INFO: task kworker/1:55:4418 blocked for more than 430 seconds. Not tainted 6.11.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:55 state:D stack:0 pid:4418 tgid:4418 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<8197ec88>] (__schedule) from [<8197f820>] (__schedule_loop kernel/sched/core.c:6606 [inline]) [<8197ec88>] (__schedule) from [<8197f820>] (schedule+0x2c/0xfc kernel/sched/core.c:6621) r10:8260ca7c r9:00000000 r8:82714ab8 r7:00000002 r6:df9a5da4 r5:84236000 r4:84236000 [<8197f7f4>] (schedule) from [<8197fbd4>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6678) r5:84236000 r4:82714ab4 [<8197fbbc>] (schedule_preempt_disabled) from [<819826ac>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<8197fbbc>] (schedule_preempt_disabled) from [<819826ac>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<819823c4>] (__mutex_lock.constprop.0) from [<81982f78>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8260ca7c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:df9a5e20 r4:00000000 [<81982f64>] (__mutex_lock_slowpath) from [<81982fb8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<81982f7c>] (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 r5:84831d40 r4:00000000 [<804aa078>] (vfree) from [<80501a18>] (execmem_free+0x30/0x64 mm/execmem.c:69) r9:84236000 r8:01800000 r7:00000000 r6:82c16200 r5:00001000 r4:7f264000 [<805019e8>] (execmem_free) from [<80393a3c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1072) r5:00001000 r4:dfec7000 [<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) r5:84dfb354 r4:84dfb000 [<80394e0c>] (bpf_prog_free_deferred) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r7:ddde4000 r6:82c16200 r5:84dfb354 r4:84da4f80 [<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) r10:84236000 r9:84da4fac r8:61c88647 r7:ddde4020 r6:82604d40 r5:ddde4000 r4:84da4f80 [<80266900>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:e03fde78 r8:848292c0 r7:84da4f80 r6:80266900 r5:84236000 r4:84829240 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf9a5fb0 to 0xdf9a5ff8) 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 r4:84829240 INFO: task kworker/1:56:4421 blocked for more than 430 seconds. Not tainted 6.11.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:56 state:D stack:0 pid:4421 tgid:4421 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<8197ec88>] (__schedule) from [<8197f820>] (__schedule_loop kernel/sched/core.c:6606 [inline]) [<8197ec88>] (__schedule) from [<8197f820>] (schedule+0x2c/0xfc kernel/sched/core.c:6621) r10:8260ca7c r9:00000000 r8:82714ab8 r7:00000002 r6:e04e1da4 r5:84ec0000 r4:84ec0000 [<8197f7f4>] (schedule) from [<8197fbd4>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6678) r5:84ec0000 r4:82714ab4 [<8197fbbc>] (schedule_preempt_disabled) from [<819826ac>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<8197fbbc>] (schedule_preempt_disabled) from [<819826ac>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<819823c4>] (__mutex_lock.constprop.0) from [<81982f78>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8260ca7c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e04e1e20 r4:00000000 [<81982f64>] (__mutex_lock_slowpath) from [<81982fb8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<81982f7c>] (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 r5:84829e80 r4:00000000 [<804aa078>] (vfree) from [<80501a18>] (execmem_free+0x30/0x64 mm/execmem.c:69) r9:84ec0000 r8:01800000 r7:00000000 r6:82c16200 r5:00001000 r4:7f266000 [<805019e8>] (execmem_free) from [<80393a3c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1072) r5:00001000 r4:dff29000 [<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) r5:84df9354 r4:84df9000 [<80394e0c>] (bpf_prog_free_deferred) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r7:ddde4000 r6:82c16200 r5:84df9354 r4:84e2f000 [<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) r10:84ec0000 r9:84e2f02c r8:61c88647 r7:ddde4020 r6:82604d40 r5:ddde4000 r4:84e2f000 [<80266900>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df9a5e78 r8:84829480 r7:84e2f000 r6:80266900 r5:84ec0000 r4:84829400 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe04e1fb0 to 0xe04e1ff8) 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 r4:84829400 INFO: task kworker/0:27:4431 blocked for more than 430 seconds. Not tainted 6.11.