INFO: task kworker/1:4:3065 blocked for more than 430 seconds. Not tainted 6.11.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:0 pid:3065 tgid:3065 ppid:2 flags:0x00400000 Workqueue: events bpf_prog_free_deferred Call trace: [<8197ecc8>] (__schedule) from [<8197f860>] (__schedule_loop kernel/sched/core.c:6606 [inline]) [<8197ecc8>] (__schedule) from [<8197f860>] (schedule+0x2c/0xfc kernel/sched/core.c:6621) r10:8260ca7c r9:00000000 r8:82714ab8 r7:00000002 r6:ec429da4 r5:83ef0000 r4:83ef0000 [<8197f834>] (schedule) from [<8197fc14>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6678) r5:83ef0000 r4:82714ab4 [<8197fbfc>] (schedule_preempt_disabled) from [<819826ec>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<8197fbfc>] (schedule_preempt_disabled) from [<819826ec>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<81982404>] (__mutex_lock.constprop.0) from [<81982fb8>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8260ca7c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:ec429e20 r4:00000000 [<81982fa4>] (__mutex_lock_slowpath) from [<81982ff8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<81982fbc>] (mutex_lock) from [<804a6490>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2846) [<804a6428>] (_vm_unmap_aliases) from [<804aa1e8>] (vm_reset_perms mm/vmalloc.c:3275 [inline]) [<804a6428>] (_vm_unmap_aliases) from [<804aa1e8>] (vfree+0x170/0x1e4 mm/vmalloc.c:3354) r10:82c16205 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853bb100 r4:00000000 [<804aa078>] (vfree) from [<80501a18>] (execmem_free+0x30/0x64 mm/execmem.c:69) r9:83ef0000 r8:01800000 r7:00000000 r6:82c16200 r5:00001000 r4:7f035000 [<805019e8>] (execmem_free) from [<80393a3c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1072) r5:00001000 r4:dfd0b000 [<80393a2c>] (bpf_jit_free_exec) from [<80393e1c>] (bpf_jit_binary_free kernel/bpf/core.c:1118 [inline]) [<80393a2c>] (bpf_jit_free_exec) from [<80393e1c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1241) [<80393db4>] (bpf_jit_free) from [<80394f58>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2800) r5:852c6354 r4:852c6000 [<80394e0c>] (bpf_prog_free_deferred) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r7:ddde4000 r6:82c16200 r5:852c6354 r4:84002780 [<80265d54>] (process_one_work) from [<80266aec>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80265d54>] (process_one_work) from [<80266aec>] (worker_thread+0x1ec/0x3b4 kernel/workqueue.c:3389) r10:83ef0000 r9:840027ac r8:61c88647 r7:ddde4020 r6:82604d40 r5:ddde4000 r4:84002780 [<80266900>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:ec425e78 r8:83fffd40 r7:84002780 r6:80266900 r5:83ef0000 r4:83fffb00 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xec429fb0 to 0xec429ff8) 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 r5:8026fa00 r4:83fffb00 INFO: task kworker/1:8:4137 blocked for more than 430 seconds. Not tainted 6.11.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:8 state:D stack:0 pid:4137 tgid:4137 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<8197ecc8>] (__schedule) from [<8197f860>] (__schedule_loop kernel/sched/core.c:6606 [inline]) [<8197ecc8>] (__schedule) from [<8197f860>] (schedule+0x2c/0xfc kernel/sched/core.c:6621) r10:8260ca7c r9:00000000 r8:82714ab8 r7:00000002 r6:dffbdda4 r5:845a4800 r4:845a4800 [<8197f834>] (schedule) from [<8197fc14>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6678) r5:845a4800 r4:82714ab4 [<8197fbfc>] (schedule_preempt_disabled) from [<819826ec>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<8197fbfc>] (schedule_preempt_disabled) from [<819826ec>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<81982404>] (__mutex_lock.constprop.0) from [<81982fb8>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8260ca7c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dffbde20 r4:00000000 [<81982fa4>] (__mutex_lock_slowpath) from [<81982ff8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<81982fbc>] (mutex_lock) from [<804a6490>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2846) [<804a6428>] (_vm_unmap_aliases) from [<804aa1e8>] (vm_reset_perms mm/vmalloc.c:3275 [inline]) [<804a6428>] (_vm_unmap_aliases) from [<804aa1e8>] (vfree+0x170/0x1e4 mm/vmalloc.c:3354) r10:82c16205 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853c6500 r4:00000000 [<804aa078>] (vfree) from [<80501a18>] (execmem_free+0x30/0x64 mm/execmem.c:69) r9:845a4800 r8:01800000 r7:00000000 r6:82c16200 r5:00001000 r4:7f031000 [<805019e8>] (execmem_free) from [<80393a3c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1072) r5:00001000 r4:dfc9f000 [<80393a2c>] (bpf_jit_free_exec) from [<80393e1c>] (bpf_jit_binary_free kernel/bpf/core.c:1118 [inline]) [<80393a2c>] (bpf_jit_free_exec) from [<80393e1c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1241) [<80393db4>] (bpf_jit_free) from [<80394f58>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2800) r5:84d6b754 r4:84d6b400 [<80394e0c>] (bpf_prog_free_deferred) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r7:ddde4000 r6:82c16200 r5:84d6b754 r4:8522c180 [<80265d54>] (process_one_work) from [<80266aec>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80265d54>] (process_one_work) from [<80266aec>] (worker_thread+0x1ec/0x3b4 kernel/workqueue.c:3389) r10:845a4800 r9:8522c1ac r8:61c88647 r7:ddde4020 r6:82604d40 r5:ddde4000 r4:8522c180 [<80266900>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:dfd45e78 r8:852434c0 r7:8522c180 r6:80266900 r5:845a4800 r4:85243900 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdffbdfb0 to 0xdffbdff8) 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 r5:8026fa00 r4:85243900 INFO: task kworker/0:7:4162 blocked for more than 430 seconds. Not tainted 6.11.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:7 state:D stack:0 pid:4162 tgid:4162 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<8197ecc8>] (__schedule) from [<8197f860>] (__schedule_loop kernel/sched/core.c:6606 [inline]) [<8197ecc8>] (__schedule) from [<8197f860>] (schedule+0x2c/0xfc kernel/sched/core.c:6621) r10:8260ca7c r9:00000000 r8:82714ab8 r7:00000002 r6:e03fdda4 r5:845c9800 r4:845c9800 [<8197f834>] (schedule) from [<8197fc14>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6678) r5:845c9800 r4:82714ab4 [<8197fbfc>] (schedule_preempt_disabled) from [<819826ec>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<8197fbfc>] (schedule_preempt_disabled) from [<819826ec>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<81982404>] (__mutex_lock.constprop.0) from [<81982fb8>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8260ca7c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e03fde20 r4:00000000 [<81982fa4>] (__mutex_lock_slowpath) from [<81982ff8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<81982fbc>] (mutex_lock) from [<804a6490>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2846) [<804a6428>] (_vm_unmap_aliases) from [<804aa1e8>] (vm_reset_perms mm/vmalloc.c:3275 [inline]) [<804a6428>] (_vm_unmap_aliases) from [<804aa1e8>] (vfree+0x170/0x1e4 mm/vmalloc.c:3354) r10:82c16005 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853cfc80 r4:00000000 [<804aa078>] (vfree) from [<80501a18>] (execmem_free+0x30/0x64 mm/execmem.c:69) r9:845c9800 r8:00800000 r7:00000000 r6:82c16000 r5:00001000 r4:7f02d000 [<805019e8>] (execmem_free) from [<80393a3c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1072) r5:00001000 r4:dfc45000 [<80393a2c>] (bpf_jit_free_exec) from [<80393e1c>] (bpf_jit_binary_free kernel/bpf/core.c:1118 [inline]) [<80393a2c>] (bpf_jit_free_exec) from [<80393e1c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1241) [<80393db4>] (bpf_jit_free) from [<80394f58>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2800) r5:855d0754 r4:855d0400 [<80394e0c>] (bpf_prog_free_deferred) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r7:dddd0000 r6:82c16000 r5:855d0754 r4:85077300 [<80265d54>] (process_one_work) from [<80266aec>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80265d54>] (process_one_work) from [<80266aec>] (worker_thread+0x1ec/0x3b4 kernel/workqueue.c:3389) r10:845c9800 r9:8507732c r8:61c88647 r7:dddd0020 r6:82604d40 r5:dddd0000 r4:85077300 [<80266900>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:e0375e78 r8:8520ef80 r7:85077300 r6:80266900 r5:845c9800 r4:8525bfc0 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe03fdfb0 to 0xe03fdff8) 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 r5:8026fa00 r4:8525bfc0 INFO: task kworker/1:14:4192 blocked for more than 430 seconds. Not tainted 6.11.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:14 state:D stack:0 pid:4192 tgid:4192 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<8197ecc8>] (__schedule) from [<8197f860>] (__schedule_loop kernel/sched/core.c:6606 [inline]) [<8197ecc8>] (__schedule) from [<8197f860>] (schedule+0x2c/0xfc kernel/sched/core.c:6621) r10:8260ca7c r9:00000000 r8:82714ab8 r7:00000002 r6:dfa25da4 r5:841d6c00 r4:841d6c00 [<8197f834>] (schedule) from [<8197fc14>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6678) r5:841d6c00 r4:82714ab4 [<8197fbfc>] (schedule_preempt_disabled) from [<819826ec>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<8197fbfc>] (schedule_preempt_disabled) from [<819826ec>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<81982404>] (__mutex_lock.constprop.0) from [<81982fb8>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8260ca7c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfa25e20 r4:00000000 [<81982fa4>] (__mutex_lock_slowpath) from [<81982ff8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<81982fbc>] (mutex_lock) from [<804a6490>] (_vm_unmap_aliases+0x68/0x240 mm/vmalloc.c:2846) [<804a6428>] (_vm_unmap_aliases) from [<804aa1e8>] (vm_reset_perms mm/vmalloc.c:3275 [inline]) [<804a6428>] (_vm_unmap_aliases) from [<804aa1e8>] (vfree+0x170/0x1e4 mm/vmalloc.c:3354) r10:82c16205 r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:853cef00 r4:00000000 [<804aa078>] (vfree) from [<80501a18>] (execmem_free+0x30/0x64 mm/execmem.c:69) r9:841d6c00 r8:01800000 r7:00000000 r6:82c16200 r5:00001000 r4:7f033000 [<805019e8>] (execmem_free) from [<80393a3c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1072) r5:00001000 r4:dfcff000 [<80393a2c>] (bpf_jit_free_exec) from [<80393e1c>] (bpf_jit_binary_free kernel/bpf/core.c:1118 [inline]) [<80393a2c>] (bpf_jit_free_exec) from [<80393e1c>] (bpf_jit_free+0x68/0xe4 kernel/bpf/core.c:1241) [<80393db4>] (bpf_jit_free) from [<80394f58>] (bpf_prog_free_deferred+0x14c/0x164 kernel/bpf/core.c:2800) r5:8519db54 r4:8519d800 [<80394e0c>] (bpf_prog_free_deferred) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r7:ddde4000 r6:82c16200 r5:8519db54 r4:851ba780 [<80265d54>] (process_one_work) from [<80266aec>] (process_scheduled_works kernel/workqueue.c:3312 [inline]) [<80265d54>] (process_one_work) from [<80266aec>] (worker_thread+0x1ec/0x3b4 kernel/workqueue.c:3389) r10:841d6c00 r9:851ba7ac r8:61c88647 r7:ddde4020 r6:82604d40 r5:ddde4000 r4:851ba780 [<80266900>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:dfa69e78 r8:85258980 r7:851ba780 r6:80266900 r5:841d6c00 r4:85258180 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfa25fb0 to 0xdfa25ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fa00 r4:85258180 NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 32 Comm: khungtaskd Not tainted 6.11.0-rc6-syzkaller #0 Hardware name: ARM-Versatile Express Call trace: [<8195d0e0>] (dump_backtrace) from [<8195d1dc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:00000113 r5:60000193 r4:8200ca8c [<8195d1c4>] (show_stack) from [<8197af1c>] (__dump_stack lib/dump_stack.c:93 [inline]) [<8195d1c4>] (show_stack) from [<8197af1c>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:119) [<8197aeac>] (dump_stack_lvl) from [<8197af40>] (dump_stack+0x18/0x1c lib/dump_stack.c:128) r5:00000000 r4:00000001 [<8197af28>] (dump_stack) from [<8194a3d0>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<8194a270>] (nmi_cpu_backtrace) from [<8194a51c>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:8260c5d0 r5:8261a88c r4:ffffffff [<8194a3ec>] (nmi_trigger_cpumask_backtrace) from [<802103c8>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:851) r9:00013d25 r8:828b3130 r7:8260c734 r6:00007e5c r5:8261ae48 r4:83ddb91c [<802103b0>] (arch_trigger_cpumask_backtrace) from [<80350e30>] (trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]) [<802103b0>] (arch_trigger_cpumask_backtrace) from [<80350e30>] (check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]) [<802103b0>] (arch_trigger_cpumask_backtrace) from [<80350e30>] (watchdog+0x498/0x5b8 kernel/hung_task.c:379) [<80350998>] (watchdog) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df819e58 r8:82ccfb40 r7:00000000 r6:80350998 r5:82e49800 r4:82fa5640 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8e1fb0 to 0xdf8e1ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fa00 r4:82fa5640 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 7040 Comm: syz.0.728 Not tainted 6.11.0-rc6-syzkaller #0 Hardware name: ARM-Versatile Express PC is at walk_stackframe+0x38/0x44 arch/arm/kernel/stacktrace.c:138 LR is at walk_stackframe+0x38/0x44 arch/arm/kernel/stacktrace.c:137 pc : [<8020c020>] lr : [<8020c020>] psr: 20000113 sp : dfb35e48 ip : dfb35e48 fp : dfb35e64 r10: 00000010 r9 : 85263f00 r8 : 846b2840 r7 : 846b2a0c r6 : 8020cfdc r5 : dfb35e6c r4 : dfb35e74 r3 : 8027cfe5 r2 : 80201190 r1 : dfb35ea4 r0 : 00000000 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84701d40 DAC: 00000000 Call trace: [<8020bfe8>] (walk_stackframe) from [<8020d070>] (return_address+0x64/0x174 arch/arm/kernel/return_address.c:52) r7:846b2a0c r6:819881bc r5:00000001 r4:00000000 [<8020d00c>] (return_address) from [<8027cfe4>] (get_lock_parent_ip include/linux/ftrace.h:978 [inline]) [<8020d00c>] (return_address) from [<8027cfe4>] (preempt_latency_start kernel/sched/core.c:5634 [inline]) [<8020d00c>] (return_address) from [<8027cfe4>] (preempt_count_add+0x124/0x150 kernel/sched/core.c:5659) r4:84d50000 [<8027cec0>] (preempt_count_add) from [<819881bc>] (__raw_spin_lock include/linux/spinlock_api_smp.h:132 [inline]) [<8027cec0>] (preempt_count_add) from [<819881bc>] (_raw_spin_lock+0x18/0x58 kernel/locking/spinlock.c:154) r6:00000000 r5:846b2800 r4:846b2a00 [<819881a4>] (_raw_spin_lock) from [<807ec0b0>] (spin_lock include/linux/spinlock.h:351 [inline]) [<819881a4>] (_raw_spin_lock) from [<807ec0b0>] (io_cq_lock io_uring/io_uring.c:574 [inline]) [<819881a4>] (_raw_spin_lock) from [<807ec0b0>] (__io_cqring_overflow_flush+0x50/0x14c io_uring/io_uring.c:612) r5:846b2800 r4:846b2800 [<807ec060>] (__io_cqring_overflow_flush) from [<807efae8>] (io_cqring_do_overflow_flush io_uring/io_uring.c:645 [inline]) [<807ec060>] (__io_cqring_overflow_flush) from [<807efae8>] (io_cqring_wait io_uring/io_uring.c:2486 [inline]) [<807ec060>] (__io_cqring_overflow_flush) from [<807efae8>] (__do_sys_io_uring_enter io_uring/io_uring.c:3255 [inline]) [<807ec060>] (__io_cqring_overflow_flush) from [<807efae8>] (sys_io_uring_enter+0xa50/0xbec io_uring/io_uring.c:3147) r10:00000000 r9:85263f00 r8:846b2840 r7:00000001 r6:00000001 r5:84d50000 r4:846b2800 r3:84d50000 [<807ef098>] (sys_io_uring_enter) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xdfb35fa8 to 0xdfb35ff0) 5fa0: 00000000 00000000 00000004 00000000 00000003 00000007 5fc0: 00000000 00000000 002762fc 000001aa 00000000 00006364 003d0f00 76b470bc 5fe0: 76b46ec0 76b46eb0 000189f0 00132dd0 r10:000001aa r9:84d50000 r8:8020029c r7:000001aa r6:002762fc r5:00000000 r4:00000000