INFO: task syz-executor.0:15547 blocked for more than 430 seconds. Not tainted 6.2.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:15547 ppid:3939 flags:0x00000001 Backtrace: [<817b1fa0>] (__schedule) from [<817b2ac8>] (schedule+0x5c/0xac kernel/sched/core.c:6682) r10:5ac3c35a r9:83e76034 r8:df97de0c r7:824f2200 r6:824f2314 r5:00000002 r4:84e15080 [<817b2a6c>] (schedule) from [<802d0ee4>] (synchronize_rcu_expedited+0x250/0x3d8 kernel/rcu/tree_exp.h:961) r5:00000002 r4:00003c94 [<802d0c94>] (synchronize_rcu_expedited) from [<802d10d4>] (synchronize_rcu+0x68/0x94 kernel/rcu/tree.c:3543) r8:83e76038 r7:83e76000 r6:8d7c6800 r5:8d7c68b0 r4:8d7c6830 [<802d106c>] (synchronize_rcu) from [<80eb0294>] (evdev_detach_client drivers/input/evdev.c:386 [inline]) [<802d106c>] (synchronize_rcu) from [<80eb0294>] (evdev_release+0xa4/0x110 drivers/input/evdev.c:449) [<80eb01f0>] (evdev_release) from [<804b2d84>] (__fput+0x84/0x264 fs/file_table.c:320) r9:7efffd08 r8:83f53a90 r7:83c67850 r6:8350f880 r5:002a0001 r4:8d48bd80 [<804b2d00>] (__fput) from [<804b2fe0>] (____fput+0x10/0x14 fs/file_table.c:348) r9:7efffd08 r8:84e158b4 r7:826475e4 r6:84e15080 r5:84e15884 r4:00000000 [<804b2fd0>] (____fput) from [<80266680>] (task_work_run+0x8c/0xb4 kernel/task_work.c:179) [<802665f4>] (task_work_run) from [<8020c078>] (resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]) [<802665f4>] (task_work_run) from [<8020c078>] (do_work_pending+0x424/0x528 arch/arm/kernel/signal.c:630) r9:7efffd08 r8:80200288 r7:fffffe30 r6:80200288 r5:df97dfb0 r4:84e15080 [<8020bc54>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x20) Exception stack(0xdf97dfb0 to 0xdf97dff8) dfa0: 00000000 00000002 00000000 00000004 dfc0: 00000005 00cdb4c0 76b83000 00000006 000001f4 76b83d58 0014c280 00000000 dfe0: 31e60000 7eb86408 0002a3e0 0002a89c 80000010 00000004 r10:00000006 r9:84e15080 r8:80200288 r7:00000006 r6:76b83000 r5:00cdb4c0 r4:00000005 NMI backtrace for cpu 1 CPU: 1 PID: 26 Comm: khungtaskd Not tainted 6.2.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<817932b8>] (dump_backtrace) from [<817933ac>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:8240c5e0 r5:60000193 r4:81d878c0 [<81793394>] (show_stack) from [<817af840>] (__dump_stack lib/dump_stack.c:88 [inline]) [<81793394>] (show_stack) from [<817af840>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<817af7f8>] (dump_stack_lvl) from [<817af864>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000001 r4:00000001 [<817af84c>] (dump_stack) from [<81780ca0>] (nmi_cpu_backtrace+0x170/0x18c lib/nmi_backtrace.c:111) [<81780b30>] (nmi_cpu_backtrace) from [<81780e3c>] (nmi_trigger_cpumask_backtrace+0x180/0x228 lib/nmi_backtrace.c:62) r9:00000002 r8:8020fdd4 r7:00000001 r6:8240c5e0 r5:8240c49c r4:00000000 [<81780cbc>] (nmi_trigger_cpumask_backtrace) from [<80211058>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:854) r10:00000064 r9:00076c00 r8:82404d40 r7:00007f5a r6:8268d9a8 r5:8240c5fc r4:84c67c64 r3:00000001 [<80211040>] (arch_trigger_cpumask_backtrace) from [<80332c38>] (trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]) [<80211040>] (arch_trigger_cpumask_backtrace) from [<80332c38>] (check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]) [<80211040>] (arch_trigger_cpumask_backtrace) from [<80332c38>] (watchdog+0x4a8/0x590 kernel/hung_task.c:377) [<80332790>] (watchdog) from [<8026a00c>] (kthread+0xec/0x11c kernel/kthread.c:376) r10:00000000 r9:df819e4c r8:82aa06c0 r7:00000000 r6:80332790 r5:828fae00 r4:82a32280 [<80269f20>] (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 r5:80269f20 r4:82a32280 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2939 Comm: syz-fuzzer Not tainted 6.2.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express PC is at 0x304d8 LR is at 0x123b0 pc : [<000304d8>] lr : [<000123b0>] psr: 20000010 sp : 7ec57c24 ip : 00000157 fp : 00000000 r10: 00ff5228 r9 : 00000182 r8 : 00000000 r7 : 6744044f r6 : 00000000 r5 : 67430a31 r4 : 00000024 r3 : 09305e00 r2 : 00000030 r1 : 000000f1 r0 : 00000010 Flags: nzCv IRQs on FIQs on Mode USER_32 ISA ARM Segment user Control: 30c5387d Table: 8438d840 DAC: fffffffd Backtrace: no frame pointer