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:27 state:D stack:0 pid:4431 tgid:4431 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<8197ec88>] (__schedule) from [<8197f820>] (__schedule_loop kernel/sched/core.c:6606 [inline]) [<8197ec88>] (__schedule) from [<8197f820>] (schedule+0x2c/0xfc kernel/sched/core.c:6621) r10:8260ca7c r9:00000000 r8:82714ab8 r7:00000002 r6:e04a5da4 r5:84ec4800 r4:84ec4800 [<8197f7f4>] (schedule) from [<8197fbd4>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6678) r5:84ec4800 r4:82714ab4 [<8197fbbc>] (schedule_preempt_disabled) from [<819826ac>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<8197fbbc>] (schedule_preempt_disabled) from [<819826ac>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<819823c4>] (__mutex_lock.constprop.0) from [<81982f78>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8260ca7c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:e04a5e20 r4:00000000 [<81982f64>] (__mutex_lock_slowpath) from [<81982fb8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<81982f7c>] (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 r5:84829fc0 r4:00000000 [<804aa078>] (vfree) from [<80501a18>] (execmem_free+0x30/0x64 mm/execmem.c:69) r9:84ec4800 r8:00800000 r7:00000000 r6:82c16000 r5:00001000 r4:7f268000 [<805019e8>] (execmem_free) from [<80393a3c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1072) r5:00001000 r4:dff37000 [<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) r5:84dfaf54 r4:84dfac00 [<80394e0c>] (bpf_prog_free_deferred) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r7:dddd0000 r6:82c16000 r5:84dfaf54 r4:84832200 [<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) r10:84ec4800 r9:8483222c r8:61c88647 r7:dddd0020 r6:82604d40 r5:dddd0000 r4:84832200 [<80266900>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:e04a1e78 r8:84856500 r7:84832200 r6:80266900 r5:84ec4800 r4:84dabcc0 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xe04a5fb0 to 0xe04a5ff8) 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 r4:84dabcc0 INFO: task kworker/0:28:4440 blocked for more than 430 seconds. Not tainted 6.11.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:28 state:D stack:0 pid:4440 tgid:4440 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<8197ec88>] (__schedule) from [<8197f820>] (__schedule_loop kernel/sched/core.c:6606 [inline]) [<8197ec88>] (__schedule) from [<8197f820>] (schedule+0x2c/0xfc kernel/sched/core.c:6621) r10:8260ca7c r9:00000000 r8:82714ab8 r7:00000002 r6:dfcb9da4 r5:84f03c00 r4:84f03c00 [<8197f7f4>] (schedule) from [<8197fbd4>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6678) r5:84f03c00 r4:82714ab4 [<8197fbbc>] (schedule_preempt_disabled) from [<819826ac>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<8197fbbc>] (schedule_preempt_disabled) from [<819826ac>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<819823c4>] (__mutex_lock.constprop.0) from [<81982f78>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8260ca7c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dfcb9e20 r4:00000000 [<81982f64>] (__mutex_lock_slowpath) from [<81982fb8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<81982f7c>] (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 r5:84874f00 r4:00000000 [<804aa078>] (vfree) from [<80501a18>] (execmem_free+0x30/0x64 mm/execmem.c:69) r9:84f03c00 r8:00800000 r7:00000000 r6:82c16000 r5:00001000 r4:7f26a000 [<805019e8>] (execmem_free) from [<80393a3c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1072) r5:00001000 r4:dff6f000 [<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) r5:8484cf54 r4:8484cc00 [<80394e0c>] (bpf_prog_free_deferred) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r7:dddd0000 r6:82c16000 r5:8484cf54 r4:84832280 [<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) r10:84f03c00 r9:848322ac r8:61c88647 r7:dddd0020 r6:82604d40 r5:dddd0000 r4:84832280 [<80266900>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:e04a1e78 r8:84dab100 r7:84832280 r6:80266900 r5:84f03c00 r4:84dabe00 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdfcb9fb0 to 0xdfcb9ff8) 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 r4:84dabe00 INFO: task kworker/1:58:4444 blocked for more than 430 seconds. Not tainted 6.11.