (__dump_stack lib/dump_stack.c:88 [inline]) [<816f2e3c>] (show_stack) from [<816fb77c>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<816fb734>] (dump_stack_lvl) from [<816fb7a0>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000113 r4:00000000 [<816fb788>] (dump_stack) from [<8081f70c>] (nmi_cpu_backtrace+0x114/0x180 lib/nmi_backtrace.c:111) [<8081f5f8>] (nmi_cpu_backtrace) from [<8081f8a8>] (nmi_trigger_cpumask_backtrace+0x130/0x1d0 lib/nmi_backtrace.c:62) r7:00000000 r6:8240c494 r5:8240ccd4 r4:00000000 [<8081f778>] (nmi_trigger_cpumask_backtrace) from [<802110bc>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:863) r9:0001dbc0 r8:82404d40 r7:00007f5f r6:8268999c r5:8240c5fc r4:00000000 [<802110a4>] (arch_trigger_cpumask_backtrace) from [<8032de24>] (trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]) [<802110a4>] (arch_trigger_cpumask_backtrace) from [<8032de24>] (check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]) [<802110a4>] (arch_trigger_cpumask_backtrace) from [<8032de24>] (watchdog+0x4b0/0x5c8 kernel/hung_task.c:378) [<8032d974>] (watchdog) from [<8026a954>] (kthread+0xf0/0x120 kernel/kthread.c:376) r10:00000000 r9:df819e4c r8:82a19ac0 r7:00000000 r6:8032d974 r5:828f4680 r4:82ad9300 [<8026a864>] (kthread) from [<80200100>] (ret_from_fork+0x14/0x34 arch/arm/kernel/entry-common.S:148) Exception stack(0xdf8c9fb0 to 0xdf8c9ff8) 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 r5:8026a864 r4:82ad9300 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 13 Comm: rcu_preempt Not tainted 5.19.0-rc3-syzkaller #0 Hardware name: ARM-Versatile Express PC is at kmap_local_sched_in kernel/sched/core.c:4932 [inline] PC is at finish_task_switch+0x8c/0x270 kernel/sched/core.c:5034 LR is at __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline] LR is at _raw_spin_unlock+0x2c/0x50 kernel/locking/spinlock.c:186 pc : [<80276a94>] lr : [<81719000>] psr: 20000113 sp : df84de08 ip : df84ddf8 fp : df84de4c r10: 00000000 r9 : 828e9780 r8 : 00000000 r7 : 84689000 r6 : 00000000 r5 : ddde5b00 r4 : 00000000 r3 : 828e9780 r2 : 00000001 r1 : 81d7fdd0 r0 : 00000001 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 8567d3c0 DAC: 00000000 CPU: 1 PID: 13 Comm: rcu_preempt Not tainted 5.19.0-rc3-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: frame pointer underflow [<816f2b24>] (dump_backtrace) from [<816f2e54>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:253) r7:00000017 r6:df84ddb8 r5:60000193 r4:81d7fdd0 [<816f2e3c>] (show_stack) from [<816fb77c>] (__dump_stack lib/dump_stack.c:88 [inline]) [<816f2e3c>] (show_stack) from [<816fb77c>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<816fb734>] (dump_stack_lvl) from [<816fb7a0>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000193 r4:00000001 [<816fb788>] (dump_stack) from [<80209124>] (show_regs+0x14/0x18 arch/arm/kernel/process.c:204) [<80209110>] (show_regs) from [<8081f6f4>] (nmi_cpu_backtrace+0xfc/0x180 lib/nmi_backtrace.c:109) [<8081f5f8>] (nmi_cpu_backtrace) from [<8021020c>] (do_handle_IPI+0x4c/0x3b4 arch/arm/kernel/smp.c:678) r7:00000017 r6:00000001 r5:8280cc40 r4:00000007 [<802101c0>] (do_handle_IPI) from [<80210594>] (ipi_handler+0x20/0x28 arch/arm/kernel/smp.c:706) r9:828e9780 r8:df805f78 r7:00000017 r6:8190d744 r5:8280cc40 r4:82887d00 [<80210574>] (ipi_handler) from [<802ba7d4>] (handle_percpu_devid_irq+0x9c/0x2d4 kernel/irq/chip.c:928) [<802ba738>] (handle_percpu_devid_irq) from [<802b40e0>] (generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]) [<802ba738>] (handle_percpu_devid_irq) from [<802b40e0>] (handle_irq_desc kernel/irq/irqdesc.c:648 [inline]) [<802ba738>] (handle_percpu_devid_irq) from [<802b40e0>] (generic_handle_domain_irq+0x30/0x40 kernel/irq/irqdesc.c:704) r10:00000000 r9:828e9780 r8:00000000 r7:df80a00c r6:822a81b0 r5:df80a000 r4:8240ccec r3:00010001 [<802b40b0>] (generic_handle_domain_irq) from [<80831628>] (gic_handle_irq+0x68/0x7c drivers/irqchip/irq-gic.c:372) [<808315c0>] (gic_handle_irq) from [<8170e90c>] (generic_handle_arch_irq+0x60/0x80 kernel/irq/handle.c:238) r7:df84ddb8 r6:81f2f4ec r5:81f2f504 r4:822a81a4 [<8170e8ac>] (generic_handle_arch_irq) from [<80812a04>] (call_with_stack+0x1c/0x20 arch/arm/lib/call_with_stack.S:40) r9:828e9780 r8:00000000 r7:df84ddec r6:ffffffff r5:20000113 r4:80276a94 [<808129e8>] (call_with_stack) from [<80200b44>] (__irq_svc+0x84/0xac arch/arm/kernel/entry-armv.S:221) Exception stack(0xdf84ddb8 to 0xdf84de00) dda0: 00000001 81d7fdd0 ddc0: 00000001 828e9780 00000000 ddde5b00 00000000 84689000 00000000 828e9780 dde0: 00000000 df84de4c df84ddf8 df84de08 81719000 80276a94 20000113 ffffffff [<80276a08>] (finish_task_switch) from [<81710c24>] (context_switch kernel/sched/core.c:5149 [inline]) [<80276a08>] (finish_task_switch) from [<81710c24>] (__schedule+0x31c/0xa34 kernel/sched/core.c:6458) r10:846891d0 r9:84689000 r8:00000001 r7:84689000 r6:828e9780 r5:ddde5b00 r4:853b0000 [<81710908>] (__schedule) from [<81711390>] (schedule+0x54/0xbc kernel/sched/core.c:6530) r10:00000001 r9:824f294c r8:828e9780 r7:824f2958 r6:828e9780 r5:82404d40 r4:828e9780 [<8171133c>] (schedule) from [<81717ce0>] (schedule_timeout+0x88/0x104 kernel/time/timer.c:1935) r5:82404d40 r4:0001dbc3 [<81717c58>] (schedule_timeout) from [<802c9ebc>] (rcu_gp_fqs_loop+0x128/0x380 kernel/rcu/tree.c:1999) r6:82404d40 r5:824f2780 r4:00000000 [<802c9d94>] (rcu_gp_fqs_loop) from [<802cbdb0>] (rcu_gp_kthread+0xcc/0x148 kernel/rcu/tree.c:2187) r10:df84df64 r9:82404d40 r8:824f2780 r7:824f295a r6:824f294c r5:828e9780 r4:824f2958 [<802cbce4>] (rcu_gp_kthread) from [<8026a954>] (kthread+0xf0/0x120 kernel/kthread.c:376) r7:00000000 [<8026a864>] (kthread) from [<80200100>] (ret_from_fork+0x14/0x34 arch/arm/kernel/entry-common.S:148) Exception stack(0xdf84dfb0 to 0xdf84dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026a864 r4:828a34c0