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:58 state:D stack:0 pid:4444 tgid:4444 ppid:2 flags:0x00000000 Workqueue: events bpf_prog_free_deferred Call trace: [<8197ec88>] (__schedule) from [<8197f820>] (__schedule_loop kernel/sched/core.c:6606 [inline]) [<8197ec88>] (__schedule) from [<8197f820>] (schedule+0x2c/0xfc kernel/sched/core.c:6621) r10:8260ca7c r9:00000000 r8:82714ab8 r7:00000002 r6:dff91da4 r5:84f06000 r4:84f06000 [<8197f7f4>] (schedule) from [<8197fbd4>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6678) r5:84f06000 r4:82714ab4 [<8197fbbc>] (schedule_preempt_disabled) from [<819826ac>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<8197fbbc>] (schedule_preempt_disabled) from [<819826ac>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<819823c4>] (__mutex_lock.constprop.0) from [<81982f78>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8260ca7c r9:00000001 r8:00000000 r7:ffffffff r6:00000000 r5:dff91e20 r4:00000000 [<81982f64>] (__mutex_lock_slowpath) from [<81982fb8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<81982f7c>] (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 r5:846a16c0 r4:00000000 [<804aa078>] (vfree) from [<80501a18>] (execmem_free+0x30/0x64 mm/execmem.c:69) r9:84f06000 r8:01800000 r7:00000000 r6:82c16200 r5:00001000 r4:7f26c000 [<805019e8>] (execmem_free) from [<80393a3c>] (bpf_jit_free_exec+0x10/0x14 kernel/bpf/core.c:1072) r5:00001000 r4:dff93000 [<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) r5:8484c354 r4:8484c000 [<80394e0c>] (bpf_prog_free_deferred) from [<80265f08>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3231) r7:ddde4000 r6:82c16200 r5:8484c354 r4:84e2f180 [<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) r10:84f06000 r9:84e2f1ac r8:61c88647 r7:ddde4020 r6:82604d40 r5:ddde4000 r4:84e2f180 [<80266900>] (worker_thread) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:dff31e78 r8:844cf0c0 r7:84e2f180 r6:80266900 r5:84f06000 r4:84829640 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdff91fb0 to 0xdff91ff8) 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 r4:84829640 NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 32 Comm: khungtaskd Not tainted 6.11.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Call trace: [<8195d0a0>] (dump_backtrace) from [<8195d19c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:00000113 r5:60000193 r4:8200ca8c [<8195d184>] (show_stack) from [<8197aedc>] (__dump_stack lib/dump_stack.c:93 [inline]) [<8195d184>] (show_stack) from [<8197aedc>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:119) [<8197ae6c>] (dump_stack_lvl) from [<8197af00>] (dump_stack+0x18/0x1c lib/dump_stack.c:128) r5:00000000 r4:00000001 [<8197aee8>] (dump_stack) from [<8194a390>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<8194a230>] (nmi_cpu_backtrace) from [<8194a4dc>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000000 r6:8260c5d0 r5:8261a88c r4:ffffffff [<8194a3ac>] (nmi_trigger_cpumask_backtrace) from [<802103c8>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:851) r9:00008c1d r8:828b3130 r7:8260c734 r6:00007d51 r5:8261ae48 r4:8548c51c [<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 r8:82ccfc00 r7:00000000 r6:80350998 r5:82e49800 r4:82fa45c0 [<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 r4:82fa45c0 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 35 Comm: kcompactd0 Not tainted 6.11.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express PC is at __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] PC is at _raw_spin_unlock_irqrestore+0x28/0x54 kernel/locking/spinlock.c:194 LR is at spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] LR is at prepare_to_wait_event+0x5c/0x17c kernel/sched/wait.c:300 pc : [<81988038>] lr : [<802a5024>] psr: 20000113 sp : df8edee0 ip : df8edef0 fp : df8edeec r10: 827f1a40 r9 : df8edf4c r8 : 82ef9800 r7 : 60000113 r6 : 827f2564 r5 : 00000000 r4 : df8edf40 r3 : 00000f14 r2 : 00000f13 r1 : 60000113 r0 : 827f2564 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 85b0a3c0 DAC: 00000000 Call trace: [<81988010>] (_raw_spin_unlock_irqrestore) from [<802a5024>] (spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]) [<81988010>] (_raw_spin_unlock_irqrestore) from [<802a5024>] (prepare_to_wait_event+0x5c/0x17c kernel/sched/wait.c:300) [<802a4fc8>] (prepare_to_wait_event) from [<80476b90>] (kcompactd+0x2b4/0x3b0 mm/compaction.c:3206) r10:827f1a40 r9:82ef9800 r8:8260ca9c r7:827f2564 r6:00000000 r5:827f1a40 r4:00000000 [<804768dc>] (kcompactd) from [<8026fb04>] (kthread+0x104/0x134 kernel/kthread.c:389) r10:00000000 r9:df819e28 r8:82fa4bc0 r7:827f1a40 r6:804768dc r5:82ef9800 r4:82fa4ac0 [<8026fa00>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137) Exception stack(0xdf8edfb0 to 0xdf8edff8) 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 r4:82fa4ac0